Major engine work - 1st short OCI recommended?

[BuickGN]

I've never really thought about it but I wonder if the large cold cylinder to piston clearances of the GN make it easier for the rings to move.... when cold. With the gapless rings it has now, it's really a non issue.

 

[StevieC]

Originally Posted By: BuickGN
I've never really thought about it but I wonder if the large cold cylinder to piston clearances of the GN make it easier for the rings to move.... when cold. With the gapless rings it has now, it's really a non issue.
That's interesting...

 

[Chris142]

Originally Posted By: BuickGN

What manufacturer pins the rings?
2-Stroke engines use pinned rings. W/O pins the rings will walk into a port and stop the whole works.

 

[hounddog]

Bet if you install a pistion/rings all lined up they will come out that way.If otherwise there would be no instructions to a proper stagger.

 

[demarpaint]

Originally Posted By: hounddog
Bet if you install a pistion/rings all lined up they will come out that way.If otherwise there would be no instructions to a proper stagger.


I always staggered piston rings. The last thing you want is an oil burning, plug fouling engine after a rebuild.