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Registered
Join Date: Apr 2003
Location: Terre Haute, IN
Posts: 2,949
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How much does a P crank weigh? And yes, I know it obviously depends on the size, but any weight to size reference would be on interest. Don't forget, its the 930 engine that is equal to a stock SBC. You must use aftermarket Al parts to get near the 911 engine's weight. The amazing thing is that a BOP/Rover weighs in at a little more than 315lbs!
LS1 engines (Corvette for the Chevy ignorant) ready to run aren't that much lighter than a simple Al headed SBC either. Remember that although Al may only weigh 1/3 of iron (roughly, you engineers) it requires more of it to gain rigidity. Rigidity is important in holding the crank still. Chevy's still have less main journals to do this though.
Luke
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Luke S.
72 RS spirit 2.7mfi, 73 3.2 Hotrod on steelies, 76 993 3.3efi TT, 86 trackrat, 91 C4s widebody,02 OLA winning 6GT2, 07 997TT, 72 914 v8,03 900 rwhp 996TT
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