Super Dupper Ignition Coils

[camerondownunder88]

Hi,

Been toying with the idea of running a Accel Super coil 140001 in my KE15 for a while. So last weekend I got off my bum and put the one I had in the shed in. Coil is designed for a points system with super low internal resistance so there is minimal "inductance resistance" in the coil Thus making a bigger charge BOOM more spark power. These coild can make up to 65,000V on a test stand simulating a V8 so should go good on a 4 banger right....

 

Well bolted it on hooked up my wires (noting it is a KE1X so no external resistor).

 

And start car.....

 

Struggles to idle can't rev past 1500 RPM pops splutter runs horrible well not at all really.

 

So on went stock 40-year-old coil again runs fine...

 

Now I do need a better coil at cruise of 100KM/H (4000RPM) car has a slight pop as the stock coil starts to "run-off" and it misses but due to high-speed can't feel or really hear the miss (I can hear it as with my straight through 2 inch exhaust it amps up the small pop once every 30-47 seconds a LOT..LOL) and yes I have timed the interval between misses and gets worse when coil gets hotter.

 

So at first I though ah that super accel coil I had was dead so in the bin it went.

 

Jumped on vil bay got one cheap working off a chev V8 I was told put it in the KE15 today SAME DEAL.....

 

Coil misses, car wont rev past 1500RPM splutter wont idle at all really.

 

What is going on?

 

This coil ok ok I hooked it up with out a resistor I know it needs one as the primary windings in the coil have little to no resistance.

 

But could this cause the miss fire and pop etc just by not running a resistor?

 

Later when pulling apart car again will play with a spare resistor I ave to see if it will work with a resistor but so annoyed hope I have not purchased a dude and had 2 shit coils.

 

Cheers

Cameron

[Trev]

For points applications, the supplied 0.85 ohm ballast resistor must be used in conjunction with the vehicle's original ballast resistor, if so equipped.

 

Did you do this?

[camerondownunder88]

Well no I didnt trev..LOL

 

But got a spare KE3X resistor measure at 2.3 ohms.

 

I measured the stock coil internal resistance at: 4.6 ohms (this is a KE1X 12v stock coil)

 

Accel coil measures at: 1.6 ohms internal resistance.

 

Now for testing added the KE3X resistor and it WORKED :)Car out of tune so can't get firm results yet but.

 

But in this link:

http://www.accel-ignition.com/pdf/140001.pdf

 

it says add a 1.35 ohm resistor on top of stock resistance.

 

Does anyone know resistance of a chev/ford V8 stock engine? I can then add the total needed resistance and have a target.

 

As I don't want to much resistance stopping coil making power yet I don't want to little causing the coil to fail and not spark etc.

 

Cheers

Cameron

[Trev]

I was going to post that PDF but thought you would of had it already.