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Post by edju1958 on Jul 12, 2021 22:19:24 GMT -5
This is a general question for cleaning up a piston with transfer on it & very light scoring.Does it matter which direction I'd sand the piston,up & down,or around the piston?Logic would dictate that it should be up & down,but do correct me if I'm wrong.
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Post by blythkd on Jul 12, 2021 23:12:58 GMT -5
I haven't done much of it but when I have I always go around the piston since that's the direction of the original mill marks on some pistons. Probably won't make a lot of difference one way or the other if you get it smooth.
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Post by edju1958 on Jul 13, 2021 19:05:14 GMT -5
The piston cleaned up very well.I used emery cloth on it,I didn't plan on using sandpaper at all.
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Post by blythkd on Jul 13, 2021 21:11:41 GMT -5
That oughta work
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Post by drater on Aug 12, 2021 18:15:18 GMT -5
Is this the one that now has 0 compression? 'cause the ring locating pins are in the proper orientation in the pic.
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Post by edju1958 on Aug 12, 2021 18:57:08 GMT -5
Yup,that's the one alright!
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Post by drater on Aug 13, 2021 17:14:27 GMT -5
Are the pictured rings new? Something doesn't look quite right there.
What is the ring end gap and piston to cylinder wall clearance?
Faulty compression tester been ruled out?
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Post by edju1958 on Aug 13, 2021 18:00:35 GMT -5
The rings are brand new.The compression tester is correct on other readings I've had on other saws.I have no idea what the ring end gap is & the piston to cylinder wall clearance is fairly tight.Keep in mind thios is a used piston that I cleaned up.I'll be doing a pressure test on the crankcase & let you know the results.
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