Re: First time replacing piston rings

Papa _ /
This single post is part of a larger thread. Start from the top or view this post in context.

I doubt that .008mm discrepancy is causing your lack of compression.

The gap allows the rings to expand when hot w/o closing the gap completely and swelling out against the cylinder too tight. Compression should still be good when cold and best at operating temp when the ring ends touch (ever so delicately) at the gap and make a near perfect seal.

If the new rings are installed and compression still sucks, I’d look real hard at the head to cylinder seal and try your compression tester on a known good engine to see if it’s giving accurate pressure measurements. Maybe it’s messed up and your compression is fine? And the engine has a totally different reason for not starting. Weirder things have happened.

This single post is part of a larger thread. Start from the top or view this post in context.
Subject Written By Posted
  First time replacing piston ringsTopic by: Jessie Paull Jessie Paull 08/10/20 11:31AM
  Re: First time replacing piston ringsRe: Bob Naske Bob Naske 08/10/20 02:03PM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/10/20 02:16PM
  Re: First time replacing piston ringsRe: Mike Boyd Mike Boyd 08/10/20 02:34PM
  Re: First time replacing piston ringsRe: P D P D 08/10/20 04:55PM
  Re: First time replacing piston ringsRe: Dirty30 Dillon Dirty30 Dillon 08/10/20 05:42PM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/10/20 07:23PM
  Re: First time replacing piston ringsRe: Dirty30 Dillon Dirty30 Dillon 08/10/20 08:31PM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/10/20 10:00PM
  Re: First time replacing piston ringsRe: pat splat pat splat 08/10/20 07:18PM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/10/20 07:21PM
  Re: First time replacing piston ringsRe: Richard Eberline Richard Eberline 08/10/20 07:44PM
  Re: First time replacing piston ringsRe: P D P D 08/10/20 07:52PM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/10/20 10:09PM
  Re: First time replacing piston ringsRe: P D P D 08/11/20 07:22AM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/11/20 07:47AM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/15/20 12:17PM
  Re: First time replacing piston ringsRe: Papa _ Papa _ 08/15/20 01:19PM
  Re: First time replacing piston ringsRe: Jessie Paull Jessie Paull 08/15/20 02:01PM

Want to post in this forum? We'd love to have you join the discussion, but first:

Login or Create Account