SOHC.co.uk Forums > The Black Bomber Board
1969 CL450 US Barn Find Restoration
AshimotoK0:
Found it.
http://www.hondatwins.net/forums/55-engine-discussion/60154-cam-chain-damper-ring-question.html
http://www.hondatwins.net/forums/55-engine-discussion/14405-450-cam-chain-noise-cam-guides-rubbers-research.html
Who the hell is Bubba was he the Vietnam vet in Forrest Gump?
Laverda Dave:
Great thread and I don't even have a Bomber!
Just a thought about the lack of exhaust cams due to lobe pitting (and happy to be shot down in flames for my naivety) but could you get the damaged lobes reground by Newman Cams? They have done a lovely job on my CB250RS cam, two lobes built up and reground for £53.
I guess they could also reprofile a cam from a different model 450 into the profile you want providing they have a pattern of the profile you need and providing the newer cam is the same dimensionality as the old one?
AshimotoK0:
--- Quote from: Laverda120 on February 14, 2018, 09:51:24 AM ---Great thread and I don't even have a Bomber!
Just a thought about the lack of exhaust cams due to lobe pitting (and happy to be shot down in flames for my naivety) but could you get the damaged lobes reground by Newman Cams? They have done a lovely job on my CB250RS cam, two lobes built up and reground for £53.
I guess they could also reprofile a cam from a different model 450 into the profile you want providing they have a pattern of the profile you need and providing the newer cam is the same dimensionality as the old one?
--- End quote ---
I probably have a cam with good journals he could have to get pits removed from the lobe(s) by hard welding/regrinding but I imagined it would work out expensive. I think a member here has used Newman cams for a 450 cam too years ago and reported good results.
MrDavo:
--- Quote ---I guess they could also reprofile a cam from a different model 450 into the profile you want providing they have a pattern of the profile you need and providing the newer cam is the same dimensionality as the old one?
--- End quote ---
The K6 cam is the only one that's different, sadly the tacho drive gear is different too. If I can I'll run with what I've got, as the lobes and bearing sufaces are like new.
I could get goosed ones reprofiled, but I'd rather not if I don't have to.
Bubba is just used by me as a generic American name for the previous owner, but he's usually the one to watch out for when you drop the soap in the prison shower.
--- Quote ---Bubba - name for a close friend or boyfriend. Originating from Bubs. Bubba implies someone special and close to your heart.
Bubba is a southern derivation on the word "Brother"
Urban Dictionary
--- End quote ---
From what I read in the twins forum, I wouldn't take mechanical advice from people who seem to always know better than Honda engineers (they don't), think all bikes run smoother without a head steady (maybe, then the frame cracks somewhere else that's now overstressed), and probably run noisy 450s without damper rings because they are scared to tackle splitting the camchain and taking the head off. That may have been the PO's problem, I agree. So instead he hit with a fecking hammer. Jesus wept. Perhaps he was trying to chisel the camchain apart on the exhaust chainring.
I have the cam on my desk, those damper rings, though in good nick, are rock hard. Given that my carb inlet rubbers were hard like stone with age, until Ashley put them in his magic fluid, I think they may be past their best. Should there be any 'give'?, because there isn't, they are like hard plastic.
Edit: See, I slag off the twins guys, then I find useful info on there, two faced $%*& or what?
--- Quote ---And they're (the "rings") not plastic, but some sort of neoprene I think - when new they're very flexible.
They cannot be installed without tearing out the cams.
--- End quote ---
Another Edit: Nope, it was the sohc4.net forum after all, now they do know their onions. But these are dohc bikes, oh wait.... ;)
New ones being ordered today.
I think K2-K6's advice sounds good to me, its not a stressed area, if I could get a new cam then I probably would for peace of mind, but they are made from 100% unobtanium.
I also found this on the US sohc forum, dated September '17:
--- Quote ---CL350 or 450? 450's are generally worth more.
What are his plans?
Does he want to keep it stock or mod it?
An intact stock exhaust on these bikes can be worth as much as the whole bike.
--- End quote ---
8) Smug. See photos on page one.
K2-K6:
Possibly of interest, can't see exact condition from those images though.
https://www.ebay.co.uk/itm/Honda-CB450-CB-450-Cylinder-Head-with-cams-Free-UK-Postage-AK/222732489449?_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D1%26asc%3D20150313114020%26meid%3D38ad87f6fe5a4bc98b4e30f7395255ae%26pid%3D100338%26rk%3D5%26rkt%3D15%26sd%3D222834616179%26itm%3D222732489449&_trksid=p2141725.c100338.m3726
Could by worth a look if correct type.
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