The FAJS 44 IDF is an excellent and cost-effective alternative for those seeking classic IDF performance at a lower price point. This carburetor is a reproduction of the legendary Weber design and is a popular choice for engine projects aimed at improving power and throttle response. The carburetor comes complete with air horns (stacks) and additional linkage components, allowing it to be configured as either a right-hand or left-hand unit in dual setups.

Recommended Applications:

• Volkswagen Type 1 (1500-1600cc+): A classic upgrade for air-cooled engines.
• Porsche 356 / 912: Fits perfectly with appropriate intake manifolds or adapters.
• Ford Pinto: Frequently used in performance builds for various Ford models.

Included Base Jetting:

• Venturi (Choke): 36 mm
• Auxiliary Venturi: 4.5
• Main Jet: 135
• Emulsion Tube: F11
• Air Corrector Jet: 175
• Idle Jet: 50
• Pump Jet: 50
• Needle Valve: 1.75

Important Installation Advice:

To ensure a successful installation, we recommend monitoring the fuel pressure closely – it should not exceed 0.25 Bar (approx. 3.6 PSI) to prevent flooding. Using a Filter King pressure regulator is highly advised for best results. As a preventative measure for maximum reliability, we also suggest considering an upgrade to an original Weber needle valve.

In the video below, we discuss what to keep in mind when installing the FAJS 44 IDF (video in Swedish):