Kelvin,
Are you describing a manifold that uses two Webers but only one 'barrel' of
each one? So the spacing of the barrels of the carburators are equivalent
to the spacing of the head intakes?
I was conceving some odd mess of tubing that would merge the four Weber
'barrels' into two that would bolt to the MGB head.
Larry
> -----Original Message-----
> From: owner-mgs@autox.team.net
> [mailto:owner-mgs@autox.team.net] On Behalf Of Dodd, Kelvin
> Sent: Monday, January 12, 2004 11:04 AM
> To: Larry list account; MG List
> Subject: RE: Hardened Valve Seats/now Dual Weber
>
>
> Larry:
>
> Actually there would be some advantage, particularily during
> transition. Moss UK does have a twin Weber DCOE manifold for
> the B series, and I did own one for a number of years, but
> never used it. Some lucky so and so bought it from me at the
> Pasadena MG swap meet after I decided to go with a cross flow
> head (still not installed either).
>
> The twin manifold allows the Weber accelerator pump jet to
> fire straight into the intake port, rather than slinging into
> the wall of the manifold. This should improve low speed
> transition, and the straighter and shorter intake tract
> should improve top end. I figured you could use less accel.
> pump shot and get away with bigger venturi's and still have
> good low end and transition.
>
> I doubt if it would be much better than the twin SUs for
> street driving, but it seemed an interesting thing to play
> with. The cross flow head knocked the project out of the
> water though, as it is a real step forward rather than a skip
> sideways.
>
> Then the supercharger came out, and I'm trying to come up
> with the time to get that installed.
>
> Getting closer though. My workshop is up and the yard looks
> like the battlefields of Flanders with trenches
> criss-crossing the place. All it needs are a few machine gun
> nests to get the full effect. We have to cross two bridges
> just to get to the house!
>
> Finally the MGC GT, 65 MGB race car, 58 Magnette, 66 Jag
> 3.8S, 79 MGB, Rover Sd1 and wrecked Mazda Miata have a place
> out of sun and rain. Now if I can just get time to hook up
> lights etc.....
>
> all the best
>
> Kelvin.
>
>
> > -----Original Message-----
> > From: owner-mgs@autox.team.net [mailto:owner-mgs@autox.team.net]On
> > Behalf Of Larry list account
> > Sent: Saturday, January 10, 2004 3:38 PM
> > To: 'MG List'
> > Subject: RE: Hardened Valve Seats
> >
> >
> > > Are you saying that you cannot attach dual sidedraft Webers
> > > to a regular iron 1800 head? I seriously doubt that
> > > contention -- I can recall seeing that setup many years
> > > before the crossflow heads were available.
> >
> > Max, the answer to your question is, "Yes". Two side draught
> > Webers have
> > four barrels. There are only two intake ports on the B head.
> > Even if you
> > could fabricate a manifold there probably wouldn't be any
> advantage.
> >
> > Larry Hoy
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