In theory a spacer adds volume to the intake which can have a tuning effect on
the air velocity entering the engine. On the 318/360 magnum you already have a
huge plenum and the spacer doesn't have enough volume to have an effect. The
4.0 Jeep engine I believe still uses a log style manifold so a spacer could be
more effective. In the carburator world they are very common and do make a
difference to someone trying to squeeze the last couple of horsepower out of an
engine.
Dave Clement
99 SLT+ CC 4x4
In article <000001c5fb61$f3702660$7900a8c0@highland>, rascal@scrtc.com ("Rick
Barnes") writes:
>
>
> How do you know it works? Did is "seem" to run better after installing one?
> There is not one set of valid dyno results that have ever shown any
> improvement. Just moving the tb further from the intake makes no logical
> sense...why not mount the tb like 6 inches above the intake to get a really
> dramatic effect....sorry, but I remain a skeptic.
>
> Rascl
>
> -----Original Message-----
> From: owner-dakota-truck@bent.twistedbits.net
> [mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Michael
> Maskalans
> Sent: Wednesday, December 07, 2005 12:40 PM
> To: dakota-truck@dakota-truck.net
> Subject: Re: DML: RE: Throttle body spacer
>
>
> On Fri, 17 Jun 2005, Rick Barnes wrote:
>
> > > -----Original Message-----
> > > From: dean_ocque@yahoo.com
> > > Sent: Friday, June 17, 2005 9:29 AM
> > >
> > > I am assuming an engine is an engine in most cases. I am looking at
> > > getting a throttle body spacer for my TJ. I have heard conflicting
> > > reports on them. Some say it screws up the computer, others say it
> > > works great and adds a few more horse power, and better miles per
> > > gallon. The reason I asking is because my four banger needs a bit more
> > > power on road.
> >
> >
> > The spacer will do absolutely nothing for you.
> >
> > Rascal
> >
>
> Another message I'd meant to reply to and never did...
>
> the list's wisdom has always been that TB spacers do absolutely nothing
> for the 318/360, but the Jeep 4.0L does actually respond very favorably to
> a TB spacer. On a multiport fuel injected motor it really shouldn't, but
> apparently it does. Whether the Iron Duke is more like the 4.0L or more
> like the 5.2/5.9L, I don't know.
> --
> MikeM
>
>
>
>
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