1986 Marathon 2pg piston ring gap

milabu69 · 08-09-2012, 03:56 PM

I am boring cylinder oversize for a new piston and would like to know what the end gap should be for the piston rings. Thanks

racin161 · 08-09-2012, 07:50 PM

.010-.016 with an over bore I'd go in the middle to be safe and first tank of fuel 40:1 or 3oz per gallon after that 128:1 or 1oz per gallon.

LOU

firecart1 · 08-12-2012, 08:19 AM

I second that Lou.....Well put!!

08-09-2012, 03:56 PM	#1
milabu69 Not Yet Wild Join Date: Aug 2012 Posts: 22	1986 Marathon 2pg piston ring gap I am boring cylinder oversize for a new piston and would like to know what the end gap should be for the piston rings. Thanks
milabu69 Not Yet Wild Join Date: Aug 2012 Posts: 22

08-09-2012, 07:50 PM	#2
racin161 Gone Wild Join Date: Feb 2011 Posts: 1,515	Re: 1986 Marathon 2pg piston ring gap .010-.016 with an over bore I'd go in the middle to be safe and first tank of fuel 40:1 or 3oz per gallon after that 128:1 or 1oz per gallon. LOU
racin161 Gone Wild Join Date: Feb 2011 Posts: 1,515

08-12-2012, 08:19 AM	#3
firecart1 Getting Wild Join Date: May 2011 Posts: 111	Re: 1986 Marathon 2pg piston ring gap I second that Lou.....Well put!!
firecart1 Getting Wild Join Date: May 2011 Posts: 111

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