Idle Jet DGV, DFV, EPC 55

EMPI Idle Jet for DGV, DFV, and EPC Carburetors - Size .55

Product Overview

The EMPI 74403.055 idle jet is an essential component for fine-tuning the low-speed fuel circuit of your carburetor. Specifically designed for Weber DGV, DFV, and EMPI EPC series carburetors, this .55 size jet allows for precise calibration of the air-fuel mixture. Proper idle jet sizing is critical for achieving a smooth engine idle and a seamless transition into the main circuit without hesitation.

VW Fitment and Compatibility

This idle jet is a standard replacement and tuning part for several popular air-cooled VW carburetor setups. It is compatible with:

• Carburetor Types: Weber 32/36 DGV, Weber 32/36 DFV, and EMPI EPC 32/36 Progressive carburetors.
• VW Beetle & Super Beetle: Commonly used in 1600cc dual-port engines upgraded with progressive carburetor kits.
• VW Bus & Karmann Ghia: Fits Type 1 and Type 2 engines utilizing Holley-Weber style progressive intakes.
• Dune Buggies & Sand Rails: Ideal for off-road applications where low-end throttle response is vital for navigating technical terrain.

Pro Tech Tips for Carburetor Tuning

1. Solving the Transition Flat Spot: If your VW experiences a "stumble" or hesitation just as you pull away from a stop, it is often a sign that the idle jet is too small. Upgrading to a .55 jet provides the extra fuel needed to bridge the gap between the idle circuit and the main high-speed circuit.

2. Inspect for Clogs Before Replacing: Because the orifice in a .55 jet is extremely small, even a tiny speck of debris can cause a cylinder to misfire or the engine to stall at stoplights. Always check your existing jet for light-daylight through the hole; if it is blocked, spray it with carb cleaner rather than poking it with wire, which can internaly damage the precise sizing.

3. Don't Overtighten the Jet Holder: When installing your new EMPI idle jet, remember that these are made of soft brass. Snug the jet holder down until it is firm, but do not use excessive force. Overtightening can distort the jet or the carburetor body, leading to air leaks that make the engine impossible to tune correctly.