SOHC.co.uk Forums > CB350/400

Cam sprockets

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Laverda Dave:
My original 400/4 I restored back in 1991 has the thinner cam sprocket. When I restored the blue 400/4 about 5 years ago the cam sprocket was the two piece type. I can't say the thicker sprocket reduced the chain rattle noise though as I had both bikes running at the same time once to compare the original 400/4 exhaust with the DS replica. The 400/4 'rustle' sounded exactly the same on both bikes.

Matt_Harrington:
I'm with Rob, if no significant difference then lighter weight has to be beneficial. I'll probably fit the one that comes to hand first!!  :o

Trigger:
Same as on the CB750's. Solid sprocket on the early models , lighter cut out sprockets on the later models.  ;)

Matt_Harrington:
Graham, my parts book says the one with holes is the earlier one and the solid one is later. Did you mean the same for the CB750's or the opposite?  ???

AshimotoK0:

--- Quote from: Trigger on August 15, 2023, 06:50:52 PM ---Same as on the CB750's. Solid sprocket on the early models , lighter cut out sprockets on the later models.  ;)

--- End quote ---

Are they interchangeable ? i.e later one can beused on K0

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