Honda Cr80 question please help

[By bradbowe, Posted March 19, 2008]

I have a 2002 cr80 .Will a top end and piston from a cr85 06 fit on the 02 engine.

[By CV4, Posted March 19, 2008]

No. The 80 had a 47mm bore while the 85 has a 47.5mm bore.

[By CRFPOOR, Posted March 21, 2008]

I think it will if you ues the 85 jug.

[By teemtrubble, Posted March 22, 2008]

You could bore and hone it but I don't know if the wrist pin is the same dia...