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Jim Brierley · 10-17-2018, 10:34 AM

The rigid hones are best, they remove any high spots in the cylinder. You may be able to rent one? Hone first to see if bores are good. Boring to 4" does not require any trick stuff, there is enough metal in the block to do this. In the old days racers bored to 4.060" but had to shift the center-lines in order to have the gasket seal well. 4" does not require a heavy duty radiator.

10-17-2018, 10:34 AM	#15
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,089	Re: Honing Cylinders The rigid hones are best, they remove any high spots in the cylinder. You may be able to rent one? Hone first to see if bores are good. Boring to 4" does not require any trick stuff, there is enough metal in the block to do this. In the old days racers bored to 4.060" but had to shift the center-lines in order to have the gasket seal well. 4" does not require a heavy duty radiator.