Oil ring gap too large?
Thread Starter
Instructor
Joined: Jul 2016
Posts: 195
Likes: 37
From: Poway CA
Oil ring gap too large?
Rebuilding L-36 bore .060 over and checking all ring gaps. The first and second compressions rings are all good but I'm seeing .037-.039 on the oil rings. These are new Hastings rings. Recommended in the rebuild book I have is .020 – .030 and the paper from Hastings only says the minimum gap is .015. Did they put in the wrong oil control rings or has something changed over the years? (Rings are square in the bore, down about 1.5 to 2 inches and I've checked the machining with a dial bore gauge.)
Thanks for any comments you guys can provide.
Thanks for any comments you guys can provide.
Thread Starter
Instructor
Joined: Jul 2016
Posts: 195
Likes: 37
From: Poway CA
Stormin' Norman appears to agree with others that say about .060 is about as far as these rings should go. I appreciate your input. I thought it odd that the ring manufacturers only mention the minimum gap and don't even bother with the max they can go.
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From: Sunshine Coast, Queensland, Australia
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I rebuild engines every day. it's my job, 6 days a week. for 50 years. I'd run them. No problem.
