Yamaha XV 750E (1981-82) vs Yamaha DT 250 (1981) vs Yamaha WR 250Z (1997)

Comparison technical specifications

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Make:	Yamaha	Yamaha	Yamaha
Model:	XV 750E	DT 250	WR 250Z
Years:	1981-82	1981	1997
Engine:	Four stroke, 75°-V-Twin cylinder, SOHC. 2 valve per cylinder.	Two stroke, single cylinder	Two stroke, single cylinder
Capacity:	748 cc / 45.6 cu-in	246 cc / 15.0 cu-in	249 cc / 15.2 cu-in
Bore x Stroke:	83 x 69.2 mm	70 x 64 mm	68 x 68.8 mm
Cooling System:	Air cooled	Air cooled	Liquid cooled
Compression Ratio:	8.7:1	6.8:1	10.9:1
Induction:	34mm Keihin carburetors	Single 28mm Mikuni VM28SS	Mikuni VM38SS carburetor
Ignition:	CDI	External-rotor magneto; CDI; six-volt battery	CDI
Starting:	Electric	Kick	Kick
Max Power:	50.8 hp / 37.8 kW @ 7000 rpm	17 hp 12.6 kW @ 6000 rpm	49.8 hp / 37.2 kW @ 8250 rpm
Max Torque:	5.4 kgf-m / 64.7 Nm @ 5750 rpm	20.7 Nm / 15.3 lb-ft @ 5500 rpm	4.69 kgf-m / 44.5 Nm @ 7500 rpm
Transmission:	5 Speed	5 Speed	5 Speed
Final Drive:	Shaft	Chain	Chain
Front Suspension:	37mm Showa leading axle. adjustment for air pressure and rebound damping	Oil-damped, coil-spring fork with forward-mounted axle and	43mm inverted fork
Front Wheel Travel:	145 mm / 5.7 in	195 mm / 7.6 in	300 mm / 11.8 in
Rear Suspension:	Monoshock single damper, adjustment for air pressure and rebound damping	DeCarbon-type, nitrogen-charged mono-shock producing	Monocross, swinging arm
Rear Wheel Travel:	87 mm / 3.4 in	152 mm / 5.9 in	315 mm / 12.4 in
Front Brakes:	2x 267mm disc 2 piston calipers	Conical hub with drum brake	Single 204mm disc
Rear Brakes:	Drum	Conical hub with rod-actuated drum brake	Single 189mm disc
Front Tyre:	3.50-19	3.00-21	80/100-21
Rear Tyre:	120/90-18	4.00-18	110/100-18
Fuel Capacity:	14.5 Litres / 3.8 US gal	8.5 Litres / 2.2 gal	13 Litres / 3.4 US gal