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djdawson2 djdawson2 is offline
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Join Date: May 2009
Location: Evergreen, CO
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Originally Posted by 930gt-40r View Post
What would you think of a 4094 with maybe a 1.06 A/R turbine housing on an efi 930? I am in the process of trying to get one from a friend and plan on running no more than 16-17 psi (likely 16 psi) and using 1 3/4 primaries. My objective is to keep the heat out of the cylinders since I am only using pump gas.
You've opened up more than one topic...

First, the 4094. Yes, you could use that turbo. What you would end up with is a fairly "high strung" build. Probably very little power below 4000 rpm. On top, you'd be able (efi) to expect 600+ whp properly tuned.

Second... Heat in the cylinders is related to total output, unless you are speaking specifically to heat problems associated with running too small of a turbine section. These are the sorts of issues you run into running an oversized compressor wheel... like your handle implies... a 30 hot side with a 40 compressor. This can be problematic when the ratio between exhaust manifold pressure and intake pressure is too high. The 4094 certainly wouldn't be at risk in this area.

Me... I wouldn't dream of using a 4094 on a 3.3 liter engine unless my goal was drag racing or all out top speed. I think you would find it quite annoying in everyday driving unless you raised your compression and dropped your boost.
Old 02-03-2010, 11:10 AM
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