T2 S4 stock Turbo & manifold mod questions
#1
Junior Member
Thread Starter
T2 S4 stock Turbo & manifold mod questions
Ive heard of people removing the flapper from the manifold however I cannot find a write up about it. Im also looking for any other ideas as to what i can do to the stock set up(other than porting the waisegate hole) that would be benificial before i prepair to bold the set up on the engine. Thanks for any help
#2
hey
i plan on using a 89-91 turbo housing. It has a much more efficent wastegate. you basically use the internals of your turbo. So you can buy a bad 89-91 turbo and just use your internals. I think you also need the coolant and oil lines from the 89-91 turbo. The s5 turbo also is made of better material and is less prone to cracking. You can then mod all you want and won't have to worry about fuel cut as much. I've been planning on doing this for a couple of weeks. Just getting all the parts toghether. I'm curious to hear from other people about this mod.
#4
Rotary Enthusiast
iTrader: (31)
Ive heard of people removing the flapper from the manifold however I cannot find a write up about it. Im also looking for any other ideas as to what i can do to the stock set up(other than porting the waisegate hole) that would be benificial before i prepair to bold the set up on the engine. Thanks for any help
For the wastegate, also there's a thread, about using a honda or a Ford F150 exhaust valve welded on the stock wastegate after it was milled out.
Also search for BNR turbos,they build very nice modded stock turbos
Good luck
Last edited by HAI-TEK7; 06-15-07 at 06:49 PM.
#7
A local guy around here who has a wonderful rx7 recommended this mod for me. I just want depandablity with a little more power. I'm still trying to research this mod. LOt's of planning can go a long way. To my understanding the s5 turbo had a much better wastegate. It will help getting boost creep under control. He also recomending a boost controler and fuel cut defender. Heck if you have your turbo out and your gonna port the wastegate just go a little further and have a better setup. Am I missing something here? I am new to turbo setups and I'm trying to learn as much as I can. Thought it might give idea's to this guy with moding his turbo.
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