1981 Suzuki GSX400

 

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1979-1987 Suzuki GSX 400E Full Specifications

Get to know the 1979-1987 Suzuki GSX 400E in exquisite detail with our meticulously crafted motorcycle specifications tables.

Click or tap on a navigation pane below to find your way through our highly detailed, categorised 1979-1987 Suzuki GSX 400E specifications.

 

1979-1987 Suzuki GSX 400E Performance Specifications Table

AttributeValue
Minimum turing radius2,400 mm
 

1979-1987 Suzuki GSX 400E Dimensions Specifications Table

AttributeValue
Overall length2,075 mm
Overall width755 mm
Overall height1,075 mm
Wheelbase1,385 mm
Seat height815 mm
Ground clearance155 mm
Dry Weight175 kg (without fuel and fluids)
 

1979-1987 Suzuki GSX 400E Frame Specifications Table

AttributeValue
Rake / Caster angle62 °
Trail length105 mm
 

1979-1987 Suzuki GSX 400E Engine Specifications Table

AttributeValue
Engine capacity / displacement399 cc
Engine configuration4-stroke, air-cooled, DOHC
Bore and Stroke67 mm x 56.6 mm
Compression ratio10 : 1
Intake air filtrationPolyurethane foam element
Electric startyes
 

1979-1987 Suzuki GSX 400E Cylinder Head Specifications Table

AttributeValue
Cylinder compression142 psi - 199 psi
Intake valve seat width0.9 mm - 1.1 mm
Exhaust valve seat width0.9 mm - 1.1 mm
 

1979-1987 Suzuki GSX 400E Valves and Springs Specifications Table

AttributeValue
Intake valve lift7.0 mm
Intake valve stem to guide clearance0.025 mm - 0.052 mm
0.35 mm (service limit)
Intake valve head diameter0.5 mm (service limit)
Intake valve seat width0.9 mm - 1.1 mm
Exhaust valve lift7.0 mm
Exhaust valve stem to guide clearance0.040 mm - 0.067 mm
0.35 mm (service limit)
Exhaust valve head thickness0.5 mm (service limit)
Exhaust valve seat width0.9 mm - 1.1 mm
Intake valve spring free length35.5 mm (outer spring service limit)
31.9 mm (inner spring service limit)
Exhaust valve spring free length35.5 mm (outer spring service limit)
31.9 mm (inner spring service limit)
 

1979-1987 Suzuki GSX 400E Valve Train Specifications Table

AttributeValue
TypeDohc
Drive typeChain driven
Tappet clearance (cold)0.08 mm - 0.13 mm
 

1979-1987 Suzuki GSX 400E Camshaft and Timing Specifications Table

AttributeValue
Camshaft journal diameter21.959 mm - 21.980 mm (outer)
Oil clearance0.032 mm - 0.066 mm
0.150 mm (service limit)
 

1979-1987 Suzuki GSX 400E Crankshaft Specifications Table

AttributeValue
Crankshaft run-out0.05 mm (service limit)
 

1979-1987 Suzuki GSX 400E Cylinder and Piston Specifications Table

AttributeValue
Cylinder bore diameter67.000 - 67.015 mm (bore)
67.080 mm (bore service limit)
Piston diameter66.945 mm - 66.960 mm (outer)
66.880 mm (outer service limit)
Top piston ring to groove clearance0.180 mm (service limit)
Second piston ring to groove clearance0.150 mm (service limit)
Piston pin bore diameter18.002 - 18.008 mm
18.030 mm (service limit)
Top piston ring groove width1.21 mm - 1.23 mm
Second piston ring groove width1.21 mm - 1.23 mm
Piston ring oil groove width2.51 mm - 2.53
Top piston ring end gaps0.10 mm - 0.30 mm
0.7 mm (service limit)
Second piston ring end gaps0.10 mm - 0.30 mm
0.7 mm (service limit)
Cylinder to piston clearance0.050 mm - 0.060 mm
0.120 mm (service limit)
Connecting rod small end diameter18.006 mm - 18.014 mm (inner)
18.040 mm (inner service limit)
 

1979-1987 Suzuki GSX 400E Clutch and Primary Drive Specifications Table

AttributeValue
Reduction ratio2.714 : 1 (76 / 28)
Clutch typeWet multi-plate type
Clutch spring free length38.4 mm (service limit)
 

1979-1987 Suzuki GSX 400E Transmission Specifications Table

AttributeValue
Type6-speed constant mesh
Gear ratio1st gear = 2.461 : 1 (32 / 13)
2nd gear = 1.777 : 1 ( 32 / 18)
3rd gear = 1.380 : 1 (29 / 21)
4th gear = 1.125 : 1 (27 / 24)
5th gear = 0.961 : 1 (25 / 26)
6th gear = 0.851 : 1 (23 / 27)
Gear shift pattern1-down, 5-up
 

1979-1987 Suzuki GSX 400E Final Drive Specifications Table

AttributeValue
Final drive ratio2.750 : 1 (44 / 16)
Chain typeDAIDO DID50UB
Number of chain links104 links
 

1979-1987 Suzuki GSX 400E Lubrication Specifications Table

AttributeValue
System typeWet sump
 

1979-1987 Suzuki GSX 400E Fuel System Specifications Table

AttributeValue
Fuel tank capacity14.5 litres
Reserve fuel tank capacity3 litres
 

1979-1987 Suzuki GSX 400E Carburetion Specifications Table

AttributeValue
Idle speed1,100 ± 50 rpm
Carburetor typeMIKUNI BS34SS, twin
Identification number44202
Pilot screw1 1/2 turn
Pilot jet42.5
 

1979-1987 Suzuki GSX 400E Ignition System Specifications Table

AttributeValue
TypeBattery ignition (for General) Fully transistorized (for the others)
Spark plug typeNGK D8EA/DR8ES-L or NIPPON DENSO X24ES-U/X24ESR-U
 

1979-1987 Suzuki GSX 400E Front Suspension and Steering Specifications Table

AttributeValue
TypeTelescopic, oil dampened
Front axel travel140 mm
Oil volume145 ml (left fork dry fill)
145 ml (right fork dry fill)
 

1979-1987 Suzuki GSX 400E Rear Suspension Specifications Table

AttributeValue
TypeSwing arm, oil dampened spring 5-way adjustable
Rear axel travel100 mm
 

1979-1987 Suzuki GSX 400E Front Brake Specifications Table

AttributeValue
Front brake typeDisc brake
 

1979-1987 Suzuki GSX 400E Rear Brake Specifications Table

AttributeValue
Rear brake typeInternal expanding
 

1979-1987 Suzuki GSX 400E Wheels and Tyres Specifications Table

AttributeValue
Front wheel size18 inch
Front tyre size3.00S18 4PR
Rear wheel size18 inch
Rear tyre size3.50S18 4PR
 

1979-1987 Suzuki GSX 400E Electrical Charging Specifications Table

AttributeValue
Battery voltage rating12 volts DC
Battery capacity12 ampere hour (Ah)
 

 

 

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