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The 1978 Yamaha SR500 and 1982 Yamaha XJ900 Seca represent two chapters in Yamaha's storied history.
The 1978 Yamaha SR500 from Japan was powered by a 499cc SOHC single producing 32hp at 6500rpm. Weighing 158.0kg (348 lbs) and with a seat height of 800mm, it was aimed at standard riders.
The 1982 Yamaha XJ900 Seca by contrast offered 853cc of DOHC inline-4 power, delivering 88hp at 8500rpm. Tipping the scales at 230.0kg (507 lbs) with a top speed of 210km/h (130 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
The 1978 Yamaha SR500 from Japan was powered by a 499cc SOHC single producing 32hp at 6500rpm. Weighing 158.0kg (348 lbs) and with a seat height of 800mm, it was aimed at standard riders.
The 1982 Yamaha XJ900 Seca by contrast offered 853cc of DOHC inline-4 power, delivering 88hp at 8500rpm. Tipping the scales at 230.0kg (507 lbs) with a top speed of 210km/h (130 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
Specifications Comparison
| 1978 Yamaha SR500 | 1982 Yamaha XJ900 Seca | |
|---|---|---|
| Displacement | 499 cc | 853 cc |
| Power | 32 hp | 88 hp |
| Torque | 37.0 Nm | 74.0 Nm |
| Cylinders | 1 | 4 |
| Top Speed | 145 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 158.0 kg | 230.0 kg |
| Wet Weight | 172.0 kg | 248.0 kg |
| Seat Height | 800 mm | 810 mm |
| Wheelbase | 1390 mm | 1490 mm |
| Fuel Capacity | 12.0 L | 20.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1978 Yamaha SR500 laid the groundwork with 32hp, while the later 1982 Yamaha XJ900 Seca pushed output to 88hp. From a collector's perspective, the 1978 Yamaha SR500 holds the edge with a 7/10 rating. Either way, both are worthy additions to any Yamaha collection.
About the 1978 Yamaha SR500
The 1978 1978 Yamaha SR500 packs a 499cc SOHC single engine with 32hp into a standard motorcycle package from Yamaha.
Full 1978 Yamaha SR500 Profile →About the 1982 Yamaha XJ900 Seca
Introduced in 1982, the 1982 Yamaha XJ900 Seca features a 853cc DOHC inline-4 engine producing 88hp, establishing itself as a notable standard motorcycle.
Full 1982 Yamaha XJ900 Seca Profile →