piston- bore measure
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
measure the piston as per the manufactures specs for measuring it, usually half way down the skirt works if you don't know for sure. Measure the bore with a set of bore gauges or inside micrometer. subtract piston diameter from bore diameter.
Hotshot
Joined: Dec 2003
Posts: 18,423
Likes: 9
From: iowa
piston to bore clearence is determined by piston type (forged, hyper, cast) bore diameter, and intended application.
example KB hypers for street driving on a 4.360 bore would be .0020-.0025, the JE forged pistons I run at 4.420 bore for drag racing only, recommend .0050-.006
example KB hypers for street driving on a 4.360 bore would be .0020-.0025, the JE forged pistons I run at 4.420 bore for drag racing only, recommend .0050-.006
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