Carb Rebuild Kit, 61-73

OVERVIEW

Restore the crisp throttle response and smooth idle your air-cooled engine deserves with the IAP Master Carburetor Rebuild Kit. Unlike the basic "gasket-only" kits found at big-box retailers, this comprehensive master kit is engineered for the serious VW enthusiast who understands that a true rebuild requires more than just fresh paper. Over time, internal components like the needle and seat, accelerator pump diaphragm, and various tension springs lose their integrity due to heat cycles and modern ethanol-blended fuels. This kit addresses those critical wear points, providing 13 more essential components than standard kits from brands like Walker or Royze. By replacing these internal "soft parts" and hardware, you eliminate the common headaches of flat spots during acceleration, flooding, and the dreaded erratic idle that plagues aging Solex and Bocar units.

This kit is the definitive solution for a wide range of stock-style carburetors, including original German Solex, Brazilian Brosol, Mexican Bocar, and even modern EMPI replacements. It covers the evolution of the upright engine carburetor from the early 28 PICT series all the way through the high-performance 34 PICT-3 found on dual-port 1600cc engines. Whether you are refreshing a daily driver Beetle or performing a concours-level restoration on a vintage Karmann Ghia, the precision-fit gaskets and high-quality needle/seat assembly included here ensure a leak-free seal and accurate fuel metering. Don''t settle for a "quick fix" that leaves old, tired springs and worn valves inside your carb; do the job once and do it right with a kit designed to withstand the rigors of the modern road.

FITMENT

This Master Rebuild Kit is designed for Type 1, 2, and 181 models equipped with the following carburetor series (1961-1973):

• Solex / Brosol / Bocar / EMPI: 28 PICT, 28 PICT-1
• Solex / Brosol / Bocar / EMPI: 30 PICT-1, 30 PICT-2, 30 PICT-3
• Solex / Brosol / Bocar / EMPI: 31 PICT-3, 31 PICT-4
• Solex / Brosol / Bocar / EMPI: 34 PICT-3
• VW Beetle (Standard & Super): 1961 through 1973
• VW Karmann Ghia: 1961 through 1973
• VW Bus / Type 2: 1961 through 1971 (Upright Engines)
• VW Thing / Type 181: 1973
• Note: Does NOT service the 34 PICT-4 carburetor found on some 1974 models.

SPECS

• Part Number: 113-198-575 (IAP Master Series)
• Components: Includes 13 additional parts compared to standard gasket kits.
• Diaphragms: High-grade nitrile/synthetic rubber for ethanol resistance.
• Needle & Seat: Precision-machined brass with viton-tipped needle (where applicable).
• Gasket Material: Heavy-duty fuel-resistant cellulose fiber and cork.
• Hardware Included: Accelerator pump springs, cotter pins, and various O-rings.
• Compatibility: 6V and 12V systems (mechanical components are universal).
• Weight: 0.3 lbs.

PRO TIPS

1. The Secret is in the Cleaning

A rebuild kit is only as good as the casting it is installed into. Before opening your new IAP kit, completely disassemble your carburetor and soak the metal body in a high-quality carburetor dip for at least 4 to 12 hours. Once soaked, use compressed air to blow out every single internal passage, specifically the tiny idle circuit bypass holes. If you can''t see light through a jet or a passage, the new gaskets won''t fix your stumbling issues. Ensure all old gasket material is scraped perfectly flat using a plastic scraper to avoid gouging the soft zinc alloy of the carburetor body.

2. Check Your Float Level and Needle Seat Washer

When installing the new needle and seat included in this kit, pay close attention to the copper crush washer. This washer acts as a shim to set the fuel level in the bowl. If your engine has been running rich or "stinking" of gas at stoplights, your float level may be too high. Always verify that the float moves freely on its pin and isn''t "heavy" (leaking fuel inside the plastic/brass float). A properly adjusted float ensures that the fuel sits just below the discharge nozzle, preventing unwanted siphoning when the engine is off.

3. Modern Fuel Protection

Today''s pump gas contains ethanol, which is hygroscopic (attracts water) and can be corrosive to vintage carburetor internals. While this kit features upgraded materials to handle modern blends, it is a master-tech best practice to install a high-quality transparent fuel filter between the fuel pump and the carburetor. This allows you to visually inspect for debris before it reaches your freshly rebuilt needle and seat. Additionally, if you plan on letting your VW sit for more than three weeks, use a fuel stabilizer to prevent the fuel in the bowl from turning into a gummy varnish that will clog your new jets.