Yamaha FZ400R

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Yamaha-FZ400R-84--1.jpg
Yamaha FZ400R
Manufacturer
Production 1984
Class Sport Bike
Engine
Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Bore / Stroke 55.9mm x 55.9mm
Compression ratio 12.2:1
Horsepower 59.94 HP (44.7 KW) @ 12500RPM
Ignition TCI Digital
Transmission 6 Speed
Suspension Front: Telescopic forks
Rear: Monoshock
Brakes Front: 2x 282mm discs
Rear: Single 210mm disc
Front Tire 100/90-16
Rear Tire 120/80-18
Seat Height 29.88 inches (759 mm)
Weight 166 kg / 366 lbs (dry), 172.0 kg (wet)
Recommended Oil Yamalube 10w-40
Fuel Capacity 18 Liters / 4.75 gal
Competition Suzuki GSX-R400
Honda CBR400R
Manuals Service Manual

The Yamaha FZ 400R was a Four stroke, transverse cylinder, DOHC, liquid-cooled Sport Bike motorcycle produced by Yamaha between 1985 and 1988. Claimed horsepower was 59.94 HP (44.7 KW) @ 12500 RPM.


Engine[edit | edit source]

The engine was a Liquid cooled cooled Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.. The engine featured a 11.5:1 compression ratio.

Chassis[edit | edit source]

It came with a 100/90-16 front tire and a 120/80-18 rear tire. Stopping was achieved via 2x 282mm discs in the front and a Single 210mm disc in the rear. The front suspension was a Telescopic forks while the rear was equipped with a Monoshock. The FZ400R was fitted with a 18 Liters / 4.75 gal fuel tank. The bike weighed just 166 kg / 366 lbs.


1985 Yamaha FZ 400R[edit | edit source]

The FZ 400R has an Inline four engine, liquid cooled, a large bore combined with a short stroke. The frame is reminiscent of the FJ 100, with rectangular steel tubes wrapping around the sides of the engine instead of over the top.


1988 - 1994 Yamaha FZ 400R[edit | edit source]

The reason why so many Yamaha FZR 400R`s ended up on track was due to the excellent handling and ease of use. The Yamaha FZR 400R`s liquid-cooled, four-cylinder, DOHC engine revs to an impressive 12.500 rpm, but like most other four cylinder 400R`s nothing really happens below 9500 rpm.

Photos[edit | edit source]

Overview[edit | edit source]

FOR A CHANGE, THE MOTOR ISN'T THE MESSAGE For many motorcycles, it's the engine that leaves an indelible impression, that engraves itself into memory. How could you forget the yowling CBX Six or the quaking torque of an XR1000? That'd be difficult, but it's all too easy for the inline-Four engine in Yamaha's FZ400R to slide from mind. That's not to say the FZR doesn't leave its imprint. After riding it, you're filled with wonder that any motorcycle can steer so precisely, so positively, and you're left with a new standard for motorcycle handling. A spec sheet doesn't give a clue that the chassis, not the engine, is the center of interest for the FZR. The engine has all the trendy features: 16 valves, liquid cooling, a large bore combined with a short stroke. But in practice, the engine isn't impressive. It pulls well at low speeds, goes slightly flat in the middle, then picks up again at the top of the rev range. It's a perfectly usable powerband on the racetrack, but more midrange would be welcome on the street. Looking at the chassis doesn't fully build expectations, either. The frame is reminiscent of the FJ1100's, with rectangular steel tubes wrapping around the sides of the engine instead of over the top. Tire sizes are the same as for the other 400s (16-inch front, 18-inch rear), and steering geometry is only slightly quicker (26-degree head angle and 4 inches of trail). Whatever the difference, however, it tells you that it's there the first time you whip the bike through an S-bend. The chicane at the end of the front straightaway at Sugo Circuit, for instance, can be taken at around 80 mph on a good streetbike. It requires hard braking, then a quick flick to the right and a hard flop to the left, with no time for a gradual transition. Every other motorcycle we rode at Sugo was work through the chicane, but the FZR sailed through so easily and precisely it left us wondering why we weren't going faster. This magical handling hasn't come without a few penalties. The FZR does, after all, have a sticker on the side that says "Pure Sports." The seat is thinly padded, if well shaped, and the suspension is stiff enough to make the wheels chatter on a bumpy road. Steering lock is about half that of other streetbikes, so a simple task like turning around in a driveway can be a chore. Still, we're willing to forgive the FZR far worse than these minor defects in exchange for handling that rivals that of GP machines.




Make Model Yamaha FZ 400R
Year 1984
Engine Type Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder.
Displacement 399 cc / 24.3 cu-in
Bore X Stroke 54 x 43.6 mm
Cooling System Liquid cooled
Compression 11.5:1
Induction 4x Mikuni BDST32 carburetors
Ignition TCI Digital
Starting Electric
Max Power 50 hp @ 11500 rpm )
Max Torque 3.7 kgf-m @ 10000 rpm
Transmission 6 Speed
Final Drive Chain
Front Suspension Telescopic forks
Rear Suspension Monoshock
Front Brakes 2x 282mm discs
Rear Brakes Single 210mm disc
Front Tire 100/90-16
Rear Tire 120/80-18
Dry Weight 166 kg / 366 lbs
Fuel Capacity 18 Liters / 4.75 gal