Spica to Carb Conversions

[gbeston@domain.elided (George Beston)]

This conversion should only be undertaken after considering all the
practical and  legal implications.  Like: Will the car really start and run
any better? Will fuel consumption be affected? Would it be easier and
cheaper to fix whatever might be ailing the Spica system?  Does your car
ever need to pass emission inspections??

If you simply can't live any longer without having your Alfa breathe
through carbs, the used part route should be less expensive.  Before going
ahead, understand that it's not just a matter of bolting on a couple of
carburettors and setting them up.  If you have any intention of doing it
the way the factory would, the parts you should have include everything
from the gas pedal on out, including all linkage hardware and springs,
intake manifold, mounting blocks, carbs, air box, air cleaner, support rod,
and thermostat by-pass hose.  Also, on the fuel delivery side, you need to
figure out how to adapt a pressure-regulated line to the carburetors
without messing up the fuel flow of the existing feed and return lines.
Then there are some other details, such as the Spica pump block off plate,
and you'll need to replace one of the front studs that hold the intake
manifold on with a shorter one.

European sources should be able to get the used  hardware you need.  I see
that Chris Sweetapple has already contributied to this string.  Based on my
experience, I would recommend him  as a parts source, but remember that no
supplier from overseas can possibly support the conversion itself.  If you
do proceed with UK/European sources, be careful to ask for the kind of
carbs you want.  You can probably find jets and gasket sets for Weber and
Dellorto, but I have no idea about Solex carbs of this design.  Also, get
the parts from a similar car, the closer in engine size, age and body type,
the better.

If you decide to go ahead, be careful with the removal and storage of all
of the components associated with the SPICA system.  You may want to go
back to it some day!

George Beston
1975 Alfetta (116.33/Dellorto converson!)
1970 Spider 1300 Jr

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