Zenoah G290RC 4-Bolt Engine
Complete with carburettor and clutch. Please see below for optional engine upgrades.
- 4-bolt cylinder design for improved sealing and reduced gasket blowout
- Stronger and lighter crankcase with additional crankshaft bearing
- High performance WT-990 carburettor
- Lighter flywheel
- Metal impregnated insulator gasket for a better seal and modified cylinder hardware to better resist vibration
- 4 transfer port 36mm cylinder with a "hemi" style combustion chamber
- Redesigned fins for better cooling and larger ports
- Full circle crankshaft
Cylinder Displacement: 28.5cm³ / 1.74 cu.inch
Cylinder Bore: 36 mm / 1.42 inch
Cylinder Stroke: 28 mm / 1.1 inch
Power: 3.5HP @13,000 RPM
Torque: 1.23 ft-lbs (1.68 N-m) @10,000 RPM
Timing: 30 degrees BTDC @ 8,000 RPM
Compression Ratio: 8.9:1.
Fuel: 91 octane (using the R+M/2 octane rating method) or higher mixed 25:1 with 2-stroke oil
Carburettor: Walbro WT-990
Ignition System: TCI
Spark Plug: NGK CMR7H
Start System: Recoil Starter
Baja 5B/5T/5SC, Losi 5ive-T/5ive-B/DBXL, Kraken Vekta.5, as well as a wide variety of other RC cars, planes, boats, and helicopters.
Losi 5IVE-T/TLR, 5IVE-B or Desert Buggy (DBXL) - you must use your stock fan cover and clutch.
FG installations may require some modification to the crankcase for proper fitment.
Engine Upgrade Options
Carby - Bearing Modified
Sealed stainless steel bearings installed on both ends of the throttle shaft for the ultimate sand ingress protection. Also increases the life of the throttle shaft and bore.
Carby - Competition Modified
Sealed stainless steel bearings installed on both ends of the throttle shaft for the ultimate sand ingress protection. And additional upgrades to increase fuel and air flow.
Carby - Fully Modified
The same modifications as the Bearing and Competition modified options with additional changes to increase cfm and response time. Will produce 500+ rpm to a fully modified engine with a boost to the low and mid.
Clutch - Performance
Fully balanced and lightened for quicker response time and cooler running.
Flywheel - Fully Modified
Lightened and balanced for quicker acceleration and higher rpm without sacrificing integrity. Will not fly apart at high rpm.