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Discussion Starter · #1 ·
that are exceptiable clearances???
my pistons are je 83mm(3.268")
my cylinder diamater is 3.287"(83.489mm)
the cylinder wall varies by 1 onethousand of and inch measuring in about 6 diffrent places....
so that leaves about 10.5 thousandths of and inch on any side of the piston....is this exceptiable???
i havent measured the piston in multiple places yet,but what im trying to do is re-ring a motor and hoping that these specs are gonna be exceptiable....i still need to hoan out the cylinder so i would expect that the diamater of the cylinder would increase by 1 or 2 thousandths....yes?
 

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Re: piston to cylinder wall tolerances??? (seako_916)

.0035 is the clearance you would look for with JE's on a turbo car not sure with N/A.Measure your psiton a half inch from the bottom of the skirt and measure your ring gaps about 1 inch into the bore.
 

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Re: piston to cylinder wall tolerances??? (Bad Habit)

so the diffrence in the piston diamater and cylinder diamater should be .0035"????ill measure the piston right now
oh and it is a turbo motor.......
 

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Discussion Starter · #4 ·
Re: piston to cylinder wall tolerances??? (seako_916)

piston diamater is 3.283"....and bore was 3.287....is .005 gonna be acceptiable?
i just measures the piston .5" from the bottom of the skirt....
and i got the bore measurement from about 1 inch into the bore http://****************.com/smile/emthup.gif
thanks
 
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