There are two styles of intake manifolds for the Weber DCOE's. One is the short
style and the other is a version that has a step that raises the carbs up
higher. The one with the step causes the rear carb to hit the strut. So, it
needs to be removed or altered. The short version is the one to get cause it
allows you to continue using the strut. One other consideration...will the
DCOE's interfere with the master cylinders on a left hand drive Alpine? My
Harrington is RHD and has the DCOE's, so no problem. But, I was always under
the impression that this caused a problem for the LHD cars. Can anyone verify
this? Jay Laifman....Didn't we discuss this once?
The throttle linkage is very simple. The original linkage connects to a rod
that mounts to the top of the intake manifold in two places. this rod has three
adjustable arms. One that goes to each carb, and another that attaches to the
original linkage rod from the accelerator pedal. I can send you pics if you
want. - Ian
Oh yah....I forgot to mention. Someone at one time had an intake manifold that
mounted a single DCOE to the Alpine engine. Maybe this would be a nice
alternative for you. Anyone have any of these three different styles of intakes
for sale?
david_kelly(at)ici.com wrote:
> After a reasonably successful season rallying my Alpine I am looking for
> ways of improving performance without turning it into an 'Alger' as this
> would not pass the regulations. Handling is excellent but I lose out on
> acceleration to more powerful cars.
>
> I already run the larger 1725 cc engine on the original Zenith Carbs. I am
> looking into fitting a pair of Weber carburettors as a replacement but have
> only seen this done on Series V and the diagonal bracing strut under the
> bonnet had to be modified to allow the carbs to fit and even then the air
> filter was squashed against the inner wing.
>
> I made some rough measurements that the distance from the manifold to the
> end of the ram pipes was 24cm for the Weber Carbs and measuring under the
> bonnet suggested I wouldn't have a similar problem. Is the under bonnet
> area the same in all models or are the diagonal bracings different? Has
> anyone fitted Webers on a Series II ?
>
> Also how is the throttle linkage attached to the existing arrangement?
> Any photographs / drawings would be much appreciated
>
> Dave Kelly
> 1962 SII
>
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-- Ian Spencer <www.sunbeamalpine.org> '61 Harrington Alpine B9104782 OD HRO '62 Harrington Le Mans BH9115930 OD LRX
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