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It has been a few years sinse I built an engine. a lot of the kits i see now have file fit piston rings. How do you file fit the rings or would it be better to get the mech. shop to fit them for me and pay them???

thanks Rick
 

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If they charge like $20 to do it, i say let them do it. What you do is put a vice on a bench, and mount a good file in it facing out. You put the ring in the cylinder, push it all the way down to the bottom of the stroke (use a piston so that its not crooked). Then use a feeler gauge to measure the gap. Then you pull it back out, file it down, and repeat till its right. Multiply this by 16 rings. It sucks. It sucks more if you break a ring (ask me how i know). It may even be worth $50 or $60 to you.. all depending on YOU.
 

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FYI...most of the rings today that come with pistons are very, very close enough for a street engine without being touched.
 
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