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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
The info I had was from there web site but I could be wrong.

However, I believe my it is a spot on match to a GT 35. On the compressor I understand the most important wheel dimension is the inducer, on the turbine it is the exducer. Thus, that is the turbine exducer measurement.

Also important is the ratio of the compressor inducer to the turbine exducer. I suspect the greater multiple of the turbine is to the compressor (turbine being larger), the faster the boost response might be provided you have the exhaust volume to drive it and a smaller A/R is just a way to fine tune.

To me putting a large compressor with a small turbine wheel throws the ratio way out of whack and is like starting out in second gear. Sure you hit 35mph or such at lower rpm but it takes longer to get there, if you can follow my thought.

Again, I am still learning and this is just what I belive to date.
Old 07-11-2010, 01:52 PM
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