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Author Topic: took off my head,had a broken piston ring  (Read 593 times)

slickster

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took off my head,had a broken piston ring
« on: July 20, 2012, 10:51:15 AM »
  I was doing the head removal for the valve seat job, on the 84 r65. I noticed my top ring on the piston was broken.  Should I just pop on a new one?
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Offline montmil

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Re: took off my head,had a broken piston ring
« Reply #1 on: July 20, 2012, 01:52:27 PM »
Probably have to buy the set. Your '84 has nikasil cylinders so there should not be an overbore question.  Check the cylinder bore for any ugly scratches and if it's looking OK, consider yourself golden.
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Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
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Offline nhmaf

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Re: took off my head,had a broken piston ring
« Reply #2 on: July 20, 2012, 09:18:53 PM »
+1 - hope that you don't have scratches in the bore from broken ring.   IF not, then put on a new set - I don't think they come separately either, and don't use a "used" one from another engine.
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Airhead #12178 ? BMWMOA #123173 ?BMWRA #33525 ?GSBMWR #563 ?1982 BMW R65LS ?1978 BMW R100/7 1998 Kawasaki Concours

Offline Barry

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Re: took off my head,had a broken piston ring
« Reply #3 on: July 21, 2012, 03:52:53 PM »
As far as I can see rings only come as a set although at one time they were available separately.


Just out of interest were there any running symptoms, low compression reading or increased oil consumption caused by the broken ring ?
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Barry Cheshire, England 79 R45
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