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 than 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 four spring clutch was used on the short stroke motor . 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 heavier than the first but had a stiffer frame and more power.
New styling smooth and aerodynamic styling with big changes – Bigger valves, new high-lift camshaft, 36 mm contant-velocity semi-flatslide carbs and up rated suspension, wheels and tyres, 73 x 44.7 mm short-stroke motor, thinner piston rings and bigger main bearings. These new changes produced 112 hp at 11,000 rpm and model a dry weight of 195 kg. The lowered ground clearance and the adoption of 17″ wheels which offered only a slim margin of error.
The 1988 Suzuki GSX-R750 was examined and changed, from the engine to the chassis: The fairing was redesigned for 5.7% less frontal projection and 11% lower drag. Shortened 1400mm wheelbase, lightweight aluminium alloy frame with 45mm box tube main section and the cast swing arm pivot offered 60% more ridity. Front fork stanchion tubes were increased to 43mm diameter with variable damper adjuster type inner rods. Full floating rear suspension with new linkage and needle bearings for smoothness. Opposed 4 piston brake calipers, new weight-saving hollow-typecast wheels and wide Michelin radial tyres.
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 line 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.
The style was smooth and curved to the Suzuki GSX-R 750 1988, almost everything was new, compared to the previous model Suzuki GSX-R 750 1987.
Motor short stroke 73.0 x 44.7, thinner piston rings, bearings larger bed, larger valves, new camshaft high lift, 36 mm carburetors and suspensions, wheels and tires were increased.
This engine was a 112 horses at 11,000 rpm, to propel a dry weight of 195 kg. Unfortunately, he lost significant ground clearance (escape) and had to adopt 17 “wheels that offered only a small margin of error.
Every detail of the chassis and engine of the GSX-R was reassessed for the Suzuki GSX-R 750 1988. The fairing was redesigned with 5.7% less frontal projection and 11% lower. The wheelbase of 1,400mm made to the GSX-R, more compact bike class.
The aluminum alloy 45 mm tube incorporated a box in the main section and the swing was 60% stiffer. Front fork bars increased with 43 mm diameter bars internal adjustment variable dampers.
The back of the Suzuki GSXR 750 1988 offered full floating suspension with new linkage and needle bearing for smoother. Brake calipers 4 opposed pistons, new weight-saving hollow hollow typecast lighter wheels and Michelin radial tires.
SACS engine distinctive Suzuki GSXR 750 1988, air cooled, oil hose received a larger diameter and a 20% increase in the coolant flow, improving cooling efficiency by 48%.
The red area on the Suzuki GSXR 750 1988 started at 13,000 rpm. The engine stroke diameter changed from the previous 70 about 48.7mm × 73 × 44,7mm shorter, reducing loss of mechanical movement.
The new Slingshot carburetors Suzuki GSXR 750 1988, were equipped with dampers light for a more responsive throttle. Another important addition was the incorporation of SACI (Suzuki Condensed Air Intake) system that takes fresh air from the inlet air in the front of the fairing, to the entrance of the carburetor, to maximize the charging efficiency cylinders.
Specifications Suzuki GSX-R 750 1988
Suzuki year code
1988: J
Colours
Pearl Cool White / Marble Parsec Blue (9SR)
Pearl Cool White / Pearl Twinkle Red (7JJ)
Dimensions and curb weight
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)
Ground clearance: 130 mm (5.1 in)
Empty weight: 195 kg (429 lbs)
Engine
Engine Type: 4 stroke, air and oil cooled, DOHC
Number of cylinders: 4 cylinders
Calibre: 70.0 mm (2.756 in)
Stroke: 48.7 mm (1.917 in)
Displacement: 749 cc (45.7 cu in.)
Carburetor: MIKUNI BST38SS
Air filter: Paper element
Starting system: Electric
Lubrication system: Wet Carter
Drivetrain
Clutch: Wet, multiplate oil
Transmission: 6-speed constant Gear
Gearshift pattern: 1 reduction, 5x
Primary reduction ratio: 1.744 (75/43)
Gear Ratio:
First: 2,866 (43/15)
2nd: 2,058 (35/17)
3rd: 1,650 (33/20)
4th: 1,428 (30/21)
5th: 1,260 (29/23)
High: 1,120 (28/25)
Final reduction ratio: 2.800 (42/15)
Drive chain: RK TAKASAGO 50GSVZ1 or DAIDO DID 50VA7, 108 links
Chassis
Front suspension: Telescopic, coil springs, adjustable preload, damping oil 10 compression settings and 8 rebound damping adjustments.
Rear suspension: articulated type, coil springs, damping oil / gas, adjustable preload, 4-way, Suzuki “Full Floater” system.
Fork travel: 120 mm (4.7 in)
Rear wheel travel: 136 mm (5.35 in)
Steering angle: 30 °
Caster angle: 65º 30 ‘
Filmed: 94 mm (3.7 in)
Turning radius: 3.1 m (10.2 ft)
Front brakes: Double disc brake
Rear brake: single disc brake
Front Tire Size: 120/70 ZR 17, tubeless
Rear Tire Size: 160/60 ZR 17, tubeless
Electrical Equipment
Ignition Type: Electronic ignition (Transistorized)
Ignition timing: 7th BTDC at 1500 rpm
Spark plug: NGK CR10EK
Battery: 12 V 36.0 kC (10 Ah) / 10 HR
Generator: Three-phase AC generator
Main fuse: 30A
Fuse: 15/15/15/10/10 A
Headlight: 12 V 60 / 55W x 2
Flashing light 12 V 21 W
Light: 12 V 5 W
Brake / Rear: 12 W x 2 5/21 V
Speedometer Light: 12V 1.7W
Light Tachometer: 12V 1.7W x 2
Neutral indicator light: 14V 3W
Indicator light beam: 14V 3W
Indicator light turn signal: 14V 3W
Oil pressure indicator light: 14V 3W
Capabilities
Fuel tank, including reserve: 21 l (5.5 US / Imp gal)
Engine oil:
oil change: 3,000 ml (3.2 / 2.6 US / Imp qt)
with filter change: 3.300 ml (3.5 / 2.9 US / Imp qt)
Repair: 3.900 ml (4.1 / 3.4 US / Imp qt)
Fork oil 419 ml (14.2 / 14.8 US / Imp oz)
Refrigerant: 2,550 ml (2.7 / 2.2 US / Imp qt)
