Phil,
One thing that you have to remember is that yes while the P car has 40 mm
carbs, it has a smaller choke (venturi) size. Both DCOE and IDA carbs have
replaceable chokes as one of the calibrated settings. So it's not a case of a
1/3 of a liter cylinder being feed by a 40 mm carb, it is more likely a 1/3 of
a liter being feed by a 28 or perhaps 32 mm carb (choke).
The other problem we face is four cylinders and only 5 head ports. The p car
has 6 cylinders and if my memory is correct 12 ports. IMHO you can only push
so much gas thru 5 ports.
Rick Ewald
In a message dated 2/28/99 4:38:04 AM SA Eastern Standard Time, jello@ida.net
writes:
> I recently bought a '69 Porsche 911T targa. This car has a 2.0 litre
> six with a compression ratio of 8.6:1, and 110 hp (S versions have 160
> hp and 10:1 compression). Now, this is a little more than an MGB, and a
> little larger engine (but lower compression). The interesting thing is
> that even the 110 hp car has 2 triple (40 mm) throat webers - i.e. 6
> carbs. When I compare to the MG's 2 carbs of 1 1/2" (about 40mm) I have
> to think the Porsche is at least a little overcarburated. I wonder how
> much more effective three SU's with a special intake manifold would be
> than the webers - of course I know it would take a lot of needle
> selection etc, but the idea is interesting. I don't really plan to do
> it, just dreaming.
>
> Any thoughts??
>
> Phil Bates
> four British cars
> one German car in british car clothing
> one German car
> one Japanese car
> two French cars
> planning to cut down to a total of seven cars from only three countries
>
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