P16. Which spark plug must be used in a conversion from gasoline to alcohol ?

Normally the conversion from gasoline to alcohol are carried through modifying the times of the injection and advance the engine ignition of the vehicles with eletronic injetion system. In the case of carbureted vehicles, substituting the original components (gicleurs, injectors, etc...) for components of bigger calibrations and still modifying the advance of ignition through the deliverer. In this type of conversion normally it does not have alteration of internal components engine (pistons, headstock, etc...), however in accordance with the alterations of the ignition advance the temperature of end ignition spark plug can modify (to be higher) in this in case it is necessary to use a spark plug of more cold thermal degree. Otherwise does not have necessity to modify the spark plug thermal degree.