1970 GTO Version 3.0 [Archive] - Page 4

andrewb70

05-13-2023, 06:41 PM

I have been watching the weather forecast, looking for a partly sunny day, with low wind and no rain. Well, today was that perfect day. I got started in the morning and started my Cerakote shop.

https://j.hmjimg.com/2023/05/13/GTOV3-914.md.jpg (https://hostmyjunk.com/image/M7dGp)

I had 4 parts to coat: compressor housing, charge pipe, intake lid and intake base (not pictured).

https://j.hmjimg.com/2023/05/13/GTOV3-915.md.jpg (https://hostmyjunk.com/image/M7sKR)

This guy was super helpful for cleaning. I filled it up with acetone, pressurized the can, and it sprayed a beautiful, fine mist that cleaned the parts well. Everything was already bead blasted before hand. I just sprayed everything down, used a red 3M pad to clean, and sprayed again. Then I used a MAP gas torch to heat the parts and evaporate all of the acetone.

https://j.hmjimg.com/2023/05/13/GTOV3-916.md.jpg (https://hostmyjunk.com/image/M7YSo)

I am using the Cerakite C coating, in the same burnt bronze color that I used on the valley cover and the front cover. You put down a light coat and immediately go over it with a heavier coat. It looks amazing in the sun, because the burnt bronze has a ton of gold and copper flakes in it.

https://j.hmjimg.com/2023/05/13/GTOV3-917.md.jpg (https://hostmyjunk.com/image/M7ksY)

I decided to leave the intercooler in raw aluminum, but I went over all of the surfaces with the red 3M pad to give it a brushed look.

https://j.hmjimg.com/2023/05/13/GTOV3-918.md.jpg (https://hostmyjunk.com/image/M7fEi)

I taped off the plate with my business logo, so it would stay natural. The engraving would lose all the detail if I was to paint it.

https://j.hmjimg.com/2023/05/13/GTOV3-919.md.jpg (https://hostmyjunk.com/image/M7UA7)

I set everything back on the engine so that the Cerakote can fully cure.

https://j.hmjimg.com/2023/05/13/GTOV3-920.md.jpg (https://hostmyjunk.com/image/M7CRH)

Different angle...

https://j.hmjimg.com/2023/05/13/GTOV3-921.md.jpg (https://hostmyjunk.com/image/M7qHe)

Here is a shot showing the compressor housing.

https://j.hmjimg.com/2023/05/13/GTOV3-922.md.jpg (https://hostmyjunk.com/image/M7PQD)

I did not mess around with the charge pipe because I want it to fully cure. Now, if I can only find all of the o-rings that I need to finally assemble everything....:hmm:

Andrew

GTO Jack

05-13-2023, 06:48 PM

andrewb70

05-14-2023, 05:48 AM

That looks really good. I here it is sometimes a challenge to get it to look really nice. I think you made a mistake by showing your work here. Now you will have many many people asking you to do their parts for them.:)

I don't think people will want to pay what I would want to charge. It is all about the prep work. The actual application only took about 5 minutes for all of the parts. I just followed the instructions that were provided by Cerakote and used their middle of the road gun that they sell and a cheap Harbor Freight compressor with a disposable moisture trap. My set-up is not fancy.

Andrew

jetmech442

05-14-2023, 02:48 PM

STREETFIGHTER50

05-18-2023, 11:32 AM

Everything is looking beautiful Andrew! Tons of work done!

andrewb70

05-20-2023, 06:39 PM

I think it looks soo good having the brushed intercooler sandwiched with cerakote top and bottom, you have a really good eye for aesthetics. It's ben really fun watching the latest transformation and seeing how build quality gets more and more professional. I'm currently redoing a lot of the stuff I originally did when I as just trying to slap it together to get it working--looking to maybe get build quality up to the quality of your first iteration. You're a huge inspiration Andrew, keep it up man.

Everything is looking beautiful Andrew! Tons of work done!

Thank you for the kind words, gentlemen!!! I really appreciate it. I just got back from the Buick Nationals and I should make more progress next week.

Andrew

andrewb70

05-24-2023, 06:34 PM

I have ben working with The DriveShaft Shop for about 15 years on various projects. They were the ones that made the custom axles for my RX7 when installed a Ford Cobra Mustang rear diff in it. They were also the ones that made the single CV driveshaft for my GTO back in 2013 and also the dual CV driveshaft in the Cougar.

This time around they will be building a dual CV driveshaft for the GTO, but with a twist. They have some new, super strong CVs that they want to use on this project. The front slip yoke is already configured for it, but the rear needs an adapter, because the CV pinion yoke was made for the smaller CV. That said, they designed an adapter for me and sent me a 3D printed prototype for test fitting.

https://j.hmjimg.com/2023/05/24/GTOV3-923.md.jpg (https://hostmyjunk.com/image/M7eFm)

https://j.hmjimg.com/2023/05/24/GTOV3-924.md.jpg (https://hostmyjunk.com/image/M7RMw)

https://j.hmjimg.com/2023/05/24/GTOV3-925.md.jpg (https://hostmyjunk.com/image/M7JGU)

https://j.hmjimg.com/2023/05/24/GTOV3-926.md.jpg (https://hostmyjunk.com/image/M7LSP)

https://j.hmjimg.com/2023/05/24/GTOV3-927.md.jpg (https://hostmyjunk.com/image/M71UN)

We live in truly amazing times. As Vic likes to say "That's some Buck Rogers S**t!"

Andrew

Way2qwk4u

05-24-2023, 07:16 PM

Awesome. It’s is truly amazing that ppl can print up mock-ups and send them out. Saves so much time and materials.

andrewb70

06-03-2023, 06:45 PM

Today I had the opportunity to go work i the garage. I decided to tackle the intake manifold assembly and final installation.

