stick coils?

vinny

vinny

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Hi guys and gals,
has anyone tried fitting stick coils to a ZL ?
Apparently lots of ZRX guys are doing it. They reckon it sharpens things up a little, loses about a Pound in weight and creates a load of space under the gas tank.
Any comments? :detective:
 
Parts needed:

ZX14, ZG1400, ZX10 Stick coils and coil harness. Others will fit but I have yet to use them
(4) 1/4" male spade crimp on connectors.
Good tape. Scotch #33 or similiar
Soldering iron and solder




This is basically how it's done. Wire them in series like you would for 2 12v batteries in a diesel truck.
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The stock zx14 harness has almost all the colors there so try to use them that way. When prepping the zx connectors, cut them leaving the longest tails possible on the coil connectors!!! It's easier to see in the first pic below the #2-#3 coil plug conns(the 2 that are wired closer together)You have a red lead and a BLK/GRN striped colored lead loose. Then the negative(black or green) from the first connector gets soldered to the positive on the second connector. I use a black magic marker to color in the #1-#4 negative lead solid, some harnesses will leave you with a WHT/BLU wire for that. I usually only have to solder 2 or 3 connections. 3 if the one red lead isn't long enough. There will be plenty of red wire leftover to add to the short one.

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Her's for the #1-#4 coils
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1/4" male spade connectors installed. Available at Radioshack etc
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This shows the stock ZX grommet down in the hole just a tad. These will seal this way just fine I believe.
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Roughly where the rubber grommet gets slid down the stick coil to
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With the stock zl grommet trimmed and put over the zx grommet. I'll bet someone could find a better solution.
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Apparently i am behind again, what would a stick coil be?
 
I assume he's talking about the "coil on plug" ignition found on todays cars and some motorcyles such as the z1000.

Without getting out the wiring diagram I assume this would work well on our bikes, providing the z1000 coils fit! Pair the coils together as the secondaries are now to retain proper firing order, my only concern is the CDI taking on current from 2 extra coils. Any input?
 
I have had the coils out on my Z1k and they look like they might fit
I didn't try them . and I with Mark will they work with the old cdi system on the ZL.
 
Yes - I was referring to the modern single coil systems that are used on lots of modern cars and bikes,
Mark, from what I gather, the mod replaces the original 2 coils with 4 coils of lower impedance!
So as long as the stick coils that you use have the correct impedance, there should not be a problem with burn out of the CDI.

Here is a link from ZRXOA about this mod.


http://www.zrxoa.org/forums/showthr...e07410f&threadid=162392&highlight=stick+coils

and hers another with some explanation regarding impedance etc.

http://www.zrxoa.org/forums/showthr...e07410f&threadid=156452&highlight=stick+coils

Hope it helps!
 
Ohhhh...I like that idea. wonder whats cheaper dynas or coil overs?
 
Good reading. Who's gonna try this one out?

Further down the page there is a link of a guy doing a fuel injection conversion. More good reading there also.
 
gosupes said:
Good reading. Who's gonna try this one out?

Further down the page there is a link of a guy doing a fuel injection conversion. More good reading there also.
Click to expand...
As soon as K-Ray has someone go out in the garage and see if they fit I'll do it!
 
Ok Mark I have to help a friend of mine with his '03 Z1k as soon as his pipes come in .we are putting new plugs and hook-up a PCIII so I will be easy to try then. My baby is setting right by the tool box
any way I'll let you know next week ok.
 
Will be interested to see if the Z1000 stick coils will work out. :detective:
Previously, the ZX10R Ninja sticks are the one fitted to the ZRX as a mod.
 
Thanks for the warning Mark.

I have looked in the specifications sections of the manuals and found -

ZX900 and ZX1000 A models 1.8 to 2.8 ohms
ZX1000 B model 2.6 to 3.2 ohms.

and ZRX1100 2.3 to 3.5 Ohms.

I'm sure someone with some electrical background will be along sometime to make sense of these figures and say what can and can't be done. :D
 
zlMark said:
vinny said:
Thanks for the warning Mark.

I have looked in the specifications sections of the manuals and found -

ZX900 and ZX1000 A models 1.8 to 2.8 ohms
ZX1000 B model 2.6 to 3.2 ohms.

and ZRX1100 2.3 to 3.5 Ohms.

I'm sure someone with some electrical background will be along sometime to make sense of these figures and say what can and can't be done. :D
Click to expand...
At 13.5 volts you're looking at 7.7a to 11.7a with 2 zrx coils versus 4.8a to 7.5a with 1 zl coil, it's early correct me if I'm wrong :D Now that there is a substantial increase in current.
Click to expand...

Are we talking primary (12V side) or secondary (high volts side)

If it's primary then that's a big increase for the electronics to handle. If it's secondary then it's negligible.

KK
 
I've now read the complete artical on the ZRX site,
Each ZL900 coil has a specified DC resistance of between 1.8 to 2.8 ohms. The ZL1000 coil has a specified DC resistance of between 2.6 to 3.2 ohms.


The ZX10R Mitsu stick coils are 1.3 ohms.

Wired in series in wasted spark mode, that makes 2.6 ohms

The ZL ignitor box won't know the difference whether it's running standard coils or ZX10R stick coils.

Correct me if i am wrong??

cheers

Mark
 
Markzl900 said:
Each ZL900 coil has a specified DC resistance of between 1.8 to 2.8 ohms. The ZL1000 coil has a specified DC resistance of between 2.6 to 3.2 ohms.
The ZX10R Mitsu stick coils are 1.3 ohms.
Mark
Click to expand...

with this info post I no long need to see if the Z1k coil will fit in the ZL right ?
 
zlMark said:
vinny said:
Thanks for the warning Mark.

I have looked in the specifications sections of the manuals and found -

ZX900 and ZX1000 A models 1.8 to 2.8 ohms
ZX1000 B model 2.6 to 3.2 ohms.

and ZRX1100 2.3 to 3.5 Ohms.

I'm sure someone with some electrical background will be along sometime to make sense of these figures and say what can and can't be done. :D
Click to expand...
At 13.5 volts you're looking at 7.7a to 11.7a with 2 zrx coils versus 4.8a to 7.5a with 1 zl coil, it's early correct me if I'm wrong :D Now that there is a substantial increase in current.
Click to expand...

As resistance increases, current drops. V/R=I. I read the article the same as Markzl900, with two coils in series, it should come out okay.
 
I think it should work out OK - as long as the resisance used is in the order of 2.6 Ohms - because that will be within the specified limits for both the ZL9 and the 1K.
:D
Any lower resistance would enable more current flow and damage the ECU. :pale:
 
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