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Author Topic: cms piston rings  (Read 684 times)

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Offline D DIAMOND

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cms piston rings
« on: November 17, 2018, 03:17:39 AM »
has anyone used cms pistons and rings from silvers or CMSNL on a cb750 if so which is the top ring there is the black one and a lighter colour one thanks DD
« Last Edit: November 17, 2018, 03:42:44 AM by D DIAMOND »
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Offline Bodi

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Re: cms piston rings
« Reply #1 on: November 17, 2018, 06:02:26 AM »
It may be hard to see, but the top ring outer face will be dead square to the bore, to sit flat against it. The second ring will have a tapered outer face... installed so it scrapes oil down the bore towards the crankshaft.
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Offline Remcod

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Re: cms piston rings
« Reply #2 on: November 17, 2018, 06:37:05 AM »
Chromed ring in top groove, black stepped ring in second groove ALL markings facing upwards
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Offline D DIAMOND

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Re: cms piston rings
« Reply #3 on: November 17, 2018, 07:48:24 AM »
thanks for the reply I was confused with the black rings being on top when unpacked thought they were packed in order of fitting as the oil rings were at the bottom of the package  thanks once again DD
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