Packard Forum Index » Pre-War (1899-1942)

Hi guys, i've bought the engine without the carb, i've seen a few online that need repair and they are a litle pricey,,it is possible to adapt another brand besides the WD-0,?? I remember back home in Argentina, they would adapt them, and in.my visits to Cuba, well, they adapt anything.mix parts from Russian, European and american cars.

Do you need the three bolt carb or the four bolt carb? Can't recall just this moment. If it takes the 4 bolt, you could also use a WGD Carter, of which I have MANY.

This particular 4 bolt is a WDO, but does not have provision for the starter switch. This 3 WDO bolt does.

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Should be four 4 bolt, one of my 47's has a WDO and my other was modify with a WGD, so both works.
Wes

Shouldn't this thread be posted on the postwar section or do we perhaps need a 1941-1947 Clipper section?

Interesting how the 4 bolt mounting has a crossover between the barrels. I guess to help balance it out better?

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Good catch. The area besides helping to balance the two barrels looks to also serve as a chamber to feed vacuum to a port. Notice the fitting just above the crossover.

Perhaps for a vacuum line? Ernie in Arizona

As it turns out that passage belongs to the 'full manifold vacuum' circuit. There are three features in the WDO design that uses this vacuum source, namely;
? Vacumeter (the system that moves the metering rods)
? Choke unloader (the system that biases the choke open against the thermostatic spring force)
? Start switch (manifold vacuum disables the start switch)

Other systems that require vacuum access ports that are drilled at right angles to the throttle bores. These systems include:
? Idle mixture
? Distributor advance

Service Counselor Volume 22, Number 2, published February 1, 1948 contains information regarding the incorrect placement of the gaskets between the intake manifold, insulator block, and carburetor base flange. Seems that if the incorrect gasket is placed between the insulator block and the carburetor the gasket material may block the vacuum passage. The SC only describes the symptoms associated with the vacumeter, not the other two circuits. The correct gasket for this interface is the woven perforated steel core design. The plain paper gasket is installed at the manifold / insulator block interface. Seems Packard solved this problem by restrict the shipment of the plain paper gaskets to the service centers, and only shipped the steel core design to the field. The steel core gasket could be used in either location. The paper design was an 'assembly line' only configuration.

dp