Engine and Performance
The new FZ-S gets a thoroughly revised version of the old motor- and now comes with fuel injection. However at 149cc, it’s 4 cee cees down from the outgoing FZ, and also results in the slightly lower overall power 13.1PS at 8,000rpm and the slightly lower overall torque 12.8Nm at 6,000rpm. The new engine is 1.5 Kg lighter, thanks to lighter moving parts like the lightened crankshaft and pistons. Yamaha have also reworked the shape of the combustion chamber, retuned the intake port, and altered the placement of the two valves for better overall combustion – all of this and much more come under the new Blue Core technology that are set guidelines for overall engine & frame lightness which collectively aim for improved performance and economy.
The bike immediately feels a lot more refined all throughout the rev range, what with smoother and lighter components acting within the engine. Power isn’t a rush to the head, but is delivered in a more linear manner- a marked improvement over the last FZ. Mid-range is the most potent bit of the new FZ’s performance platter, with one running on a liner surge of power. After 90 kmph, she loses a fair bit of steam, but continues to trundle it way to an indicated 115kmph.
Low end grunt isn’t too bad either, with the new FZ reaching 60kmph from rest in less than 6 seconds. One more highlight has to be the light clutch action which makes piloting it in stop-go traffic a breeze. The gearbox is a slick shifting, five speed job with similar gear ratios and the only variation being the change in the rear sprocket which is a 41-tooth cog now – compared to 40 on the last one.
Ride, Handling, Dynamics & Efficiency
Back to the old FZ again, the dynamics and handling were fantastic for its days. The new one doesn’t disappoint either. With the mono shock and the Diamond frame chassis working in tandem with the fat 140/60-R17M/C spec rear rubber at the back, the bike feels amazingly planted and confidence inspiring both in the corners as well as in a straight line – gives that familiar FZ feel again. It’s tough to get oneself in a tough spot with this bike, unless you’re the really adventurous sort. Actually, the sorted dynamics outshine the performance any given time, with the bike being rock stable even on sustained triple digit speed runs.
The ride is slightly on the stiffer side, with the rear mono shock adjustable though, this issue can be easily resolved. Yamaha says the new engine delivers 14 per cent better economy than the old FZ. Yamaha also claim a 29 per cent cut in CO2 emissions, 33 per cent lower HC+NOx and 20 per cent lower NOx from the new engine.
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