Weird info on piston rings.

Carl H

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Yes I´ve seen that, I find it pretty strange that neither RGM or AN can supply ring sets with the 3-piece oil ring. I also sent a question to "britbikesuk" on sunday but haven´t even got an answer.... So I guess I have to order rings from the US, which to me also is pretty strange.....
I also have OEM some sets of Norton rings in some sizes, I know the 750 sets are with the narrow oil ring , like use in Power Max pistons and the early 750s . I think they have chrome top rings in most of the sets. I think most of the sets are 10 and 30 over, If I remember correctly. I will have to look if anyone is interested.. Carl H
 

Fast Eddie

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Good info TW.

And, as I‘ve said already, there is absolutely NOTHING wrong with that design of oil ring in my experience. I’ve used dozens that have performed perfectly.

However, I’ve also used some that didn’t, and caused bad oil burning.

Hence my earlier point, it’s better to spend effort ensuring you buy quality parts from a reputable manufacturer than to search out a particular design.
 

Time Warp

.......back to the 70's.
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I don't think there is a choice now based on the "Hepolite ring package (Triumph)

I would admit they are a firm fit (the two piece scraper) but there seemed to be no excessive drag or bore marking.

JC had a post somewhere but might have been some time ago on that oil ring (type) but could not find it, he might have done some in the garage/shed on the bench tests regarding with and without the expander and friction to the cylinder wall.

If there is no smoke or hot running its all good.
 

Carl H

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The UK two piece oil ring looks similar to the USA made "generic" rings packaged by Cycle Craft for Triumph T140 750cc. They are made by Grant USA. and cost a little less than Hastings .

But the Cycle Craft/ Grant rings are the 3 piece oil ring for Nortons.

It seems to me they are asking a ton of dough for the UK rings. I don't think there is a better lower price ring than the Hasting with the Flex vent oil ring, But I have sold the Cycle Craft/Grant ones and heard no complaints.

I can get all sizes of either, last I knew.
 

Carl H

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