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Post by maximus on Jun 24, 2019 21:02:03 GMT
👍
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Post by buster on Jun 25, 2019 6:29:05 GMT
dont know if your interested but the cams (full power) can be a bit tricky to come across but there are firms out there that could re profile a low power cam to the standard full power spec. sadly its an expensive business however you look at it.
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Post by maximus on Jun 25, 2019 7:57:28 GMT
Hi Buster
Spent most of last night researching which hondas of the era used the higher lift cam, and I may be wrong but seems the cm400 and 450's are compatible.
Currently watching a few camshafts, but need to confirm if I could get away with using my existing rockers if I had the new camshaft reground (same scenario as fitting a brand new cam?).
Thinking this would be a cheaper option to having the 34.5mm cam built up and then re profiled....?
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Post by maximus on Jun 25, 2019 7:58:58 GMT
The above assumes I cant find a complete head to use....
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Post by BritPete on Jun 25, 2019 9:43:31 GMT
Below is extract from N to NB parts book second one NC Parts book - 2G, G2 is the Low Power Model - these are in the manuals section after 20 posts   If you go on CMS www.cmsnl.com/honda_model8286/ you will probably find the part nos for 450 etc |
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Post by maximus on Jun 25, 2019 10:55:34 GMT
 Thanks Pete. Only at 17 posts....! Different code on CM400 (watching one of the above on American ebay). |
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Post by buster on Jun 25, 2019 11:36:29 GMT
I'll drop the verniers on my 450sc camshaft if I get chance tonight, as that may be another option
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Post by maximus on Jun 25, 2019 11:58:54 GMT
Thanks Buster would be appreciated. Looking at a cb400 and cm400 side by side the cm (bottom image) appears to have wider lobes....  |
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Post by maximus on Jun 25, 2019 12:28:32 GMT
Just add, after a little more research-
The top image is of the 27ps cb camshaft. Looking through google images (assuming they are reliable) have found images that show the full power cb camshaft has wider lobes aswell as a higher lift, as per the cm....
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Post by BritPete on Jun 25, 2019 12:58:18 GMT
See what you mean - here is your photo with the lower camshaft reversed so they are in the same direction  Going to have a look under my Rocker Box Cover at the weekend |
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Post by BritPete on Jun 25, 2019 13:10:13 GMT
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Post by maximus on Jun 25, 2019 13:13:29 GMT
Will be interesting to see what you find as you said your 400 was noticeably quicker than your 250....
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Post by BritPete on Jun 25, 2019 13:21:35 GMT
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Post by maximus on Jun 25, 2019 16:58:06 GMT
Took the plunge and bought the one in the collage photo above.
£66 inc import tax and delivery from the USA....🤞
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Post by buster on Jun 25, 2019 17:54:29 GMT
nice that it seems to be complete  hopefully a bit of minor fettling (lap the valves in etc) and you should be in business. the 450 nighthawk camshaft measured 36.9mm on an inlet, not too bad for a 26000 mile engine. |
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hopefully a bit of minor fettling (lap the valves in etc) and you should be in business. the 450 nighthawk camshaft measured 36.9mm on an inlet, not too bad for a 26000 mile engine.