The first step was to install the o-ring that seals the base with the intercooler. It is a single viton string that gets inserted into the machined groove, the ends are butted together, trimmed flush, and the a drop of super glue is used to hold it together.

https://j.hmjimg.com/2023/06/03/GTOV3-928.md.jpg (https://hostmyjunk.com/image/MLtEp)

The intercooler is bolted into place.

https://j.hmjimg.com/2023/06/03/GTOV3-929.md.jpg (https://hostmyjunk.com/image/ML6Pi)

Followed by the lid.

https://j.hmjimg.com/2023/06/03/GTOV3-930.md.jpg (https://hostmyjunk.com/image/MLAdR)

I also installed the all of the fuel injectors and rails. I used the rail brackets that came with the intake manifold, but I replaced all the hardware with ARP stainless fasters. I really like this combination of black and silver against the bronze intake manifold.

https://j.hmjimg.com/2023/06/03/GTOV3-931.md.jpg (https://hostmyjunk.com/image/MLnDo)

I took the masking take off the heads and cleaned everything with acetone.

https://j.hmjimg.com/2023/06/03/GTOV3-932.md.jpg (https://hostmyjunk.com/image/MLjOY)

Then I installed the intake manifold assembly on the engine. The intake manifold has o-rings that seal it against the heads. I also lubricated the mating surface so the intake can easily slide around and find a happy spot as it is being torqued down.

https://j.hmjimg.com/2023/06/03/GTOV3-933.md.jpg (https://hostmyjunk.com/image/MLkKH)

I used these stainless p-clamps for the oil feed line, again with the ARP bolts. Vic added these holes to the intake manifold months ago.

https://j.hmjimg.com/2023/06/03/GTOV3-934.md.jpg (https://hostmyjunk.com/image/MLYy7)

Here is a broader view that shows all the details of the stainless hardware, with black, against the bronze intake, with a pop of red on the valve covers to keep it interesting.

https://j.hmjimg.com/2023/06/03/GTOV3-935.md.jpg (https://hostmyjunk.com/image/MLIte)

Slowly, but surely...

Andrew

STREETFIGHTER50

06-03-2023, 08:49 PM

Lookin awesome!

GTO Jack

06-04-2023, 12:22 PM

andrewb70

06-04-2023, 08:26 PM

I see you piped your steam vent to the back of the water pump. Did GM ever do it this way? On my set up, I was told it must go to the high point of the radiator both for the air to go to the top, and that is the best place for a bit of suction on that line allowing it to work as designed.

GM had the steam vent going to a heater hose on the Trailblazers with the 5.3L. I have the Holley mid-mount system and their main water pump casting has provisions for the steam vent to go into the water pump. It is a legitimate place for it.

Anrew

andrewb70

06-27-2023, 02:43 PM

Progress has stalled a bit on the GTO, although I managed to take an interesting and useful detour. I was working with a local customer a couple of weeks ago and I noticed that his 5.4L Mustang GT500 engine had a very interesting looking sensor on the fuel rail. After some digging around I figured out that it is Bosch 0 261 230 093. What caught my eye is that one side of the sensor was in the rail while the other side had a vacuum nipple on it.

As I suspected this is a differential pressure (Delta P) sensor. It outputs the difference between rail pressure and manifold pressure (positive or negative).

You may wonder why we should care. I am glad you asked, because differential fuel pressure is actually what we really care about, not rail pressure. Another way to think of the differential pressure is the pressure across the injector discharge. Let's do an example:

Let's say you have a fuel system that is set to 60psi at the rail and there is no vacuum or boost reference on the regulator, or the regulator is not adjustable. This is a fairly common scenario with a LS swap, simple in-tank pump, and a Corvette style regulator. Let's also say that you have a moderate performance cam and the engine idle around 50kPa, which is about 15in/Hg, which is also about -7psi. Note that the units are all different, but they are describing the same thing, which is the amount of vacuum in the intake manifold when the engine is running.

In this scenario the rail pressure doesn't change, but what happens to the pressure across the injector discharge when the engine is running? Because of the vacuum that is generated by the engine, the differential pressure across the injectors is actually 67psi. In other words, the injectors act as if they flowed more. That is exactly what this sensor will read, because it measures differential pressure directly.

Consider a different scenario. Turbocharged engine, adjustable regulator with a vacuum line hooked up to it. Let's assume the same base pressure of 60psi. When the engine is running under the same conditions, a normal pressure sensor would show 53psi at the rail, but this sensor will still read true differential pressure, which in this case is 60psi. Take the same scenario under boost. Engine is making 10psi, rail pressure sensor will be reading 70psi, and this sensor will still read 60psi. The purpose of having a vacuum/boost referenced fuel system is in fact to maintain consistent differential fuel pressure.

This is a fun topic and if anyone has any questions, please post them.

Here is sensor mount that Vic machined.

https://j.hmjimg.com/2023/06/27/GTOV3-936.md.jpg (https://hostmyjunk.com/image/MeSRE)

https://j.hmjimg.com/2023/06/27/GTOV3-937.md.jpg (https://hostmyjunk.com/image/MeNMS)

https://j.hmjimg.com/2023/06/27/GTOV3-938.md.jpg (https://hostmyjunk.com/image/MeOAT)

It attaches right to the back of the rail with the AN-6 female to female union.

https://j.hmjimg.com/2023/06/27/GTOV3-939.md.jpg (https://hostmyjunk.com/image/MehVZ)

The eagle eyed will notice that it is mounted to the Cougar. I am using the Cougar to do the testing for the sensor.

