Fw: Pop Off Valve

[justin ivan]

The purpose of routing the air back to the inlet is too fold, depending on 
what type of EFI is on board. This first benifit is that it keeps the turbo 
spooled up between shifts and secondly if the car is MAF equipped then this 
is required to keep the car from going extremely rich/bucking during shifts
Justin


>From: "Bob Wooten" <r71chevy at earthlink.net>
>Reply-To: diy_efi at diy-efi.org
>To: diy_efi at diy-efi.org
>Subject: Re: Fw: Pop Off Valve
>Date: Tue, 2 Jan 2001 22:11:22 -0800
>
>vortech uses one on the LS1 kit that they have for the F bodies, that does
>not have any wires or vacuum lines going to it. it looks just like some
>that i have seen on turbo applications, but vortech is porting the gas back
>to the intput to the blower, don't know why though.  i cant imagine that
>they are that cheap though.
>
>BW
>
>
> > [Original Message]
> > From: <ECMnut at aol.com>
> > To: <diy_efi at diy-efi.org>
> > Date: 1/2/01 10:02:59 PM
> > Subject: Re: Fw: Pop Off Valve
> >
> > I had a turbo from a 2 liter japanese gasoline truck engine that did
> > have an electronically operated valve at the compressor outlet,
> > that, when open, vented the air back to the compressor inlet.
> >  It was a mitsu turbo, so i was curious if they did that with the
> > DSM car stuff.  It does not sound like they did.
> > Thanks,
> > Mike V
> >
> > In a message dated 1/2/01 9:06:48 AM Eastern Standard Time,
> > vlkslvr at hotmail.com writes:
> >
> > >  Let's make sure that we have our terminology straight here, I might
> > >  confused, by pop off valve, I take that to mean a blow off valve of
>B.O.V,
> > >  the purpose of the B.O.V. to vent positive intake pressure when the
> > throttle
> > >
> > >  plate is closed (normall during a shif), this eliminates the pressure
>wave
> > >  from damaging the turbo. By asking if this B.O.V is part of the
>compressor
> > >  housing it almost sounds like you are asking if this is a wastegate
>used
> > to
> > >  limit boost levels.
> > >
> >
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>
>
>
>--- Bob Wooten
>--- r71chevy at earthlink.net
>--- 71-91 RS Camaro
>--- Never mind LT1, this is LT100
>
>
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