The 2.7 liter case does work for the 86.7 P/C. It is made for 90mm P/C's. no?
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The 2.7 liter case does work for the 86.7 P/C. It is made for 90mm P/C's. no?
Wasn't there a 89X66x6 = 2463.58 (2.5) engine? I'm guessing when this thread refers to short stroke, that is what they are referring to.
Yes, but that’s for the type 911/73 short-stroke 2.5l racing engine.Quote:
Originally Posted by Chris Pomares
The reason Porsche went to 89X66 crank is because the 86.7X70.4 crank made the fly bolts come loose. But this a racing environment. This is spelled out in Paul Frere's book PORSCHE 911 STORY. page 143. this problem never came up with 66mm cranks