Grady,
Yes! The only other way is using the pressure pulsations from the "other
cylinders" to assist in ramming the air into the intake port of the
head/manifold. it only works under a particluar RPM range though and is
usually a compromise somewhere, and its still a "compression" of the gas! A
spacer "may" reduce the eparation of the flow into the manifold and
increase its velocity a bit, helping the compression wave tuning, but I
doubt it is very effective if at all and it would only work under a
particluar RPM and load range IMO!
Bruce
----- Original Message -----
From: Grady Ogburn <jgo@uswest.net>
To: <dakota-truck@buffnet.net>
Sent: Tuesday, October 17, 2000 8:32 AM
Subject: Re: DML: Re: TB SPACER
> The K&N improves airflow.
>
> 1. The resistance to airflow is reduced, therefore the engine spends less
> power pulling air into its cylinders.
> 2. The air entering the TB is cooler (when the filter element is isolated
> from the hot air in the engine compartment), and therefore denser. More
> molecules of air per cubic inch. More combustible O2.
>
> The only other way to get more air into a given cylinder aside from
cooling
> it is to compress it, unless I'm forgetting basic physics.
>
> Think about the intake stroke -- unless you're forcing air, the piston
> (fixed diameter), travelling the length of the stroke (fixed distance)
> through the cylinder will pull a fixed volume of air. How would placing
an
> extra volume of air *above* that mechanism increase the amount of air that
> the piston can pull into the cylinder?
>
> The modified *path* could have some effect on flow or maybe fuel mixing,
but
> on the volume of air? I don't think so.
>
> Grady Ogburn
> '98 Sport CC 4x4
> 5.2l, 5 Speed
> Mesa Headers & Cat
> K&N FIPK, JET PCM
> Gibson/MagnaFlow "FrankenPipe" Exhaust
> Leer Topper
>
> ----- Original Message -----
> From: "Jason" <jason.myatt@Sympatico.ca>
> To: <dakota-truck@buffnet.net>
> Sent: Monday, October 16, 2000 9:53 PM
> Subject: Re: DML: Re: TB SPACER
>
>
> NO you cant make it more than 3/4 inch tops or she'll stall/chug/pop/bang/
> ect.
>
> Also you may need to replace some head gasgets if you go over one inch.
> and yes the cylinder will accept more air than it does now .. how do you
> think
> your K&N works???????????
>
>
> Grady Ogburn wrote:
>
> > > The spacer ( say 3/4inch thick) has a volume to it. thus the air
volume
> > > introduced to the cylinder on intake stroke is increased....but the
darn
> > > computer dont know it cause the spacer volume is located after all
> censors
> > do
> > > there readings. so youget more air but the same fuel shot in by the
> > > injector.(cause it dont know about the extra air) then on compression
> the
> > > volume is greater so you get more compression which in turn fires that
> > piston
> > > down a little harder so (you go faster)
> >
> > Lemme get this straight -- the crank pulls the piston down the same
> > cylinder, and it gets more air if there's a TB spacer just because
there's
> > more air to be had? So if I put a four inch spacer there I'll go even
> > faster?
> >
> > I'm thinkin Po Boy TB spacer. I can cram a coupla FEET of spacer under
> that
> > hood.
> >
> > Grady Ogburn
> > '98 Sport CC 4x4
> > 5.2l, 5 Speed
> > Mesa Headers & Cat
> > K&N FIPK, JET PCM
> > Gibson/MagnaFlow "FrankenPipe" Exhaust
> > Leer Topper
> >
> > ----- Original Message -----
> > From: "Jason" <jason.myatt@Sympatico.ca>
> > To: <dakota-truck@buffnet.net>
> > Sent: Monday, October 16, 2000 8:44 PM
> > Subject: Re: DML: Re: TB SPACER
> >
> > I really dont want to argue about your test results.......but I will say
> we
> > can
> > take advantage of the spacer with our MPI .
> > The way it works is this
> >
> > The spacer ( say 3/4inch thick) has a volume to it. thus the air volume
> > introduced to the cylinder on intake stroke is increased....but the darn
> > computer dont know it cause the spacer volume is located after all
censors
> > do
> > there readings. so youget more air but the same fuel shot in by the
> > injector.(cause it dont know about the extra air) then on compression
the
> > volume is greater so you get more compression which in turn fires that
> > piston
> > down a little harder so (you go faster)
> > The fuel economy relly comes in to play because you have more power now
so
> > you
> > dont need to push down the go pedel as far to get the same output.
> >
> > and finally the reason that your k&n's or whatever make the thing use
more
> > gas
> > is cause our old pal the computer knows your givving her more air and
he
> > squirts in a little more gas to keep everything in check with
programming.
> >
> > Maybe you should try the dyno again?
> >
> > Thanks for your time
> > Jason
> >
> > Bernd D. Ratsch wrote:
> >
> > > I've run TB spacers on a Dyno and there's NO improvement in HP or TQ.
> > (And
> > > also at the track.)
> > >
> > > Since our systems are MPI and not TBI, we can't take advantage of the
> > > increase volume that they give...in some cases.
> > >
> > > - Bernd
> > >
> > > ----- Original Message -----
> > > From: "Jason" <jason.myatt@Sympatico.ca>
> > > Subject: DML: TB SPACER
> > >
> > > > Hi there its been a while for me writing but this is some good news
> for
> > > >
> > > > any v6ers out there with no money left cause of gas costs.
> > > > My buddie and i just made our own TB spacer last week for my truck
> 2000
> > > > dak cc 3.9
> > > > and guess what IT REALLY WORKS.
> > > > Very much improved torque and power and 115 yes 115 extra kilometers
> on
> > > > a tank of fuel.
> > > > I went from around 475 kilos on 65 litres of fuel (REGULAR UNLEAD)
to
> > > > 602 kilos on exactly 67. litres of fuel. ( REGULAR UNLEAD)
> > > >
>
>
>
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