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Re: 70 carbs on a 80 B..

To: "Taylor, Todd S" <todd.s.taylor@lmco.com>,
Subject: Re: 70 carbs on a 80 B..
From: Barney Gaylord <barneymg@ntsource.com>
Date: Wed, 28 Aug 2002 09:01:41 -0500
At 08:17 AM 8/28/02 -0400, Taylor, Todd S wrote:
>Has anybody ever installed 70 B carbs (dual SU's ) on a 80 B???  ....

Yes.  Well actually it was a 76 B, but prretty much the same.  Got the full 
tech session with 64 photos and notes right here:
http://www.chicagolandmgclub.com/photos/carbswap_zs2su

>If so, what do you need??  Carbs, manifold anything else that has to be 
>changed????

Complete carburetor set, manual choke cable, heat shield, intake and 
exhaust manifolds, and the exhaust head pipe from the earlier car, and a 
few other small bits.  If you use the late model distributor the vacuum has 
to be tapped from the intake manifold, not from the carbutor.  If you 
change to the earlier distributor (recommended) the vacuum gets tapped from 
the venturi on the rear carburetor.

>Anybody have a 70 - 71 SU carb set and a manifold for sale??

Not I, but keep asking.  The whole conversion set pops up occasionally 
after someone converts to a cross flow head (or a side draft Weber and 
headers).

>Do you have to change the exhaust manifold too????

Yup.

>Or am I better off using a single webber?

No way.  The single Weber downdraft carb might be considered an upgrade 
from the single Z-S carb, especially if you toss the catalytic converter 
and the restrictive exhaust manifold in the process.  But the twin SU's 
have a good edge over any of them.

Barney Gaylord
1958 MGA with an attitude
http://www.ntsource.com/~barneymg

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