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12/3
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  1. Vintage Ski Doo's
    So, my '70 Olympique 299 single is giving me more grief than normal. Here's the problem; from idle the engine backfires just before the clutch engages and won't rev up. Now here is the background; typically this machine runs well but will occasionally foul a plug, put a new one in and it would...
  2. Vintage Ski Doo's
    I'm doing a restoration on an oly 12/3 and need to replace piston rings as there is a bit of play in the cylinder. I figure I may as well replace the piston at this point as well. Bearings and cylinder walls all appear to be in great shape. I'm just having a hard time finding a piston and ring...
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