If you were to cut the stubs off the exhaust and open the area, fit and weld
two more pipes identical to the original pipes on the left would this give
it more or less power and what would it sound like. Just a thought. I am
getting itchy for something to modify on mine!
Please reply to Robert L. Gannon at trsix74@Home.com or trsix74@Yahoo.com
TR6 1974 CF22956U
TR3A 1960 TS70951L
----- Original Message -----
From: <rrt@connectexpress.com>
To: <6pack@autox.team.net>
Sent: Tuesday, January 09, 2001 5:22 PM
Subject: Exhausts & 6 Pack Digest V1 #248
> Boy, how this list has developed! I just finished reading Digest #248 and
> couldn't believe the number of messages and replies. Keep it up,
everyone!
>
> My two cents worth on exhausts:
> First, the quality or sound of the "original" muffler depends on the
> manufacturer. If you look closely at different cars at a show, you will
see
> mufflers that are all similar, yet different. Some with quite big
tailpipes,
> others with smaller pipes. Some appear to have little stubs of pipes on
the
> back of the muffler, opposite from the tailpipes, while others do not. I
> haven't cut open any original mufflers, but I suspect that the internals
vary
> quite a bit, as well. Some are probably noticably more free flowing than
others.
> I agree that a single pipe header will likely produce more power than
the
> dual headers commonly available. That is because of the superior
scavaging of
> the "six into one" design. However, I think that a dual header setup
could
> have the mid-range power boosted noticably by adding an "H" pipe or
balance
> pipe between the pipes, directly behind the headers. V-8 performance
exhaust
> systems have incorporated H pipes for many years with good results. In
fact,
> if you look inside the later TR6 stock dual manifold, you will find a port
> communicating between the front three cylinders and the rear three. This
> allows the dual pipe system to still have the scavaging benefits of the
"all-
> into-one" earlier system, yet have the lower restriction of the two pipe
system.
> I think that the smoother pipes that the stainless systems keep over
time
> will probably mean that the performance and sound of a new stainless steel
> system stays much longer than a mild steel system. The rough, rusted pipe
> surfaces of a mild steel system just have to effect the flow performance
of the
> pipes. I'm considering different exhaust systems for my "six". When I
make
> decision, I'll report in for comments.
>
> Rex Townsend
>
>
>
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