 ki-Doo dropped
their Type 809 three cylinder 800 engine into the new CK3 chassis last
season, and while it proved to be a torque monster in the low end and midrange, the peak
power output and bandwidth was lacking. Ski-Doo followed up with calibration improvements
that seemed to make a significant improvement, but was this the answer or just a quick
fix? Now for '99 we're told that the Mach Z (and Mach 1) will return to an end outlet
pipe design; for what reason?
Rich Daly of Dyno Port (315-258-5618) successfully campaigned
a Rotax 800 triple in the asphalt drag circuit this past Summer, and with the performance
of the '98 Mach Z he wanted to
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show us what could be done with the Rotax 800.
Adding to the fun, Ski-Doo made available two more models using a single pipe version of the
800 engine, a Formula III 800 and the Grand Touring 800, both of which could be fitted with
triple pipes. Other than the carb and clutch calibration to go with the different pipes, these
engines appear to be identical to the triple piped Mach Z.
Rich started with a single pipe Formula III 800, which Ski-Doo told us would produce very
similar horsepower to the triple piped 700 Mach I, placing it in the 130+ HP area. The engine
was jetted for the air temperature and the engine pulled 132.2 HP at 7700 RPM. Rich noted
that the stock jetting was very good right out of the box.
The type 809 engine is also
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used in the triple piped Mach Z, so a set of stock Ski-Doo triple
pipes and muffler were installed,
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