So I inherited a box of rebuild stuffs with my donor integra, I figured I might as well try and use everything I can before I start spending. The question is, will b18c5 pistons work in a b18b block? if so what needs to be modified? and will the engine be able to handle the increased compression?

I'm not new to engines. I can rebuild a hell of a small block v8. but I am fresh to Hondas, any input would be greatly appreciated!

 

Bore size is the same for both engines. So as long as your PTW clearances are ok, they should work.

 

Also, the compression height can throw a monkey wrench into the works. Don't want the piston coming out of the block in most cases.

Will have to look at the specs of the two B series motors. If the deck height and the rod length is the same on both motors with the same stroke, then you know the compression height will be the same or acceptable.