Boost

[Bob Wooten]

I get what you are saying.  the intent is to get the car to not burn the
fuel so that it is still burning in the exh so that it will continue to
spin the turbo.  similar to the flames that you see coming out of a TF
motor.  lots of fuel just burning out the exh.  

thanks
BW


> [Original Message]
> From: Phil Martin <Phil at muts.freeserve.co.uk>
> To: <gmecm at diy-efi.org>
> Date: 12/5/00 4:30:34 PM
> Subject: Re: Boost
>
> Retarding the timing causes the engine to burn fuel very inefficiently
while
> still allowing large amounts of airflow to spin the turbo. (by backfiring
I
> mean uncomplete burned fuel burning in the header causing lots of
> explosions) I didnt mean inlet backfiring. Maybe I have my wording wrong.
If
> anyone else can explain this better please have a go.
> ----- Original Message -----
> From: "Bob Wooten" <r71chevy at earthlink.net>
> To: <gmecm at diy-efi.org>
> Sent: Tuesday, December 05, 2000 5:27 AM
> Subject: Re: Boost
> 
> 
> > Phillip,
> >
> > I get the part about putting air & fuel into the cyl to keep the turbo
> > spooled up but, you have me confused,  does not a backfire go back up to
> > the TB, not to the turbo?
> >
> > BW
> >
> >
> >
> > > [Original Message]
> > > From: Phil Martin <phil at muts.freeserve.co.uk>
> > > To: <gmecm at diy-efi.org>
> > > Date: 12/4/00 5:16:45 PM
> > > Subject: Re: Boost
> > >
> > > The best way to reduce lag is to use rally car anti-lag which involves
> > using
> > > an air bypass valve to let air around the throttle butterfly, retard
the
> > > timing heavily and inject lots of fuel.
> > > This has the effect of large backfires which spin the turbo even at
very
> > low
> > > rpm when off the throttle.
> > >
> > > Phillip Martin
> > >
> > > ----- Original Message -----
> > > From: "Bob Wooten" <r71chevy at earthlink.net>
> > > To: <gmecm at diy-efi.org>
> > > Sent: Sunday, December 03, 2000 7:11 AM
> > > Subject: Re: Boost
> > >
> > >
> > > > which is kind of my point.  sounds to me like this is something that
> is
> > > > mostly for a stick in either street or Auto X (or F1 or somewhere
else
> > > that
> > > > they use turbos) applications where this is an issue & i would think
> not
> > > > for Drag @ all.
> > > >
> > > > thanks for the info gents, as usual very insightful.
> > > >
> > > > BW
> > > >
> > > >
> > > > > [Original Message]
> > > > > From: Bruce Plecan <nacelp at bright.net>
> > > > > To: <gmecm at diy-efi.org>
> > > > > Date: 12/2/00 8:23:07 PM
> > > > > Subject: Re: Boost
> > > > >
> > > > > Engine still changes rpm.
> > > > > At 100,000 rpm it doesn't change speed as fast as the engine.
> > > > > I power shift the GN all the time (It's an auto)
> > > > > Bruce
> > > > >
> > > > > > do you mean that w/no backpressure the turbo is spooling even
> though
> > > the
> > > > > > throttle is closed?  & then when the trottle is hammered back
on &
> > the
> > > > > > clutch let out that it is still spooled up?  does no-one that
> > drives a
> > > > > > turbo power shift?
> > > > > >
> > > > > > BW
> > > > > >
> > > > > >
> > > > > > > [Original Message]
> > > > > > > From: Jeremy Gonyou <jgonyou at hotmail.com>
> > > > > > > To: <gmecm at diy-efi.org>
> > > > > > > Date: 12/2/00 2:44:43 PM
> > > > > > > Subject: Re: Boost
> > > > > > >
> > > > > > >
> > > > > > > >A blow off valve is to bleed air from the compressor spike
when
> > you
> > > > > slam
> > > > > > > >the throttle body shut. It's supposed to stop you from
damaging
> > > your
> > > > > > turbo.
> > > > > > > >However, in talking with people who build turbos and have
been
> in
> > > the
> > > > > > > >industry for a very long time, it's their feelings that the
> blow
> > > off
> > > > > > valves
> > > > > > > >available to people like us don't really serve that purpose
> > because
> > > > > they
> > > > > > > >react too slow.
> > > > > > >
> > > > > > > I think that the real reason people want them is for the
> improved
> > > > > > throttle
> > > > > > > response between shifts.  The idea is that with a blow off
valve
> > > your
> > > > > > turbo
> > > > > > > is free to spool with the throttle closed and you have your
> boost
> > > > > > availabe
> > > > > > > when you let out the clutch.  Kinda like toyota's cool
bang-bang
> > > > system
> > > > > :)
> > > > > > >
> > > > > > > Jeremy
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>
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> > > >
> >
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> > > > > >
> > > > > > --- Bob Wooten
> > > > > > --- r71chevy at earthlink.net
> > > > > > --- 71-91 Camaro
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> > > > --- Bob Wooten
> > > > --- r71chevy at earthlink.net
> > > > --- 71-91 Camaro
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> > --- Bob Wooten
> > --- r71chevy at earthlink.net
> > --- 71-91 Camaro
> >
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--- Bob Wooten
--- r71chevy at earthlink.net
--- 71-91 Camaro


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