Top compession ringland tolerance
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Logistics Pro
Joined: Oct 2005
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From: Mddl A MexCans
Top compession ringland tolerance
I read back and forth 4 times to make sure I wasn't overlooking it and I cannot find a tolerance listed for this. The book says using a old ring is more difficult needing to mic the ring the use feeler gauges to see the play.. but no mention of acceptable tolerance.. anyone have a number for this? I cant imagine that 5/64 for gap and ring is the end all..I find most of mine are coming up about .08 - .08125 and see no stepping in the groove.. TIA Redman
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Joined: Jan 2003
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From: Iowa
I could have swore I saw it in there at some time... Anyway, I think you mean the ring side clearance. I wouldn't go above about .010". I assume you meant .0080" and .0081". You dont want 'em too tight either. Getting a micrometer to read to the millionth of an inch would be an amazing feat! 
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From: Mddl A MexCans
.078125 is 5/64" the gap in my top lands is pretty even around .08125 read using feeler gauge (.030-.032.-.020) together, just a tid of slack with those in the groove..I'm not reading with the ring in as all I have are the old ones. So .08125+-.00125 - .078125 = .003125 I think I'm ok
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