[Healeys] Carbs on heritage cert

[John Harper]

Larry

This is a downdraft Zenith single carburettor as fitted to A70s. I had 
one on an A-H engine for some time when I ran a 100 engine in an A70 
Hereford. One has to use an A70 inlet and exhaust manifold; plus a 
mixture of pipes etc. I had a standard A70 air cleaner above the engine 
but that would not fit under a 100 bonnet!  I kept the normal A70 
mechanical camshaft driven fuel pump.

I can guess that perhaps this was for fuel economy or SU supply problems 
but as I say I am guessing.

Interestingly when I eventually changed over to twin SUs I noticed very 
little difference in overall performance but perhaps just a little 
better pull at high revs as you might expect. However I did expect a 
better improvement than I actually got so was a little disappointed.

Regards

>Guys
>Anyone heard of this before? It's new to me!
>"A quick note to pick your brains..... I have just got the Heritage
>Certificate through for my BN1 and it states that it was fitted with 42
>V1 S carburettors???? Have you heard of these???? is it just another
>terminology for the standard SU Carbs???"
>Help appreciated
>Cheers
>Larry Varley
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-- 
John Harper