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 Lower oil control ring		  Forum Locked  Topic Locked
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William Cullen

United Kingdom
229 Posts
Posted - 12/02/2009 :  19:38:45  Show Profile
Hi All


I have been told that it is common practice on MMM engines to leave off the piston the lower oil control ring as you get better oiling of the bores!is this true?

Any advice on this would be useful.

Thanks


Bill

Bob L

Sweden
50 Posts
Posted - 12/02/2009 :  22:50:28  Show Profile
I did that to my PA engine when I rebuilt it about 15 years ago. It probably uses a bit more oil but I get good lubrication.
Bob
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kimber

United Kingdom
1529 Posts
Posted - 13/02/2009 :  08:12:30  Show Profile
To avoid any possible confusion - Yes, assuming we are talking about 4 ring pistons with 2 oil rings, then the lower one can be omitted.
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