You've got a new nitro engine. Learning how to break it in the right way is the shortest course to guaranteeing long-lasting performance, with the least amount of upkeep necessary. Failing to do so won't exactly get you with a messed up ride, but it leaves the doorway open for more frequent problems down the line.
What You Need
For your break-in, you need the following things:
- Around two hours of free time
- Three to five tanks of nitro fuel
- A clean, flat surface to run the car in
- Plenty of patience to do it the right way
Getting To Work
Start up the car and check to see if fuel is moving through the lines. If it doesn't reach the carburetor after five seconds, try priming the engine (i.e. place and release your finger over the tip of the exhaust for a couple of seconds). Make sure to release as soon as you see the fuel making its way accordingly. Holding on too long can cause the engine to flood and lock up.
The idea behind using five tanks of fuel is to increase the amount and duration of throttle with every run. Some advise making do with three, although we recommend running the full range and using five tanks.
On the first tank, give the engine a 1/4th throttle slowly (note on the slow throttle acceleration for all five tanks) for about two seconds, then hit the brakes. A nice trail of blue smoke should come from the exhaust. If not, try moving the air/fuel needle a quarter turn at a time to richen the fuel mixture until it starts blowing smoke. Continue the same quarter-throttle then braking until you run the tank to near-empty. Before going dry, pinch the fuel line (to turn engine off) and rest for fifteen minutes.
On the second tank, you do the same thing while going to half-throttle in three seconds. For the third, you do the same thing, then run three second counts while at half-throttle, before hitting the brakes. On the fourth, you go full throttle three seconds before braking. In your last tank, you do the same thing, except you hold the full throttle for an extra two seconds.
And with that, you've just successfully given your nitro engine a proper break-in. Go forth and be on your own merry way.
