Jump to content

Ring End Gap


RB45
 Share

Recommended Posts

Can anyone tell me the factory recommended ring end gap for a M116 Alpina (new rebore, piston and rings)? My service manual has 2 listings:

Ring End Gap     .002

New                     .012

Thanks.

Link to comment
Share on other sites

 

If you don't get a better answer, I'll say that 0.002" is too tight for anything.   I'm guessing it may be a misprint and should be 0.020" as the service limit.  0.012" seems roughly right for new rings.

At the risk of stating the obvious, the purpose of the end gap is to allow clearance for expansion as the ring gets hot -- you do not want the ends to ever touch.  Minimum end gap is a function of bore diameter and operating temperature. 

New end gap is typically on the order of 0.004" per inch of bore.

  • Thanks 1
Link to comment
Share on other sites

 
 

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

×
  • Create New...