The ridges are for part-throttle fuel economy, they produce a higher vacuum
signal from tip in and help accellerate the air before you go to wide open.
Unfortunately, they also cause a restriction. One of the biggest
improvements is thinning the throttle shaft also. And actually, it makes it
quieter when you remove the ridges.
Mark Kuzia
flyboy01@mediaone.net
http://people.mw.mediaone.net/flyboy01/home.html
1995 Dakota 13.79 @ 102.45 mph
360ci, 5-spd, 4.11 LS(8 3/4 coming soon), Cowl-induction
(A new E-body 8 3/4 [3.90 SG] has been built by Reider Racing)
----- Original Message -----
From: "Tod Oace" <tod@quay.com>
To: <dakota-truck@buffnet.net>
Sent: Wednesday, January 17, 2001 2:27 AM
Subject: Re: DML: RE: TB modifications
> So I have a question... If smoothing out the throttle body makes such a
> good difference, how come they don't come that way out of the factory? I
> can understand it being too expensive to produce them with an ultra smooth
> finish, but couldn't they make 'em closer to what we're doing to them?
What
> are those ridges supposed to do anyway? Someone said they are
> over-engineered... For strength I assume? Or for sound baffling? More
> like Tod baffling...I can't figure it out. Is there some risk in taking
> them out?
>
> Anyway, this mod sounds like something I want to try.
>
> This list sure is expensive... I wasn't planning on doing any mods. Now
I
> have a growing list of them...and I don't even *have* a Dakota yet!
Twenty
> days since my order...and counting.... -Tod
>
>
>
> ----- Original Message -----
> From: "Mike Styer" <dakotamike@netzero.net>
> To: <dakota-truck@buffnet.net>
> Sent: Tuesday, January 16, 2001 8:56 PM
> Subject: Re: DML: RE: TB modifications
>
>
> > oh, encouragement is my wallets worst enemy :)
> >
> > Mike S.
> >
> > The Man From Utopia wrote:
> >
> > > > Hey everybody,
> > > >
> > > > Has anybody done they're own tb mods?
> > >
> > > I did! I did!
> > >
> > > > I want to clean take those ridges off of the top, thin the blades
and
> > > shafts, and polish the holes...
> > > >
> > > > This will be my first big job with the Dremel (xmas present:). What
> > > > attachment should I use to remove the ridges?
> > >
> > > A hacksaw to remove those big nasty things at the top of the TB
(except
> > > maybe the one that supports the S-bolt), file the rest down flat. Or
if
> you
> > > really want to give the Dremel a work out use the cutting wheels(gonna
> need
> > > lots of those). Use the carbide tipped stuff to do the rough work,
then
> > > switch to the sandpaper wheels to smooth things out. DO not go below
the
> > > butterfly's..
> > >
> > > > And how much of an improvement is this mod? Can I feel it somewhere
> in
> > > the power band, or what?
> > >
> > > Big improvement throughout the band, mostly above 3k...
> > >
> > > Greg
> > > NE# 3779
> > > 2K1 Neon ES
> > > Rahway NJ
> > > ICQ: 283886
> > > http://24.6.89.18/neon
> >
> >
> > Shop online without a credit card
> > http://www.rocketcash.com
> > RocketCash, a NetZero subsidiary
> >
>
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