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make 2002 scrambler 50 to 90

  #1  
Old 05-25-2017, 08:29 PM
Weekend Warrior
Thread Starter
Join Date: May 2017
Posts: 1
Default make 2002 scrambler 50 to 90

what is the difference between the polaris 50 and 90 engine wise? carb, topend, reeds, cdi???? what can i do to make my 50 out run a stock 90
 
  #2  
Old 05-25-2017, 10:31 PM
user493's Avatar
Moto Psycho
Join Date: May 2008
Location: Michigan
Posts: 8,747
Default

I don't know much about the kids quads but doubt you can make a 50cc outrun something with an engine that's 80% bigger. That would be like my 500 outrunning a 900cc quad. I don't see it happening.
 
  #3  
Old 05-26-2017, 06:30 AM
old polaris tech's Avatar
Polaris ATV Expert
Retired and loving it!
Join Date: Jun 2008
Location: North Texas
Posts: 24,352
Default

Bore and stroke are different. You can't just swap pistons and cylinders to make a 50 into a 90.If you want something to out run a 90,buy a larger machine.

1.58x1.54 (40x39.2 Scrambler 50
mm)
2.05x1.65 (52x42 Scrambler 90
mm)
 

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