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Technical / Should I bore or stay stock? rebuilding my CR125

« on: March 14, 2010, 08:08:24 PM »

I have an 02 CR125 and am rebuilding top and bottom.  My cylinder wall and piston are scratched but I didn't lock it up.  The rod needs replaced also.  So I was considering boring to a bigger size.  I'd like to go as big as I can and get as much power out of it as I can.  But if boring it out is going to mean it will take a lot more work and money then I'd rather just stay stock.  I can do everything for about $500 (crank kit, piston, seals, gasket, new cyclinder, etc)  but I would like to just have my cyclinder bored and get a larger piston. 
  If I do bore....is that all I need to do?  Do I need to worry about doing work on the powervalve too?  How about the crank, any work there?  Thanks for the help!!!!