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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