The 1978 Kawasaki Z1-R from Japan was powered by a 1015cc DOHC inline-4 producing 90hp at 8000rpm. Weighing 240.0kg (529 lbs) and with a seat height of 810mm, it was aimed at cafe racer 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 Kawasaki Z1-R | 1982 Yamaha XJ900 Seca | |
|---|---|---|
| Displacement | 1015 cc | 853 cc |
| Power | 90 hp | 88 hp |
| Torque | 82.0 Nm | 74.0 Nm |
| Cylinders | 4 | 4 |
| Top Speed | 215 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 240.0 kg | 230.0 kg |
| Wet Weight | 260.0 kg | 248.0 kg |
| Seat Height | 810 mm | 810 mm |
| Wheelbase | 1505 mm | 1490 mm |
| Fuel Capacity | 19.0 L | 20.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
These two machines serve fundamentally different purposes. The 1978 Kawasaki Z1-R is built for spirited café-racer style riding, while the 1982 Yamaha XJ900 Seca targets all-round versatility and everyday riding. On paper, the 1978 Kawasaki Z1-R's 90hp trumps the 1982 Yamaha XJ900 Seca's 88hp, but raw numbers don't tell the whole story in such different segments. Choose the 1978 Kawasaki Z1-R if you value spirited café-racer style riding; pick the 1982 Yamaha XJ900 Seca for all-round versatility and everyday riding.
About the 1978 Kawasaki Z1-R
Kawasaki released the 1978 Kawasaki Z1-R in 1978 with a 1015cc DOHC inline-4 powerplant making 90hp — a definitive cafe racer.
Full 1978 Kawasaki Z1-R 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 →