[Shotimes] about the intake

[Kirk Doucette]

The longer the runner the more toqure you will get from it, up to a point
where you go to far beyond the resonant pulses.

This is one thing that I like better on the Gen 3, its much eaiser to mess
with this, we only have on tank and to make the runners longer, you could
essentially just make the rubber connectors a bit longer, but you would need
to be on a dyno (preferably an engine dyno) and play with this..

Now to find that intake that was shown in autoweek YEARS ago that had the
dual surg tanks for the GEN 3.   Basically a v6 intake on a V8

Kirk J Doucette
NESHOC President
Stormtrooper-97 White

-----Original Message-----
From: shotimes-admin@autox.team.net [mailto:shotimes-admin@autox.team.net]On
Behalf Of Bruce Malachuk
Sent: Tuesday, August 05, 2003 9:25 PM
To: Eric Keller; shotimes@autox.team.net
Subject: Re: [Shotimes] about the intake

Those are the intake horns that are attached to the short runners. I believe
that the design of them makes it so that all the air is speeded up over the
radius that the air makes. Lon runners bolt up straight to the intake
pleneum.

Bruce
94 Opal Frost MTX
93 Black ATX - winter beater then parts car :-)

----- Original Message -----
From: "Eric Keller" <unterhausen@yahoo.com>
To: <shotimes@autox.team.net>
Sent: Tuesday, August 05, 2003 8:37 PM
Subject: [Shotimes] about the intake


> All this talk about porting intakes has me bothered
> about one detail.  When I took off the crossover tube
> on the DIS side for the first time, it bothered me a
> lot to see that the long runners were extended into
> the center of the intake.  Do all Gen 1/2 have these
> extensions?
>
> Now, when I was but an undergrad, the mechanical
> engineering department had this experiment involving a
> 2 cycle gas engine with rubber hoses for an intake.
> You were supposed to find out which rubber hose made
> the engine run best.  None of them made any
> difference, because they never tuned the motor.  But
> in class they explained that the intake length
> determines its resonant frequency, and you want to
> match that to the speed you are interested in.
>
> So when I looked into the intake and saw those pieces
> of tubing sticking into the middle, I assumed that
> they couldn't figure out how to make the long runners
> long enough to work at low rpm's and lengthened them
> with the tube inside the plenum.  But, it seems like
> they would really make a mess out of the airflow,
> dwarfing the effect of any mismatch between the heads
> and the intake.
>
> Any thoughts?  Barring that, any comments?
> Eric
>
>
>
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