I have triple 45DCOE webers. With 34mm chokes. (34mm is 1.338 inches, and you
get 6 chokes with triple webers).
Do the maths. A 2inch Su is 50.8mm. You can have 2 or 3 of them.
Plus you get almost infinite adjustment with webers.
Triple 45's with 34mm chokes are fine for a road car. Probably 36's too. 38's
on a full serious high rev race engine.
But your definition of road car might be different to mine.
I've never seen triple 40DCOEs on a Healey. The magic barrel dia formula is
choke x 1.25 So a 40mm Dcoe can't be the correct answer, even with 34mm
chokes...
Best
Chris
Sent from my iPhone
> On 5 Dec 2013, at 4:40 pm, Wilko2 <e-wilkins@cox.net> wrote:
>
> I've not even finished building my engine yet (15 years on...)
>
> I was wondering about Weber Carbs for a street driver Healey and about the
> 45DCOE being used for all the kits and such.
>
> Weber recommends a 40 DCOE and supplies them with 32mm chokes for many very
> successful 2 liter cars. That's a 40mm carb with 32mm choke for each 500 cc
> chamber. Why then would a Healey need a 45 with a 35mm choke?
>
> Am I going to be ok for my moderately-built 3 liter Healey using the 40
DCOE
> with 32mm chokes?
>
> Thanks,
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