Detonation Damage Repair

Detonation occurs when excessive heat and pressure in the combustion chamber enable the air fuel mixture to autoignite. Instead of a single flame kernel in the combustion chamber there will now be several flame fronts. When these flame fronts cross they produce an explosive force, which constitutes to the pressure within the cylinder rising. This results in shock waves passing through the rod bearings, head gasket, pistons and piston rings that generates overloading and can be heard as a ‘pinking’ noise. Also the chamber itself will sustain damage, shown below, that can induce further detonation due to Pre-Ignition (see bottom of page). Causes of Detonation: · Poor quality fuel · Compression ratio too high · Ignition timing over advanced · Engine overheating · Lean fuel mixture · Spark plug incorrect · Excess carbon deposits in the combustion area

For more information on Detonation Damage Repair talk to Amac Engineering