SCCA racing required the original carbs. FIA in Europe allowed homologated
Weber use. Nowadays vintage racing clubs get ticklish on this subject.
My vintage MGB has the FIA approved 45DCOE on a period Derrington manifold.
The car is a replica of the FIA approved Sebring car, so the vintage race
tech nazis tend to leave it alone. I have seen Midgets with 40DCOE carbs
hassled because the FIA approved a 45DCOE not the 40DCOE. (silly)
I had a twin weber DCOE manifold for an MGB. It seemed like a good
idea mainly because the accelerator pumps fire straight down the inlet
tracts rather than spraying the sides of the manifold. I figured I could
run larger chokes and still get good low end atomisation and mixture spread.
Special Tuning in the UK still sells the manifold. I sold mine to Bud
Sheldon when I bought a cross flow head. I did not have enough spare Webers
to do both.
But then i'm a Weber kid. Always wanted one, never could afford it.
I'm looking forward to sticking two on a head. Voobah Voobah Who cares if
an SU works better. If i wanted efficiency I'd be driving a Toyota.
The Marina with twin webers noted earlier may have been one of the
Factory rally cars. I know that a 1.3L cars were run with the 8 port x flow
head offered by Special Tuning. I think that I once saw a picture of a 1.8L
x flow head on a Marina rally car with twin webers. I do have a picture in
front of me of the 1.8L car built for the '74 US rally team. It ran a
single 45DCOE. The car DNF both events entered with a broken gearbox.
Kelvin.
> -----Original Message-----
> From: Fred Talmadge [mailto:fredtal@phoenix.net]
> Sent: Monday, March 22, 1999 4:31 PM
> To: Paul Garside; 'british-cars@autox.team.net'
> Subject: Re: webers on B
>
>
> I remember Huffaker's (king of Northern California MG racing
> in the days of
> B's and Midgets) and they used SU's and later Strombergs.
> Maybe is was a
> factory dictate or the rules of the day, I'm not sure.
>
> Fred Talmadge
> 1961 Elva Courier
> <http://www.phoenix.net/~fredtal/elva.html>
>
>
> At 01:02 PM 3/22/99 -0000, Paul Garside wrote:
> >
> >I never quite understood why they did that on 'A' series
> engines - I assumed
> >to get the chokes closer to each other, so they lined up
> with the siamesed
> >intake ports? I don't know if you have to do that on an 1800
> B series, where
> >the ports must be further apart.
> >
> >I talked to the most successful exponent of B racing in this
> country from
> >when the B was a current sports car. He has tried both
> Webers and 2 inch SUs
> >on his car and had plumped for the latter. He felt the
> Webers gave you a bit
> >more at the top end, but the SUs were better for torque.
> >
> >I don't see why the SUs should be difficult to set up on a
> race car. Half an
> >hour on a rolling road with a box full of needles should do
> it! (Assuming
> >the carbs are in good condition, of course).
> >
> >Paul
> >
> >
>
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