Yamaha XJ650 Maxim

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Yamaha XJ650
Manufacturer
Yamaha
Also called XJ650 (reduced effect), XJ 650 (reduced effect), XJ650 Maxim, XJ650 Turbo, XJ 650 Turbo, XJ 650 Maxim, XJ 650
Production 1982
Class Standard
Engine
Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder,
Compression ratio 9.2:1
Top Speed 120 mph
Ignition Transistorized
Spark Plug NGK BP7ES `80-83[1]
Battery YUASA YB12A-A `80-83[1]
Transmission 5 Speed
Frame Tubular steel dual cradle frame
Suspension Front: 26mm Air assisted telescopic forks
Rear: Duel Kayaba shocks, 5-way adjustable spring preload
Brakes Front: Single 300mm disc
Rear: Drum
Front Tire 3.25 H19
Rear Tire 130/90 H16
Seat Height 744 mm / 29.3 in
Weight 203 kg / 450 lbs (dry),
Fuel Capacity 13 Liters / 3.4 US gal
Manuals Service Manual


It could reach a top speed of 120 mph.

Engine

The engine was a Air-cooled cooled Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder,. The engine featured a 9.2:1 compression ratio.

Drive

Power was moderated via the Wet Multiplate; 7 Steel 8 Friction.

Chassis

It came with a 3.25 H19 front tire and a 130/90 H16 rear tire. Stopping was achieved via Single 300mm disc in the front and a Drum in the rear. The front suspension was a 26mm Air assisted telescopic forks while the rear was equipped with a Duel Kayaba shocks, 5-way adjustable spring preload. The XJ650 Maxim was fitted with a 13 Liters / 3.4 US gal fuel tank. The bike weighed just 203 kg / 450 lbs.

Photos

Yamaha XJ650 Yamaha XJ650

Overview

Yamaha XJ 650 Maxim












Maxim: Legend in its own time, now for the price of a song, almost. □ In 1980 the Bright-Think Bulb at Yamaha was glowing hot enough to heat the Great Outdoors. Yamaha delivered its basic high-wattage idea  the 650 Maxim. What if, some Yamaha people had asked, Yamaha builds a high-performance 650 motorcycle and gives it "special" styling? Although other makers had dabbled with the cruiser get-up laid over basic Japanese four-cylinder motorcycles, no other manufacturer had made the million-dollar commitment: design a brand-new four-cylinder, and build it specifically as a special. At Yamaha the special became the standard. Three years later, after the wide proliferation of special styling, it's easy to forget what a landmark bike the Maxim was. The 650 was striking, controversial, sensational, and wildly successful in showrooms. Succeeding models were refinements; the 1982 XJ650J had a more comfortable cut to its handlebar, an air-adjustable fork, and a more luxurious seat. For stoplight aggression, the Maxim was well armed. The air-cooled, twin-cam 650 engine was a genuine mid-12 quarter-mile streaker. The engine looked lithe and athletic too; Yamaha made it narrow by locating the alternator piggyback—behind the cylinder block and above the gearbox rather than hanging the works on the end of the crankshaft. The Maxim had another amazing feature for a motorcycle touted as a high-performance piece: shaft drive. Years later, the Maxim is a cruiser classic. Other companies have produced bodacious knock-offs of the 650 Maxim, imitations that suffer from excess ("If they like slightly stepped seats, we'll give 'em real split-level housing"). It's too bad the Maxim was obscured when manufacturers blanketed the market with cruisers. Now Yamaha has decided to turn up the spot lights on the XJ650J Maxim or is it turn on the flashing blue light? The price has plummeted from $2999 in 1982 to $2189, and for the savings you should be able to cruise Main Street for the next 10 years. A decade down the road, the Maxim may well be a genuine classic of the 1980s a bright idea that stood the test of time.


Make Model Yamaha XJ 650 Maxim
Year 1982
Engine Type Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder,
Displacement 653 cc / 39.8 cu-in
Bore X Stroke 63 х 52.4 mm
Cooling System Air-cooled
Compression 9.2:1
Induction 4x 32mm Hitachi carburetors
Ignition Transistorized
Starting Electric
Max Power 71 hp / 51.8 kW @ 9400 rpm
Max Torque 57 Nm / 42 lb-ft @ 7500 rpm
Clutch Wet Multiplate; 7 Steel 8 Friction
Transmission 5 Speed
Final Drive Shaft
Gear Ratio 1st 2.187 (35/16) 2nd 1.500 (30/20) 3rd 1.153 (30/26) 4th 0.933 (28/30) 5th 0.812 (26/32)
Frame Tubular steel dual cradle frame
Front Suspension 26mm Air assisted telescopic forks
Front Wheel Travel 142 mm / 5.5 in
Rear Suspension Duel Kayaba shocks, 5-way adjustable spring preload
Rear Wheel Travel 97 mm / 3.8 in
Front Brakes Single 300mm disc
Rear Brakes Drum
Front Tire 3.25 H19
Rear Tire 130/90 H16
Seat Height 744 mm / 29.3 in
Dry Weight 203 kg / 450 lbs
Fuel Capacity 13 Liters / 3.4 US gal
Consumption Average 47 mpg
Standing ¼ Mile 12.6 sec / 107 mph
Top Speed 120 mph

References

  1. 1.0 1.1 2019 Western Power Sports Catalog. Western Power Sports. 2019.