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Forced Induction
Aftermarket superchargers & turbos as well as tuning for stock BMW turbos (N54 motor - 135i / 335i / 535i). Force-fed discussion to make your car go faster

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  #1  
Old 08-26-2006, 05:38 AM
AW328i AW328i is offline
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Compression ?'s for turbo'd engines.

I have some questions that some of you might be able to answer. If your running only a half bar of boost (7.5 psi) you don't need to lower compression in your engine right? But if you raise it above this level will you have to put new pistons and stuff in or what do you need to do to run a full bar of boost on an engine?
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Old 08-29-2006, 08:55 AM
IanBMW IanBMW is offline
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Mein Auto: 1998 528i, 1988 327i
All depends on the engine. Tell us what you want, and what your working with.....and we can tell you if it will work. Generally you're correct, but then again i say GENERALLY.
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Old 08-29-2006, 11:10 AM
AW328i AW328i is offline
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What I want to know is what do you need to do to your engine in order to handle high boost!! (8-20 or more psi) And is it possible to do a twin turbo (1small/1large) on the 2.8 E36?
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Old 08-29-2006, 08:43 PM
IanBMW IanBMW is offline
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Mein Auto: 1998 528i, 1988 327i
Honestly the benifit of TT will not be there for that engine. You need to go buy the book Maximum Boost by Corky Bell. He explains off of it, what you ask is WAY too simplified. So i'll make it simple, it will cost money......anywhere from $5-20k. EOD
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Old 08-30-2006, 12:35 PM
AW328i AW328i is offline
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Thanx, will check out the book.
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