This is a replacement Novarossi REX Copper Head Gasket Shim Set, and is intended for use with the Novarossi REX R57HR-3D helicopter engine. These shims are used to raise or lower the deck height of the engine to adjust the compression ratio according to the nitro content in the fuel being used. Fuels with higher nitro content will require that you increase the deck height to avoid detonation. Check the manufacturers recommendations to determine adequate deck height for your application.
- (1) .10mm Shim
- (1) .20mm Shim
- (1) .30mm Shim
This product was added to our catalog on May 1, 2012