Suzuki GSX-R 400SP

Suzuki GSX-R 400SP
Manufacturer	Suzuki
Production	1986
Class	Sportbike
Engine	Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC
Compression ratio	11.5:1
Ignition	CDI
Transmission	6 Speed, constant mesh
Frame	Aluminum angular pipe double cradle
Suspension	Front: Telescopic forks Rear: Full floater swing arm, non-adjustable
Brakes	Front: 2 x Discs, 4 piston calipers Rear: Single disc, 2 piston caliper
Front Tire	110/90-16
Rear Tire	140/90-18
Wheelbase	1425 mm / 56.1 in
Seat Height	780 mm / 30.7 in
Weight	152 kg / 334 lbs (dry),
Recommended Oil	Suzuki ECSTAR 10w40
Fuel Capacity	15 Liters / 3.96 US gal / 3.3 Imp gal
Manuals	Service Manual

Engine

The engine was a Liquid cooled cooled Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC. The engine featured a 11.5:1 compression ratio.

Drive

Power was moderated via the Wet multi-plate.

Chassis

It came with a 110/90-16 front tire and a 140/90-18 rear tire. Stopping was achieved via 2 x Discs, 4 piston calipers in the front and a Single disc, 2 piston caliper in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Full floater swing arm, non-adjustable. The GSX-R 400SP was fitted with a 15 Liters / 3.96 US gal / 3.3 Imp gal fuel tank. The bike weighed just 152 kg / 334 lbs. The wheelbase was 1425 mm / 56.1 in long.

Photos

Overview

Suzuki GSX-R 400

The GSX-R400 (initially called GSX-R in Japan, internal model code GK71B) was released in March 1984. It was the first mass-produced light-weight racer replica with an aluminum cradle frame and a liquid-cooled inline-four DOHC engine with four valves per cylinder. The, in those days, amazing machine was based on Yoshimura's TT-F3 racer GS1000R. The competitors, Yamaha FZ400R and Honda CBR400R were 13—31 kg (29—68 lbs) heavier than the new and quick GSX-R. Compared to other bikes of the time, the GSX-R400 was very light and the 4-piston brakes at the front and the 2-piston rear brake was more than adequate for the 152 kg (334 lbs) light street racer. The bike was quick to handle, the engine with 4-1 exhaust system was powerful for its size and made the GSX-R the fastest bike in its class. With the maximum power output 59 hp and 152 kg (334 lbs( dry mass, the power/weight ratio (2,57 kg/hp) was even better than Suzuki's incredible 2-stroke racer, RG250 Gamma. The GSX-R400 started a new era, it was the fastest and best-handling 400cc bike ever made. The water-cooled inline-four four-stroke had double overhead camshafts and four valves per cylinder. The GSX400FW (presented the previous year) had the same principal engine specs but lower power output and the GSX-R400's new engine with its 66 kg (145 lbs) was 10 kg (22 lbs) lighter. 12,000 maximum revs.{| class="wikitable" |- !Make Model |Suzuki GSX-R 400 SP |- !Year |1986 |- !Engine Type |Four stroke, transverse four cylinder, DOHC 4 valves per cylinder. TSCC |- !Displacement |398 cc / 24.3 cu-in |- !Bore X Stroke |53 x 45.2 mm |- !Lubrication |Wet sump |- !Cooling System |Liquid cooled |- !Compression |11.5:1 |- !Induction |2 x AS27VW carburetors |- !Ignition |CDI |- !Headlight |12V 35/35w x 2 |- !Starting |Electric |- !Max Power |44 kW / 59 hp @ 11000 rpm |- !Max Torque |39.2 Nm / 4.0 kgf-m / 28.9 lb-ft @ 9000 rpm |- !Clutch |Wet multi-plate |- !Transmission |6 Speed, constant mesh |- !Final Drive |Chain |- !Primary Reduction Ratio |2.212 |- !Final Drive Ratio |3.066 |- !Gear Ratio |1st 3.166 / 2nd 2.125 / 3rd 1.631 / 4th 1.333 / 5th .173 / 6th 1.083 |- !Frame |Aluminum angular pipe double cradle |- !Front Suspension |Telescopic forks |- !Rear Suspension |Full floater swing arm, non-adjustable |- !Front Brakes |2 x Discs, 4 piston calipers |- !Rear Brakes |Single disc, 2 piston caliper |- !Front Tire |110/90-16 |- !Rear Tire |140/90-18 |- !Rake |27° 25' |- !Trail |96 mm / 3.7 in |- !Dimensions |Length 2090 mm / 82.3 in Width 710 mm / 28.0 in Height 1185 mm / 46.7 in |- !Wheelbase |1425 mm / 56.1 in |- !Seat Height |780 mm / 30.7 in |- !Dry Weight |152 kg / 334 lbs |- !Fuel Capacity |15 Liters / 3.96 US gal / 3.3 Imp gal

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