ign resister

[elwood]

hey guys I have a book to help me wire my 50 F1 pick-up.
the book calls for a ign resister in line, do I need one ?
im running a 12 volt system with a 12 volt coil.
so, iv got a resister laying around, would this be the wright one ?
thanks..

[fortyfords]

If your running points then you need the resister or a coil with a resistance built into it which makes a cleaner set up. Don't buy a chrome coil as it seems a lot of those go bad for some reason.

[George/Maine]

That .8 would be ok with 6 volts, but 12 volt mostly use 1.5 OHMS.

[Butch11443]

You have a 12 volt coil so shouldn't need a resistor.
Butch

[elwood]

I was kinda thinking like Butch.
Any more thoughts on the resister ?

[BUBBAS IGNITION]

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Interesting answers for sure.

The best of all worlds on a 12 volt system is to use a 1.5 ohm resistor and a 1.5 ohm ignition coil.
The design here is to split the wattage of the system between two pieces of the system. A 12 volt system with 1.5 plus 1.5 would flow 4 amps.
Amps ( 4 amps) times X the volts = Wattage or in this case 48 watts.
Watts is the horsepower (so to speak) of the ignition spark etc..
By using two parts we divide so each has a wattage of 24 watts allowing a lower heat build up. ( instead of the coil having 48 watts to deal with)

Although we do have a 4 ohm ignition coil made just for us , we only use it on two coil systems and 4 cylinders allowing a longer than normal ( V8s) coil saturation time etc.
They don't work well on V8 applications.

Your .8 resistor will work with a 1.5-2.0 ohm ignition coil quite well ...

[George/Maine]

I see that .8ohm resister is for msd coils 12 volts.
Not all 12 volts coils need a resister,best check brand specs.