Andrew

wfo guy

06-27-2023, 03:09 PM

Good topic. :)

sccacuda

06-28-2023, 05:38 AM

I don't totally understand why Ford would use this sensor. I know Chrysler and GM use a rail pressure sensor and then reference the MAP reading to calculate effective (differential) pressure for either pump speed, pulse width, or both. Any idea why the are using a combo sensor? Does the 5.4 not have a dedicated MAP sensor?

ryeguy2006a

06-28-2023, 06:01 AM

That's a very cool sensor Andrew! I'm curious what you will do with this data though? I don't have a lot of tuning experience, but wouldn't any discrepancy in the varying fuel pressures be accounted for with VE table adjustments? Or if you were using the Pressureworx module this sensor become just extra data?

andrewb70

07-20-2023, 06:49 PM

Progress on the GTO is a little slow, but moving along. I need to thank my friends at The DriveShaft Shop for making me a bullet proof, dual CV, carbon fiber driveshaft.

https://j.hmjimg.com/2023/07/20/GTOV3-940.md.jpg (https://hostmyjunk.com/image/MJRr3)

Here you can see the details of the 108mm non plunging CV and the carbon fiber tube.

https://j.hmjimg.com/2023/07/20/GTOV3-941.md.jpg (https://hostmyjunk.com/image/MJJZn)

This is their new design 8 bolt non-plunging CV. These are used on the Nissan GTR 2500+hp driveshafts. Good enough for this pile...

https://j.hmjimg.com/2023/07/20/GTOV3-942.md.jpg (https://hostmyjunk.com/image/MJ1C8)

Here you can see how it fits between the exhaust. There is plenty of clearance, so heat should not be a concern. Besides, there is a constant stream of air passing under the car while it is moving, which cools the exhaust.

https://j.hmjimg.com/2023/07/20/GTOV3-943.md.jpg (https://hostmyjunk.com/image/MJaa5)

Plenty of stick-out for any little movement from the rear end articulation and deflection.

https://j.hmjimg.com/2023/07/20/GTOV3-944.md.jpg (https://hostmyjunk.com/image/MJlf4)

Andrew

Josh@Ridetech

07-21-2023, 05:06 AM

Fancy! :cheers:

andrewb70

07-21-2023, 05:48 AM

Fancy! :cheers:

That's how I roll...LOL

Andrew

Way2qwk4u

07-21-2023, 06:04 AM

Looking good. Be ready for the fall cruise weather?

BlackHD

07-21-2023, 10:39 AM

That looks great Andrew!

Is the dual cv driveshaft that's on your cougar still a good choice for us less fancy people? lol

cpd004

07-22-2023, 03:11 AM

What are some advantages of CV over traditional? I would guess no U joint=less chance of vibration?

andrewb70

07-22-2023, 07:02 AM

Looking good. Be ready for the fall cruise weather?

Probably not. Things are moving too slowly to have it on the road this year, especially with the work that I am doing to the Cougar at the moment....:smoke:

Andrew

- - - Updated - - -

What are some advantages of CV over traditional? I would guess no U joint=less chance of vibration?

Using CVs on both ends makes driveline angles mostly irrelevant and yes, they run very smoothly at high speeds.

Andrew

langleylad

07-22-2023, 07:20 AM

Consider a different scenario. Turbocharged engine, adjustable regulator with a vacuum line hooked up to it. Let's assume the same base pressure of 60psi. When the engine is running under the same conditions, a normal pressure sensor would show 53psi at the rail, but this sensor will still read true differential pressure, which in this case is 60psi. Take the same scenario under boost. Engine is making 10psi, rail pressure sensor will be reading 70psi, and this sensor will still read 60psi. The purpose of having a vacuum/boost referenced fuel system is in fact to maintain consistent differential fuel pressure.

Andrew

Thanks for explaining this Andrew , as I'm very much a novice at this I found this info helpful. As I was checking out a data log recently I noticed that my fuel pressure at the regulator was 60lbs and the fuel rail pressure was 53lbs I thought there might be a problem but apparently not . Win !

Motown 454

07-22-2023, 12:54 PM

Those CV joints look really stout. The intake looks good all bolted in.

andrewb70

11-01-2023, 08:33 PM

Progress on the GTO has been slow, but it is still moving forward. Also, keeping two project cars moving forward is not the easiest...

That said, I have a small update on the GTO. A while back you might recall seeing pictures of when I had the GTO hood 3d scanned. The idea was to have a digital representation of the hood so that something could be made for the hole. When I was at LS Fest I met a couple of guys from a company called Reversion Raceworks. They specialize in custom 3D printing project, specifically for cars. I emailed them after the show and decided to work with them to design an insert for the hood.

They did the design work and I also had them print a prototype for fitment purposes. The print was done in PLA and as you can see it has thick layers. This was done to keep the print cheap and fast.

https://j.hmjimg.com/2023/11/01/GTOV3-945.jpg (https://hostmyjunk.com/image/orLA8)

https://j.hmjimg.com/2023/11/01/GTOV3-946.jpg (https://hostmyjunk.com/image/orqsa)

https://j.hmjimg.com/2023/11/01/GTOV3-947.jpg (https://hostmyjunk.com/image/orWGt)

https://j.hmjimg.com/2023/11/01/GTOV3-948.jpg (https://hostmyjunk.com/image/or4Mc)

The fit is spot on. It is as if it was made just for this hood...LOL

Now that the insert is done, I am thinking a clear acrylic cover would look pretty cool. My business logo can also be engraved on the bottom of the cover, so it would show through, but the top would be smooth.

What do y'all think?

Andrew

Jimbo1367

11-02-2023, 01:55 AM

That’s awesome. Great idea.

dhutton

11-02-2023, 02:15 AM

It looks great. What is the cost to have something like that done? I’ve always assumed it is quite high.

Don

ekmxryda

11-02-2023, 02:44 AM

Looks great Andrew,
So are you thinking a flat clear plate mounted on the bottom side?
If they gave you the CAD file for the printed part I could build a couple center concepts in Solidworks for you if you want.

ryeguy2006a

11-02-2023, 04:46 AM

I really like that idea Andrew! That insert looks fantastic even for a trial fit.

andrewb70

11-02-2023, 07:41 AM

That’s awesome. Great idea.

Thanks!

Looks great Andrew,
So are you thinking a flat clear plate mounted on the bottom side?
If they gave you the CAD file for the printed part I could build a couple center concepts in Solidworks for you if you want.

I was thinking the acrylic would not be a simple flat plate. As I understand it, acrylic can be machined similar to Delrin. So my idea was to have the top profile follow the lines of the hood and have my business logo engraves on the underside. PM headed your way...

I really like that idea Andrew! That insert looks fantastic even for a trial fit.

Thanks Ryan!

