TECHNICAL INFORMATION
Yamato
302 motor for UIM class OSY.400
"The world's largest motorboat racing cetegory"
Cubic
Capacity: 396cc • Type: 2-cylinder / 2-stroke
Horsepower: 33 HP @ 6,600 rpm.
Maximum Torque: 26.8 ft-lbs
Bore x Stroke: 2.598x x 2.283 (66 x 58mm)
Induction Sysytem: Reed Valve, 1 set
Cooling
System: Ram water pressure from propeller
Carburettor: 1 Venturi, 28mm (Mukini or Yamato)
Ignition: Transistor magneto • Starting: Rope
Fuel: Regular gas, min. 86 octane •
Fuel Mix: 30:1
Fuel tank capacity: 0.6 gal. (2.3 liters)
Weight: 41.4 Kgs • Transom height: 13.5 inches
Motors are
stadium raced and then factory rebuilt prior to delivery for circuit racing.
Motors are rady to race and come with:
• Operating Manual • Starting Rope • Shear Pins •
Spark Plugs
Kill switch connections fitted if required.
CONTACT US FOR A QUOTE!
PROTOTYPE YAMATO 402 / 4-stroke motor
No specifications available.
There are no plans to introduce this motor in the stadiums at the moment.
World OSY.400
Champions line-up at Oulton Broad
Left to right: Kevin Turner (1993 & 94), Craig Speller (1999, 01, 02 & 03), Steve Cook (2000) and Andrea Ongari (2006).
Photo: Fred Emeny
Tony Knights gets filled in ! Photo:
Fred Emeny