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

O.S. Engine 28XZ Truggy Engine
Price:
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Brand:
O.S. Engine
Model:
OSMG2074
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Balanced Truggy Drive: O.S. Engine 28XZ

The O.S. Engine 28XZ delivers the kind of consistent power curve truggy drivers expect. Developed with racer input, it provides usable torque for heavier vehicles while retaining fine tuning potential for experienced operators.

Efficient Cooling and Output

This engine combines a compact 0.284 cu in (4.65 cc) displacement with a strong power figure of 3.31 hp at 32,000 rpm. Its larger two-piece head and inner head button design assist heat control during prolonged, hard use.

Serviceable Design and Precise Tuning

Durability comes from a sealed front bearing and a high-performance inner bearing, while the oiled-bushed connecting rod improves life under load. The three-needle 21J slide-valve carburetor allows careful mixture adjustment to suit track and weather.

Matching Accessories for Best Results

For improved exhaust flow and efficiency consider the Mark Pavidas Edition Tuned Pipe (OSMG2969). Specific flywheel options for Mugen and Kyosho can help tailor throttle response for different chassis setups.

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)

For anyone setting up a competitive truggy, the 28XZ offers the tunability and build quality needed to extract consistent lap times and reliable performance.

Compatibility varies by chassis; most common truggy frames accept the unit but check head clearance and mounting flange position before final installation.
In cooler conditions lean the main slightly and monitor plug color after test laps, making conservative adjustments until the engine shows stable combustion and response.
The robust bearing arrangement and oiled-bushed connecting rod give the 28XZ good durability, but regular cooling breaks and maintenance are recommended during long, rough runs.
Check for loose fasteners, inspect the head and bearings for overheating signs, clean the carburetor if needed, and store the engine with a light after-run oil treatment.

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