internal pressure?

Steve Northrop blackgpz at
Sat Mar 17 19:19:05 PDT 2007

Yes Pete, it is directly below the reed valves in the valve cover, right 
next to the spark plug recess. It goes through the cylinder head and exits 
in the exhaust port. It's kind of hard to see because the exhaust port is 
always so black, but it's there. The valve between the hoses that attach to 
the reed valve chambers is just a vacuum valve that opens with engine vacuum 
to allow the air to flow from the airbox.

Steve in Western NY
'96 GPZ1100
'02 Daytona 955i
"You Can't Fix Stupid", Ron White

----- Original Message ----- 
From: "schnowz" <schnowz at>
To: <gpzlist at>
Sent: Saturday, March 17, 2007 10:57 PM
Subject: Re: internal pressure?

>   OK, I ammend my former post. It is a suction valve not a positive 
> pressure valve. I never looked at the valve cover closely I thought the 
> valve vented the top end, but Steve you are saying there is a passage that 
> goes to the exaust port?
> Pete

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