Overboost Posted February 12, 2009 Report Share Posted February 12, 2009 so far, my machine is bone stock 87. I am going to be doing some pro circuit pipes and k&n open dual filters. thats it. what baseline jetting is applicable? from what I been reading, it sounds like a 300 and a 25 but am not sure. want to get it right so I can go form there without making things go boom my riding temp is going to be around 50-80, but I would say mainly above 60...mostly trails, some sand. I dont like sand, makes the motor overheat. I been reading alot of jetting options on here but just wanted to get some actual input before I take the plunge, not much room for error. Quote Link to comment Share on other sites More sharing options...
Powerstroke Posted February 12, 2009 Report Share Posted February 12, 2009 300 mains sounds close but I would recommend 27.5 pilots. Good luck and welcome to the site. Quote Link to comment Share on other sites More sharing options...
Overboost Posted February 12, 2009 Author Report Share Posted February 12, 2009 300 mains sounds close but I would recommend 27.5 pilots. Good luck and welcome to the site. excellent, sounds like I will be on the way to getting it all set up for alot of DS 650 stomping riding this summer. Quote Link to comment Share on other sites More sharing options...
CBAIER1206 Posted February 13, 2009 Report Share Posted February 13, 2009 My wifes bike is exactly like you described and she is running 25 pilots and 330 mains. Keep in mind, every bike is different. IMO the 27.5 pilot is gonna be too rich for your bike and make it bog down low. Lots of people on here with ported cylinders run a 25 pilot. I would start with 320-330 mains and go down if you need to...remember it's better to start rich and work down then to run lean initially and cause damage to your engine. Just my .02 Quote Link to comment Share on other sites More sharing options...
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