What kind of motor does a Yamaha YZ400F have?
One of the keys to the first YZ400F’s success was its incredible motor. Nakayama borrowed heavily from Yamaha’s extensive road race knowledge in designing the new machine’s high-tech motor. The YZF used a five-valve Genesis head from an FZR street bike and super lightweight components to give the bike a then unheard of 11,000-rpm rev ceiling.
Can you get the Yamaha YZ WR 400 online?
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What kind of suspension did the 1977 YZ400 have?
Take a 1975 MX400, paint it Yellow and add the spedo air forks and you end up with the 1976 YZ400C (I only saw 1, I swear it felt like an MX400). A great leap forward in frame, engine and suspension design, the 1977 YZ400 was only lacking in it’s ability to track corners because of the round tubular swing arm that caused too much flex.
Why was the Yamaha YZ400 not able to track corners?
A great leap forward in frame, engine and suspension design, the 1977 YZ400 was only lacking in it’s ability to track corners because of the round tubular swing arm that caused too much flex. The monoshock was now encased inside the Monocoque frame that ran under the gas tank.
When did the Yamaha YZ400 dirt bike come out?
Honda and Kawasaki had nothing in the Open class, while Yamaha and Suzuki had nothing for the coming of the Maico 490. On the off-road side, Yamaha expanded the IT line to include an IT400. 1980–’81: Yamaha quickly acted to correct the problem and presented the YZ465. It was a great bike in every way.
What kind of head does a Yamaha YZ400F have?
The YZF’s most unique feature was its five-valve Genesis head, first pioneered on Yamaha’s FZ750 a decade before. The high flow head design was mated to a super lightweight slipper piston and very short stroke configuration to give the bike a very free revving feel.
What kind of gas does a Yamaha YZ 4 stroke use?
The new YZ 4-stroke engine is designed to run on 92 octane gasoline. This unusual stoichiometric accomplishment is achieved by employing a very unique carburetor and digital (computer microchip) ignition system. Throttle position, along with the engine RPM, determines the ignition timing.
What’s the difference between a YZ 250 and YZ 400?
The differences are the YZ 400 carries an oil tank near the steering head, some of the engine/lubricating oil is carried in the front part of the frame, and the YZ 400 has stiffer fork and shock springs. Rake, trail, forks, shock, and swingarm linkages are the same as the YZ 250.