What octane fuel should I be running?

I wanted to double check on what octane fuel I should be running in my '78 Kz650.

I run the real expensive stuff, hey wait its all the expensive stuff nowadays. I actually just run the 87 octane with no real problems. Wayne

ill second the 87...it doesnt seem to run any better on high test so why waste the money?

fuzzwardo wrote:

I wanted to double check on what octane fuel I should be running in my '78 Kz650.

This is a very common topic. A search for "octane" found this among the many:

kzrider.com/component/option,com_joomlab...atid,2/id,2304/#2304

..of course if you wanted to beat the horse completely to death, you could search in the Archive as well...

That's what I was thinking. I have been running 87 in it but figured I'd ask.