today i was measuring my specs for my 11:1 CP piston and cylinder... below are the measurements i got, i need to know if they are acceptable. the reason i ask is bcause the CP piston kit came with a paper that lists certain tolerances, and they differ from the service manual tolerances.i want to make sure i have a second opinion before i grind on a ring.
below are actual measurements
Cylinder:
0.004 out of round
I.D. 4.018(skirt sides)
4.014 (end of pin side)
Piston:
O.D. 4.014
top ring end gap: 0.016
2nd ring end gap: 0.012
cylinder to piston clearance is 0.004 at the biggest part.
below are the service manual specs:
cylinder:
I.D. (4.0157-4.0163)
out of round (0.004 max)
Piston:
O.D. (1.014-4.105)
top ring end gap( 0.010-0.014)
2nd ring end gap(0.016-0.022)
cylinder to piston clearance: 0.0004-0.0022
below are CP specs
these specs came on the paperwork with the piston.
top ring end gap: 0.020
2nd ring end gap: 0.024
cylinder I.D: 4.0157
cylinder to piston clearance: 0.0020
piston O.D. 4.0137
im making an excel cahrt now to get a better idea of what i need to do and i already know what needs to be tweeked but i want to have a second opinion.
below are actual measurements
Cylinder:
0.004 out of round
I.D. 4.018(skirt sides)
4.014 (end of pin side)
Piston:
O.D. 4.014
top ring end gap: 0.016
2nd ring end gap: 0.012
cylinder to piston clearance is 0.004 at the biggest part.
below are the service manual specs:
cylinder:
I.D. (4.0157-4.0163)
out of round (0.004 max)
Piston:
O.D. (1.014-4.105)
top ring end gap( 0.010-0.014)
2nd ring end gap(0.016-0.022)
cylinder to piston clearance: 0.0004-0.0022
below are CP specs
these specs came on the paperwork with the piston.
top ring end gap: 0.020
2nd ring end gap: 0.024
cylinder I.D: 4.0157
cylinder to piston clearance: 0.0020
piston O.D. 4.0137
im making an excel cahrt now to get a better idea of what i need to do and i already know what needs to be tweeked but i want to have a second opinion.