Segment: Enduro/Offroad
Production years: 1974, 1975
2 Photos
The DT's engine was your basic 250cc air-cooled two-stroke single that was dirt reliable plus dirt cheap to operate and maintain. Fed by a 26mm Mikuni carburetor and with 6.8:1 compression, the 246cc (15 seven ports on its "Torque Induction" two-stroke engines). Along with the standard intake, exhaust and transfer ports, Yamaha used an additional two transfer ports along with holes in the piston skirt. These ho would normally be covered by the skirt. This small detail resulted in a slight increase in power, and better throttle response than Yamaha's pre 1972 engines.
YAMAHA DT-3 250 1974-1975
YAMAHA DT-3 250 250
| engine specs | Type: | Two stroke, single cylinder, air cooled | Displacement: | 246 cm3 | Bore X Stroke: | 2.8x2.5 in OR 71 mm | Compression Ratio: | 6.8:1 | Horsepower: | 24/7000 KW(hp)/RPM | Torque: | 18/6000 lb-ft/RPM OR 24/6000 Nm/RPM | Fuel System: | 26mm Mikuni carburetor |
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| transmission specs | Gearbox: | 6-Speed | Clutch: | Wet, multiplate | Primary Drive: | - | Final Drive: | Chain |
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| chassis specs | Frame: | Duplex cradle | Front Suspension: | Telescopic forks | Rear Suspension: | Dual shocks | Front Brake: | Drum | Rear Brake: | Drum |
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| dimension specs | Overall Length: | 82.7 in OR 2101 mm | Overall Width: | 35 in OR 889 mm | Seat Height: | 32 in OR 813 mm | Wheelbase: | 54.7 in OR 1389 mm | Ground Clearance: | 10 in OR 254 mm | Weight: | 269 lbs OR 122 kg | Fuel Capacity: | 2.4 gallons OR 9.1 L |
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| tyres specs | Front: | 3.25-19 | Rear: | 4.00-18 |
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| power system specs | Power pack: | - | Nominal Capacity: | - | Maximum Capacity: | - | Charger type: | - | Charging time (normal): | - | Charging time (quick): | - | Range: | - |
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