How many people here have changed pistons without touching the cylinders (i.e. direct replacement, no boring, surface honing)? Realistically, is it that bad of an idea on a low milage engine (62,000miles)? Thanks

 

i did it on my engine with about 65-70k.......using standard bore ITR pistion and new rings. i simply used a glaze breaker to lightly "clean up" the cylinder walls a little. most people will say it's not the best way to do it but it worked out ok for me.........

 

Cool... by any chance do you know what the JDM ITR pistons bring the CR to in an B18A1? The price on this board seems too good to pass up!!

 

you'll probably have to hone it
just lightly though
its not that hard you can do it yourself

 

JDM ITR pistons will bring your CR up over 11:1

not exactly sure. calculating the accual CR is not as easy as it may seem.

 

I've done it. It was no prblem. Just go slow and take your time.
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JDM ITR pistons in a GSR head up CR to 11.4-11.5. I will be doing this soon so that is how I know.

Good Luck

 

I calculated it out and your compression would be 11.14 with OE headgasket.

 

why not throw in some b16 pistons with a gs-r head
it'll bump the compression up to about 11:5:1 and will
be a little cheaper than jdm type r pistons

 

he doesn't have a GSR head