This years mods will be limited to installing .020 milled head, and a 34mm carb on a 93 tboss 250. The bore is a fresh .020, along with a stock pipe. The primary spring has slightly higher engagement but according to polaris' graph the final rate is equal to stock,"sorry forgot the color". Question is, what jetting do I start with? The carb came with a 200main. I suppose I could bolt it in and give it a try.
Thanks Doc