AEM IGN-!A Coil location
 

I just recently bought 4 aem ign-1a coils for a turbo build and I am trying to figure out how to mount them. I would really like to mount them under the intake manifold but I am worried about the heat/vibration causing them to wear more excessively. i would really appreciate some input if anybody has any experience or knowledge on this. Thanks

If you don't have AC and PS, the natural place to put them is on the frame rail next to the engine. Gives relatively cool place and short plug wires.

Thanks, yeah I don't have ac or ps and the frame rail was going to be my second option. Thought it would look cool to "hide" them under the intake manifold but don't want to do it at the expensive of the coils.

Here is how mine turned out.

Aem Coils on an FC.
 

I made this mount last year,and put the setup on my FC on the driver's side Frame rail.
Mind you,I do not have any AC or Power steering.
I posted the parts involved...somewhere in the Haltech section.

That looks a lot like mine!

Mine

And mine

Thanks for all the pictures guys! I have an FC and C. Ludwig has steered me to mount them on the frame rail. I was thinking of doing something like misterstyx69 or JWteknix have done. Should have some time this weekend to get it fab'ed up and I'll post some pictures!

where are you guys getting your spark plug wires from?

I just bought about 6ft of bulk 8.5mm MSD spark plug wire and some spark plug ends and coil ends. Still need to cut and assemble them.

I got my MSD wires from Ludwig the straits were already crimped and I cut the wires to length and crimped the 90s my self

Here's what I came up with, still need to paint, and wire stuff up

I had a high failure rate with the AEM coils. Hopefully your have better luck

Weren't you using CDI?

I used the coils and CDI. I probably tried every combo of stuff you can think of at one point or another, lol.. But my application was a bit extreme then most would need.

What dwell were you charging them at?

That would be a tuning question lol...I, as you know ain't that guy! :D

I'm asking because we've sold a couple hundred of these and have only had two failures. One failure was traced back to a faulty ECU that would clamp the charge time open with the key on and engine off. The other failure was due to an ECU that was not properly configured. Very odd that you experienced a high failure rate.

It was only one failure, but that was enough for me. Keep in mind most people aren't trying to make over 800rwhp on gas either lol.

C. Ludwig, what size wire to you recommend running for power and ground to each of these coils? Will 12 gauge to each coil supply enough amperage to get the most out of the coils?
Thanks

You won't get 12 gauge into the connector.

On the harnesses we build we use mil-spec Tefzel wire. So you can lean on the wire a little harder than you would common "hook up" wire because it has a higher heat rating. The coil has a 19 amp driver but it's not going to draw that much current under sensible use. When it is drawing current, the duration is less than 6 ms per event, so it's hard to really work over a wire unless you're running at constantly high RPM (high duty cycle). We build the harnesses with a 14g main feed (pin E) from the battery that splices to individual 18g feeds to the coils. Same for the power ground (pin D). Pin A - C are signal level, so we use 20g for those.

If you're using parts store spec hook up wire, I'd do a 10-12g main spliced to 18g.

I was one of the Unfortunate ones!
.Warning: you cannot Sit and configure the ECU From STOCK TII to AEM coils and Have the power to the coils ON!.
You will FRY the L1 coil( in my case).
It was Baaaad..like white goooo oozing out of the coil.
Unplug your Coils before doing any alterations!.I highly suggest it!

Chris is correct, a 19 Amp IGBT is fitted though that rating is @125c.
The current rating @ 25c is 40 Amps (500 mJ clamp) with coil saturation holding 25 Amps of electrons. (280 mJ)
There is a 18 volt "clamping diode" also in the charging circuit, limit supply to 17 volts.
The first customer requested a high vibration, high RPM design for their Two Stroke racing engine.
Many "failed" coils have found problems in ECU/IGNITOR design with respect to Dwell Control.
These traces have helped manufactures find problems with their own hardware.
Lance

I just wanted to say thanks for this thread, it has given me some excellent ideas for coil mounts.