Suzuki
GSX-R 750 model history
1988—1995
| I have tried to tell the Suzuki GSX-R 750 model history on this
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1988 Suzuki year code: J
The
styling went smooth and curvaceous with this model with almost
everything being new - 73.0 x 44.7mm short-stroke motor, thinner
piston rings, bigger main bearings, bigger valves, new high-lift
camshaft, 36 mm contant-velocity semi-flatslide carbs and up rated
suspension, wheels and tyres. All this produced 112 hp at
11 000 rpm to propel a dry weight of 195 kg. Unfortunately, it
lost significant ground clearance (via the exhaust) and the adoption
of 17" wheels which offered only a slim margin of error.
Every detail of the chassis and engine of the GSX-R down to the
single bolt was reevaluated for the new 1988 model. The fairing
was redesigned for 5.7% less frontal projection and 11% lower
drag. The wheelbase at 1 400mm made the GSX-R the most compact
bike in the class. The lightweight aluminium alloy frame incorporated
45mm box tube main section and the cast swig arm pivot resulted
in 60% more ridity.
Front fork stanchion tubes were increased
to 43mm diameter with variable damper adjuster type inner rods.
The back end featured full floating suspension with new linkage
and needle bearing for smoothness. Opposed 4 piston brake calipers,
new weight-saving hollow-typecast wheels, and wide Michelin
radial tyres became new standard equipment.
The distinctive air-cooled
with SACS engine received larger diameter oil hose and less restrictive
joints for 20% increase in the coolant flow and the large 15 row
cooler improved the cooling efficiency by 48%. The red zone started
at 13 000 rpm. Engine bore and stroke changed from the previous
70 x 48.7mm to shorter stroke 73 x 44.7mm to reduce reciprocating
motion mechanical loss. The new Slingshot carburetors were equipped
with lightweight throttle valves for increased throttle responsiveness.
Another important addition was the incorporation of SACI (Suzuki
Condensed Air Intake) system bringing fresh air from ducts on
the front of the fairing to the carburetor intake for maximizing
cylinder charging efficiency.
Type: GR77B
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1988 Suzuki GSX-R750, Blue/White
1989 Suzuki year code: K
Ground clearance was improved with the GSX-R750K and overall
it was a little more developed but otherwise, much the same.
The 4-into-2 exhaust pipe introduced a year earlier received
stylish stainless steel covering over the mufflers. Gear ratio
revisions in 3rd, 4th and 5th gears enabled improved power control
and secondary gear ratio was lowered, together with 5mm increase
in the wheelbase, all combining for better sports riding on
highways. The brake master cylinder controlled the 4 piston
brake calipers featured four-way adjustability.
The luscious and expensive limited edition GSX-R750R was released
to Japanese market with a return to the long-stroke motor of
the F/G/H models. The RK had exotic internals, 40 mm
carbs and produced around 120 hp and weighted 187 kg.
Type: GR77B
1989 Suzuki GSX-R750 color options: Pearl Cool White / Marble Parsec Blue (9SR),
Pearl Novelty Black / Urban Gray Metallic (3CG), Pearl Cool White / Pearl Twinkle Red (7JJ)
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1989 Suzuki GSX-R750, Pearl Cool White / Marble Parsec Blue (9SR)
 1989 Suzuki GSX-R
750
Overall Length: 2 055 mm (80.9 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 100 mm (43.3 in)
Wheelbase: 1 400 mm (55.1 in)
Dry Weight: 195 kg (429 lbs)
Engine: Air and oil-cooled 748 cc inline-4, DOHC, 16 valves.
112 hp (81,8 kW) @ 11 000 rpm, 68 Nm @ 7 000 rpm
Click on the image for larger format.
|
 1989 Suzuki GSX-R
750
Overall Length: 2 055 mm (80.9 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 100 mm (43.3 in)
Wheelbase: 1 400 mm (55.1 in)
Dry Weight: 195 kg (429 lbs)
Engine: Air and oil-cooled 748 cc inline-4, DOHC, 16 valves.
112 hp (81,8 kW) @ 11 000 rpm, 68 Nm @ 7 000 rpm
Click on the image for larger format.
|
 1989 Suzuki GSX-R
750
Overall Length: 2 055 mm (80.9 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 100 mm (43.3 in)
Wheelbase: 1 400 mm (55.1 in)
Dry Weight: 195 kg (429 lbs)
Engine: Air and oil-cooled 748 cc inline-4, DOHC, 16 valves.
112 hp (81,8 kW) @ 11 000 rpm, 68 Nm @ 7 000 rpm
Click on the image for larger format.
|
500 limited edition (some claim 1000) GSX-R750R ( the 'Double R') serving as ready-to-race
platform was released to Japanese market. The newly redesigned
engine reverted to the original long stroke (70 x 48.7mm) configuration.
