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Note: Turbo unit on XJ650L Seca Turbo is NOT very reliable

Manufacturer: Yamaha……..TOP

Model: XJ650R Seca, XJ650 Maxim, XJ650L Seca Turbo

Years Made: 1982 Seca, 1980-1983 Maxim, 1982-83 Seca Turbo
Style: Sport Standard (Seca), Custom Cruiser (Maxim), Sport (Seca Turbo)
Engine Type:
653cc Inline-Four
mm/ “
Weight: 430lb HP: 73
Top Speed: 125mph MPG: 40
New Cost:
$2,699 (1980) – $2,699 (1981) – $2,999 (1982) – $3,399 (1983) – $4,999 (1982-83 Turbo)
Average Used Costs:
Low $924 Medium $1,107 High $1,450



UMG Says: Shaft drive four which lacks build quality and has some clutch, gearbox and valve problems after the first 30,000 miles. Lack of power between 4-6000rpm’s normal. As are rotten exhausts, poor brakes and leaking head gaskets. Metz’s are good tyres. Rare turbo version shifts okay but heavy and complex (as in expensive to replace) engine. Anything with more than 50 thou on the clock’s going to be lots of trouble, with chronic electrics, starting and engine hassles.

IGM Says (XJ550 Seca, XJ550 Maxim, XJ650 Seca, XJ650 Maxim, XJ700 Maxim): Yamaha’s first four-cylinder mid-sized engine series, which powers all these bikes, set new standards for performance when introduced in 1981 and has proven rugged and dependable over the years. The same basic engine design is still used in the 1998 Seca II.