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Old 10-24-2014, 02:28 AM   #1
chasbmw OP
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How to tell what rings you have........

Is there any way to tell apart rings suitable for Nikilisil cylinders from rings suitable for linered cylinders?
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Old 10-24-2014, 03:53 PM   #2
One Less Harley
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Quote:
Originally Posted by danedg View Post
AFAIK there are not Nikasil vs Iron rings.
As long as your rings fit the cylinders and pistons correctly they should work in either.
Rings will last longer in Nikasil jugs.
If they are new jugs, you should consider new rings.
If the rings have 50,000 miles on 'em, you might replace 'em.
NOT true, different rings!!!!
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Old 10-24-2014, 05:47 PM   #3
Big Bamboo
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Nykasil: ......................and NON-Nykasil:
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Old 10-24-2014, 07:17 PM   #4
bmwrench
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As Big Bamboo's picture shows, they are different. The top ring for an iron-bore cylinder is chrome-plated steel. Chrome will rapidly destroy Nikasil, which distributes itself on the piston, destroying it, too. The second ring is identical, and I suspect the oil ring could be used interchangeably.
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Old 10-25-2014, 04:02 AM   #5
chasbmw OP
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Many thanks for the help guys, it looks as if I have the correct rings for my cylinders. (Top ring chromed for non nikilsil)
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