Should you run better gas with a 3 degree keyway?

[pdrmike]

When running the 3-4 degree keyways to advance the timing in the Apex's, should you run a better grade fuel? If so why? I know we run CR10EK plugs which burn colder, which in turn I guess burns slower?

 

[KnappAttack]

I would run better fuel. Plugs have nothing to do with the speed of combustion. Ignition timing does!

 

[87gtNOS]

Advanced ignition timing can increase spark plug tip temperature 50+ degrees. An increase in tip temp can contribute to pre-ignition.

Good idea along with your advance in timing is to run 1 heat range colder plug, hence the CR10EK.

 

[Turk]

With a 2 dgree key your still fine on regular. anything over you gotta run premium if you want your engine to live; especially on long pulls.

 

[pdrmike]

Thanks for the expertice and advice, Mike