Exhaust Mod

["Korolyshyn, Dan Mr. DAC DPW ENGR RESOURCE MGMT BR" <Dan.Korolyshyn@xxxxxxxxxxxxxxxxxxxx>]

Nils, I would not remove the "restrictor" on the front section
as I was once told at an Alfa tech session that it is designed
to produce a certain amount of back pressure for optimum performance
throughout the RPM band, on the other issue, I have used the ANSA twin
tip rear section on my Spider but after calculationg the cross sectional
area of the twin tips, I found them to be less than the cross 
sectional area of the single pipe, so I am not sure how that can be
of any value for free flow.  I now have the Stainless Steel straight
pipe from Stebro and it is fantastic with a highly polished end tip
that sounds absolutely GREAT!
Ciao,
Dan K.


Date: Thu, 7 Aug 2003 20:12:09 -0700
From: "Nils Huehnergarth" <nils@domain.elided>
Subject: Exhaust Mod

Hi All:

I'm planning to make a change on the stock exhaust system of my 1974 GTV,
and I'm interested in opinions about the rear and forward exhaust sections.
I do not have any need to pass smog inspection. I plan to keep the stock
headers and install a new Ansa center muffler.

I am considering a straight pipe on the rear section, and having the
'restrictor' removed from the front section. Is there a compelling reason
not to remove the 'restrictor' from the front section and replace with
straight pipe?

Also, I'm debating between and Ansa rear muffler and a straight pipe.

Thanks,

Nils Huehnergarth
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