SOHC.co.uk Forums > The Black Bomber Board
1969 CL450 US Barn Find Restoration
MrDavo:
Playing around with the stem length sounds scary, what about the hardening? Lets hope not.
Anyhow, I suppose its not beyond the wit of man for me to mark the back of the cam base with small paint marks (I can use the yellow paint pen I bought for my CB750, that's another thread altogether) then see if I can get the gaps about right with the head off the bike, better than finding out once I've built it.
This looks good, valve gear assembly step by step, with photos that haven't been screwed over by Photobucket:
http://www.hondatwins.net/forums/1-project-logs/11792-cb450-cl450-valve-train-assembly-pictorial.html
royhall:
That's a very good thread on the head assembly. I'm watching this thread closely as I'm about to start work restoring my Bomber. Was looking forwards to it, but am not so sure now. As your finding, there's a lot of learning to be done.
jensen:
--- Quote ---I pm’d Jensen, so he should see this
--- End quote ---
A late response since work, work and work consumes all the time I have at the moment.
If the lobes are ok, just can re-use this cam. Make sure you polish the edges a bit, so that no extra material brakes out.
I can't give you an advice about using the rubber rings in general or not. I only can say that I prefer them, makes the head noisy without them, just replace them when re-build an engine with fresh, original Honda rubber rings. Personally I only saw issue's with these rubbers on old engines with no history of rebuilding what so ever. I think it's wise to replace them within 20 years or so ;)
In this particular case I would't use them, there is a lot of material gone to keep the rubber in place, that could be a risk.
Jensen
MrDavo:
Thanks for the reply Jensen, I appreciate your input. I have ordered new rings, these are nearly 50 years old and rock hard. It would be horrible if they started to break up in service after such a long sleep.
I am glad you think I can reuse the cam as otherwise it is perfect.
The valve seats were done with grinding paste but not recut. Let’s hope I won’t need to use your expertise on shortening valves and guides to get acceptable clearances.
K2-K6:
Just picking up on Laverda120 post earlier ( i wouldnt in this example here as the lobes area so good) but for others looking in its worth gaining the opinion of the indicated supplier to see what they could offer. Some of these services in the past have offered wildly varying results (I've no knowledge of that supplier though, so no reflection of their work) .
http://www.common-motor.com/Honda-CB350-CB360-CB450-CB500T-CB550-Rebuilt-Camshaft-Rocker-Arms
Found the above though which indicates some specialisation in these components, unsurprisingly if anyone has direct experience of them.
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