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CB350K2 Valve Stem Seals

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Craizeehair:
I am starting to address the cylinder head and have found that the engine gasket set that I ordered does not contain valve stem seals, I’m pretty sure that a previous kit I used on my CB360 came with them but couldn’t say for sure?

No problem I thought and I started to look to see where I can buy these but I can’t seem to find them shown on the parts manual, I have also checked on CMSL but again can’t seem to find them there?

Does anyone know if they actually came with valve stem seals, this engine has them but could someone have fitted them whilst carrying work previously?

Attached are photos of the valve stem seals on this cylinder head and the parts diagrams where I would have expected to find them, any help would be greatly appreciated?

Ken4004:
The gasket set I bought for my 400 F did come with valve stem seals so it was a complete kit so nothing extra to buy, sorry but I can’t remember where I bought it from might have been David Silvers.
I might have some old receipts in the shed .

Ken4004:
I found some valve stem seals on eBay see attached

Craizeehair:
Thanks for that.

I’ve done some more digging and have read that the 350K engines didn’t have valve stem seals, that would seem feasible given that I can’t find them on the parts diagram but it seems some people do fit them and some don’t, there are some on mine but I don’t now know whether to fit them again or not?

McCabe-Thiele (Ted):
Valve stem seals on the inlet valves help reduce oil consumption, the vacuum on the inlet stroke tends to suck oil in past the guides, this can lead to excessive carbon build up on the valve.

I'm a fan of valve seals 👍

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