RC Nitro Engine Tuning Tips

Maximum Engine Power
To get the maximum power from a new engine, just follow these basic tips:

1. Ensure no air leaks - Make sure there are no air leaks by using high-temperature gasket or silicon sealants. Apply to areas such as the carburetor to the engine block, the exhaust manifold to the exhaust port of the engine block, and the back plate or pull-start mechanism against the engine block.
2. Proper motor break-in procedure - Run at least 3 tanks of fuel through the new engine, maintaining temperatures between 140 - 160 degrees. Vary the speed of the engine while running, but avoid going for top speed. Keep the body off during the break in process to keep the engine cool.
3. Proper running temperature - Basic guide is to keep engine temperatures between 200 - 210 degrees. But for more power you can lean out the engine a little more, and keep the temperature between 200 - 225 degrees.

source : rc-car tips