Andrew

andrewb70

02-26-2024, 08:01 PM

It has been a while since I have made progress on the GTO. Over the weekend I was hanging out with a friend of mine from Chicago and he was busting my balls about not having done already. He isn't wrong.

The mailman dropped off the new Tick Performance one piece o-ring for their intercooler (they also fit Holley HiRam and LoRam intakes) this morning, so it was the perfect opportunity to do something productive.

https://j.hmjimg.com/2024/02/26/IMG20240226140142.jpg (https://www.hostmyjunk.com/image/rOuBm)

The intake lid is on for good now.

https://j.hmjimg.com/2024/02/26/IMG20240226143224.jpg (https://www.hostmyjunk.com/image/rOb8P)

Over the winter I also ordered these grommets from SpearTech. I was going to do something fancy, but I think I am going to keep it simple.

https://j.hmjimg.com/2024/02/26/IMG20240226154104.jpg (https://www.hostmyjunk.com/image/rOSth)

Apparently I robbed the silicone coupler and clamps for the Cougar :facepalm:

https://j.hmjimg.com/2024/02/26/IMG20240226164733.jpg (https://www.hostmyjunk.com/image/rO3DN)

I was going to do fancy stuff with the harness, but I am going to keep it simple. I really want this thing running and driving before the summer.

Andrew

STREETFIGHTER50

02-27-2024, 01:08 AM

Haven’t seen this in a while. Sick Andrew!!

wfo guy

02-27-2024, 03:33 PM

Andrew, lack of time, lack of funds, lack of enthusiasm???? I believe you are quite a bit younger than me but to have 2 projects going plus the side work is certainly wearing. To make good planning to cover all of the bases is an art. In my case, the cold weather sucks the life from me. I'm so ready for summer again. :)

Steve68

02-28-2024, 06:24 AM

Andrew, what's the metal insulation you have on the firewall and the turbo exhaust, you probably already mentioned it tho,

thedugan

02-28-2024, 01:12 PM

I think it's from DEI. They also now make it in black.

Floor & Tunnel Shield II™ - 21" x 24" - Design Engineering, Inc (https://www.designengineering.com/floor-tunnel-shield-ii-21-x-24/)

andrewb70

09-22-2024, 07:37 PM

Andrew, what's the metal insulation you have on the firewall and the turbo exhaust, you probably already mentioned it tho,

The stuff on the firewall is this:
https://www.designengineering.com/heat-screen-36-x-20/

The downpipe was done by Header Shield. It is custom Inconel cladding with a ceramic barrier between the pipe and the cladding. It is formed and welded in place.

Clearly, I have been neglecting this thread. We have had a busy spring and summer. My wife and I moved to Denton Texas and I have been busy with my tuning business and with the new house. I finally have all of my garage stuff moved down here and the new space will be a lot better than I have ever had. It isn't a 60x40 shop, but it will be comfortable. The GTO has been parked in that space for a while and the Cougar is still in storage locally.

I did not have a car at LS Fest, but that gave me the opportunity to hang out and enjoy time with old friends and make new friends. This is just a portion of the gang that meets up at LS Fest.

https://j.hmjimg.com/2024/09/22/GTOV3-952.jpg (https://www.hostmyjunk.com/image/r58MS)

This LS Fest I was also working. I was in the TurboLamik booth promoting my remote tuning business as well as talking to people about the ZF8HP transmission swaps using the TurboLamik TCU.

https://j.hmjimg.com/2024/09/22/GTOV3-953.jpg (https://www.hostmyjunk.com/image/r5aVZ)

The TurboLamik guys came to visit from Poland and here we are with their US distributor. (from left to right: me, Lukas Lamik, Greg Drozd, Agnes Lamik, David Lamik)

https://j.hmjimg.com/2024/09/22/GTOV3-954.jpg (https://www.hostmyjunk.com/image/r5RRE)

We had two cars there with the ZF8HP swap. They happened to run their best passes for the weekend lined up against each other.

https://youtu.be/1TxJFYswFMY?si=nTc4_PnSdZ5T9DHq

Here is the time slip for that pass. Not bad for true street cars

https://j.hmjimg.com/2024/09/22/GTOV3-955.jpg (https://www.hostmyjunk.com/image/r5JAT)

Needless to say, after having experienced cars with the ZF8HP transmission, there was no way I was keeping the 4L80e in my GTO.

My Alabama buddies scored this big boy 8HP90 and it will be making its way under my GTO this fall.

https://j.hmjimg.com/2024/09/22/GTOV3-949.jpg (https://www.hostmyjunk.com/image/r54F3)

https://j.hmjimg.com/2024/09/22/GTOV3-950.jpg (https://www.hostmyjunk.com/image/r5Ls4)

https://j.hmjimg.com/2024/09/22/GTOV3-951.jpg (https://www.hostmyjunk.com/image/r51G5)

If anyone is interested in learning about the ZF8HP swap, shoot me an email: projectgattago at gmail dot com

Andrew

ryeguy2006a

09-23-2024, 07:07 AM

Glad to see you still plugging away!

andrewb70

09-23-2024, 08:02 AM

Glad to see you still plugging away!

Absolutely. Once the garage is organized, I am going to make a conscious effort to make progress every week.

