What coil? 2 ohm? 3 ohm 5 ohm?

[Canadian Eh]

My bike is a 1982 GS 650glz.
I see options for new coils at Z1 Enterprises but I don't know what ohm coils to replace the originals with. I was going to install a new coils and new plug wires and caps. Obviously it matters but how do I know which ohmage coils to use? I've looked around the forums and I don't see any heading on this topic but I'm sure there is one somewhere I just can't find it

[Steve]

3Ω green are the preferred coils.

.

[Nessism]

Information like the coil resistance can be found inside the factory service manual for you bike (free download here...)

Know before purchase that coils get falsely blamed for a lot of different ignition problems. The factory coils are very robust and typically last the life of the bike. Not saying your coils are good, just sharing a little tidbit before you throw down your money.

[Canadian Eh]

Is it easy to cut the wires off of the original coils and patch new wires onto the old or can you do that?

[Nessism]

The wires fits down into a tunnel so to speak in the coil with a spike down at the bottom. You can try shooting or injecting some WD-40 down alongside the wire in the coil in a couple of places and then pull them out. Worst case, dig the wire out with a pick (but watch that spike on the bottom.) The OEM wires are 7mm copper core, using resistor plug caps.

[Canadian Eh]

Checked out your pics Steve - nice collection!
I'd post pics but it just errors every time.

[Canadian Eh]

The wires fits down into a tunnel so to speak in the coil with a spike down at the bottom. You can try shooting or injecting some WD-40 down alongside the wire in the coil in a couple of places and then pull them out. Worst case, dig the wire out with a pick (but watch that spike on the bottom.) The OEM wires are 7mm copper core, using resistor plug caps.

Sweet! Ordering new wires tonight then. THANKS!

[Canadian Eh]

The wires fits down into a tunnel so to speak in the coil with a spike down at the bottom. You can try shooting or injecting some WD-40 down alongside the wire in the coil in a couple of places and then pull them out. Worst case, dig the wire out with a pick (but watch that spike on the bottom.) The OEM wires are 7mm copper core, using resistor plug caps.

So just to be sure then, I should be able to (carefully) pull the old original wires out of the original coils and push the new wires in after inspecting that the "posts" are still in good shape inside?

[Nessism]

So just to be sure then, I should be able to (carefully) pull the old original wires out of the original coils and push the new wires in after inspecting that the "posts" are still in good shape inside?

This is correct.

You might want to recycle the outer wire covering and install that down onto your new ignition wires. Again, some WD-40 allows it to slide on and off. And be sure to either replace the caps or at least measure the resistance in your existing caps. Z1 Enterprise sells wires and NGK caps for cheap. The caps are 5k ohms resistance and come in a variety of configurations.

Good luck.

[Nessism]

Some more info here...https://www.thegsresources.com/_foru...70#post1103270

[Canadian Eh]

I've ordered Z1's 7mm copper core wires with new caps. I have about 6 orders/purchases coming in the mail from eBay, Z1, Bike Bandit, Amazon and Wish to finish my '82 650L build. Shipping is so dang slow right now and our riding season will be all but gone by the time I'm finished. Thanks for the advice - the old wires are a bit ugly. Now back to watching Hondo lol

[metalfab]

Remember if you change the resistance of the coils the amperage draw changes. Amps drawn equals the running voltage, about 14 volts, divided by the resistance in ohms. then if you have two coils double the amps you calculated. I (amps) = V (volts) divided by R (resistance in ohms)

[Canadian Eh]

Information like the coil resistance can be found inside the factory service manual for you bike (free download here...)

Know before purchase that coils get falsely blamed for a lot of different ignition problems. The factory coils are very robust and typically last the life of the bike. Not saying your coils are good, just sharing a little tidbit before you throw down your money.

Thanks, I just glued new wires into the old coils!

[Gorminrider]

Um-a note of caution-be careful you don't stress the Ignitor black box...they are designed for a particular resistance through the primary winding of the coil. Stick to the original spec to be safe. (read metalfabs note)

[Canadian Eh]

Um-a note of caution-be careful you don't stress the Ignitor black box...they are designed for a particular resistance through the primary winding of the coil. Stick to the original spec to be safe. (read metalfabs note)

Thanks, I reused the existing coils but inserted new wires.
Cheers