Carburetor Insulator for WLA-2 GT55 - O.S. Engine OS29781110  [OS29781110]

Heat-Barrier Insulater Details

This O.S. Engine OS29781110 carburetor insulater is an RC-scale carburetor accessory intended to sit between the carburettor and the engine backplate to reduce heat transfer and help maintain more consistent fuel metering during tuning.

By creating thermal separation between the crankcase and the carb body, the insulater reduces the chance of fuel vaporising at the intake, which can stabilise idle and improve low-end response under sustained running conditions.

Fitting is simple for anyone experienced with engine servicing: remove the carburettor, clean both mating surfaces thoroughly, place the insulater between the carb and backplate, then tighten mounting screws evenly to avoid warping the carb body. After installation, check for air leaks and complete a tuning pass to verify idle and needle settings.

Remember that changes to thermal behavior will usually require slight needle readjustments. Perform a warm-up run and fine tune the low-speed mixture, and inspect seals periodically to ensure long-term reliability.

Ideal when you need to limit carb heat transfer during tuning and frequent running; always confirm mating seals and needle settings after fitment.