Topic: what engine do I have?

[torrinh]

So after thinking for a few months now that my engine is a k8, because my frame is from 1978, I now think it's from an earlier model, after looking for new pistons rings and other engine parts. The engine number is CB750E-2516563, which as far as can tell, doesn't correspond to any model year. Maybe someone else knows?

[754]

Does it use a clip on the front sprocket?
Does it have spigots for the pipes, instead of studs?

[MJL]

http://www.hondachopper.com/engine/engine_timeline/timeline.html

[scondon]

If you click on the "website" tab at the top of this page you can then navigate to the 750 model guides. First one's free 

'76 750F

http://www.sohc4.net/index.php?q=node/36

[754]

You could have a mixed combo of top and bottom end, makes it harder to nail it down...

[scondon]

You could have a mixed combo of top and bottom end, makes it harder to nail it down...

True. The '76 F pistons have a slight dome on the top, if it helps.

[torrinh]

looks like its an F1. How hard is it to find parts for this model, and what problems did/does this model have? I'm burning some oil right now and I was going to go through the valves and replace the rings, but now I'm not sure, and I might just look for a K engine, k3-5.

[bryanj]

Engine number suggests 76 cb750F but that might well be only the cases and all the internals different