Don't know about Flow Rate on the tubes...but here the measurements:
K&N Filtercharger Kit for 5.9L Jeep GC: Tube size is 3.25" w/8" Cone
AirAid Intake System for ALL 1997-Up Dakota/Durango: Tube Size is 3.5" w/6
or 8" Cone
A Honda Intake System w/6" Cone (My Setup) 3".
Tells me that the 3-3.5" Tubes are more than adequate.
----- Original Message -----
From: mrdancer <mrdancer@camalott.com>
To: <dakota-truck@buffnet.net>
Sent: Thursday, April 08, 1999 11:36 PM
Subject: Re: DML: 8" cone?
> But you don't address flow RATE. A better measurement would be the volume
> of the cylinders multiplied by engine rpm to calculate the maximum amount
of
> air the engine could pump thru at redline with no intake/exhaust
> restrictions. Your more common bottlenecks would be valve sizes and lift,
> intake runner size, exhaust runner size, and air filter restriction.
> '92 Dak CC 2wd 318 3.55
> '84 GoldWing Interstate
> ----- Original Message -----
> From: <Dak99RT@aol.com>
> To: <dakota-truck@buffnet.net>
> Sent: Thursday, April 08, 1999 11:17 PM
> Subject: Re: DML: 8" cone?
>
>
> > In a message dated 4/8/99 11:24:13 PM Eastern Daylight Time,
> > stei0302@cs.fredonia.edu writes:
> >
> > > One thing to keep in mind is the size of the tube itself. Picture a
> > > 2,000cfm cone at the end of a drinking straw. The extra surface area
> won't
> > > do you a bit of good if you can't get it to the engine at that rate.
I
> > > have no idea if this is actually a problem or not, but its one less
> thing
> > > that I have to worry about with my open element. It might be getting
> warm
> > > air, but at least I know its an unrestricted path from the filter to
> the
> > > TB. (Actually, it isn't warm air due to the ram-air hood...) :-)
> > >
> >
> > A V-8 throttlle body has approximatly 6 square inches of area in the
> > throttle body bores. A K&N cone and the 3" tube it is connected to has
> > approximately 7 square inches... plenty enough to feed a hungry 6 square
> inch
> > throttle body... even a stage2 throttle body. This was something I
forgot
> to
> > mention in my original post about the K&N surface areas and cfms.
> > Charles
>
>
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