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Ed Wright · 01-25-2015, 09:51 PM

Alan, with a 4" bore with a Napier 2nd ring, I have not found more than 7lb oil rings needed. I can tell you 4.5lbs is too light. :-)

01-25-2015, 09:51 PM	#7
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 389 Times in 168 Posts	Re: Piston Ring Spacers Alan, with a 4" bore with a Napier 2nd ring, I have not found more than 7lb oil rings needed. I can tell you 4.5lbs is too light. :-) __________________ Ed Wright 4156 SS/JA