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aws aws is offline
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Join Date: Feb 2008
Location: Phoenix Arizona
Posts: 156
The 76.4 crank installed on the 3.0/3.2/3.3 case with 98mm cylinders (3.44 liters) is the biggest and best displacement for the early turbos. The longer stroke provides better torque for off boost performance and the 98mm cylinders can be Ni-resisted and are robust enough to withstand the higher cylinder pressures generated by high boost and big HP numbers. The 993 crank has a narrower rod bearing width and requires a custom rod because the stock rod is woefully inadequate. You will also need new pistons to go with that crank. This combination works well only if the revs are held to below 7500rpm. The crankshaft and rod bearing area is marginal for operation above that.
Old 12-08-2011, 07:06 PM
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