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FZT06

Ténéré 4 cylinders for Dakar

A cold morning on the outskirts of Paris, a small cross off the beaten path, a pilot with the gaudy colors Sonauto, that warms the muscles ahead of Dakar, caracollando riding his Yamaha “XT 600 Ténéré”: all normal, You'll say. So it seems: But beneath the huge reservoir of “Ténéré” beats a heart that in common with single-cylinder engine of the Queen of the desert did not own anything. It is a four cylinder water cooled, derived from the motor 20 valve “FZ 750”.

It's too early to say whether this fantastic “750” It will be the first January ' 86 at via delta legendary African Marathon, Although the meticulous care of details (apparent as well in the photos of our top secret) clearly demonstrate that this is not

a simple experiment the French importer, but something more which cannot but have had the approval of the parent company. Let us not forget that the same “Ténéré” was born from a “idea” Jean Claude Olivier, General manager of the Yamaha Sonauto and seeded riders for Paris-Dakar.

Therefore, the new franco-Japanese beast, that TUTTOMOTO presents here exclusively, could be the winning weapon in Japanese, determined this year to snatch the BMW Crown of Queen of Africa. Power is not discussed, to test the reliability in the desert.

the motor of the “FZ 750” It was significantly lightened and he worked on the camshafts to reduce power, while increasing elasticity at low and mid. The rear suspension is monocross.

No secret: made for the Paris Dakar, the “Tènéré” 4 cylinders offers many interesting solutions, some guessed by looking at the pictures of our “scoop”. The frame, For example, is that of the FZ, However, reduced in length.
Carburetors, in an elevated position and well protected, receive the gasoline through a mechanical pump. The mammoth tank is basically double and acts well as lateral protection for the liquid cooling radiator. The collection is extremely compact and functional, suitable for off-road.

au-dakar-1986-avec-son-monstre-motorise-par-a-4-cylindres-de-fz-750-archives-mr--70441-8-zoom-article

Text TuttoMoto Enzo Caniatti

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J.C. Olivier Dakar 1986

J.C. Olivier in mechanical version, working on Yamaha 600 to Charbonnier during the Dakar 1986.

Yamaha YZE-920-1

Yamaha FZT 900 Dakar 1987

Three straight victories in the BMW decided in 1986 the Honda, that to return to success at the Paris-Dakar rally was necessary to play the card of two-cylinder motor. The only choice to keep up in long stretches of desert where most top speed allows two cylinders to buy a house edge that they take shelter from every retrieve while agile «mono». The Yamaha decided, Instead, to confirm the single cylinder after it was breezy the construction of a twin-cylinder to be entrusted to the French team.
The response of Jean Claude Olivier, team manager of Sonauto, was the manufacture of a prototype driven by the engine of FZ 750 twenty valves. An adventurous project, who did turn up their noses to leaders of the House of Iwata, but not to the point of rejecting the idea of pilot who in 1985 had arrived for second in Dakar.
The four-cylinder engine for the desert has begun work late and the test bench of the giant French-Japanese enduro was precisely the slopes of Paris-Dakar. It was a single copy, and get him into the race it was Jean Claude Olivier.
Doing so gave up departing at every chance to win a ride a motorcycle that was providing Yes a power of 90 HP but whose weight was about 270 pounds in running order.

In 1986, JCO ended the race 12th, pulled over 10 hours behind the winner, but brought the bike up to Dakar.

An important milestone that convinced Olivier to insist on the road taken. And so these days has been completed the Yamaha FZ 900 T Evolution 1, the bike which Olivier and Serge Bacou will lead to far more warlike purposes of those Dakar enlivened the expedition ' 86. At first glance you understand that this is a completely new bike without any piece in common with last year's experimental version.
You have done a great job of lightening and end the engagement was awarded by dry weight slightly less than 200 kg (20 pounds lighter than last year) and above all, a subdivision of the masses which is nearly optimal 45% the front and the 55% the retro-train.
The frame now has an aluminium bottom cradle (removable) and to eliminate the problems of spin ratio was decreased the maximum power for the benefit of better dispensing. In addition, always at the direction of Olivier, was increased the engine capacity.
The result is a total displacement of 911 CC and a power not exceeding 85 HP, 53 of which are available at 4.000 RPM.
In tests carried out in August in the desert of Tenere FZ 900 T has shown it can travel in a straight line at a speed of more than 160 km/h (as an indication, the «mono» ' 87 in the hands of Peak did not go beyond the 135 km/h) and on a technical course around Agades late against the mono did not go beyond the second one-and-a-half kilometer.
Even the tires have made huge progress in both grip under acceleration, lateral stability and still life. Conscious of the progress of the four cylinders, that could be the surprise of the Paris-Dakar ' 87, but also of his handicap (weight, encumbrance, mechanical complexity) Olivier has preferred to follow as last year two parallel roads. He and Serge Bacou will guide the FZ 900 T while Thierry Charbonnier and (in all likelihood) the American Danny La Porte will be racing with the single winner of the Rally of the Pharaohs with Franco Picco. You never know…

Source motosprint

Moto-journal-JANVIER-1985

Cover Magazine Moto Journal 1985

MOTO journal N ° 685 del 24 January 1985