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frnkeore · 08-08-2019, 07:41 PM

If you use the 6.75 rod, you an use std factory, 3 1/16 pistons and have the factory deck clearance, using the 4 1/4 crank. But, you will have to find a way of using the 2.138 rods.

I know it may sound strange but, if you like, I will show you the math for it.

A question for everyone:
What is the min bore to get a 2.138 rod in the block?

08-08-2019, 07:41 PM	#45
frnkeore Senior Member Join Date: Jul 2019 Location: Southern Oregon Posts: 782	Re: 1CM Merc Crank In A 40? If you use the 6.75 rod, you an use std factory, 3 1/16 pistons and have the factory deck clearance, using the 4 1/4 crank. But, you will have to find a way of using the 2.138 rods. I know it may sound strange but, if you like, I will show you the math for it. A question for everyone: What is the min bore to get a 2.138 rod in the block?