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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
The 3.0 motor has some advantages. It has stronger rods, shorter stroke for higher rpm potentsl, fined cylinder for better cooling, larger exhaust ports, and lower compression so it can take more boost.

As you said you goal is a fire breathing track motor you could build it to make HP up into the 7200rpm or more. If so you will want a cam different than the usually suspects.

With 6.5/1 compression and the smaller chamber it can run to 1.2 bar boost where the stock 930 runs at 1 bar.

I am a believer that a well built 3.0 can make life miserable for a stock rod 3.3 930 motor and be a lot of fun. 400hp might be on the low side of potential.

Just a fue things to think about.

On the other hand, if I had a stock looking 77 turbo, I might build a 3.5 low boost motor with a lot of TQ and abou 350hp so I could keep the stock look.
Old 07-10-2010, 03:35 PM
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