1991 YAMAHA 1000CC SPORTS FZR1000
Yamaha FZR 1000 EXUP
1991
Low 18,xxx KM
Imported From Japan
Sold With 3 Months Rego At Time Of Sale
Excellent Condition
Inspections Welcome
Shipping Available Australia Wide
The bike that brought Yamaha to the forefront of super bike design was launched in 1987 and it was called FZR1000. The 1987 version of the Yamaha FZR1000 had a top speed of over 250km/h and the 1989 version, crowned “The bike of the Decade”, could accelerate from 0-60 in less than 3 seconds and it also had a top speed of over 270km/h. With these features any bike would be very appreciated, so production continued.
Yamaha improved the performance of the bike, notably in 1989 when the engine was enlarged to 1002cc and added an electronically operated exhaust valve whose acronym led to the bike being universally known as the EXUP.
In spite of higher displacement its size was 8mm shorter and more compact, due to a revised inclination angle of the cylinders to 35 degrees. Valve angles and sizes had been changed, as well as the camshaft timing. Bigger carburetors helped boost performance and the crankshaft has been strengthened, alog with countless other modifications.
The system added useful mid range performance and the engine’s power was also increased to 145bhp.
The unique feature which gave the 1989 onward models their “EXUP” name was a servo motor driven exhaust valve. This allowed large bore exhaust reader pipes (for excellent gas flow at high engine speeds) coupled with the valve restricting flow at lower revs, to speed the gas through.
The chassis was also improved and the bike handled better, making the EXUP the pick of the Japanese Super bikes.
The 1989 frame (now called Delta box 2) used the engine as a stressed member. Gone were the down tubes, replaced by a sturdy fixation of the cylinder head with the frames upper box section. This layout was the foundation for the radical YZF-R1 chassis layout almost 10 years later.
But improving didn’t stop there. In 1991 the package was further improved with the FZR1000RU, featuring sharper and upside-down forks.
The last model improvements were in 1991 and 1994, until the FZR1000 was replaced by the YZF 1000 Thunder Ace in 1996.
The bike’s power plant was a water-cooled, 989cc engine whose angled-forward cylinder layout and DOHC, 20-valve cylinder format that had been introduced on the FZ750 two years earlier. This engine developed 130 bhp at 10000 RPM but Yamaha increased the engine’s displacement in 1989 to a 1002cc, developing a 145 bhp at10000 RPM and it was named Yamaha FZR1000 EXUP. The EXUP system boosted performance and torque and it was first to be used on a 4 stroke engine. The Exhaust Ultimate Power valve is an exhaust control system still used on the YZF R1 in a refined form, which controls the exhaust gas flow depending on the engine’s revolutions.
Displacement: 1002.00 ccm (61.20 cubic inches)
Engine type: in-line four
Stroke: 4
Power: 145.00 HP (105.8 KW) @ 10000 RPM
Valves per cylinder: 5
Starter: electric
Gearbox: 5-speed
