Dyna Coil Installation KZ1000 Ltd

Hi, I am just installing green 3ohm Dyna coils to my KZ1000 and I am not sure which plug leads attach to each coil. Is it 2 & 4 that attach to the left coil and 1 & 3 that attach to the right coil (facing forward on the bike). Also does it matter which whether these leads connect to the front or rear towers on the coils.

Many Thanks
Tommotbird

1/4 attach to one coil, 2/3 to the other and no, doesn't matter which tower you connect to.

As for left/right coil you can't really be sure on an old bike that might have been modified along the way - what matters is how the coils are connected at the timing plate.

Remove your ignition cover and look at the timing plate - the left set of points (or pickup if you have electronic ignition) trigger the 1/4 coil, the right set of points/pickup trigger the 2/3 coil - one will have a black wire, the other a green.

Connect the black and the green wire to the coils so the wire from the left set of points/pickup connects to the coil that has the 1/4 plug wires and the wire from the right set of points/pickup connects to the coil that has the 2/3 plug wires.

Thanks onkeIB
That explains why two longer NGK plug caps were attached to one old coil & two short ones to the other.
Tommotbird

What year LTD? Is it with stock Kawasaki electronic ignition.

Hi Otakar
It is a 1982 K model and I believe it has stock ignition
Tommotbird

Than The 3 Ohm coils will not work. You require 2.2 Ohm Coils otherwise you will blow your ignition module. I almost made the same mistake on my Scratch built GPZ1100. Fortunately I caught it in time.

Ive been runnin the 3 ohm coils of a year now with no problems. Where did you get that info otakar? I dont want to cause myself any extra trouble but buying another set of coils is a little pricy.
Thanks
Tom

Kawasaki used 2.2 Ohm systems from the first electronic ignition systems threw about 1990 when they switched back to 3 ohm. You will eventually burn out your module or your coils. Your system will run very hot. If you check your Kawasaki manual it will tell you that the coils must test between 1.8 & 2.8 Ohms. If they test at the low side the spark will be weaker, If they test at the high side the spark will be stronger and the system will run hot. The only exception to this is the 1300 which did run a 3Ohm system.

thomas ed wrote:

Ive been runnin the 3 ohm coils of a year now with no problems....

Okay where also using Dyna-S ignition and by-passing or discarding the igniter.

The oem ignition, igniter and lower ohm coils work together. The Dyna-S ignition replaces the oem ignition and igniter, and works with the green Dyna 3ohm coils.

Good Luck!

Looks like Im gona be buyin the dyna s
Thanks
Tom

otakar wrote:

Than The 3 Ohm coils will not work. You require 2.2 Ohm Coils otherwise you will blow your ignition module. I almost made the same mistake on my Scratch built GPZ1100. Fortunately I caught it in time.

Why is this? I've used three-ohm coils for years with the stock ignition.

Obviously, 3-ohm coils will use less current than 2.2-ohm coils since they have higher resistance. This means the ignition will run cooler, not hotter. BTW, Every stock Kaw electronic ignition coil I've measured was from about 2.4 to 2.7 ohms, but they are old.

Are you saying the primary side's induced voltage (in the 400v to 600v range) will be higher in the 3-ohm coil and possibly damage the output Darlington? But the protection Zener should bleed off the excess until the spark can initiate. Then the primary side is only around 50v... well within the Darlington's safety limit.

I'm not necessarily disputing what you're saying, but just wondering the reasoning.

Hi Thanks for all your input.
I am now completey confused as to whether the green 3ohm coils will be Ok or not.
I looked on Ebay and have even seen 1.5ohm used red coils advertised as being suitable for KZ dragbike etc. Would you need a ballast resistor in the supply voltage to the coils.

What would be the effect of using a balance resistor with the green 3ohm coils. I am reading that it increase the batery voltage for starting the engine and then it decrease the voltage when the engine is running.

Advice on using the green ones please, Yes or no.

Regards
Tommotbird