Rich Daly and his "Big Bore Killer" Ski-Doo XP800 was at it again, tearing 'em up at the Brantling Snowmobile Hill Climb!

After shredding it at Song Mountain Hill Climb to win King Of The Hill, Rich won the 800 mod, 900 mod, and 1000 mod at Brantling.

Blazing 182 HP @ 8000 RPM on pump gas, Rich's Ski-Doo XP800 Snowmobile, clutched and tuned by the Mad Scientist himself, sports a Dyno Port Single Pipe, Dyno Port Trail Can, V-Force Reeds, Porting, And Chuckaroo Heads. This is a serious trail/race machine!

Congratulations to the whole Dyno Port crew on their successes, and be sure to catch Rich "The Mad Scientist" Daly this weekend, Saturday, March 28, at the Toggenburg Mountain Winter Sports Center for the Snowmobile Hillclimb "CLIMB FOR THE CURE!"

Rich Daly had never set up a drag sled when he picked up a copy of Straightline Racer last spring. As the owner of Dyno Port, an aftermarket pipe and engine mod company, he hadn't spent much time dabbling in clutch work, and none on the suspensions of the sleds he worked on. But after a quick read, he was hooked. "I'm pretty mad at you guys," he told us in a mid-season interview. "You made it sound real easy to build a Prostock 800 sled. I figured I could put a strong motor in and use big horsepower to compensate for my inexperience with suspension. It doesn't work that way."

Tuning The Rotax 800 Triple

Ski-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?

Tech Feature: Dyno Tuning the Ski-Doo MX Z 600

-Snow Tech Winter 1998-99, Page 98

 The new cylinder reed intake 600cc (Rotax type 593) twin from Ski-Doo marks a significant switch away from the rotary intake Rotax twins we have enjoyed for so many years.