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copbait73 copbait73 is offline
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Join Date: Nov 2003
Location: Chesterfield IN
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Originally Posted by beepbeep View Post
You are turbocharging a stock 3.6 N/A? go for 993tt pistons and H-beam rods. They fit the bill perfectly and I watched such engine produce way over 800hp.

Machining stock 11.3 (well I believe *real* C/R is more like 10:1) piston might leave the piston crown too thin and lead to crackning.

JE pistons are good too but aren't as metalurgically advanced so you'll have some piston slap when engine is cold. Not too dangerous but annoying.

As far as I remember, 993 engines with "dished" heads were produced for a year or too, and pistons were the same but jugs were shorter and heads were deeper.

A set of used re-ringed 993tt is probably the cheapest and best ticket here. They are made of tweaked alloy and will be quiet at startup. They are also tough as nails. Only problem with them is that they are somewhat don't rev past 7000RPM (In turbocharged engine, this is usually not the problem as they tend to produce max power fairly low unless tuned to max).
Goran, 930GT, Mike, glad to see you in this discussion. My 3.6N.A. (TT) will hit the street (planned this summer) with stock high compression then come down over the winter for C.R. reduction and or setup for E85. I really don't want much more than 400HP because it's in an RS flared '73, weight reduced to roughly 2000#. However, I want RPMs and would like a usable 7000RPM range and your reminder of component weight is a good one.
I'll watch out for 3.6TT parts.
Old 03-03-2008, 05:56 AM
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