View Full Version : CRF jetting

11-03-2006, 10:55 PM
I just bought a brand new viper frame CRF Hybrid. I am running the dirt bike carb, I had the head flowed, 13:1, and a TC pipe. Where should I start with my jetting (1000- 3000feet elevation)? Right now it shoots blue flames from the tail pipe and is hard to start.