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The tube coming down behind the transition is attached to a Hayden Krank vent that continues down underneath the bike. The vent is a one way valve that is ported to maintain a three to five lb. vacuum in the crank case. Apparently it seals the rings better and eliminates any interference internally from underneath the pistons. All I know for sure, is that I put it on and it smoothed out and increased low end power and my gas mileage went up 6MPG.
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http://www.thegsresources.com/_forum...ine=1440711157'78 GS1000E, Dyna-S ignition, Dyna Green Coils, K&N pods, Delkevic SS 4-1 exhaust, Dynojet Stage 3 jet kit, Russell SS Brake Lines, Progressive suspension, Compu-Fire series Regulator 55402 and Advmonster cree LED headlight conversion. -
So it's basically a PCV valve?Comment
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No, It is an umbrella valve. I guess they are both one way valves of sorts, but the umbrella valve would be more closely related to a reed valve. This valve allows air to be pushed out, with a very limited amount allowed to seep back in maintaining it's designed vacuum level. Basically a one way valve maintaining a negative pressure.Last edited by OldVet66; 06-15-2012, 03:43 PM.http://www.thegsresources.com/_forum...ine=1440711157'78 GS1000E, Dyna-S ignition, Dyna Green Coils, K&N pods, Delkevic SS 4-1 exhaust, Dynojet Stage 3 jet kit, Russell SS Brake Lines, Progressive suspension, Compu-Fire series Regulator 55402 and Advmonster cree LED headlight conversion.Comment
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Pretty sure a PCV valve uses a spring to close.Comment
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