34 ICT, EPC 34 & 38E Idle Jet

OVERVIEW

Precision tuning is the heartbeat of a high-performing air-cooled engine, and the idle jet is often the most overlooked component in the fuel delivery system. This EMPI .60 idle jet is engineered specifically for use with 34 ICT, EPC 34, and 38E carburetors, providing the critical fuel metering required for a smooth, stable idle and a seamless transition into the main circuit. When your VW is experiencing a "flat spot" or hesitation just as you step on the gas, it is frequently a sign that your idle circuit is improperly sized for your engine''s displacement, cam profile, or local altitude. By upgrading to a high-quality .60 jet, you ensure that your engine receives the exact volume of fuel needed to bridge the gap between closed throttle and the point where the main venturis take over.

Constructed from premium brass with exacting tolerances, these jets are designed to withstand the harsh environments of an air-cooled engine bay without corroding or clogging easily. Whether you are running a dual 34 ICT setup on a 1600cc daily driver or a Weber 32/36 DGV on a Type 4 conversion, having the correct idle jetting is the difference between a temperamental motor and a reliable powerhouse. A .60 jet is a popular choice for tuners looking to richen up the bottom end to compensate for modern ethanol-blended fuels or to smooth out the off-idle response in larger displacement 1776cc or 1835cc builds. At Appletree Automotive, we understand that every detail matters, and these precision-machined jets are the professional solution for achieving the perfect stoichiometric ratio at low RPMs.

FITMENT

• VW Beetle (Type 1): All years equipped with EMPI 34 ICT or EPC 34 Dual Carburetor Kits.
• VW Super Beetle: All years utilizing 34 ICT or Weber-style progressive setups.
• VW Bus / Transporter (Type 2): 1950-1979 models running ICT or DGV carburetors.
• VW Karmann Ghia: 1956-1974 models with upgraded carburetor configurations.
• VW Type 3 (Squareback, Fastback, Notchback): Models converted to ICT or EPC dual carb systems.
• VW Thing (Type 181): All years with aftermarket fuel systems.
• Carburetor Compatibility: EMPI 34 ICT, EMPI EPC 34, EMPI 38E, Weber 32/36 DGV, and Weber 38 DGS.

SPECS

• Jet Size: .60 (0.60mm orifice diameter).
• Part Number: 74409.60.
• Material: High-grade machined brass for corrosion resistance.
• Jet Type: Idle Circuit / Low-Speed Transition Jet.
• Compatibility: Fits Weber and EMPI ICT/EPC series carburetors.
• Sold As: Individually (Note: Dual carb setups require two).
• Weight: 0.13 lbs.

PRO TIPS

Pro Tip 1: Diagnose the "Lean Pop" Properly. If you notice a popping sound through the intake or a significant hesitation when you first crack the throttle, your idle jet is likely too small. The idle jet handles roughly 80 percent of your city driving, so don''t assume a stumble is caused by the main jets. Swapping to a .60 jet provides that extra bit of fuel needed to eliminate lean-out conditions during the transition phase, especially if you are running a performance exhaust or a high-flow air cleaner.

Pro Tip 2: Cleanliness is Next to Godliness. Air-cooled VWs are notorious for picking up sediment from old fuel tanks. Because the orifice in a .60 jet is extremely small, even a tiny speck of debris can cause a cylinder to drop at idle. Never use a wire or a drill bit to clean these jets, as brass is soft and you will accidentally enlarge the hole, ruining the calibration. Use only compressed air and high-quality carburetor cleaner to maintain the integrity of the jet''s flow rate.

Pro Tip 3: Sync and Balance After Installation. Whenever you change idle jets on a dual carburetor setup, you must re-synchronize your carburetors. Changing the fuel volume at idle will affect your idle speed and mixture screw settings. After installing your new .60 jets, use a Uni-Syn or a snail-style flow meter to ensure both carburetors are pulling the same volume of air, then adjust your mixture screws to find the "lean best" idle for a smooth, rhythmic VW purr.