Andrew

arcane73

09-24-2024, 07:22 AM

Once the garage is organized

I've been chasing that goal for years! One day.......

andrewb70

10-08-2024, 07:01 AM

As time passes, companies improve and refine their products. Such is the case with the Tick Performance intercooler brick. Originally I had purchased their first design, but they have since released their Ultra Low intercooler and this is the way I decided to go.

https://j.hmjimg.com/2024/10/08/GTOV3-956.jpg (https://www.hostmyjunk.com/image/r9XFY)

The Ultra Low intake has an integrated billet lid that reduces the overall height by 2 inches compared to their original intercooler and a Holley top.

https://j.hmjimg.com/2024/10/08/GTOV3-957.jpg (https://www.hostmyjunk.com/image/r9GSi)

Not only is the intake lower, but the throttle body mounting flange is also moved back, substantially, which generally improves fitment.

https://j.hmjimg.com/2024/10/08/GTOV3-958.jpg (https://www.hostmyjunk.com/image/r9ZUp)

With the lower intake, now there is ample room to reuse the shaker scoop. The shaker scoop is such a unique feature of this build, that I really do not want to change it.

https://j.hmjimg.com/2024/10/08/GTOV3-1002.jpg (https://www.hostmyjunk.com/image/r9OM7)

With the hood closed, you can see how much clearance there is now between the top of the intake and the bottom of the hood. As you might recall, that clearance was barely 1/4" with the other intake set-up.

https://j.hmjimg.com/2024/10/08/GTOV3-1001.jpg (https://www.hostmyjunk.com/image/r9NGR)

With the shaker scoop resting on the intake and the hood closed there is now ample room to make a mount that will attach the shaker to the engine.

https://j.hmjimg.com/2024/10/08/GTOV3-959.jpg (https://www.hostmyjunk.com/image/r5i4o)

With the throttle body now in a different location, the tube from the compressor outlet to the throttle body will need to be remade. I have been following Jon Volk's builds for years and he has inspired me to push the envelope.

I am using the Einstar 3D scanner to generate a 3D model which will then be used to designed the intake charge tube. The plan is to manufacture the intake charge tube by having it 3D printed from aluminum. I used foot powder spray on the engine to eliminate the shine, as the 3D scanners don't work well on shiny surfaces.

https://j.hmjimg.com/2024/10/08/GTOV3-1004.jpg (https://www.hostmyjunk.com/image/r9uVD)

Here is the resulting scan.

https://j.hmjimg.com/2024/10/08/GTOV3-1006.jpg (https://www.hostmyjunk.com/image/r93nh)

Progress is being made...

Andrew

Larry Callahan

10-09-2024, 05:26 AM

That's a work of art!

wfo guy

10-09-2024, 05:39 AM

Tech is a tool and with any tool, the better you become accustomed to it, the better the outcome. I understand what you said about pushing the envelope but having creativity or another pair of eyes does make a difference. Sometimes copying is the only answer. :) I like the hood scoop also. :)

andrewb70

10-16-2024, 10:54 AM

The new intake tube is in the design phase and it is looking pretty good.

A few months back I started working with HPR Tuning. They are a company that make various accessories for the 8HP transmissions. I told them that an adapter for the transmission cooler lines with a thermostat would be a real problem solver. So through a series of iterations and my input they finally have a product. It was also made in collaboration with Improved Racing.

https://j.hmjimg.com/2024/10/16/GTOV3-1007.jpg (https://www.hostmyjunk.com/image/r9xnt)

This part bolts to the side of the transmission after removing the threaded inserts.

https://j.hmjimg.com/2024/10/16/GTOV3-1008.jpg (https://www.hostmyjunk.com/image/r9mb8)

The thermostat starts to open at 160 degrees F and targets 165F as a stable point, with the benefit of quicker fluid warm-up.

https://j.hmjimg.com/2024/10/16/GTOV3-1009.jpg (https://www.hostmyjunk.com/image/r9ELc)

The o-rings seal against the ports on the transmission.

https://j.hmjimg.com/2024/10/16/GTOV3-1010.jpg (https://www.hostmyjunk.com/image/r90mn)

The inlet and outlet ports are AN-8. They are in stock on the Improved Racing website (https://www.improvedracing.com/challenger-charger-8hp-transmission-cooler-adapter-thermostat-160f.html).

Andrew

andrewb70

10-16-2024, 01:29 PM

Here are some progress pictures of the intake pipe.

https://j.hmjimg.com/2024/10/16/GTOV3-1011.png (https://www.hostmyjunk.com/image/r9DX4)

https://j.hmjimg.com/2024/10/16/GTOV3-1012.png (https://www.hostmyjunk.com/image/r95C3)

Andrew

ryeguy2006a

10-17-2024, 04:13 AM

Like I said on Instagram, that 3d scanning and intake tube is next level! Really nice transmission thermostat piece too.

andrewb70

10-17-2024, 07:49 PM

Like I said on Instagram, that 3d scanning and intake tube is next level! Really nice transmission thermostat piece too.

Thanks!

We are getting there!

https://j.hmjimg.com/2024/10/17/GTOV3-1013.jpg (https://www.hostmyjunk.com/image/r9Qo5)

https://j.hmjimg.com/2024/10/17/GTOV3-1014.jpg (https://www.hostmyjunk.com/image/r9nfS)

https://j.hmjimg.com/2024/10/17/GTOV3-1015.jpg (https://www.hostmyjunk.com/image/r9jcE)

https://j.hmjimg.com/2024/10/17/GTOV3-1016.jpg (https://www.hostmyjunk.com/image/r9t6Z)

https://j.hmjimg.com/2024/10/17/GTOV3-1017.jpg (https://www.hostmyjunk.com/image/r96lT)

The next step is to get a prototype printed in PLA to confirm fitment.

Andrew

ryeguy2006a

10-18-2024, 04:00 AM

That's so freaking cool.

andrewb70

10-18-2024, 11:28 AM

That's so freaking cool.

Thanks Ryan!

A generous fillet was added around the BOV mount and here is the final part:

https://j.hmjimg.com/2024/10/18/GTOV3-1018.jpg (https://www.hostmyjunk.com/image/r9ALd)

I ordered a prototype printed in PLA and it was less than $100 shipped. The aluminum part should come in under $600.

Andrew

Larry Callahan

10-18-2024, 01:15 PM

Thanks Ryan!

A generous fillet was added around the BOV mount and here is the final part:

https://j.hmjimg.com/2024/10/18/GTOV3-1018.jpg (https://www.hostmyjunk.com/image/r9ALd)

I ordered a prototype printed in PLA and it was less than $100 shipped. The aluminum part should come in under $600.

Andrew

Gotta love technology!

ryeguy2006a

10-21-2024, 04:24 AM

That's amazing! I can't wait to hear this thing roar to live!

