[Mgs] FW: exhaust Q

Dodd, Kelvin doddk at mossmotors.com
Thu Aug 2 11:19:48 MDT 2007


Steve:

The factory special tuning manual recomends removing the middle muffler
for fast road use where noise is not an issue.

Usually back pressure isn't an issue until you start running open
headers or severely shortened systems.


Kelvin Dodd


> -----Original Message-----
> From: mgs-bounces+doddk=mossmotors.com at autox.team.net [mailto:mgs-
> bounces+doddk=mossmotors.com at autox.team.net] On Behalf Of Steve
Johnson
> Sent: Thursday, August 02, 2007 6:51 AM
> To: mgs at autox.team.net
> Subject: [Mgs] FW: exhaust Q
>
> ******************************************************
>
>
>
>
> Greetings:
>
>
>
> I finally replaced my 1973 MGB muffler with one from Moss. I replaced
> the rear muffler as I thought there as a baffle out. It turns out the
> front muffler (? resonator) was a mess. In, fact, I believe it was a
> Chrysler product and certainly did not fit properly. At that point, I
> chose to totally remove the front muffler and run a straight pipe to
the
> rear (now only) muffler. It runs nice, has a nice little rumble and I
am
> pleased. After tooling around I started thinking (of course after
> welding in the pipe) that these four cylinders tend to like back
> pressure (I can near stall it out by covering the tail pipe as it is).
> Does anyone think there may be a problem with what I did or do I need
to
> make some further adjustments as a result of what I did?
>
>
>
> Thanks
>
> Steve Johnson in rainy Maine


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