TISCO bevelled piston rings

Dbourg · May 22, 2019

This message is a reply to an archived post by Garrett Carlsen on July 03, 2013 at 12:24:35.
The original subject was "Re: TISCO bevelled piston rings".

Hey, I have a question, my tractor is a farmal super av and I bought new piston rings. I'm not home right now to look and see the name brand of the rings, but I always put rings with dot or letter pointing up on auto's, there are three rings for these piston's, and the package is marked ( this end in ), I guess meaning down for all. The top ring has the dot up which I know is right, but the second ring is the problem! There is a bevel on the inside which I know going down as the package shows, BUT there is a dot on it too on the same side as the bevel which should be down. So if I put dot up, then is it wrong?

Bob · May 22, 2019

(quoted from post at 10:22:31 05/22/19) This message is a reply to an archived post by Garrett Carlsen on July 03, 2013 at 12:24:35.
The original subject was "Re: TISCO bevelled piston rings".

Hey, I have a question, my tractor is a farmal super av and I bought new piston rings. I'm not home right now to look and see the name brand of the rings, but I always put rings with dot or letter pointing up on auto's, there are three rings for these piston's, and the package is marked ( this end in ), I guess meaning down for all. The top ring has the dot up which I know is right, but the second ring is the problem! There is a bevel on the inside which I know going down as the package shows, BUT there is a dot on it too on the same side as the bevel which should be down. So if I put dot up, then is it wrong?

If the second ring is just a simple, standard ring, (most likely it is) the inside bevel goes "UP"/towards the piston top.

If a more exotic/less common "bevel face" or "torsional" ring with "inside bottom bevel, the inside bevel goes "DOWN".

Carl H · Jun 1, 2019

I had a similar problem with Hasting rings for a Norton motorcycle, I called them and was told on old vehicles and air compressors the inner bevel is usually not what determines the top of the ring. It is the dot they put on them and the dot may contradict the diagram that shows the bevel location. I was told to use the dot for the top. I had a very hard time to see the dots and had to use a magnifying glass and good lighting to see them. But I have the feeling that the top ring is the most critical to put in properly.

TISCO bevelled piston rings

Dbourg

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Bob

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Carl H

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