ignition coil info needed

[hillbilly]

i just want to know whats the difference between 3ohm coils and 5ohm coils,and dont say 2ohms lads,would it be better having 5 ohm coils with dyna ignition,or do you need different plugs,would it be to hot a spark and maybe burn holes in pistons,i dont know were im at with them,i do prefer points and condensers.but if it makes the bike run better,then thats what i want.

[Pigford]

Dyna info says use either 3 or 2.2 ohms....... This won't effect the "heat" of the spark at the plug

Only the plug grade changes from hot to cold range. This is to do with the tip insulation - the porcelain bit around the inner electrode.