O.S. Engine OSMG2074 28XZ Truggy Race Engine  [OSMG2074]

O.S. Engine 28XZ Truggy Engine
Price:
AUD$0.00
Brand:
O.S. Engine
Model:
OSMG2074
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High Torque Truggy Engine from O.S. Engine 28XZ

If your truggy needs reliable punch off the start and a usable powerband, the O.S. Engine 28XZ is tuned for that role. Rider and racer input helped shape an engine that balances torque, throttle feel and heat control.

Powerband and Cooling Design

The 28XZ’s 0.284 cu in (4.65 cc) displacement and engine mapping deliver a strong power output, measured at 3.31 hp at 32,000 rpm. The enlarged two-piece head and inner head button enhance heat dissipation during extended running.

Durability Features and Fine Tuning

Key durability items include a sealed front bearing and a high-quality inner bearing in the crankcase. The oiled-bushed connecting rod increases longevity while the three-needle 21J slide-valve carburetor gives precise tuning options for track conditions.

Performance Accessories to Consider

For track-focused setups the Mark Pavidas Edition Tuned Pipe (OSMG2969) is a recommended match to improve exhaust scavenging. Check recommended flywheel sets for Mugen and Kyosho chassis for optimal throttle response.

Specifications

  • Displacement: 0.284 cu in (4.65 cc)
  • Bore: 0.728 in (18.5 mm)
  • Stroke: 0.681 in (17.3 mm)
  • Practical rpm: 4,000-38,000
  • Power Output: 3.31 hp @ 32,000 rpm
  • Weight: 13.1 oz (375 g)

The 28XZ is a practical, tunable choice for truggy owners aiming for dependable on-track results and compatibility with popular performance parts.

Yes, follow a staged break-in with varied throttle and short runs, checking plug color between cycles to ensure proper seating and ring condition.
The two-piece head is larger but most truggy bodies accommodate the size; verify clearance and airflow when fitting to a tight chassis layout.
Inspect bearings and linkages after every few running sessions, clean the carburetor regularly, and re-lubricate moving parts to avoid wear from dust and grit.
The 28XZ is versatile enough for race setups and spirited club runs, offering tunability that adapts to different styles of driving.
Choose a quality nitro blend with recommended oil content and adjust needle settings to match ambient temperature for stable running and plug readings.

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