Like Bill J says, the systems I have seen are all suck through systems, so
In theory you can use a stock HS4.
Cheers
Tim
Trevor Boicey wrote:
> "T. .R. Dafforn" wrote:
> > a Triumph herald (spit engine) and vitesse (GT6 engine) with a
> > supercharger. I think that the initial price tag of 1200 pounds can be
> > cut drastically.
> > The way I see it you need.
> > 1) HS4 carburetter (got 2 of these already)
>
> ...the carb is likely not the same carb you already
> have.
>
> Supercharge applications often require a slightly
> different carb that has the float bowl pressurized
> by the supercharger.
>
> When a normal engine is running, the vacuum created
> by the carb venturi is what "sucks" the fuel through
> the jet. Of course what actually happens is that the
> atmospheric pressure in the float bowl "pushes" the
> fuel through the jet.
>
> (the same way the atmosphere pushes the soda pop into
> your mouth when you create a vacuum with a straw)
>
> If the air in the intake is pressurized by the
> supercharger, even the "lower pressure area" at
> the jet is still above atmosphere, and fuel will
> not be delivered.
>
> The later MG Metro Turbo cars used a turbocharged
> A-series, basically the same as the pre-1500 Midgets. They
> had a single carb but it was airproof, had threaded
> fittings everywhere that were sealed, and the breather
> was tied to the turbo output.
>
> --
> Trevor Boicey, P. Eng.
> Ottawa, Canada, tboicey@brit.ca
> ICQ #17432933 http://www.brit.ca/~tboicey/
> "The Shuttlecock! Where's the Shuttlecock!" - Alec Baldwin
--
Tim Dafforn
Structural Medicine
Department of Haematology
CIMR
University of Cambridge
Wellcome-MRC Building (Level6)
Hills Road
Cambridge
CB2 2XY
Tel. (01223) 336829
Fax. (01223) 336827
http://smokeroom.cimr.cam.ac.uk/
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