I'm just curious as to how much you can overbore the F20C block before needing to re-sleeve it? Searched and couldn't find this information. Thank you.

 

0.010 oversize.. Not much at all. Honda only offers pistons in .010 oversize, too. You need to either re-sleeve, buy a new block, or buy a new bottom end assembly.

There is supposedly a special tool to re-hone the damaged Honda block.

It's gonna be expensive either way, unfortunately.

-LRW

 

Hmmm that's it? Well do you think that is enough to get rid of a very light scoring? I'm going to be putting H22A FRM-friendly pistons in this block.

 

You can over bore 0.25mm (.01in)
What prelude pistons are you planning on using and with what rod/crank combo?

 

H22a pistons and rods, k24 crank.