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Old 10-25-2012, 12:01 AM   #23
oem
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Member#: 330
Join Date: Sep 1999
Location: Ca
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Quote:
Originally Posted by Crystal_Imprezav

.001 distortion x pi = .003" ring gap change.
.0015 distortion x pi = .0047" ring gap change.
.002" distortion x pi = .0063" ring gap change.

From JE's installation guide: "A diameter variance from one cylinder to the next changes the end gap of the rings
in that cylinder by a factor of pi (3.1416). For example, a cylinder .001” larger in diameter will increase the ring end gap by .001 x 3.1416 = .003”,
rounding off, which could increase cylinder leakage in that cylinder and decrease performance"

Your math is off. A distorted circle is an oval. The largest diameter from an oval x pi /= circumference. You must also factor in the smallest diameter.

So .001 distortion x pi /= .003" gap change.....0015 x pi /= .0047"...ect

JE is referring to undistorted cylinders with different diameters, so their quote is correct but does not support your calculations.
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