Re: Dent in down pipe on a 16V

[Bill.Scarince@tenneco-automotive.com]

The "dent" is what we exhaust guys call a "flat".  After the pipe has been bent
to the proper shape, it gets placed in a "flat press" and the flat spot is
created according to the product design prints.  This is common when we have a
deep, small radius axle bend and the application requires extra clearance, or
for when you need to squeeze past a swaybar or a fuel tank.  This is less common
on our Dynomax product line since the customer is so sensitive to performance
factors, but in most applications you will never be able to tell the difference
between a pipe w/the flat and one without.

Bill Scarince





"David & Michelle Barwick" <dbarwick@sprynet.com> on 02/10/2000 12:17:42 PM

To:   scirocco-l@scirocco.org
cc:    (bcc: Bill Scarince/US/TA.NA)
Subject:  Dent in down pipe on a 16V




>From: Vaughn8v@aol.com
>Subject: even MORE font end noise!!
>
>Well........
>Okay, it must be the time of year for Scirocco's with front end noise.
>So, my car has     ****SNIP***
>But after climbing underneath the car
>the other day, I discovered that the exhaust hook that the hanger suspends
>right about the catalytic converter is busted from the exhaust pipe...  and
>there is a dent on the underneath of the downpipe right above the
>swaybar.....   aaaha!!!

I've got a dent in a similar location.  Is it very close to where the down
pipe makes the right angle turn to go straight out under the car?  If this
isn't supposed to be there, I imagine my tuned exhaust is not as effective
anymore.

Any knowledgeable listers have some input on the dent?

David Barwick
Black '88 Scirocco
Anthracite '84 GLI
Eugene, OR


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