Pedigry

10-21-2024, 06:23 AM

Next level. It looks great.

andrewb70

10-26-2024, 05:12 PM

That's amazing! I can't wait to hear this thing roar to live!

Next level. It looks great.

Thanks guys. The PLA prototype should be here in a few days. I am really excited to check the fitment.

Andrew

Steve68

10-27-2024, 07:05 AM

The stuff on the firewall is this:
https://www.designengineering.com/heat-screen-36-x-20/

The downpipe was done by Header Shield. It is custom Inconel cladding with a ceramic barrier between the pipe and the cladding. It is formed and welded in place.

I think it's from DEI. They also now make it in black.

Floor & Tunnel Shield II™ - 21" x 24" - Design Engineering, Inc

Thanks for the info....

Your Inconel cover reminds me of SSME (Shuttle Main Engines) it was all over pipes in places,

I wonder how the floor shield would work in the inside of the firewall, or outside might be better, still wanting to the Cascade products inside,

andrewb70

10-30-2024, 01:46 PM

We are living in marvelous times.

https://j.hmjimg.com/2024/10/30/GTOV3-1019.jpg (https://www.hostmyjunk.com/image/r9fho)

https://j.hmjimg.com/2024/10/30/GTOV3-1020.jpg (https://www.hostmyjunk.com/image/r9ICY)

https://j.hmjimg.com/2024/10/30/GTOV3-1021.jpg (https://www.hostmyjunk.com/image/r9kmi)

If I can only find the BOV in a box somewhere so I can confirm fitment....::facepalm::

Andrew

andrewb70

11-02-2024, 02:49 PM

BOV fitment confirmed:

https://j.hmjimg.com/2024/11/02/GTOV3-1022.md.jpg (https://www.hostmyjunk.com/image/rDG6a)

https://j.hmjimg.com/2024/11/02/GTOV3-1023.md.jpg (https://www.hostmyjunk.com/image/r9ygK)

Andrew

ryeguy2006a

11-04-2024, 05:01 AM

Looks great Andrew!

wfo guy

11-04-2024, 07:23 AM

Tech is wonderful when used in capable hands. :) Nice.

Larry Callahan

11-04-2024, 06:06 PM

Love it!! I so need a 3d printer.

andrewb70

11-07-2024, 08:11 AM

Love it!! I so need a 3d printer.

Unless you plan to do a lot of printing, I see no reason to own a 3D printer. I use CraftCloud and let the professionals do the printing.

Here is the updates design. The BOV location was moved, the logo was moved, and there wall thickness on the little nipple by the compressor exit was increased (not visible).

https://j.hmjimg.com/2024/11/07/GTOV3-1024.png (https://www.hostmyjunk.com/image/rDN08)

https://j.hmjimg.com/2024/11/07/GTOV3-1025.png (https://www.hostmyjunk.com/image/rDzuc)

https://j.hmjimg.com/2024/11/07/GTOV3-1026.png (https://www.hostmyjunk.com/image/rDhr4)

https://j.hmjimg.com/2024/11/07/GTOV3-1027.png (https://www.hostmyjunk.com/image/rDXet)

https://j.hmjimg.com/2024/11/07/GTOV3-1028.png (https://www.hostmyjunk.com/image/rDbz3)

https://j.hmjimg.com/2024/11/07/GTOV3-1029.png (https://www.hostmyjunk.com/image/rDOTn)

Andrew

ryeguy2006a

11-07-2024, 12:52 PM

JustJohn

11-08-2024, 05:07 AM

What 3D scanner are you using? I'm starting to look at handhelds for our engineering lab to do exactly what you are.

andrewb70

11-08-2024, 07:57 PM

Looks fantastic Andrew. I like how the BOV is more hidden. Question though, does the placement of the BOV matter as much as the placement of the wastegate? I know the wastegate likes to see more direct exhaust flow to be more accurate.

The placement is not as critical as the wastegate. It should be as close to the TB as possible. THe purpose of the BOV is to vent the pressure wave inside the intake tube when the throttle is slammed shut but the turbo is still spinning at high speed. By venting it close to the TB, the pressure wave is kept from slapping back into the compressor.

What 3D scanner are you using? I'm starting to look at handhelds for our engineering lab to do exactly what you are.

I have the Shining 3D Einstar.

Andrew

chevyz240

11-14-2024, 08:38 PM

Thanks!

We are getting there!

https://j.hmjimg.com/2024/10/17/GTOV3-1013.jpg (https://www.hostmyjunk.com/image/r9Qo5)

https://j.hmjimg.com/2024/10/17/GTOV3-1014.jpg (https://www.hostmyjunk.com/image/r9nfS)

https://j.hmjimg.com/2024/10/17/GTOV3-1015.jpg (https://www.hostmyjunk.com/image/r9jcE)

https://j.hmjimg.com/2024/10/17/GTOV3-1016.jpg (https://www.hostmyjunk.com/image/r9t6Z)

https://j.hmjimg.com/2024/10/17/GTOV3-1017.jpg (https://www.hostmyjunk.com/image/r96lT)

The next step is to get a prototype printed in PLA to confirm fitment.

Andrew

This looks really good, Andrew! That 3D scanner, does it work well? Are there lots of adjustments and settings to get correct before getting a good result, or is it just to shoot straight out of the box? Have you done some tests to see the accuracy of the scans?

Thanks,
Henrik

STREETFIGHTER50

11-14-2024, 10:53 PM

That’s sick Andrew!!

andrewb70

11-15-2024, 09:00 AM

This looks really good, Andrew! That 3D scanner, does it work well? Are there lots of adjustments and settings to get correct before getting a good result, or is it just to shoot straight out of the box? Have you done some tests to see the accuracy of the scans?

Thanks,
Henrik

Hi Henrik,

There is a little bit of a learning curve with the 3D scanning, but there are many videos on YouTube that were helpful. The laptop that I am using is marginal, so having a powerful computer would make the task easier. I have not done any tests to measure accuracy, but for what I am using it for, the accuracy seems to be good.

That’s sick Andrew!!

Thank you!

