Stock Bore using 4.04 rings

duramaxzak

Wanna be puller!
Nov 22, 2008
2,431
14
38
Minnesota
Care to elaborate? I'm guessing it has to do with your newly built motor! The only advantage I could maybe see was lower spring tension on the cylinder walls, but I think it would make the end gap big.
 

Yellow Jacket

WannaBe Sled Puller
Feb 11, 2009
917
0
16
Waterloo, IA
The only reason I could see is you wouldn't have to file to fit, there would probably already be plenty of ring gap....

And/or that the 4.040 is a much better quality or cost of ring because it is a "standardized" ring readily available...