Did you ever wonder why file-fit rings are .005" OS?
For example: File fit rings for a 4.030" bore are 4.035" .
Using file fit rings is a waste of time...and money, especially if you are paying some "expert" to fit them. You should install rings that selectively fit the bores as is.
Or, use Total Seal gap less rings, if you don't mind some ring flutter at high RPM..
Last edited by MouseFink; 03-23-2013 at 07:42 AM.