So where did you hear that dung? The Polaris race shop has built several 600 mods this fall for snocross racing (the rules have changed this season from 800cc to 600cc in the mod class). I know some of the guys there and they have been very, very positive about this motor.
Have you seen the cutaway of this engine... bottom end is built like a brick sh** house. I think your information source needs to step away from the bong and walk away slowly.
Anything will go bye-bye if it isn't jetted correctly. Besides I highly doubt a motor that puts out 120 HP stock can't handle 8 more HP. If that's the case everyone's 600 HO will be grenaded after 3000 miles. In case you haven't noticed.....I'm calling bullshit. :frech32:
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