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Cam sprockets

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Matt_Harrington:
Rummaging for parts to finish off my engine rebuild I discovered I have 2 different types of cam sprocket - is one later or earlier than the other?

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Nurse Julie:
Never seen the type on the right before 🤔🤔🤔

Matt_Harrington:
The one on the rights is as per the parts diagram - (Issue 4 - 1977)
Deciphering things a bit more, the one with cut outs is an earlier one and the solid one is later. I presume the solid one is a bit better.
I wonder why it was beefed up so much?

Nurse Julie:

--- Quote from: Matt_Harrington on August 14, 2023, 07:02:20 PM ---The one on the rights is as per the parts diagram - (Issue 4 - 1977)
Deciphering things a bit more, the one with cut outs is an earlier one and the solid one is later. I presume the solid one is a bit better.
I wonder why it was beefed up so much?

--- End quote ---
To help stop cam chain rattle noise. I remember now hearing about those very open ones but never seen one up close and personal.

robvangulik:
I've been using one like that for years now, never heard a rattle yet ;)
Less weight is always good!

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