SOHC.co.uk Forums > CB350/400
Smokey rebuilt 350
Bryanj:
Riding it too gently and infrequently
royhall:
--- Quote from: Bryanj on May 16, 2017, 08:03:33 AM ---Riding it too gently and infrequently
--- End quote ---
Too many bikes versus too little time. The age old problem.
Clem2112:
My 400 smoked a bit from cold startups after its rebuild. This stopped after a few runs though.
I put this down to slight exhaust valve stem wear and there being no seals on the exhaust stems.
The green o rings (under the valve guides?) were not replaced either.
royhall:
People keep mentioning there being no stem seals on the exhaust valves. When I stripped mine there were seals already on all the valves, there were 8 seals in the gasket set, my parts book shows seals on all valves as does the parts drawing on CMS. When I built it I replaced all eight. Maybe some of the USA models had them fitted and the very few sold into Europe (mainly Italy) didn't. Can anybody verify that.
paul G:
Roy,
Both the ones I have done did not have them on the exhaust and both gasket sets only had four in them.
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