6603 - Signature Series Fully Modified 30.5cc Marine Reed Engine +5mm Long Rod

Fully ported 30.5cc reed engine. Comes complete as shown in the picture with a Zenoah EZ start. Engine mounts and carb not included. 45" cat The following work has been done: disassemble crank to install +5mm long rod and re-balance combustion chamber cut to accommodate +2mm stroke crank and dome re-cut. 5mm cylinder spacer used to compensate longer connecting rod eyebrows transfer runner knife edged transfer ports enlarged/reshaped intake port epoxied with dual boost ports cut lightened and windowed piston exhaust duration raised and port widened ignition timing advanced through coil location on ignition plate (fixed) reed valve flowed and surfaced reed case intake track flowed and surfaced