If you have spent a few pounds on a shiney new engine its very important it is to take the time to break your engine in correctly.
Get it wrong and cut corners and the new engine won't last long and won't stand a chance of performing at its best, leaving you trailing behind the competition.
Old School method is tried and trusted for over 30 years of nitro engine history. Idling the engine without the wheels on the ground for at least a full tank of fuel and then running very slowly on rich settings. Read how to do it in the Old School section.
New School method has only been around for a few years but takes a different approach as to how to run in a new engine. Involves a different process of getting the engine upto temperature and letting it cool down without exposing the parts to rich settings. Read more in the new school section.