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Walt Dupont--Me. · 02-03-2016, 07:56 AM

If your using a 4 inch crank you have to use a piston that is 1/8 shorter from the center of the wrist pin to the top of the pistons than the 3-3/4 crank piston. Walt

02-03-2016, 07:56 AM	#10
Walt Dupont--Me. Senior Member Join Date: May 2010 Location: Gardiner Me. Posts: 4,200	Re: Some advice on 8BA pistons If your using a 4 inch crank you have to use a piston that is 1/8 shorter from the center of the wrist pin to the top of the pistons than the 3-3/4 crank piston. Walt