Wednesday, 21 July 2010

Suzuki GSX-R750 1987-1989 History part 2

This is the next post of Suzuki GSX-R History, and this is Suzuki GSX-R750 1987-1989 History for Part 2. We can find the changes of Suzuki GSX-R 750 from years to years.

1988 Suzuki GSX-R750

GSX-R750 (H) 1987

The 1987 model received upgraded 41 mm front forks with NEAS (New Electrically Activated Suspension) from the previous year's RR and a steering damper was fitted as standard. A larger 21 liter fuel tank was added.

Engine Type: 16-valve, 4-stroke, DOHC in-line four
Power: 106.00 HP @ 10500 RPM
Torque: 53.8 ft. lbs. @ 10000 RPM
Displacement: 749.00cc (45.70 cubic inches)
Compression: 9.8:1
Bore x Stroke: 70.0 x 48.7 mm (2.8 x 1.9 inches)
Fuel System: Carburetion
Ignition: Full Transistor
Cooling System: Air-Cooled
Gearbox: 6-speed (1 down, 5 up)
Final Drive: Chain
Dry Weight: 388 pounds
Seat Height: 755 mm (29.7 in)
Overall Height: 1,200 mm (47.2 in)
Overall Length: 2,130 mm (83.9 in)
Overall Width: 620 mm (24.4 in)
Ground Clearance: 140 mm (5.5 in)
Wheelbase: 1,425 mm (56.1 in)
Front Tire: 110/80-18
Rear Tire: 140/70-18
Front Brakes: Hydraulic twin disc with dual opposed piston calipers
Rear Brakes: Single disc, hydraulic
Fuel Capacity:5.54 gallons

GSX-R750 (J) 1988

First major revision. New chassis design, engine revisions and body work. Introduction of a new short-stroke version of the oil-cooled engine, now displacing 748 cc. Engine had 73 mm bore and 44.7 mm stoke and could achieve higher engine speeds (13,000 rpm redline indicated, but rev limited engaged at 12,500 according to the Suzuki shop manual). Internal engine dimensions changed to accommodate the new bore and stroke. This engine used larger valves and carburetors then previous years. Mikuni model BST36SS carbs were 36 mm diameter and featured vacuum operated slides. The slide cross section resembled the shape of a slingshot. A larger clutch was used on the short stroke engine with 6 springs. New styling, and twin black silencers. Wheels were now a 17-inch (430 mm) diameter, three spoke design and used a 160/60VR17 in the rear and 120/70VR17 in the front. Slingshot graphic first appeared on the bodywork. Forks now used a cartridge design and were 43 mm in diameter. The second generation model was heaver than the first but had a stiffer frame and more power.

Engine Type: 16-valve, 4-stroke, DOHC in-line four
Power: 112.00 HP (81.8 kW)) @ 11000 RPM
Torque: 54.9 ft. lbs. @ 10000 RPM
Displacement: 748cc (45.64 cubic inches)
Compression: 10.9:1
Bore x Stroke: 73.0 x 44.7 mm (2.9 x 1.8 inches)
Fuel System: Carburetion
Ignition: Digital/Transistorized
Cooling System: Air-Cooled
Gearbox: 6-speed (1 down, 5 up)
Final Drive: Chain
Dry Weight: 429.9 pounds
Seat Height: 830mm (32.7 in.)
Overall Height: 1135mm (44.7 in.)
Overall Length: 2055mm (80.9 in.)
Overall Width: 720mm (28.3 in.)
Ground Clearance: 130mm (5.1 in.)
Wheelbase: 1400mm (55.1 in.)
Front Tire: 120/70 VR-17
Rear Tire: 160/60 VR-17
Front Brakes: 320mm dual hydraulic disc
Rear Brakes: 220mm single hydraulic disc
Fuel Capacity: 5.54 gallons

GSX-R750 (K) 1989
1989 Suzuki GSX-R750

Minor changes such as: modified lower bodywork, changes to graphics and silver exhaust silencers. Magazines reported that the exhaust manifold now featured small chamfers on the collector for increased ground clearance. Cycle magazines also reported a change to the rear shock mounting geometry and front fork length to improve ground clearance. Graphics/paint schemes varied slightly between global markets. US models were available in blue/white and red/white schemes. The SACS acronym decal, located on the lower body work of the blue/white models, changed from a diagonal lettering to a straight lettering

GSX-R750R 1989
Limited edition racing homologation model. The redesigned engine reverted to the original long stroke (70 x 48.7mm) configuration. The crankcase, crankshaft connecting rods and clutch were upgraded to serve as a ready to race platform. The RR also received new 40 mm Slingshot carbs and 4-into-1 exhaust pipe, close ratio gearbox, braced rear swing arm , single seat unit and 19L aluminium fuel tank. Model was never sold in the US(wikipedia)

There is no many change (in my opinion) specially for design and looks appear.. so what next in 1990 Suzuki GSX-R 750?.. to be continued to Suzuki GSX-R 750 History part 3...


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