Posted by Bruce in BC [24.207.103.200] on Sunday, December 08, 2013 at 23:58:24 :
In Reply to: Re: Piston/rings - what might I look for? posted by Marty [24.86.3.25] on Sunday, December 08, 2013 at 23:36:26 :
Pull off the rings , turn the piston upside down and stick it in the cylinder . Slide it in until the skirt is about 5/16 below the top of the block . Now see how thick a leaf feeler guage you can get between the piston and the cylinder wall . Do not force it but it should take about 5lbs of force to pull the feeler guage out . Now you have a rough idea of your clearance.
You can do the same at the bottom of the bore with the piston facing the normal way . Just do the measurement from the bottom of the block . The difference in the top and bottom number will equal the taper.
If you are good, the measurement can be quite accurate.
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