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Do US bikes have a valve cover vent?

Posted: Fri Jun 05, 2015 1:10 pm
by Sirhc
Do US bikes have a valve cover vent?

I've just put my top end back together, and have left the carb heater off (I'll only put it back if I have problems).

This has left me with a pipe coming from the valve cover - currently just venting to atmosphere.

I'm thinking of just blanking it of - the circuit is effectively closed off until temps drop anyway (if I understand how it works).

Things is past bikes have had a vent in the valve cover, so is something going to screw up?