Turbo installation help plz

[Guest]

I wouln'd use stock bellows on a turbo app. They are too thin and prob weak from age, exposure. Use new flex bellows...perfered steel..or stainless.
http://www.turbosedan.com/cutlass/engine/DSC01614.JPG (Joshua..aka.."TurboSadan" Pic)
This is the kind of bellow to use. Use something similar. Put one on each bank of the engine to keep the left and right bank isolated and the turbo isolated. You just need two...and one big one for the Down pipe...but not really nasisary unless you worry about engine rock.

On that mig..I think they make a foot switch for it. I feel you though..I have a cheap Arc welder.

That's actually refered to as a flex pipe, which is based off the ribbed part of a bellows with extra reinforcment. Un-nessisary when the crossover is designed correctly.

I used a used stock bellows for my turbo build, have had no issues with it.

One of the biggest differences I have seen between the factory bellows and most aftermarket flexpipes is that the factpry bellows has a slip joint design inside the bellows that most flex joints do not have. The slip joint makes it stronger and better for flow than a flex joint.

[TurboGTU]

Actually the said "flex pipe" has the pipes overlaped in the x-over pipe ..or one inside the other...the flex bellow provides the seal..so the air goes smoth..and the heat doesn't directly heat it. It will work nicely. I havn't seen the stock bellow desighn you peak of. What year or engine do they come in? Good bellows are not cheap..so any help is good from the scrap yard.

[Guest]

Mine are off any x-over pipe from the 660, the specific one that I used on my truck was from an '88 2.8L Cavalier. All Factory Bellows use the internal slip joint design.

Any of the flex joints around here don't have the slip joint, I'm sure some other do, like you mention.

[Berettaspeed]

Well this is finished. I needed to do alittle more to get everything flush but it seems to fit and everything. hopefully this will work fine


here are some more from today.




welds are not the best. but.....im getting better



view of everything



the pipe clearence



see i got one from a junk yard for 5 bucks. im keeping my stock on incase i have to put everything back to N/A. I also made this with "easy to take apart and install" in mind.

[Guest]

Looks good, really good. I like the addition of the sprung ball type joint, allows flex in other directions.

Just curious as to what is supporting the turbo itself? Where is the support bracket attached to?

[Berettaspeed]

Thanks

one of the brackets is on the exhaust intake side. thats monted on the radiator support area. the other is on the bottom. you can see 2 angle iron peices welded together to make a square. that is not mopunted yet but it holds the weight for now. when im all done for sure i will weld it in place.

I used old alternator brackets i had lying around. 3/8" steel rods. they are black so its kinda hard to see.You can also see my horrible welds. i spot welded so i thinks thats why there is so much splater. but i ground everything down.(this is an older pic)
(you can also see i had the turbo on a bad angle, so i cut the exhaust intake pipe and rotated it a bit to get more room for the intake)

http://img.photobucket.com/albums/v729/Berettaspeed/Turbo%20Project/EX104.jpg

[Berettaspeed]

I have magic powers i can bring the dead back to life. LOL

but anyways. i basicly finished my project. nothing is clean and pretty just becasue i really don't care at this time. i just want it running and running well. only a few things need finishing. the rest of the exhaust, tuning, and then alot of cleanup.

right now im trying to tune it with my Additonal injector controler(034 EFI), so ill see how thats goes. im going to try and get everthing done by sunday this weekend if weather permits me to do so. my biggest worry is the stock turbo wastegate. i hope it can hold at 8psi or lower .a maximum of 10psi. i can't take anymore than that. but right now i just have the wastegate loose so i can see how much it will allow fully open. its not the best but it will determine if i need a external wastegate.

i have some pics of more work i did. its nothing too special but i hope it works. i have ran it already and it seems fine. i have not gauges at this time except a boost gauge. so it will not be a very good tune.it will run rich.


more at.... http://photobucket.com/albums/v729/Berettaspeed/

[Guest]

You won't need an external gate to lower the PSIG, all you need to do is modify the actuator, by getting or adapting a different actuator. I used one from a Sunbird. The opening pressure is 2 PSIG, then I used a modified Grainger valve to control the boost pressure.

Where did your turbo come from? Used? From what car?

[Mars]

Excellent work!

Let us know how the add. injectors works out. I am researching different ways to control my fuel right now, and could use the insight.

[Berettaspeed]

its from a GMC syclone.

i still need to get more sensors wideband being the most important. i know there is alot of junk in the bay, but the fuel rail is a bunch of rubber hoese. LOL right now i have 2 quad 4 injectors but i will get some 50lbs later.

the design of the fuel rail is real basic its like a big letter I LOL I

the controller web page is here..

http://www.034efi.com/product_info.php?cPath=22&products_id=71