piston compression height
05-28-2007, 07:59 PM
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No problem, here is the formula in case anyone else needs it, or searches it in the future.
9.025 - block height
1.740 - 3.480 divided by 2
5.7 - rod length
0.17 - deck clearance
9.025 - 1.740 - 5.700 - .017 = Compression Height of 1.568.
9.025 - block height
1.740 - 3.480 divided by 2
5.7 - rod length
0.17 - deck clearance
9.025 - 1.740 - 5.700 - .017 = Compression Height of 1.568.
Last edited by siniSSter; 05-28-2007 at 10:58 PM.
05-29-2007, 02:06 AM
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Originally Posted by siniSSter
No problem, here is the formula in case anyone else needs it, or searches it in the future.
9.025 - block height
1.740 - 3.480 divided by 2
5.7 - rod length
0.17 - deck clearance
9.025 - 1.740 - 5.700 - .017 = Compression Height of 1.568.
9.025 - block height
1.740 - 3.480 divided by 2
5.7 - rod length
0.17 - deck clearance
9.025 - 1.740 - 5.700 - .017 = Compression Height of 1.568.
05-29-2007, 03:30 AM
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That is the formula to calculate a desired compression height.
The actual stock Mahle LT1 piston part number 027520 has a compression height of 1.559"
That gives you .026" in the hole.
That is:
9.025 - (5.70 - 1.559 - 1.740) = .026"
But an aftermarket 5.7" rod 3.48" stroke SBC piston usually comes with a 1.560" compression height, (for zero deck height on a 9.000" decked block).
Karl
The actual stock Mahle LT1 piston part number 027520 has a compression height of 1.559"
That gives you .026" in the hole.
That is:
9.025 - (5.70 - 1.559 - 1.740) = .026"
But an aftermarket 5.7" rod 3.48" stroke SBC piston usually comes with a 1.560" compression height, (for zero deck height on a 9.000" decked block).
Karl