Here is the second prototype printed in carbon reinforced PETG.

https://j.hmjimg.com/2024/11/15/GTOV3-1030.jpg (https://www.hostmyjunk.com/image/rDc1Z)

https://j.hmjimg.com/2024/11/15/GTOV3-1031.jpg (https://www.hostmyjunk.com/image/rD3vS)

https://j.hmjimg.com/2024/11/15/GTOV3-1032.jpg (https://www.hostmyjunk.com/image/rDV7E)

https://j.hmjimg.com/2024/11/15/GTOV3-1033.jpg (https://www.hostmyjunk.com/image/rDHgT)

https://j.hmjimg.com/2024/11/15/GTOV3-1034.jpg (https://www.hostmyjunk.com/image/rDuk5)

I like the new BOV placement and the slightly repositioned logo.

The next step is to have the final version printed in aluminum.

Andrew

andrewb70

11-16-2024, 06:53 PM

While the intake pipe is being made, I had my friend Blake design me another little part. He then printed some prototypes on his home 3D printer.

https://j.hmjimg.com/2024/11/16/GTOV3-1035.jpg (https://www.hostmyjunk.com/image/rD25o)

These are mounts for the fuel rails. They will be printed out of stainless steel.

https://j.hmjimg.com/2024/11/16/GTOV3-1036.jpg (https://www.hostmyjunk.com/image/rDKTi)

Here is bracket that came with the intake manifold kit.

https://j.hmjimg.com/2024/11/16/GTOV3-1037.jpg (https://www.hostmyjunk.com/image/rDpud)

Andrew

Way2qwk4u

11-18-2024, 03:10 PM

andrewb70

11-21-2024, 03:09 PM

Now I am liking that alot. Sure are in awesome time of advancement. :-)

Thanks! These should be done being printed in stainless soon.

The 8HP90 that I picked up had a mystery converter in it. It didn't look stock and frankly I didn't trust it. So I called up Circle D and had a discussion about my requirements. Here is what they suggested:

https://j.hmjimg.com/2024/11/21/GTOV3-1038.jpg (https://www.hostmyjunk.com/image/rDozY)

This is their hybrid 8HP90 converter. Externally it is the same size as the 8HP70 converter, which is 1/2" smaller in diameter than a stock 90 converter, but internally it is built to work with the 8HP90 transmission.

Here you can also see the Domiworks bellhousing adapter.

https://j.hmjimg.com/2024/11/21/GTOV3-1039.jpg (https://www.hostmyjunk.com/image/rDrwp)

and the Domiworks converter adapter.

https://j.hmjimg.com/2024/11/21/GTOV3-1040.jpg (https://www.hostmyjunk.com/image/rDwkR)

Andrew

chevyz240

11-21-2024, 10:59 PM

[QUOTE=andrewb70;1399621]Hi Henrik,

There is a little bit of a learning curve with the 3D scanning, but there are many videos on YouTube that were helpful. The laptop that I am using is marginal, so having a powerful computer would make the task easier. I have not done any tests to measure accuracy, but for what I am using it for, the accuracy seems to be good.

Thanks, Andrew!

I have been using our $100.000 FaroArm we have at work, but even with such an expensive piece of equipment, sometimes it's not so easy to get a good result.

ryeguy2006a

11-22-2024, 04:57 AM

Fantastic update Andrew! Love the new parts.

andrewb70

11-22-2024, 07:40 AM

Fantastic update Andrew! Love the new parts.

Thanks. I can hopefully get the 90 installed in the GTO and figure out what needs to be done with the tunnel and crossmember. Preliminary indications are that the Holley crossmember will work perfectly with the 8HP.

Andrew

andrewb70

11-29-2024, 07:21 PM

I had a little care package delivered today. Here are the fuel rail brackets, printed in stainless steel.

https://j.hmjimg.com/2024/11/29/GTOV3-1041.jpg (https://www.hostmyjunk.com/image/rDxv7)

https://j.hmjimg.com/2024/11/29/GTOV3-1042.jpg (https://www.hostmyjunk.com/image/rDFpH)

Tomorrow I will drill and tap as needed and maybe run the sides over some emery cloth on a granite block.

Andrew

wfo guy

11-30-2024, 06:34 AM

Really nice parts. I realize that all that machine work is hidden but we know it's there. :)

dhutton

11-30-2024, 09:19 AM

Hi Andrew. How strong is the printed stainless steel? Is it conductive like metal? Is it resin based? Just curious… :)

Don

Steve68

12-01-2024, 08:09 AM

I'm with him^^^^^^

Good questions,

andrewb70

12-02-2024, 06:11 AM

Hi Andrew. How strong is the printed stainless steel? Is it conductive like metal? Is it resin based? Just curious… :)

Don

I'm with him^^^^^^

Good questions,

Good questions. These parts are metal and have all properties of metal and can in fact be welded like any other metal part. Resin is not used in any part of the manufacturing process. The stainless steel is actually very hard and drilling and tapping the holes was a challenge. In fact, the material is so hard that my files barely worked.

I used a bench-top drill press and a step drill to open up the holes on the front and on the bottom.

https://j.hmjimg.com/2024/12/02/GTOV3-1043.md.jpg (https://www.hostmyjunk.com/image/rDTNn)

https://j.hmjimg.com/2024/12/02/GTOV3-1044.md.jpg (https://www.hostmyjunk.com/image/rDs9c)

Here they are mounted to the intake and holding up the fuel rails.

https://j.hmjimg.com/2024/12/02/GTOV3-1048.md.jpg (https://www.hostmyjunk.com/image/rDqx3)

https://j.hmjimg.com/2024/12/02/GTOV3-1047.md.jpg (https://www.hostmyjunk.com/image/rDUq8)

Andrew

ryeguy2006a

12-02-2024, 11:01 AM

Really cool Andrew!

andrewb70

12-03-2024, 07:36 PM

Really cool Andrew!

Thanks Ryan!

