Cylinder Spacer Kit for GY6 80cc 100cc Conversion Kit - 50mm Diameter - For Conversion and Compression Tuning

Cylinder Spacer Kit for GY6 80cc 100cc Conversion Kit - 50mm Diameter - For Conversion and Compression Tuning Description

This cylinder shim kit is an essential technical accessory for engine tuning projects on the GY6 platform, specifically for 80cc to 100cc conversions using a 50mm bore cylinder. When you install a "big bore" kit (larger bore cylinder) on a GY6 engine, the compression ratio can change. These aluminum or copper shims of varying thicknesses (generally from 0.5mm to 2.0mm) are inserted between the cylinder and the crankcase to precisely adjust the compression chamber volume (compression ratio). This prevents the piston from hitting the cylinder head (timing) or optimizes compression for the fuel used, thus ensuring the reliability and performance of your conversion.

Key Features:

Specific Application: Designed for GY6 80cc to 100cc conversion kits with a 50mm bore.

Make sure this is the correct size for your new cylinder.

Compression Height Adjustment: Allows for fine-tuning the gap between the piston at Top Dead Center (TDC) and the cylinder head, crucial for safety and performance.

Various Thicknesses: The kit typically includes several gaskets of varying thicknesses (e.g., 0.1mm, 0.2mm, 0.5mm, 1.0mm) for precise adjustment.

For Experienced Tuners and Mechanics: An essential accessory when installing a non-OEM cylinder-piston kit. Requires measuring compression height with a feeler gauge.

For GY6 customization: Essential in the world of GY6 scooter (and other) tuning for safe and effective conversions.

Advantages:

Prevents engine damage: Avoids piston/cylinder head contact that would destroy the engine.

Optimizes performance: Allows you to adjust compression for better performance or to use specific fuel (e.g., lower octane rating).

Facilitates installation: Provides the necessary tools to adapt to the manufacturing tolerances of different kits.

Essential for professional installation: No serious conversion should be done without checking and adjusting compression height with these gaskets.