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Date: Wed, 27 Aug 2003 14:44:49 -0500
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Sound is correctness of free flow of operation and also intimidation to win!
Jim Knox, 91 Dak
----- Original Message -----
From: <jon@dakota-truck.net>
To: <dakota-truck-moderator@bent.twistedbits.net>
Sent: Sunday, August 24, 2003 5:59 PM
Subject: Re: DML: Intake sound?
>
> "Mallett, Donald B" <Donald.Mallett@bnsf.com> wrote:
>
> : Jon, Took a look at your 4.7L intake set up at
> : http://www.steigerperformance.com/products/pics/big.sp01102a.jpg. I like
it.
> : I was wondering dose having the stock hat, with the baffles chambers,
sound
> : any different then having a bent pipe in its place? I've been toying
with
> : the idea of rebuilding my intake to include the stock hat if it help to
tone
> : down the sound. Its been a while since this topic has been touched on,
What
> : the purpose of the chambers in the stock hat,?
> : Thank you all & have a nice day!
>
>
> Don,
>
> I haven't heard a 4.7 with the tube all the way to the throttle body,
> so unfortunately I'm not too much help as far as the sound differences.
> When I was prototyping my intake kit, we did run the engine with nothing
> at all attached to the throttle body just for grins, and it was louder.
> I don't recall all the details now but I remember thinking that the
> stock plenum did civilize the engine sound a bit.
>
> As far as my intake goes, after looking at the stock plenum I
> decided that the additional expense and trouble to run a tube
> directly to the throttle body wasn't worth it. The plenum isn't
> very restrictive, so I took an "if its not broke, don't fix it"
> tack. Plus, I can maintain the benefits of the factory engineers'
> efforts to control the sound while keeping the price of the end
> product down. Plus, the engine looks better with the penum in
> place, IMHO. :-)
>
> This isn't to say that there aren't gains to be made by running a
> tube directly to the throttle body, and I am certainly not discouraging
> anyone to use such an intake on their own truck. I do suspect such gains
> would be fairly small, but it wouldn't surprise me at all if there were
> some gains to be had. The above is just my personal thought process and
> the reasoning behind retaining the stock plenum with my intake.
>
> BTW, the inside of that plenum actually is a nice smooth tube,
> except for a cutout which connects to the plenum baffles. If one
> was handy with a tube of epoxy, It would probably not be very
> difficult to patch a piece of sheet metal over that cutout to
> create a tube with no cutouts at all, which would accomplish
> about the same effect as replacing the plenum with a tube. I'm
> not sure I would want to do that if it were my truck, but if
> someone thought the risk of epoxy or the sheet metal going down the
> throttle body was fairly small, it might be an option...
>
>
>
> --
>
> -Jon-
>
> .---- Jon Steiger ------ jon@dakota-truck.net or
jon@jonsteiger.com ------.
> | I'm the: AOPA, DoD, EAA, NMA, NRA, SPA, USUA. Rec & UL Pilot - SEL
|
> | 70 Cuda, 90 Dak 'vert, 92 Ram 4x4, 96 Dak, 96 Intruder 1400, 96 FireFly
|
> `------------------------------------------
http://www.jonsteiger.com ----'
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