Andrew

Ron S

12-04-2024, 02:44 AM

Dying to know how you like that transmission, and how hard it was to tune.

andrewb70

12-06-2024, 07:45 PM

Here is the final raw, 3D printed aluminum charge pipe:

https://j.hmjimg.com/2024/12/06/GTOV3-1049.md.jpg (https://www.hostmyjunk.com/image/rDWi5)

https://j.hmjimg.com/2024/12/06/GTOV3-1050.md.jpg (https://www.hostmyjunk.com/image/rD18E)

https://j.hmjimg.com/2024/12/06/GTOV3-1051.md.jpg (https://www.hostmyjunk.com/image/rDPI4)

https://j.hmjimg.com/2024/12/06/GTOV3-1052.md.jpg (https://www.hostmyjunk.com/image/rDL2S)

https://j.hmjimg.com/2024/12/06/GTOV3-1053.md.jpg (https://www.hostmyjunk.com/image/rDejT)

Andrew

wfo guy

12-07-2024, 06:36 AM

Woo Hoo! :)

Steve68

12-07-2024, 07:50 AM

Aluminum! now that is cool, looks good,

andrewb70

12-07-2024, 02:23 PM

I ran across some videos by Devin Vanderhoof. It seems that he too has discovered the Hardwire Electronics PDM products. In fact, he has become the biggest distributor in the US for Hardwire. As you may recall, I already have a PDM 25 under the dash, but after seeing the videos for the new PDM 28, I knew that's what I needed in the GTO. I will use the PDM 25 in the Cougar or the Suburban.

Here is the PDM 28 as it arrived.

https://j.hmjimg.com/2024/12/07/GTOV3-1054.md.jpg (https://www.hostmyjunk.com/image/rDJBZ)

The size of the PDM 28 is substantial. Here you can see it compared to the Holley Dominator ECU. They are roughly the same size.

The reason for choosing the new PDM 28 is that it has two CAN busses. With the release of the Holly CAN documentation, the PDM 28 is fully compatible with Holley EFI.

https://j.hmjimg.com/2024/12/07/GTOV3-1055.md.jpg (https://www.hostmyjunk.com/image/rDvNi)

Holley had a 3D model of the Dominator available for download.

https://j.hmjimg.com/2024/12/07/GTOV3-1056.md.jpg (https://www.hostmyjunk.com/image/rDlPo)

An email to Hardwire provided the 3D model of the PDM 28.

https://j.hmjimg.com/2024/12/07/GTOV3-1057.md.jpg (https://www.hostmyjunk.com/image/rDR9d)

I once again used my Shining 3D Einstar 3D scanner and generated a scan of the GTO dash and glove box area.

https://youtube.com/shorts/mhHSHdmFsCI?si=vJpASozBE8DwvHC6

The plan is to design a mounting system for the Dominator and the PDM in the area that used to be occupied by the glove box.

Andrew

ryeguy2006a

12-16-2024, 09:58 AM

Looks fantastic Andrew! What are the benefits of the updated 28 vs the 25 PDM?

Larry R

12-24-2024, 10:44 AM

Looking good Andrew.

andrewb70

01-13-2025, 07:36 PM

Having a 3D scanner and a competent designer on call has really improved the overall quality of this build. I also want to thank Brian Wolf from Send Cut Send for helping out with this particular project.

I started with a 3D scan of the glovebox area without the glovebox. We obtained models of the Dominator and the Hardwire PDM from Holley and Hardwire and they were used to mock-up a mounting solution.

https://j.hmjimg.com/2025/01/13/GTOV3-1058.jpg (https://www.hostmyjunk.com/image/rQmy4)

I wanted the LEDs on the PDM to be easily visible and I wanted the connectors to also be easily accessible. The tandem stacked arrangement is what we came up with.

https://j.hmjimg.com/2025/01/13/GTOV3-1059.jpg (https://www.hostmyjunk.com/image/rQ5K5)

James created the DXF files with SolidWorks and I uploaded them to Send Cut Send. They not only did the laser cutting but also the bending. Today I finally got the package after a bit of a delay due to the weather.

https://j.hmjimg.com/2025/01/13/GTOV3-1060.jpg (https://www.hostmyjunk.com/image/rQDJT)

I expected to have to do some fiddling around with the bracket to get it to fit, but it dropped right in. The 3 holes that hold the glove box door lined up perfectly, as did the two slots up at the top.

https://j.hmjimg.com/2025/01/13/GTOV3-1061.jpg (https://www.hostmyjunk.com/image/rQ9AS)

I couldn't be happier with this solution.

Andrew

wfo guy

01-14-2025, 07:42 AM

Paint, powder coat or other???? Looks good. Accurate measuring equals good results. :)

ryeguy2006a

01-14-2025, 08:36 AM

So cool Andrew. Love seeing your updates.

andrewb70

01-14-2025, 06:25 PM

Paint, powder coat or other???? Looks good. Accurate measuring equals good results. :)

Keeping it natural. It's a bracket that lives under the dash. This isn't a show car...LOL

So cool Andrew. Love seeing your updates.

Thanks Ryan!

Andrew

andrewb70

01-18-2025, 07:17 PM

I am making slow progress. In the last installment I posted the bracket that will hold the Holley Dominator ECU and the Hardwire PDM. Today I got a care package from McMaster Carr with some hardware.

The Dominator case is not supposed to be grounded to the car chassis. It actually has plastic and rubber mounts that are already inserted into the case. However, to isolate it more, I used rubber nut threaded inserts. To fasten the auxiliary bracket to the main bracket I used U-nuts.

https://j.hmjimg.com/2025/01/18/GTOV3-1062.jpg (https://www.hostmyjunk.com/image/rQ6QZ)

Here you can see how it all fits together.

https://j.hmjimg.com/2025/01/18/GTOV3-1063.jpg (https://www.hostmyjunk.com/image/rQ7Wd)

Unfortunately, the holes in the PDM are too small for #10 screws, so I have to #8 screws and corresponding U-nuts. I used a temporary support for picture purposes. LOL

https://j.hmjimg.com/2025/01/18/GTOV3-1064.jpg (https://www.hostmyjunk.com/image/rQnHE)

Andrew