Honda GX270 8.5HP 270cc Engine – 22mm Shaft, Forced Air Cooled (ID 18249)
Honda GX270 generates 8.5 horsepower. A 270cc block backs up the output, and torque peaks at 38.2 Nm. It's built for cement mixers and power trowels. Recoil Start gets it running without a fuss.
- Delivers 8.5 horsepower on demand
- The 270cc block handles the load
- Peak torque reaches 38.2 Newton-meters
- A 22mm horizontal shaft, standard mount
- Simple pull-cord start, nothing to charge
Description
Repower stalled reversible plate compactors with the Honda GX270 horizontal engine (ID 18249) to restore hard-hitting compaction force on active road paving projects. Heavy compaction equipment subjects powerheads to brutal high-frequency vibration that cracks thin crankcases and ruins standard governor linkages. Honda reinforces this 270cc 8.5HP engine with thick base mounting ears, a rigid crankcase casting, and an internal mechanical governor built to handle severe compaction cycles.
Splash lubrication feeds motor oil across the connecting rod bearing and wrist pin, stopping metal-on-metal wear during long asphalt patching shifts. The mechanical governor reacts to sudden drive resistance, opening the carburetor throttle plate to prevent engine bogging. The dual-element air cleaner blocks abrasive crushed aggregate dust before air reaches the combustion chamber, preserving compression over multiple working seasons.
Engine Architecture of Honda GX270 (ID 18249)
- 270cc Commercial OHV Powerplant: Produces 8.5 net horsepower to drive heavy reversible plate compactors.
- 22mm Metric Straight Keyed Shaft: Integrates directly with imported European vibratory compactor clutches and pulleys.
- Dual Ball Bearing Crankshaft Support: Absorbs high radial belt tension to prevent crankshaft seal leaks and shaft deflection.
- Durable Cast-Iron Cylinder Sleeve: Resists bore wear from abrasive grit to extend engine life in harsh working conditions.
- Dual-Element Commercial Air Cleaner: Combines an oiled foam pre-cleaner with a paper filter element to trap fine grit.
- Integrated Honda Oil Alert: Protects internal mechanical parts by shutting off spark if crankcase fluid levels drop.
Commercial Advantages & Heavy-Duty Build
Built for harsh construction environments, this single-cylinder horizontal engine delivers reliable torque without excessive maintenance costs.
- Reinforced base mounting ears and a heavy crankshaft journal resist fatigue from rough equipment vibration.
- High combustion efficiency lowers fuel burn per job, cutting daily operating expenses across commercial fleets.
Commercial Equipment Applications & Fit
Weighing 55 pounds dry with an industry-standard 4-bolt horizontal mounting base and 22mm shaft, this motor mounts directly onto reversible plate compactors, road trench rammers, masonry saws, and soil tillers without adapter plates.
Warranty Protection & Routine Upkeep
- Factory warranty terms provide 3-Year commercial and consumer coverage on all core mechanical assemblies.
Service this engine with fresh 10W-30 motor oil every 100 operating hours. Tap clean the air filter element weekly on dusty job sites, and maintain the spark plug electrode gap at 0.028 to 0.031 inches. Order the Honda GX270 horizontal shaft engine (ID 18249) from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.
Honda GX270-RA2 Technical Specs
| Brand | Honda |
| Full Model Code | GX270-RA2 (Reduction Gear) |
| Country of Origin | Japan |
| Engine Orientation | Horizontal Shaft |
| Engine Type | 4-Stroke, OHV, Single Cylinder |
| Displacement | 270 cc |
| Bore x Stroke | 77 x 58 mm |
| Compression Ratio | 8.5:1 |
| Maximum Output | 6.3 kW (8.5 HP) @ 1800 RPM (Output Shaft) |
| Maximum Torque | 38.2 Nm (28.2 lbs-ft) @ 1250 RPM (Output Shaft) |
| Specific Fuel Consumption | 2.4 L/hr @ 3600 RPM (Engine) |
| Fuel Induction System | Butterfly Carburetor |
| Ignition System | Digital CDI |
| Start System | Recoil Start |
| Shaft Specification | 22 mm Straight Keyway (2:1 Reduction) |
| Fuel Tank Capacity | 5.3 Liters |
| Oil Capacity & Type | 1.1 Liters / SAE 10W-30 |
| Cooling System | Forced Air Cooled |
| Dry Weight | 28.5 kg |
| Dimensions | 405 x 428 x 422 mm |
| Standard Warranty | 3 Years |
| Primary Application | Cement Mixers, Power Trowels, Slow-Speed Winches |












Reviews
There are no reviews yet.