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CB350 1971 Restoration Project

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Laverda Dave:
Great work Ben. Do you think you will have the bike on the road before the end of summer as the end goal 🙂

McCabe-Thiele (Ted):

--- Quote from: BenPowell on May 31, 2023, 07:47:28 AM ---
--- Quote from: McCabe-Thiele (Ted) on May 31, 2023, 07:37:42 AM ---Read your whole project post again - very interesting rebuild - my heart sank when I saw the camshaft bearing worn oval.

How did you fix that in the end ?

--- End quote ---

Yeah the camshaft bearing was really bad, considering the condition of the rest of the engine I wouldn’t have expected that, in the end I managed to get hold of a NOS cam bearing, failing that i was going to bore it out and machine a bush. I think it could be done fairly easily, unfortunately I don’t have access to a lathe anymore since I’ve moved jobs, I would like my own lathe at some point and I’ve kept the old bearing so might get chance to have a go in the future, just to see how feasible it is.

--- End quote ---

So is the bearing separate from the cam cover - lucky to find a NOS part.

BenPowell:

--- Quote from: Laverda Dave on May 31, 2023, 08:15:59 AM ---Great work Ben. Do you think you will have the bike on the road before the end of summer as the end goal 🙂

--- End quote ---

That’s the plan, still need to do my test and get it registered though 😂

BenPowell:

--- Quote from: McCabe-Thiele (Ted) on May 31, 2023, 08:31:56 AM ---
--- Quote from: BenPowell on May 31, 2023, 07:47:28 AM ---
--- Quote from: McCabe-Thiele (Ted) on May 31, 2023, 07:37:42 AM ---Read your whole project post again - very interesting rebuild - my heart sank when I saw the camshaft bearing worn oval.

How did you fix that in the end ?

--- End quote ---

Yeah the camshaft bearing was really bad, considering the condition of the rest of the engine I wouldn’t have expected that, in the end I managed to get hold of a NOS cam bearing, failing that i was going to bore it out and machine a bush. I think it could be done fairly easily, unfortunately I don’t have access to a lathe anymore since I’ve moved jobs, I would like my own lathe at some point and I’ve kept the old bearing so might get chance to have a go in the future, just to see how feasible it is.

--- End quote ---

So is the bearing separate from the cam cover - lucky to find a NOS part.

--- End quote ---

No, its one part, the camshaft sits directly in the housing, so I would have to over bore it, then use use some material to make a sleeve to reproduce the original bore size, would need to be suitably locked in place, but should be fine to do.

McCabe-Thiele (Ted):
So it's separate from the cylinder head not  unlike a cam cover.

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