Dyna 0.7 ohm blue coil primary connections

[Guest]

When I pulled the cylinder head off of my bike for a valve job I removed the coils and set them aside. Now that I'm putting everything back together, I've run into a bit of an issue with the primary connections to the coils. On the Dyna blue coils there are no polarity symbols on the primary connection (low voltage) terminals. I can't tell which side was the + and which one was the - . Is the terminal on the secondary terminal (plug wires) side the + or is it the other way around? Someone said that they will work either way, but something about the spark will arc from the ground of the spark plug to the electrode if you have the polarity reversed . I know somebody out there on this board has the answer. Thanks in advance!

[Steve]

I can't tell which side was the + and which one was the -. ... Someone said that they will work either way, but something about the spark will arc from the ground of the spark plug to the electrode if you have the polarity reversed .

I don't think it will really matter. As a matter of fact, because you have two plug wires on one coil, one of them will arc from tip to ground the other will arc from ground to tip. If you switch polarity, you will only change what each plug does, but you already have arcs going both ways.


By the way, zero point 7 ohm coils?
If you manage to get up to 14 volts, you will have 20 amps going through each coil. That means 40 amps for both of them.
I don't think your stator is going to keep up with that.

.

[Homie]

zero point 7 ohm coils? If you manage to get up to 14 volts, you will have 20 amps going through each coil. That means 40 amps for both of them. I don't think your stator is going to keep up with that.

Steve, you scared me.

So I had to endure 46 minutes of monotonous "please wait for the next available representative" holding with Dynatek to get the "scoop" direct from the source. After what seemed like forever I finally got to talk to "Ray" one of their tech guys. According to Ray, thru some kind of electronic wizardry of the 4000 Super Pro's electronic control unit (ECU), the maximum draw of each 0.7 ohm blue coil is 5.2 amps. Whew! That's a relief! Further more, he said that he also had an '83 GS1100E (coincidence or BS??) and has been running the 4000 Super Pro on it for the past six years with no issues. Ahhh! More relief! And then to totally make my long wait on hold worthwhile, he told me that the 0.7 ohm blue coils are not polarity specific and you can hook them up either way. Woohoo!

[SqDancerLynn1]

The 4000 super i would bet is a CDI ignition which is why the .7 ohm coils. With the .7 ohm coils with the stock system they will overheat !!

[Homie]

The 4000 super i would bet is a CDI ignition which is why the .7 ohm coils. With the .7 ohm coils with the stock system they will overheat !!

According to Ray at Dynatek, the 4000 Super Pro will work correctly WITH ONLY the 0.7 ohm coils. Apparently I was worried for nothing. Now I got to get back to the garage and finish putting the beast back together.