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  1. 01 blowing way to much white smoke Help

    Raptor 660 General
    Hey guys first time posting on this site been reading alot of your threads though awesome stuff really helped me out. Anyways my question is i have recently took a buddies o1 660 under my arm, he came to me with it running but would stall if you took the choke off whether it was warmed up or...
  2. What size jets?

    Raptor 660 General
    I got an 05 660. The silencer in the exhaust was removed by the previous owner. And I have a 10:1 high compression piston. K&n filter also. Elevation is around 100ft or so. It has stock jets right now and mid to high performance is pretty bad( back firing, popping) so what size jets should I get?
  3. oring and washer found in carb bowl?¿?¿?¿

    Raptor 660 Maintenance
    I went to take my carbs apart on my 660 to clean them because my bike was a little rough on idle. when I took the bowl off I was surprised to find a small oring and washer in the bottom. I've looked at diagrams and what not and I really can't see where they might go. I do see a small washer...
  4. tuning issues , maybe more?

    Raptor 660 General
    04 660 , 10.75 piston, stage 1 can no airbox and k&n filter, .5 inch carb space. I'm having trouble getting this dialed in. I'm suspecting head issues but don't know. I'm at 5509 ft in Colorado. I have a problem with upper mid to top end power. It falls off and starts to POP. If I'm in neutral...
  5. Newbie there - got lots of issues

    660 Specific "How-to"
    Most of the issues are with the Raptor 660. I picked up a non-loved 2005 raptor 660 a couple of months ago and I've spent the past month reviving the thing - swapped out all the bushings/bearings/seals, etc. I've now moved on to getting the thing running. So here's the deal - when I picked it...