Originally posted by mercman:
(pinging). The sound you here is the pistons and cylinder head vibrating. The danger
is blown head gaskets distorted pistons rods and rod bearings.
Using an gas with a much higher octane then required causes deposits on the combustion cambers and valves.
jeff
sound of detonation is thesound of the fuel exploding. Causes, all those you mentoined, but include, cracked rings, eroded piston heads, melted pistons, burned valves, mented valves, connecting rod failure, crankshaft failure, and crankcase failure.
High octane fuel also has a lower BTU content than lower octanes, thats the reason some people notice less power with 93 vs. 87.
