honda305.com Forum

I am working with an odd engine at the moment and it is the only one I have with valves in it. Can someone please share with me the stock valve head size for a 305 both intake and exhaust. Also I what is the stock stem size? The engine in question is a 1962.

If you are still looking PM me I have a long one.

Hey guys, this seems to be a popular question. I have found a number of threads on this subject. I have also read a lot of claims on this subject and because I have both in front of me at the moment I thought I would take the time to detail the differences. To clarify before I begin I purchased the ...

Alan,
Thanks for posting that fender. I have been curious to see it, looks like a reversed CB160 fender.

Hi,

You're a lucky guy, you won't find a 10mm head CB77 often.
I only saw one, ever. Got it from a friend and gave it away to someone who really needed it for his resto.

Jensen

Don't most 1961 CB77/CB72s have 10mm spark plugs? I have had two cb72s with 10mm spark plugs and a very early CL72 ...

jensey wrote:Hi,

Is it a 10mm head ?, what's the engine number ?

Jensen

Yes it is a 10mm head. Engine number is 1107XX.

Fin repair complete today. I'll need to clean up the rest of the fins to try and blend this in a bit more. The guy did a fantastic job on this and the price was much cheaper than I expiated, I have avoided fin repair in the past thinking it was going to be expensive, but it would have been more ...