View Single Post
Trackrash Trackrash is offline
Under the radar
Trackrash's Avatar
Join Date: May 2007
Location: Sebastopol, the land of wine and redwoods in The Republic of California.
Posts: 5,243
From my experience, the piston ring side clearance is critical. With new rings there will be more "bite" or friction on the cylinder walls. Therefore the ring side gap will typically get pounded and enlarge during break-in. So the rule of thumb is more than 0.004" side clearance with new rings and the piston is done, not worth re-ringing.

0.006" sounds a little tight for end gap, but I will defer to the experts.
'71 911 Coupe 3,0L outlawed
#56 PCA Redwood Region, GGR, NASA, Speed SF
Trackrash's Garage :: My Garage
Old 06-07-2018, 10:08 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)