1970 GTO Version 3.0

[wfo guy]

It appeared to me that the man in the video had EPAS as well. Rather than deal with noisy PS pumps and hydroboost, this bears further research. Thanks, Andrew.

[andrewb70]

It appeared to me that the man in the video had EPAS as well. Rather than deal with noisy PS pumps and hydroboost, this bears further research. Thanks, Andrew.

The man in the video, Matt, used the same EPAS that I have on my Cougar.

Andrew

[andrewb70]

Advantage of the Borgeson over the AGR?

Everyone seems to really like the feel of the Borgeson box. I always found the feel of the AGR a little vague on center. I am hoping the Borgeson box is better in that respect.

Andrew

[gto406]

This morning I spent a few hours trying to help a local customer with a Coyote no-start issue, so I didn't have time mess with the car. But Vic sent me these pictures in the afternoon.



I think as far as looks go, it looks pretty good.



Tomorrow I will have a chance to go se it in person and se what kind of clearance there is with the hood. We are also going to install the Ring Brothers billet hinges, just to make sure everything fits the way it should.

Andrew

Looks great Andrew. I have the RB hinges on my ‘69 Firebird and they are great. RB really make very high quality parts. The billet hood hinges on my GTO have already been through 1 set of gas struts (they are not Ring Brothers) and the hinges are only about 5 yrs old.

[andrewb70]

Looks great Andrew. I have the RB hinges on my ‘69 Firebird and they are great. RB really make very high quality parts. The billet hood hinges on my GTO have already been through 1 set of gas struts (they are not Ring Brothers) and the hinges are only about 5 yrs old.

Thanks for the kind words. I really like the RB hinges. The hood fits better than it ever has, although the fact that the hood doesn't open as much is a little annoying.

Andrew

[andrewb70]

Before the next update, I want to send a shout out to a great vendor. It is not often that a company surpasses my expectations, but Stainless Bros definitely has.

This is how they packaged one half of the 4" v-band clams that I received from them.



Each v-band was in it's own box and the clamp itself was in its own sealed bag.



The v-bands themselves are like jewelry. Each half indexes into the other, which is a great feature that makes it easier to align the pipes.



I was also able to make it out to my local Napa store and picked up a roll of 5/16" butyl tape. I used it so seal the back of the close-out panel that I made the other day.



I was also able to use the boot that came from DSE. This is a boot they use with their low angle vacuum assisted booster.



Once the iBooster is installed the plate isn't really visible.




I also started on the new brake lines. I am using 3/16" NiCopp for the front brakes and 1/4" NiCopp for the rear brakes. The 12mm flare to AN adapters are from Earl's. I am not really happy with how far they stick out, but I am not sure what there is to do about it.



I also got this Cummins turbo drain as a starting point for my drain. More on that in a future update.



Andrew

[wfo guy]

What is the logic for 1/4" lines to the rear?

[andrewb70]

What is the logic for 1/4" lines to the rear?

That's what was there...:shrug:

Andrew

[ryeguy2006a]

Those v-bands are nice! I welded those to the headers on my Camaro. Having the male/female fitment helps a lot with fitting the pipes up.

FWIW, I used 3/16" NiCopp lines front and rear on the Camaro when I did the lines. I think with rear drums it's important to have more fluid movement, but don't think it will change anything with disk brakes.

[wfo guy]

Andrew, years ago I exp. with 1/4" lines on a dragster. It was the wrong direction. There's a bunch of math you can do about volume and pressure drop, but I believe you will be happier if you only use 3/16". The only time I use 1/4" is on a throughout bearing. then it allows for a quicker release on the bearing. I learned that from Chuck Neal who was CNC brake co.

[andrewb70]

The line from the distribution block is 1/4" running the full length of the car. I'm not changing that. I can't see how this short run from the MC to the distribution block is going to make much difference. But I'm open to being educated...

Andrew

[andrewb70]

I spent a little time at Vic's today working on various odds and ends.

This is a clever little part from Motion Raceworks. It's an oil inlet block that bolts to the top of the oil feed hole and seals with an o-ring. It then points the oil feed line straight out the side. This will connect to the oil feed line, which at the moment terminates at the front of the passenger side head.



A few days back Vic also made this fantastic mount for the Dominator ECU. It bolts in place of the glove box and will allow me easy access to the ECU connectors. Ignore the duct tape. I will be placing an order with Vintage Air soon to clean up the under-dash ducting in anticipation of having working AC in the car.



I also brought the shifter to see how it might fit inside the car. In the picture I have it sitting over the hole where my manual shifter was located. It is slightly offset to the driver's side. I am not really sure about the shifter placement yet.



Vic worked out the final placement of the waste gate and started on the fabrication of the needed plumbing.



It should have good priority flow in this location and provide an easy path to route the exhaust from the waste gate back into the downpipe.



Andrew

[ryeguy2006a]

Loving the updates Andrew. The fab work is really coming together. I really like that you are routing the wastegate back into the primary exhaust.

[matthimself456]

I'm sure this is a dumb question but why the need to adapt to AN from the iBooster? Is it just because the flare on the iBooster is metric?

[andrewb70]

I'm sure this is a dumb question but why the need to adapt to AN from the iBooster? Is it just because the flare on the iBooster is metric?

It is just what I did. I am sure there are other solutions.

Andrew

[wfo guy]

Andrew, I have been ordering Vintage Air from Summit and Yogis' because they have it in stock. Yogis' has a reduced barrier line of hoses that are really nice to work with. He has the TBI line of compressors that can save you a little money if you're interested. I was going to plumb my last project with hard lines as much as possible but whimped out because of time. many have run the lines under the inner fender panels for a cleaner look as I'm sure you know. Lots of choices.

[andrewb70]

Andrew, I have been ordering Vintage Air from Summit and Yogis' because they have it in stock. Yogis' has a reduced barrier line of hoses that are really nice to work with. He has the TBI line of compressors that can save you a little money if you're interested. I was going to plumb my last project with hard lines as much as possible but whimped out because of time. many have run the lines under the inner fender panels for a cleaner look as I'm sure you know. Lots of choices.

Thanks for the tips!

Finally I can say I did a few things on the car, mostly by myself...LOL

Yesterday I received the last few parts that I needed to finish the new brake lines from the MC to the distribution block.



I also welded on this oil drain tube. Vic made a couple of adapters on the lathe and I welded it together. The welds are horrible, but it should hold. Because of how everything is situated, the drain has to take a slight jog to the passenger side immediately after coming out of the turbo. This is a turbo drain for a Cummins something or other. It is fairly flexible and is made out of stainless steel, so it is relatively easy to work with.



Once it makes the jog to the left is has to sweep right, under the up-pipe and under the exhaust manifold, then towards the drain in the side of the oil pan. I will extend this tube so it is all metal under the hottest pipes and there will be a short section of hose connecting the drain to the oil pan.



The waste gate discharge is tacked to the downpipe.



The downpipe itself is also tacked in place.



There is also a 4" v-band at the end of the downpipe that connects to this pipe that shoots the exhaust straight back.



I am not sure yet what's going to happen with the exhaust once it is past the transmission crossmember.

Andrew

[Way2qwk4u]

Making progress looking good! Cant wait to see it completed. And you are going to cause me to have mission creep on my car. Did not even know that there was a thing called an Ibooster. :-)

[wfo guy]

Andrew, have you seen this?
https://youtu.be/jipoLJToCjM

[andrewb70]

Andrew, have you seen this?
https://youtu.be/jipoLJToCjM

I have not, but I'll take a look.

Andrew