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Technical / KTM 85sx vs CR85 in 105cc supermini form

« on: March 18, 2010, 05:35:42 AM »

Just thought I'd see what the scoop is on how these two motors stack up against each other. I'm more interested in how they compare as bored 103cc engines really. I have a 100cc CR85 setup for in a roadracer and was thinking of building a new bike. Being out of it for a while I noticed the 85sx seems to be a pretty sweet motor with the power valve setup, so I'm kinda keen on using this engine!

I wondered if anyone knows how these two engine stack up in terms of power delivery, tuning potential and parts cost/availablility? Also is it possible to buy just the 85sx motor new and where from?