Modérateur: Relmax62
Before selecting a piston, the desired compression height must be known. As shown, compression height is the distance between the centerline of the pin bore and the top of the piston. To determine the compression, three things about the engine must first be known: block height, connecting rod length and crankshaft stroke length.
How Compression Height Is Calculated:
Compression height = block height - rod length - (0.5 X stroke)
Example: block height = 11.685"
rod length = 7.500"
stroke = 5.500"
Compression height = block height - rod length - (0.5 X stroke)
Compression height = 11.685 - 7.500 - (0.5 X 5.500)
Compression height = 1.435"
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