Greetings . . .

Full floating wrist pins aren't a performance mod - they are a counter measure to prevent wear under high performance conditions (loading/RPM).

An engine with a very long stroke doesn't really need full floating pins because most of the bearing surfaces get worked due to the of size of the arc the big-end of the rod is traversing.

Compare that with an engine that has a very short stroke - now the arc traveled is so narrow that only a part of the bearing surface gets worked over and over again.

Take for example a Formula One engine (minimum stroke is 1.56"). Tach that baby to 20 thousand down the straight away . . .there's an application that requires floating wrist pins . . .

regards,
stock49

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