My answer for your first question. You can use Lotus
type seals between carb and manifold. They are one
1/4 inch thick nylon type plastic spacer with an O-ring
on each side. They are available for different diameters.
To insulate from vibrations you use 1/2 thick rubber
washers (there are different types available with or
without a "waist" in the middle), a steel washer and a
nylock nut to hold the carbs to the manifold. Dont
overtight the nuts as they should only hold the carb
tight enough to seal against the O-rings. Some make
these washers from a thick wall silicon hose with 5/16
inch inner diameter. The rubber insulators or Pirelli joints
as we call them here in Europe are quite expensive
and dont last as long as the Lotus type seals.
Question number 2.
I think it's the same as for Weber carbs. 4 to 4.5 psi.
I would change to an electric pump instead. It would
be too bad if your fuel pressure drops on high rpm.
There aremseveral types available. I have used Facet
(Bendix) blue top pumps in the past, together with a
Malpassi Filter King pressure regulator/filter. Dont know
if they still make these. The pump was some kind of piston type.
Thomas
bob_wilson@agilent.com wrote:
> Hi List,
>
> I am making a stroker from my '70 1600 engine. I have new 40mm solex carbs
> and the appropriate manifold that fits them to my 1600 engine (which now has
> the new crank and connecting rods to make it a stroker).
>
> Questions:
>
> 1) Bakelite Spacer between Solex and Manifold needed?
> Do I need a spacer (bakelite?) between the carbs and the intake manifold?
> On my SU's there are spacers that are about 5/8" thick or so. The studs on
> the manifold for the Solex's are long enough to allow a spacer and I
> wondered if I should put them there for some reason?
>
> 2) What is Fuel Pressure?
> The Solex manual says that the fuel pump pressure needs to be within a
> range. Does anyone know what the fuel pressure is for our fuel pumps (I am
> using the same fuel pump that came on my '70 1600 engine, with a new
> diaphram).
>
> Any help would be appreciated.
>
> Thanks,
>
> Bob Wilson
> 1970 1600 (stroker soon) s/n 28383
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