TOPIC:

would there be any problems swapping heads from a 1980 to a 1977 kz 650? Thanks

Hey Zippoman. You should be ok with the head swap as long as you keep the complete cam chain assembly and tensioner from the '77650's roller chain assembly. Should be just a bolt on job.

Cheers-Colin Firth-Ontario Canada
1977Kz650 Custom - 810 big bore with lottsa go-fast goodies tucked away inside.

got to plug off the emissions from the exhaust side also doesn,t he?

Use the 1977 650 valve cover and you should be good 2 go.
-Colin Firth

but won't the exhaust still blow into the cover? does he still have to pipe plug or fill the emission ports that come from the exhaust ports into the clean air-reed valve set-up? i know ape makes a block off plate for this head. i got the same head and i was wondering the same thing.i thought 80 heads had that. can we block them then use our old valve covers?

Thanks for the replies, will the cams work ok with my cam chain?

zippoman wrote:

Thanks for the replies, will the cams work ok with my cam chain?

I don't know why not, both 77 and 80 KZ650's have a roller cam chain.