Piston clearance .0035-.005 to bore ?


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Posted by Chris Case [108.247.150.16] on Saturday, March 07, 2015 at 12:04:29 :

In Reply to: Picture of #6 Piston & Rings posted by Willy-N [72.171.192.122] on Friday, March 06, 2015 at 22:13:01 :

Best way to check is with a feeler gauge and a spring scale, check you hard you have to pull. My book says .002 feeler, 7-14# pull.

The .040 is nominal, machinists bore/hone each hole to suit it's piston. A set might be vary by .010.

Have you pulled another piston? #6 goes bad often, and may have been replaced with a used POS.

And ring ends should be staggered around the piston, not all lined up.

But it looks like that motor was rebuilt in the days of real jack-leg shops.



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