GGT10 Pulse Spacer - O.S. Engine OS4A407040  [OS4A407040]

Compact spacer for refining exhaust pulses

The O.S. Engine pulse spacer is an accessory designed to sit between the engine mounting or exhaust flange and the manifold system on model glow engines. It allows modelers to fine tune pulse characteristics by modifying how pressure waves interact at the intake and exhaust interfaces of small R/C engines.

Installation is simple for anyone familiar with engine mounting: locate the spacer at the flange, use the existing mounting hardware to secure it, then check for correct alignment and sealing. No specialised tooling is normally needed beyond a basic hex driver set; always ensure flange faces and gaskets are in good condition prior to final tightening.

As a tuning aid, the spacer alters the timing and magnitude of pressure pulses reaching the intake and exhaust, which can influence throttle response and the effective tuning band of the engine. Make small, single-variable changes and log the outcomes to see the spacer's true effect on performance.