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  1. Sledding - General Discussion
    For the fourth year in a row, a Skidoo snowmobile powered by the Rotax 600 ACE engine has won the SAE Clean Snowmobile Challenge in Houghton, MI. This year was our chance to shine with our turbo Miller cycle lean-burn MXZ Sport 600 ACE. SUNY Buffalo's turbo diesel-powered Polaris was...
  2. 4-TEC Turbo Talk
    The early 600 ACE prototypes said "4-TEC" on the mag side engine cover, so I guess I can post this here. I was disappointed in the initial stages of researching this by the lack of information regarding the results of the few turbo 600 ACE sleds that supposedly exist out there. We don't have...
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