Why drilling carb jets might be your best tuning move
Thinking about drilling carb jets is usually something that happens late on a Saturday night when you've finally finished a big engine mod and realize the thing is running lean. Maybe you just threw a pod filter on an old bike or put a high-flow exhaust on your go-kart, and now it's coughing every time you crack the throttle. You go online to order a jet kit, see the thirty-dollar price tag and the five-day shipping estimate, and look over at your workbench. You've got a drill. You've got some brass. Why not just make the hole bigger yourself? ...