I am builing a 686 grizzly with the 11/1 wiseco and satge one hot cam. I am at an elevation of 2000 feet and am wondering what would be a good baseline to start with. I thought I would start with the dj160 and go from there. It calls for a dj155 with an aftermarket exhaust and air filter. With the aftermarket cam I would assume that I would have to go to a larger jet. Any insught would be great.

 

do you have port work if so I would try a 170 and 175 and if not I would start with a 160 and 165 to start with

 

No, I don't have any porting done. I have ordered the 165 and 170 already so I'll start with the 165 and see how it goes. Thanks for the help.