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The Terminator
Engine/Tuning
Looking for opinions on piston ring gap
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<blockquote data-quote="MalcolmV8" data-source="post: 16843514" data-attributes="member: 8854"><p>I did not try different cylinder finishes with the gapless rings. They were seated and sealing very well as are yours. I actually got 0% on my leak down tests which is mind blowing. I'd never seen anything like it. However I don't believe the 2nd set of rings (mostly for oil control) were doing much of anything. Just a theory. Total Seal initially said it was my heads but after pulling them twice and having everything redone at the machine shops I'm just not buying it. The story kept evolving, then it was my crank case pressure, my oil level in the pan etc. etc. I gave up and moved on.</p><p></p><p>To quote myself from 7 tears ago "Since day 1 of firing up this motor it's burnt oil, lots of it. I'm talking about 1 quart every 250 miles or so. Piston tops are black, exhaust looks like diesel soot, O2 sensors get trashed to non working in about 800 miles, plugs look oily, wet on threads"</p><p></p><p>who's got time for that? lol.</p><p></p><p>Standard ring gaps are not an issue. Spend the time to be overly specific on filing them and ensuring the ring gaps are parallel. Extremely parallel and accurate, measure with a feeler gauge. I'm super particular about that. I use the Total Seal power ring filer that accounts for the curve of the ring and it takes me about 8 hours to do all the rings because I'm super specific about. </p><p>The result is no blow by, my catch cans get nothing by moisture in them.</p><p></p><p>Best of luck, those pics look similar.</p><p></p><p>Malcolm</p></blockquote><p></p>
[QUOTE="MalcolmV8, post: 16843514, member: 8854"] I did not try different cylinder finishes with the gapless rings. They were seated and sealing very well as are yours. I actually got 0% on my leak down tests which is mind blowing. I'd never seen anything like it. However I don't believe the 2nd set of rings (mostly for oil control) were doing much of anything. Just a theory. Total Seal initially said it was my heads but after pulling them twice and having everything redone at the machine shops I'm just not buying it. The story kept evolving, then it was my crank case pressure, my oil level in the pan etc. etc. I gave up and moved on. To quote myself from 7 tears ago "Since day 1 of firing up this motor it's burnt oil, lots of it. I'm talking about 1 quart every 250 miles or so. Piston tops are black, exhaust looks like diesel soot, O2 sensors get trashed to non working in about 800 miles, plugs look oily, wet on threads" who's got time for that? lol. Standard ring gaps are not an issue. Spend the time to be overly specific on filing them and ensuring the ring gaps are parallel. Extremely parallel and accurate, measure with a feeler gauge. I'm super particular about that. I use the Total Seal power ring filer that accounts for the curve of the ring and it takes me about 8 hours to do all the rings because I'm super specific about. The result is no blow by, my catch cans get nothing by moisture in them. Best of luck, those pics look similar. Malcolm [/QUOTE]
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Looking for opinions on piston ring gap
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