Yamaha XJ 750 SECA
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| Yamaha XJ 750 SECA | |
| Manufacturer | |
|---|---|
| Production | 1981 |
| Class | Naked |
| Engine | Air Cooled, Four Stroke, Transverse Four Cylinder, DOHC, 2 Valves Per Cylinder |
| Bore / Stroke | 63.5mm x 63.5mm |
| Compression ratio | 9.2:1 |
| Horsepower | 76.04 HP (56.7 KW) @ 9000RPM |
| Torque | 48.68 ft/lbs (66.0 Nm) @ 7500RPM |
| Transmission | Gear box: 5-Speed Final Drive: Shaft |
| Suspension | Front: Telescopic Forks Rear: Swing Arm |
| Brakes | Front: Single 269mm Disc Rear: Drum |
| Front Tire | 3.25-19 |
| Rear Tire | 120/90-18 |
| Wheelbase | 56.89 inches (1445 mm) |
| Length | 86.42 inches (2195 mm) |
| Weight | 241.0 kg (wet) |
| Recommended Oil | Yamalube 10w-40 |
| Fuel Capacity | 1.32 Gallon (5.00 Liters) |
| Manuals | Service Manual |
The Yamaha XJ 750 SECA was a Air Cooled, Four Stroke, Transverse Four Cylinder, DOHC, 2 Valves Per Cylinder Naked motorcycle produced by Yamaha in 1981. Max torque was 48.68 ft/lbs (66.0 Nm) @ 7500 RPM. Claimed horsepower was 76.04 HP (56.7 KW) @ 9000 RPM.
Engine[edit | edit source]
A 63.5mm bore x 63.5mm stroke result in a displacement of just 749.0 cubic centimeters.
Drive[edit | edit source]
The bike has a 5-Speed transmission. Power was moderated via the Wet multi-plate.
Chassis[edit | edit source]
It came with a 3.25-19 front tire and a 120/90-18 rear tire. Stopping was achieved via Single 269mm Disc in the front and a Drum in the rear. The front suspension was a Telescopic Forks while the rear was equipped with a Swing Arm. The XJ 750 SECA was fitted with a 1.32 Gallon (5.00 Liters) fuel tank. The wheelbase was 56.89 inches (1445 mm) long.
1981 - 1985 Yamaha XJ 750 SECA[edit | edit source]
Yamaha lunched in 1981 one of the most technically advanced motorcycles of its time. Yamaha built the big XJ 750 Seca around a sweetheart of an engine, an enlarged version of 1980’s cruiser surprise, the 650 Maxim. The 750 version of the Seca was understressed and the narrowest engine in the 750 cc class upon its debut, thanks to the alternator and ignition being placed behind the cylinders.