The coated will not decay from rust and will look nice and more
importantly, the ceramic coated will flow better because they keep the
gases from cooling as much. cooling gases decelorate and cause back
pressure. I really don't have a grasp on why this is. The math behind
gases in motion is slippery stuff; to me anyway. but it is true from a
overall flow perspective that keeping the gases hot keeps them flowing
faster; related to the fact that cooling gasses reduce pressures by
shrinking and reduced pressure makes it decelorate and get in the way of
the exhaust behind it that hasn't cooled and is still trying to zip
along. Now my brain tells me that the shrinking should balance this out
by making more room or something, but my brain is wrong on the point and
the math is right from what I gather.
Most importantly on a dak i think is the fact that the ceramic coating
would keep the engine compartment cooler by keeping the heat inside the
tube to a larger degree.
Marty
Jayson Woodruff wrote:
>
> All right, what's the big difference between coated and standard?
>
> Jay W
>
> bernd@texas.net wrote:
>
> > Confirmed with JBA...yes, they DO fit the 2001 models. They are available,
> > $470 for ceramic coated ($360 for standard) and the turn around time is
> > approximately 3-5 days on standard version and 7-10 days for the ceramic coated.
> >
> > - Bernd
> >
> > >
> > > Those were the Borla headers. JBA doesn't like to release headers
> > > unless there's at least 10HP to be made. I'm requesting the dyno sheet
> > > as well.
> > >
> > > There's a similar situation with the F150 SVT's...the "other brand"
> > > headers made almost no difference...JBA has proof (and another truck
> > > magazine backed it up) with close to 30RWHP more. I believe Matt is
> > > going to be testing them as well very soon.
> > >
> > > - Bernd
> > >
> > > -----Original Message-----
> > > From: owner-dakota-truck@BUFFNET.NET
> > > [mailto:owner-dakota-truck@BUFFNET.NET] On Behalf Of Josh Stolarz
> > > Sent: Thursday, June 21, 2001 6:10 AM
> > > To: dakota-truck-moderator@bent.twistedbits.net
> > > Subject: Re: DML: Jet Chips/JBA Headers
> > >
> > >
> > > Just have to be careful with stating numbers for the 4.7. Someone
> > > already put on 4.7 headers (signman?) and found they did absolutely
> > > nothing. If JBA does state the numbers, just make sure they can produce
> > > a dyno sheet to back it....
> > >
> > > Josh
> > >
> > >
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