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Fordors · 11-14-2014, 03:03 PM

A Briggs is not a Model A, especially considering the bore size. I'd recommend .004/1" of bore for first and second rings. If you were to tear it down, if only for a look-see, check the ends of the rings to see if they are shiny. That would be a sure sign they do not have enough end gap. An end gap too large is always much less of a problem than one too tight.
That Briggs manual also said .005 ring groove to ring clearance max. which is way over any reasonable amount.

11-14-2014, 03:03 PM	#5
Fordors Senior Member Join Date: May 2010 Location: Orland Park,IL Posts: 1,402	Re: A question on Les Andrews's ring specs A Briggs is not a Model A, especially considering the bore size. I'd recommend .004/1" of bore for first and second rings. If you were to tear it down, if only for a look-see, check the ends of the rings to see if they are shiny. That would be a sure sign they do not have enough end gap. An end gap too large is always much less of a problem than one too tight. That Briggs manual also said .005 ring groove to ring clearance max. which is way over any reasonable amount. __________________ My school colors are black and blue, I attended the School of Hard Knocks where I received a Masters Degree in Chronic Mopery.