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dave in australia · 03-10-2015, 01:21 AM

The last set of pistons I installed were on my Durant D60. I gave the bore diameter to the piston manufacturer, JP Pistons of Adelaide, South Australia, and they machined the pistons to suit. What the clearances were, I have no idea, but they went in, don't have any piston slap, don't seize when warm and running, so all is good. By giving JP the bore size, they can then set the clearance they require for their pistons, and not some mechanics "we used to set xxx clearance way back when", and then have something go wrong.

03-10-2015, 01:21 AM	#15
dave in australia Senior Member Join Date: May 2010 Location: Victoria, Australia Posts: 1,241	Re: Tight Piston Clearance, Not Model A The last set of pistons I installed were on my Durant D60. I gave the bore diameter to the piston manufacturer, JP Pistons of Adelaide, South Australia, and they machined the pistons to suit. What the clearances were, I have no idea, but they went in, don't have any piston slap, don't seize when warm and running, so all is good. By giving JP the bore size, they can then set the clearance they require for their pistons, and not some mechanics "we used to set xxx clearance way back when", and then have something go wrong.