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Re: [Mgs] Replacing Catalytic Converter

To: <>, <>
Subject: Re: [Mgs] Replacing Catalytic Converter
From: "Christian, Skip" <>
Date: Mon, 9 Jun 2008 13:11:04 -0400

        Check the Moss catalogue for exhaust down-pipe for a '75 B.  The
'75s and, I believe '76s did not come with cats.  Make sure the rest of
your exhaust is compatible with the '75 down-pipe (check part numbers).
If your not sure about the compatibility, ask Kelvin.
        Recommend, if you're so inclined, that you install the twin HS4
setup with separate intake & exhaust manifolds.  I did this on my old
'78 and there was a substantial low RPM power increase.  Not much
increase at high RPMs which, I believe, is due to the single carb cam
(if I'm wrong about the cam, please correct).

Good Luck, Skip '74 B

Original Message
Date: Wed, 4 Jun 2008 11:07:49 -0700 (PDT)
From: Dan DiBiase <>
Subject: [Mgs] Replacing Catalytic Converter
To:, MG List <>
Message-ID: <>
Content-Type: text/plain; charset="us-ascii"

Anyone replace their cat con with a piece of pipe on their '75 and newer
B? I want to dump mine - don't need it here with historic registration -
and am wondering what others have done. I guess I could simply hollow it
out but I'm not sure if there is anything hazardous inside that I need
be careful with..... I recall seeing 'test pipes' on eBay from time to
time. I guess I could also go to a local muffler shop with the cat and
they could make up something...

 Dan D
Central NJ USA
'76 MGB Tourer - Driver - Engine Surgery In Progress...
'65 MGB Tourer Project - Yep, Still Is....
NAMGBR #5-2328
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