Great article, JK, and something I recieve emails about weekly. -ES
Deluxe Beetles, which were imported directly from West Germany to Volkswagen Dealerships in the USA, came with the Solex 30 Pict-1 Carburetor.
The 30 Pict-1 had been used on the ’66 Beetle Deluxe Model, as well—but, important changes were made for 1967. Let’s look at some of these changes and why they are important for the 1967 Deluxe Beetle.
Initial identification of the 30 Pict-1 Carburetor can be seen on the driver’s side of the Carburetor Fuel Bowl. In photo #1, below, this identification is abundantly clear.
The top half of this same Carburetor also displays German manufacturing identification but with NO additional marking to link the top to the bottom half.
This is why it is important not to switch parts from one Carburetor to another unless it can be verified that the parts are for the same model of Carburetor.
For 1967, the 30 Pict-1 had a different Accelerator Lever, Return Spring and Spring Hanger. Whereas Carburetors previously had employed a tube-and-spring-and spring keeper return mechanism for the Accelerator Lever, Solex engineers developed a simple way to attach a strong Return Spring which dismissed the former clumsy tube-spring-keeper mechanism.
The Accelerator Lever now came with an appurtenance where one end of a strong coil spring could be attached. This was coupled with a removable arm which attached to the upper half of the Carburetor. Everyone loved the new design.
Carburetors were stamped by the manufacturer to designate their intended application. The 30 Pict-1 for 1967 Deluxe Beetles came with a stamping on the bottom flange, driver’s side, which read VW 105-1. Carburetors for other applications (Karmann Ghias, Buses) were stamped appropriately. But, only the Carburetor for the Deluxe 1967 Beetle was stamped VW 105-1.
A view of the side of the VW 105-1 30 Pict-1 Carburetor reveals the casting for the Power Fuel Supply drillings.
The casting extends along the driver’s side at an angle from the Bowl, then upward to the the Carburetor’s top half.
Drilling was accomplished by drilling straight through the angled casting into the Fuel Bowl. Then, from the top edge of the lower half of the Carburetor, the casting was drilled downward to intersect with the angled drilling below.
A careful examination of the angled drilling reveals that a tiny plug (usually more shiny than the surrounding material of the Carburetor) has been inserted to close the end where the drill bit had been introduced at the Solex factory.
Take a look into the interior of the Fuel Bowl and a hole can be seen to the above described drillings. The drilling in the Bowl’s bottom takes full advantage of raw gasoline.
See Photo #9 to view the drilling downwards which intersects with the angled drilling. I have removed the Brass Jet-Plug so that the drilling can be seen clearly
Photo #10 reveals the continuance of drilling into the top half of the Carburetor which matches that of the drilling in the bottom half of the Carburetor.
To complete the Power Fuel Supply drillings, Photo #11 shows where a drilling was accomplished for the insertion of the Brass Fuel Dispensing Tube-Jet. Again, a tiny, shiny plug can be seen upon close inspection. I removed the Idle Cam and Choke Plate Lever for easier inspection.
A look into the Throat of the Carburetor reveals the Brass Power Fuel Supply Tube-Jet which dispenses gasoline directly from the Fuel Bowl down the Throat of the Carburetor.
Why the addition of the Power Fuel Supply to the 30 Pict-1 for 1967? For extra power when needed. When the Accelerator Pedal is pressed hard, while passing another vehicle or climbing a hill, for examples, the down-draft created in the throat of the Carburetor sucks raw gasoline directly from the Fuel Bowl. This is in addition to what is coming into the Carburetor’s throat through the normal Accelerator Pump System.
The Power Fuel System had been used on some previous Carburetors, but discontinued until the advent of the 1967 Model.
The Power Fuel System for the Deluxe ’67 Beetle uses no Check Ball and has a Jet opening of 0.50.
In the analysis, the question can be asked: “Does it really matter which Carburetor a person installs onto the Engine of his 1967 Beetle?”
The answer always will be—“For originality’s sake—yes.”
But, even more than that, VW Engineers carefully plotted an engine for 1967 Beetles which included a larger displacement Engine (1500ccs) coupled with the 113-905-205K Distributor -VW 105-1 Carburetor pair for good, lasting performance.