Piston ring orientation
- Thread starter fuzzbee1
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- orientation piston ring
I suspect the recess has something to do with reducing carbon build up behind the ring in the ring land, locking it out against the cylinder.
I agree with Joe on its orientation. If you were to install it recess down there would be less contact area between the ring & bottom side of the land when under pressure. Those that do them for a living may have more info.
I agree with Joe on its orientation. If you were to install it recess down there would be less contact area between the ring & bottom side of the land when under pressure. Those that do them for a living may have more info.
Joined Mar 2003
582 Posts | 2+
Waterbury, Connecticut, USA
Hey hey, another fellow 350 owner!!!
If, by recessed, you mean chamfered, and I believe you might, then I recall it going on the bottom side. Regardless, there (should) be a mark on either side of the ring, like a little dot, that should indicate the top, and it should be located near the split. And remember, when assembling to offset the rings 180 degrees, and make sure the "split" is oriented towards the crank ends, not towards the "tires".
I am assuming that the whole operation is quite cajun'd (like a catfish in new orleans!), so it might not be possible to make out the mark on the top of the ring... A good cleaner should make this mark viewable, regardless.
What I said may contradict what the other stated, but I seem to remember it being that way. But, I definately remember there being a mark for "top" (of course, I should say I can't remember what I had for lunch...)
If, by recessed, you mean chamfered, and I believe you might, then I recall it going on the bottom side. Regardless, there (should) be a mark on either side of the ring, like a little dot, that should indicate the top, and it should be located near the split. And remember, when assembling to offset the rings 180 degrees, and make sure the "split" is oriented towards the crank ends, not towards the "tires".
I am assuming that the whole operation is quite cajun'd (like a catfish in new orleans!), so it might not be possible to make out the mark on the top of the ring... A good cleaner should make this mark viewable, regardless.
What I said may contradict what the other stated, but I seem to remember it being that way. But, I definately remember there being a mark for "top" (of course, I should say I can't remember what I had for lunch...)
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