SOHC.co.uk Forums > CB350/400

valve stem oil seals, cb340/4

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dickyta2:
Has anyone had any issues with aftermarket valve stem oil seals?

   I`ve just rebuilt a 350/4 motor, including new pistons and a rebore  and I`m getting smoke coming out of the breather pipe and a small amount out of the exhaust...it does seem to be running fairly well though!!!

Trigger:
It is most probably not smoke, it is oil vapour from the oil cooking because it is hot

dickyta2:
Okeydokey, cheers for that Trigger :-)

Trigger:
Your engine breather hose should go to your air box. If it is not vapour maybe, someone did not rebore your barrels to the correct spec.

dickyta2:
Theres no airbox on it I`m afraid!!

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