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Join Date: Jun 2009
Posts: 745
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How important are matching wrist pins to pistons?
Hi guys
How important are matching wrist pins to pistons on a 3.3 the machine shop might have mixed them up. From your experience all wrist pins measure the same? Thanks Erick |
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11-26-2014, 05:26 PM
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abit off center
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They should all be the same but I like to match them by weight, mix and match pins and pistons to get each set close to the others.
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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11-26-2014, 06:35 PM
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Join Date: May 2003
Posts: 3,346
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Not important at all.
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72 Carrera RS replica, Spec 911 racer |
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11-27-2014, 08:49 PM
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Join Date: Jan 2004
Location: CT
Posts: 11,538
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Wrist pins vary by less than 1 gram pin to pin
Pistons vary by several grams piston to piston within a set |
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11-28-2014, 11:49 AM
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Thanks guys
From your experience all pins are the same diameter? Thanks |
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11-28-2014, 12:02 PM
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Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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That's what they are telling you. Same diameter. Which is why you can use their small weight differences (or shave off a bit of weight from one) to help fine tune piston overall balance.
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11-28-2014, 10:11 PM
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1969 and 1986 Porsche Targa and Coupe 1720cc and 3
