Ross ring end gaps

Brian

Brian

Well-known member
I am in the process of finally assembling my stroker motor. It would appear the outfit that balanced my engine has lost the spec sheet that came with the Ross pistons and rings. These are the narrow section moly rings, 3 5/16 bore. Does anyone out there in Fordland know what the end gaps should be set at for this particular style of ring? Thank you, Brian
 
Thanks Andy, I know the general rule of thumb is to gap rings .003-.004 per inch of bore, but seemed to recall the spec sheet had a different setting. Unusual having the top ring [which sees more heat] set with the end gaps closer than the second! Thanks again, Brian
 
DON'T file the top (moly) ring, it says somewhere... My Ross (cast) rings got .003 per", for .010 end gap- ok by me, Karl
 
DON'T file the top (moly) ring,
I need to open up the gaps, how does one do that if one cannot file them? Brian
 
I just fitted a set of ross rings to my engine last week,3.5/16 bore,the spec sheet said 3 thou per inch of bore for the top ring,It said to make the secound ring gap larger to allow any gas to escape and not build up,.
Lawrie
 
This is the instructions that came with my Ross pistons and the thin 1.5 mm top rings, may be hard to read, I can email the larger scan if you need it.

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Vergil
 
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