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To: eastexsteve
Scroll down and read the FAQ on honing;


40 posted on 01/19/2022 1:26:06 PM PST by dynoman (Objectivity is the essence of intelligence. - Marilyn vos Savant)
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To: dynoman

Measuring ring gap, especially in a bored out cylinder, is one of the key skills to know in rebuilding a motor. Gapless rings are relatively new.

Rings will move around on the piston due to a number of factors, but that is NOT the primary purpose of the honing.


54 posted on 01/19/2022 4:29:22 PM PST by Dead Corpse (A Psalm in napalm...)
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To: dynoman
Scroll down and read the FAQ on honing;

All true, but it doesn't say that properly honing the cylinder makes the rings spin around the piston.

However, I wonder how those "gapless" rings manage to form a good compression or oil seal. To work properly, a regular piston ring has to constantly exert a certain amount of tension against the cylinder wall. They are built slightly larger than the cylinder bore, and are "compressed" into the cylinder leaving a gap - so you can measure how much tension is left to hold it tight against the cylinder wall after it wears. If it is a solid ring, it will begin to leak and pass oil/gasses once it breaks in the cylinder wall and has even the slightest amount of clearance.

64 posted on 01/20/2022 5:55:37 AM PST by eastexsteve
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