Crankcase, crankshaft connecting rods and clutch were among the
critical areas receiving more attention necessary for the race
duty. The 'Double R' also received new 40mm Slingshot carburetor
and 4-into-1 exhaust pipe as well as close ratio gearbox, rear
swing arm with sub frame, new aerodynamic fiber with large air
intake duct, solo seating with race number box and 19 liter aluminium
fuel tank as standard equipment. The dry weight measured, 187 kg (411 lbs).
Type: GR79B
Engine: R714
1989 Suzuki GSX-R750R color: Marble Parsec Blue / Pearl Still White (3JK)
|
 1989 Suzuki GSX-R
750 R
Overall Length: 2 055 mm (80.9 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 100 mm (43.3 in)
Wheelbase: 1 400 mm (55.1 in)
Dry Weight: 187 kg (411 lbs)
Engine: Air and oil-cooled 748 cc inline-4, DOHC, 16 valves.
120 hp (87,6 kW) @ 11 000 rpm, 68 Nm @ 7 000 rpm
Click on the image for larger format.
|
 1989 Suzuki GSX-R
750 R
Overall Length: 2 055 mm (80.9 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 100 mm (43.3 in)
Wheelbase: 1 400 mm (55.1 in)
Dry Weight: 187 kg (411 lbs)
Engine: Air and oil-cooled 748 cc inline-4, DOHC, 16 valves. 120 hp (87,6 kW) @ 11 000 rpm, 68 Nm @ 7 000 rpm
Click on the image for larger format.
|
1990 Suzuki year code: L
The
GSX-R750L was possibly the best of the oil-cooled models.
Big changes included inverted forks and, importantly, a return
to the long-stroke motor (the short-stroke wasn't so good in race-trim
but was OK for the road). Other modifications included a
4-1 exhaust, steering damper, 38 mm carbs (up 2 mm on the standard
K yet 2 mm smaller than the RK), smaller valves, new conrods,
lighter pistons, large capacity oil pump, larger curved oil cooler
and the rear rim became the 'standard' 17" x 5.5" item. Power was up to 115 hp at 11 000 rpm while weight was down to 193
kg.
Drawing on the invaluable experiences gained racing, the 1990
model received many of the features of the race version GSX-R750R
at an affordable price. The same long-stroke engine (70 x 48.7mm)
of the 'Double R' became standard, with new pistons to match the
new combustion chamber design in the cylinder head and strengthened
connecting rods. New 38mm Slingshot carburetor, Curved-core Radial
Flow oil cooler and stainless steel 4-into-2-into-1 exhaust per
set were adopted. Both 41mm inverted tube front fork and remote
reservoir rear shock became fully adjustable. Rear wheel rim was
widened and equipped with Michelin radial tyres.
Type: GR7AB
1990 GSX-R750 color options: Pearl Still White / European Blue No.2 (3SL),
Pearl Still White / Marble Italian Red (3RZ), Pearl Novelty Black / Urban Gray Metallic (3CG)
|
1990 Suzuki GSX-R750, Blue/White
1991 Suzuki year code: M
The
1991-year's GSX-R750M weighed 15 kg more than the previous model!
Some Suzuki sales brochures didn't even bother to quote a weight
figure. The weight factor alone sends this bike to the back
of the GSX-R pack. New aerodynamic fairing with slanted
nose to reduce frontal drag, with distinctive headlight cover
and running lights.
The seat was enlarged and twin tail lamp design
graced the backend. The oil-cooled SACS engine received internal
refinement of adopting one rocker arm per valve from the previous
of one per two valves, stronger valve springs and an exhaust cam
with 7 degrees less duration to give 116 hp.
1991 Suzuki GSX-R750 color options: Pearl Still White / European Blue No.2 (3SL), Pearl Still White / Marble Italian Red (3RZ), Pearl Novelty Black / Urban Gray Metallic (3CG)
|
1991 Suzuki GSX-R750, Blue/White
1992 Suzuki year code: N
New liquid-cooled engine debuted for the 1992-year's GSX-R750WN
(W meant Water-cooling) to match and reduce the increasing heat
under severe racing conditions. However, the invaluable seven
years of oil-cooling experience was not abandoned completely and
the new engine featured the best of both worlds: oil injection
piston cooling and water-cooled oil-cooler were among the features
incorporated into the new engine to achieve compactness and reliability,
enabling cylinder pitch reduction by 10mm and crankcase width
by 57mm.
