Ray,
I used a (real) Dr. Gas Exhaust on both the T'Bird and now the Merkur.
It's what I prefer and you can tell it by its sound over a conventional
H Pipe system. A lot of NASCAR Teams use it also but there are a lot of
knock-offs that look similar. Not all NASCAR teams agree as to the value
and that's why not everybody uses them as they do stepped headers. I
think it may be because of the knock-offs being confused for the real
thing. When I look at the knockoffs I see a lot of crude "engineering"
that strays from the real "X" pipe. Anyway if you see Boyd, say Howdy
for me.
Grib
"Do what others Won't and you'll do what others Can't for the rest of
your life"
-----Original Message-----
From: owner-land-speed@autox.team.net
[mailto:owner-land-speed@autox.team.net] On Behalf Of Ray Buck
Sent: Sunday, March 07, 2004 11:24 PM
To: W S Potter; land-speed@autox.team.net
Subject: Re: Stepped Headers
At 06:12 PM 03/07/2004, W S Potter wrote:
>We have a local guy, specializes in exhaust systems, "Doc Gas",
Boyd Butler. I have one of his X pipes on my El Camino. My son dated
his
daughter for years. Very interesting man. Very heavy into the
scientific
analysis of fluid dynamics.
Ray
>He changed
>the sound of Daytona for NASCAR with his crossover pipe. Interesting
how
>many now use it. He takes a very scientific approach to exhausts and
is one
>of the top people in the field. He describes the exhaust going through
the
>tubing as a series of "eggs" being forced through the pipes. That
gives
>something to think about. I have not been able to contact a couple of
the
>local racers who have worked for and with him on exhausts but I'll be
>interested in their responses when I do. I'll pass along anything
>interesting on the subject.
>
>Wes
>
>on 3/7/04 11:23 AM, Dave Dahlgren at ddahlgren@snet.net wrote:
>
> > I have never bought into the back pressure theory making things
better. I
> > will buy into having too much exhaust cam though or the wrong lobe
> > separation for the cylinder head. It is the reason many new cars
have
> > variable cam timing as standard equiptment.
> > I do believe though that when talking about torque whoever has the
greatest
> > area under the curve in the rpm range that the gearbox is set up
for, has
> > the fastest car.
> > Dave
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