One of the reasons I decided to go with a single Weber DGV on my 80 B was
that I was informed that unless I was changing the camshaft as well, there
wasn't much reason to have the dual carbs.
I've since decided that I'm not happy with the performance, and will go to
the dual SU setup, but will be pulling the engine for a complete overhaul
also, so changing the camshaft is a non-issue at that point!
So, I'm now curious as to how much difference I might see by going to the
dual SU's, all else (cam, disty, pistons, etc) being the same?
--
-----------------------------------------------------------
Marc Siegel, Charm Net, LLC. eMail: smarc@abs.net
Baltimore, MD http://www.charm.net voice: 410/361-8160
-----Original Message-----
From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net]On Behalf Of
Barney Gaylord
Sent: Wednesday, August 28, 2002 10:02 AM
To: Taylor, Todd S; 'mgs@autox.team.net'
Subject: Re: 70 carbs on a 80 B..
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
/// or try http://www.team.net/cgi-bin/majorcool
/// Archives at http://www.team.net/archive
|