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Timing advance 30 Apr 2016 15:39 #723828

  • Variomatic
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Whilst dining around the KZ today I noticed that it has an "IC igniter". Did some digging and found that this is apparently a device to advance the timing as needed instead of a mechanical advance mechanism. As I found in this post:

www.kzrider.com/forum/13-bike-related/60...-clutch-ideas#723366

So (probably a stupid question), does the 1980 KZ1000LTD not have a mechanical advance? (I can't actually go check myself till Monday, does anyone happen to know?)
Currently participating in the restoration of a 1980 Kawasaki KZ1000 LTD

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Timing advance 30 Apr 2016 16:30 #723835

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Variomatic wrote: Whilst dining around the KZ today I noticed that it has an "IC igniter". Did some digging and found that this is apparently a device to advance the timing as needed instead of a mechanical advance mechanism. As I found in this post:

www.kzrider.com/forum/13-bike-related/60...-clutch-ideas#723366

So (probably a stupid question), does the 1980 KZ1000LTD not have a mechanical advance? (I can't actually go check myself till Monday, does anyone happen to know?)


Has the usual mechanical timing advancer with springs and centrifical force operated weight arms.

The IC Igniter works with the pickup coils to repeatedly ground and unground the ignition coils, and depends on the mechanical advancer to tell it when to ground and unground the ignition coils.

For example, when a Dyna-S ignition is installed to replace the stock igniter system ignition, the IC Igniter unit is discarded, and the Dyna-S then relies on the same mechanical advancer.

Good Fortune! :)
1973 Z1
KZ900 LTD

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Timing advance 30 Apr 2016 17:44 #723841

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Here's a diagram. Ed

Attachment 00003a-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19.jpg not found

1977 KZ650-C1 Original Owner - Stock (with additional invisible FIAMM horn)
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Timing advance 01 May 2016 06:03 #723893

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Thanks, Ed! :)




Good Fortune! :)
1973 Z1
KZ900 LTD
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Timing advance 01 May 2016 06:19 #723897

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Patton wrote: Thanks, Ed! :)




Good Fortune! :)


Ahh ok, that one threw me for a second. I've been spending the last few nights learning as much as possible about carbs and the ignition system, this was the clearest explanation I could find, thanks for the help :)
Currently participating in the restoration of a 1980 Kawasaki KZ1000 LTD

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Timing advance 01 May 2016 06:58 #723907

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During most of the crankshaft's rotation, the "pointy" part of the rotor is away from a pickup. This is when the ignition coil "charges" by having its primary winding grounded through the IC Igniter.

When the "pointy" part of the rotor points at a pickup (actually moves across the pickup), the ignition coil's primary winding becomes momentarily un-grounded (same as what happens when old fashion points open), which un-grounding is the event that causes the ignition coil to "fire" by discharging high tension voltage through the secondary winding.





Good Fortune! :)
1973 Z1
KZ900 LTD
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Timing advance 01 May 2016 07:15 #723909

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Patton wrote: During most of the crankshaft's rotation, the "pointy" part of the rotor is away from a pickup. This is when the ignition coil "charges" by having its primary winding grounded through the IC Igniter.

When the "pointy" part of the rotor points at a pickup (actually moves across the pickup), the ignition coil's primary winding becomes momentarily un-grounded (same as what happens when old fashion points open), which un-grounding is the event that causes the ignition coil to "fire" by discharging high tension voltage through the secondary winding.





Good Fortune! :)


I understand how points work, this is basics. When I say learning about the ignition system, I don't mean how they work, I mean learning about this bikes specific ignition system. The way points and mechanical advance works is something I learnt about years ago.
Currently participating in the restoration of a 1980 Kawasaki KZ1000 LTD

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Timing advance 01 May 2016 08:58 #723919

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Variomatic wrote: Whilst dining around the KZ today I noticed that it has an "IC igniter". Did some digging and found that this is apparently a device to advance the timing as needed instead of a mechanical advance mechanism. . . .

Variomatic wrote: I understand how points work, this is basics. When I say learning about the ignition system, I don't mean how they work, I mean learning about this bikes specific ignition system. The way points and mechanical advance works is something I learnt about years ago.


"Learning about this bikes specific ignition system 101" -- the IC Igniter that's part of the bike's stock ignition system does NOT advance the timing.

Other than how it works, what else would like to be learned about the bike's specific ignition system?

Good Fortune! :)
1973 Z1
KZ900 LTD

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Timing advance 01 May 2016 09:04 #723921

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Patton wrote:

Variomatic wrote: Whilst dining around the KZ today I noticed that it has an "IC igniter". Did some digging and found that this is apparently a device to advance the timing as needed instead of a mechanical advance mechanism. . . .

Variomatic wrote: I understand how points work, this is basics. When I say learning about the ignition system, I don't mean how they work, I mean learning about this bikes specific ignition system. The way points and mechanical advance works is something I learnt about years ago.


"Learning about this bikes specific ignition system 101" -- the IC Igniter that's part of the bike's stock ignition system does NOT advance the timing.

Other than how it works, what else would like to be learned about the bike's specific ignition system?

Good Fortune! :)


I've been looking for information such as resistances across the coil primary and secondary, points gap, possibility of changing to a Dyna ignition ect ect, just to check little things are in order and to see what I can do with it, thankfully I've managed to find most of what I needed.
Currently participating in the restoration of a 1980 Kawasaki KZ1000 LTD

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