Headlight cover became cheaper/lighter plastic rather than the
expensive glass of the previous model. New 5-sided aluminium
pipe frame with sand-casted steering head section and cast swing
arm pivot increased the torsional resistance by 24%. The new monocoque
swing arm was pressed arms of asymmetrical design working with
new link type rear suspension. In isolation, a good bike but the
other manufacturers had better bikes to offer. Dry weight
was still 208 kg and power was up to 118 hp at 11 500 rpm
|
1992 Suzuki GSX-R750, Blue/White
 1992 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 208 kg (458 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp @ 11 500 rpm, 73 Nm @ 8 500 rpm
Click on the image for larger format.
|
 1992 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 208 kg (458 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp @ 11 500 rpm, 73 Nm @ 8 500 rpm
Click on the image for larger format.
|
1993 Suzuki year code: P
The second year or the water-cooled engine, the 1993-year's
GSX-R750WP received mostly cosmetic changes.
The liquid-cooled
DOHC 4 valve engine was designed to lower the center of gravity
by positioning the crankshaft low. The valve angle was set at
16 degrees, 4 degrees less than that of the final air-cooled
SACS engine Thinner valve stems and Direct-action valve train
also contributed to make this engine a compact unit excelling
at high rpm, achieving high compression ratio of 11.8, the highest
in this class. SCAI (Suzuki Condensed Air Intake) system allowed
optimal intake of fresh air to the engine under all conditions.
|
 1993 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 208 kg (458 lbs)
Engine: Liquid-cooled 747 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
 1993 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 208 kg (458 lbs)
Engine: Liquid-cooled 747 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
1994 Suzuki year code: R
A
full engine, gearbox and chassis redesign came with the GSX-R750WR
including improved engine internals, revised gears and forks,
stainless steel header pipes and six-piston brakes. Weight
was down to 199 kg - a point where the 130 hp GSX-R1100 was
some 8 years earlier! 6 piston brake calipers and ultawide
180/55ZR17 rear tyre graced the R that weighed in 9 kg dry lighter
than the 1993 production model. The same 1994 model continued
to be available in 1995.
Although
standard production model, the GSX-R750SPR was designed to serve
also as the Superbike racing platform and boasted performance
features direct from the factory racing parts bin. Wide-mouthed
TRM40 carburetor, SCAI air intake system, 4-2-1 exhaust system
with increased flow, special 6-speed close-ratio gearbox, magnesium
engine covers, aluminium water pump, thin-walled 43 mm inverted
tube front fork, lighter and more rigid swing arm.
Suzuki produced 200 SPR bikes in 1994 , 50 of them went toFrance and the rest, 150 bikes, to Germany. Six of them were imported into the UK by Paul Denning of Crescent Suzuki. He raced one and sold the other five. One of these and my bike was featured in Superbike Magazine in '94.
The standard GSX-R750WR was available in following colors:
|
 1994 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 199 kg (439 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
 1994 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 199 kg (439 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
 1994 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 199 kg (439 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
 1994 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 199 kg (439 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
 1994 Suzuki GSX-R
750
Overall Length: 2 070 mm (81.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 199 kg (439 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves. 118
hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
|
 1994 Suzuki GSX-R
750 SP
Overall Length: 2 095 mm (82.5 in)
Overall Width: 730 mm (28.7 in)
Overall Height: 1 135 mm (44.7 in)
Wheelbase: 1 440 mm (56.7 in)
Dry Weight: 198 kg (436 lbs)
Engine: Liquid-cooled 749 cc inline-4, DOHC, 16 valves.
118 hp (86.1 kW) @ 11 500 rpm, 78,46 Nm @ 9 500 rpm
Click on the image for larger format.
|
1995 Suzuki year code: S
In the fifth year since the introduction of the water-cooled engine,
the 1995 model featured cosmetic changes such as the silver colouring
treatment on the outer of the inverted tube front fork (from blue
of 1994 model) and new overall colouring schemes.
The standard
model did not lack in performance, as it continued with main features
introduced with the 1994 model: the lightweight and rigid aluminium
frame with thin-walled 43 mm inverted inner tube fork: engine
cover parts of magnesium; aluminum water pump; 6-piston front
brake calipers; the swing arm featuring aluminum box section sub
frame, etc.
The 1995 model was also the last GSX-R750 to feature
the traditional aluminium double-cradle frame.
|
 
 Next Page: Suzuki GSX-R750 1996—1999 
All the larger motorcycles made for the Japanese home market are power restricted.
Prior to 1993 the maximum horsepower were the following:
 250cc class: 45hp
400cc class: 59 hp
750cc class: 77 hp
over 750cc: not allowed
The new limits for the models built in 1993 and after, were:
250cc class: 40hp
400cc class: 53 hp
750cc class: 77 hp
over 750cc: allowed, but restricted to 100 hp.
Bikes with more powerful engines are and were made for export only. However, if a Japanese private person wants to buy an unrestricted bike, they are allowed to import it from another country by themselves for private use... |
More: GSX-R750 brochures & adverts
More: All
Suzuki models
Sources:
http://www.onlygsxr.fsnet.co.uk/history1.html
http://www.adelaide.net.au/~millett/GSXR/gsxrlist.htm
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