my olds 455 efi conversion

[hessdawg]

started with some tech drawings
https://static1.pt-content.com/images/pt/2011/08/48256a2c-1.jpg

measured fuel rail drill points

https://static1.pt-content.com/images/pt/2011/08/a50b8cc5-1.jpg

drilled fuel rail pilots
https://static1.pt-content.com/images/pt/2011/08/ebab52a1-1.jpg

set up intake on drill
https://static1.pt-content.com/images/pt/2011/08/1a38e25f-1.jpg

all drilled out

https://static1.pt-content.com/images/pt/2011/08/6e076d73-1.jpg

epoxying the bungs in
https://static1.pt-content.com/images/pt/2011/08/IMG_0900-1.jpg

grind and re-epoxy underside

https://static1.pt-content.com/images/pt/2011/08/IMG_0905-1.jpg

checking to see if i have room with a 2 inch spacer
https://static1.pt-content.com/images/pt/2011/08/IMG_0896-1.jpg

https://static1.pt-content.com/images/pt/2011/08/IMG_0893-1.jpg

tapped up for paint

https://static1.pt-content.com/images/pt/2011/08/IMG_0917-1.jpg

por 15 black sprayed

https://static1.pt-content.com/images/pt/2011/08/IMG_0929-2.jpg

por15 engine enamel aluminium

https://static1.pt-content.com/images/pt/2011/08/IMG_0932-1.jpg

[Roadrage David]

that is so cool will the Por 15 hold due to the heat???.

[hessdawg]

yes that's what the recommend

[hessdawg]

got the valve covers on
https://static1.pt-content.com/images/pt/2011/08/4c3844ea-1.jpg

got fuel rail mounted
https://static1.pt-content.com/images/pt/2011/08/73eab64e-1.jpg
https://static1.pt-content.com/images/pt/2011/08/60badafa-1.jpg

got injectors wired and pcv run
https://static1.pt-content.com/images/pt/2011/08/969f5877-1.jpg

[72BBSwinger]

Love the do it yourself injector bungs. Very motivating.

[Yelcamino]

epoxying the bungs in
https://static1.pt-content.com/images/pt/2011/08/IMG_0900-1.jpg



Everything looks great, just curious though, why did you choose to epoxy the bungs vs welding?

[hessdawg]

well i wanted to weld but i don't have a tig and couldn't find a shop to do it for me.
i had also seen many guys do it on the megesquirt forums so if it good enough for them its good enough for me

[rohrt]

Coool!

[Ollie8974]

2X on the epoxy vs welding. Helps keep the cost down. Especially if you hav to pay someone to do the welding.
hessdawg,
What brand epoxy did you use.

[John Wright]

Neat project....the fuel rails polished up nice.

What determines the length of those injector bosses? I've seen them where the injector tip is sticking out into the intake runner quite a ways and then others are way up inside the boss and can't be seen, like these.

[Ollie8974]

I would say the design of the manifold. The installed height of the injectors should all be the same so that the injectors all plug into the fuel rail equally.

[hessdawg]

2X on the epoxy vs welding. Helps keep the cost down. Especially if you hav to pay someone to do the welding.
hessdawg,
What brand epoxy did you use.

i used what everybody else that i talked to had used. the jbweld regular not quick

[hessdawg]

Neat project....the fuel rails polished up nice.

What determines the length of those injector bosses? I've seen them where the injector tip is sticking out into the intake runner quite a ways and then others are way up inside the boss and can't be seen, like these.
depending on the spray pattern of the injector.you usually want to tip of the injector flush with the intake runner

[Yelcamino]

well i wanted to weld but i don't have a tig and couldn't find a shop to do it for me.
i had also seen many guys do it on the megesquirt forums so if it good enough for them its good enough for me

Ok, I was just wondering is all.

[bsilverblatt]

Sorry to resurrect an old thread, but I was wondering where you got these technical drawings from... [QUOTE=hessdawg;828174]started with some tech drawings https://static1.pt-content.com/images/noimg.gif

[hessdawg]

They were in the back of a monello book

[hessdawg]

In the car and running, but still needs some work
http://youtu.be/Y_GcjQgP4tk

[HurstOlds]

Really nice setup!

I've been kicking around the idea of converting my 455 over to an EFI setup. Have you posted more in depth details on your setup elsewhere? You mentioned you're using a MegaSquirt setup?

What's your increase in MPG after you converted? I currently get around 8 mpg with my carb setup. That's what I'm mainly looking to improve upon

[Derek@ModernSpeed]

I may have missed it, what electronics are you using?

[Ollie8974]

He is using MegaSquirt.

[hessdawg]

Really nice setup!

I've been kicking around the idea of converting my 455 over to an EFI setup. Have you posted more in depth details on your setup elsewhere? You mentioned you're using a MegaSquirt setup?

What's your increase in MPG after you converted? I currently get around 8 mpg with my carb setup. That's what I'm mainly looking to improve upon
Haven't done a in depth build. log let me know if you have any questions on the set up
I had a Holley 926 and I would usually get around 7 or 8 mpg with a th350 and a 3.23 rear end
When I swapped to Holley projection tbi and a 200r4 with the same rear end it the best I got was 17mpg
It now has full sequential fuel and spark ms3x same 200r4 I'd like to go to a t56 double overdrive
But I now have a 4.11 rear end. Car isn't on The road yet so im not sure what what my mpg will be

[hessdawg]

I may have missed it, what electronics are you using?

Ollie is correct a ms3x from megasquirt

[hessdawg]

Engine in the car
Plumbed and wired


https://static1.pt-content.com/images/pt/2014/04/e01cea81dc8941d4d7b43aa300e8711f-1.jpg

[Dusted]

More pics soon?