Coil voltage?
Senior User
Joined: Feb 2000
Posts: 125
Likes: 0
From: Coker Creek TN
Coil voltage?
I just installed a Mallory Promaster coil on my 390, the book recommends 4.6-6.9 volts with the key in the ON position, I have 4.6 with my stock wiring, when I put the resistor on that comes with the Mallory coil it drops down to 2.5 volts. Is this enough to run the engine or should I leave off the resistor? Thanks
Robert
Robert
Senior User
Joined: Feb 2000
Posts: 125
Likes: 0
From: Coker Creek TN
Coil voltage?
>That is too low. Did you bypass the stock resistor? If you
>have both in series, that would drop the voltage a lot.
Thats what I thought! But the instructions that come with the coil say to leave the orginal wiring and resistor wiring in place. Doesn't make sense. I've contacted Mallory and am waiting for one of their tech people to reply.
Robert
>have both in series, that would drop the voltage a lot.
Thats what I thought! But the instructions that come with the coil say to leave the orginal wiring and resistor wiring in place. Doesn't make sense. I've contacted Mallory and am waiting for one of their tech people to reply.
Robert
Post Fiend
Joined: Apr 2002
Posts: 7,157
Likes: 1
From: Central Kali
Coil voltage?
Let us know what thay have to say. I would like to know if the new coil draws more current then the stock one. I don't worry about current thru the points since I installed my MSD. The points are just a trigger, and the coil is a step up transformer. Leaving the stock ballast in just does not compute to me. 
