Boost

[Phil Martin]

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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