Up hill battle

nzeder · Post by **nzeder** » Fri Feb 15, 2013 8:45 pm

In my opinion I would not run a coil that requires a ballast resistor with electronic ignition. This way all the circuits have 12v all the time not 12v at cranking and 9v when running. But that is just my opinion.

ZMAD · Post by **ZMAD** » Fri Feb 15, 2013 9:16 pm

The ballast system overcomes the voltage drop while starting by sending the full voltage to a 9V coil briefly. Old cars without this system can struggle to start and nearly do when you realease the key. Starter motors draw huge currents on a cold engine. Its clever thinking really but yes a 12 volt coil simplifies wiring and can easily be fitted, just join wires together when you remove ballast.

B101 · Post by **B101** » Sat Feb 16, 2013 12:33 pm

ZMAD wrote:The ballast system overcomes the voltage drop while starting by sending the full voltage to a 9V coil briefly. Old cars without this system can struggle to start and nearly do when you realease the key. Starter motors draw huge currents on a cold engine. Its clever thinking really but yes a 12 volt coil simplifies wiring and can easily be fitted, just join wires together when you remove ballast.

i have that flame thrower coil but its 1.5 ohms and im not sure if it requires a ballast resistor.

nzeder · Post by **nzeder** » Sat Feb 16, 2013 1:50 pm

http://www.pertronix.com/prod/ig/flame/coils/chart.aspx

B101 · Post by **B101** » Sat Feb 16, 2013 4:51 pm

ok so i have a coils thats should be used on V8s. . . .

what are the down sides to this?