Pair of Bakelite Thermal Spacers for 40 mm Twin-Choke Carburetor

Bakelite thermal spacers: insulation and performance

The pair of Bakelite thermal spacers is an essential accessory for tuned engines using 40 mm horizontal twin-choke carburetors. Designed for Weber, Solex, and Dell'Orto, these spacers create an effective thermal barrier between the intake manifold and the carburetor body. Bakelite, thanks to its low conductivity, prevents the float bowl from overheating, stopping premature fuel evaporation. Consequently, the risk of "vapor lock" is eliminated, ensuring quick starts and stable carburation even after intense engine use.

Technical features and material benefits

With a thickness of 8 mm, the pair of Bakelite thermal spacers offers the perfect balance between insulation and engine bay clearance. Unlike metal or cheap rubber flanges, Bakelite maintains its flatness over time, preventing annoying parasitic air leaks. Therefore, the airtight seal of the fuel system remains constant, ensuring linear airflow to the intake ports. Furthermore, the material's mechanical strength protects the carburetor flanges from vibrations and heat-induced warping, extending the service life of internal components.

Here are the technical specifications of the product:

• Compatibility: 40 mm horizontal twin-choke carburetors (Weber, Solex, Dell'Orto).

• Material: High thermal resistance Bakelite.

• Thickness: H 8 mm for optimal insulation.

• Quantity: Pack of 2 pieces (Pair).

• Application: Fiat 500, 126, and derivatives with oversized carburetors.

Thermal optimization for sporty restorations

Installing these spacers represents a professional solution for optimizing the engine's volumetric efficiency. By reducing the temperature of the air-fuel mixture, a denser charge and more efficient combustion are achieved. In this way, throttle response becomes more precise, especially during hot restarts. As a result, managing the horizontal carburetor is less problematic during rallies or sporty driving. It is a technical detail that separates amateur assembly from professional tuning, guaranteeing reliability and consistent performance in every situation.