The Zenoah G240RC engine is a direct improvement over the G230RC. Its improvements include a 4 bolt cylinder design, a stronger and lighter crank case, an additional bearing added to the output side of the case, improved cooling fin arrangement, larger ports and a the higher performing Walbro 813 carburettor.

Technical SpecificationsEdit

  • Displacement: 22.5cc
  • Piston Rings: 1
  • Compression: 8.9:1
  • Transfer Ports: 4
  • Reed: no
  • Carburetor: Walbro WT-813
  • Stock Carb Settings: H- 1 1/8, L- 1 1/4
  • Oil Mixture: 25:1
  • Horsepower: 2.8 @ 10,000 RPM
  • Net Power: 2.13 kw
  • Rotation (output side): counter-clockwise from PTO side
  • Clutch Diameter: 54mm
  • Ignition System: TCI
  • Idle RPM: 4000 +/- 300 rpm
  • Max RPM: 14000 under load/ 19500 without load
  • EPA Compliant: no
  • C.A.R.B. Compliant: no
  • Fuel Type: 91 octane using R+M/2 rating method


The Engine. The engine was released in the Spring of 2008 and is currently available for $220 from various retailers.

Parts and Service. Parts for the Zenoah are relatively expensive, but are readily available. In December 2009, Zenoah released a 29cc big bore kit for the Zenoah four-bolt RC engines.


This engine is very reliable, its a Zenoah after all!


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