Tuning Tips for Nitro Engines in RC Cars (Part 1)

Tuning of nitro engines for racing is very essential activity that is essentially required for deriving optimum performance of the engine. If the engine is cleaned as well as if bottom end and top end are tuned properly then nitro engines give maximum performance and longer run time.

It is important to clear the engine of debris in preparation for race tuning. This debris or contaminants cause blockages in air flow or fuel intake. This may result in too rich or too lean mixture. Such an irregular flow of the mixture in to the engine does not give optimum performance. It may also cause stalling or starting problems of the engine. In order to clear the engine a step but step guidance is useful.

Raise idle to 1/4 turn. This will help prevent engine from stalling. This is the idle screw and not the low-end needle. Next you would need to check on the engine temperature. An engine temperature up to 150 degrees is required. A rich fuel mixture is required. In order to achieve this richen top end by a full turn. This should be done by holding the carburetor wide open and richening should continue till engine nearly stalls. This flushes out dirt, residue, or after-run oil from the carburetor and the engine as well.

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