Gone through 3 Ignition Coils!

2094 Views 13 Replies 6 Participants Last post by diego50, Oct 13, 2014

diego50

Discussion Starter · Sep 29, 2014

First coil was an MSD Blaster 2, which I admittedly mistakenly put on 12V, bypassing the resistor wire. This lasted only a week.

Second coil, also an MSD Blaster 2, I used the resistor wire and this lasted over a year. When it went bad, I assumed it was due to the extreme heat here in Dubai and it lasted as long as it could.

Third coil was a Pertronix Flamethrower. As per the instructions, this coil was run on full 12V. Less than a month later, this coil decided to go south, too.

Both times I ran a coil on 12V, they didn't last long. The Blaster 2 coil was a mistake and I get that it shouldn't have been run on 12V. But the Flamethrower, I didn't expect that to go so quickly.

I measured 12.7 volts at the wire going to the + side of the coil (coil disconnected). Location of the coil is the stock mounting on the intake manifold, next to the distributor.

Car is a 65 Galaxie, FE 352, Pertronix (1) ignition module. Any ideas on what could cause this coil to go bad so quickly? Any suggestions on a coil brand I should try?

How about those solid state coils? Can I run those?

Save

1 - 1 of 14 Posts

PSIG

· #8 · Oct 5, 2014

diego50 said:
Third coil was a Pertronix Flamethrower. As per the instructions, this coil was run on full 12V. Less than a month later, this coil decided to go south, too.

The instructions are definitely confusing, but if using a PerTronix-I Ignitor module, you must run the resistor to the coil, and no resistor to the module. The coil does not determine the need for the resistor - the module does.

diego50 said:
Location of the coil is the stock mounting on the intake manifold, next to the distributor.

If the coil is laying on it's side, that can cause early failure, as the cooling oil in the coil can have an air bubble that exposes the top of the core windings. Install upright whenever possible. However, I don't think that is the big problem here.

diego50 said:
... Pertronix (1) ignition module.

That is the part that determines if a resistor or ballast is used or not. If you do not want to use a resistor or ballast to the coil, then you must get a P-II or P-III module.

danv said:
Double check what the instructions said with the Pertronix coil.
Pretty sure it should use a resistor for the coil, but 12v to the Pertronix module at the distributor.

Dan is again correct. I found where we went through and tried to explain this more than a year ago in this thread? What made you decide to change it?

David

See less See more

Save

1 - 1 of 14 Posts

This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.

Top Contributors this Month