1983 KZ 750 LTD Shaft Drive Advice

  • TheFish
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:14
#751895
Oops. The primary resistance is supposed to be in the 3ohms range and the secondary resistance is supposed to be in the 15,000 ohms range. I'm not seeing that listed on the description of the coils. Looks like a call to them is needed.

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  • Nessism
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:20 - 10 Jan 2017 13:45
#751897
The stock coils are very reliable. What makes you think they are bad? Typically they last the life of the bike. Refreshing them by replacing the leads with new 7mm copper core ignition wires along with new NGK caps can't hurt though.

Edit: the factory Kawasaki service manual specs 1.8-2.8 ohms primary resistance, and 10-16 k ohms secondary resistance for the coils. The caps are 5k resistance as well.


[IMG


[IMG
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Last edit: 10 Jan 2017 13:45 by Nessism.

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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:23
#751898
I tested the ohms reading. 2.8 ohms on the primary resistance and 11,000 ohms on the secondary resistance. There is no spark. At least not one I can see when I test it.

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  • TexasKZ
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:23
#751899
If you actually need new ones

www.z1enterprises.com/dyna-dual-output-3...oils-pair-dc1-1.html
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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  • martin_csr
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:24 - 10 Jan 2017 13:26
#751901
If your coils are bad, the grey Dyna 2.2 ohm coils are supposed to be the best match for the stock electronic ignition, but you can use the green 3.0 ohm which is what I'm using. You may have to adapt the coil brackets to fit them. usually a couple of L-brackets per side from the hardware store. I made brackets from angled aluminum bar from the home depot. My 81 650 has the same ignition system as most of the 750-4s.

..... prototype.
[img
1981 KZ650 Competition Sports and Road
Last edit: 10 Jan 2017 13:26 by martin_csr.
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  • TexasKZ
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:25
#751902
TheFish wrote: I tested the ohms reading. 2.8 ohms on the primary resistance and 11,000 ohms on the secondary resistance. There is no spark. At least not one I can see when I test it.

What Nessism said.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:27
#751903
You think my coils are good...? I'm not following

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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:30
#751904
I think so. 11k is a little low, but I think they should fire. I am betting that the problem is either faulty secondary wiring or no power to the coils.
1982 KZ1000 LTD parts donor
1981 KZ1000 LTD awaiting resurrection
2000 ZRX1100 not ridden enough

www.kzrider.com/11-projects/620336-anoth...uild-thread?start=24

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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:46
#751905
Secondary wiring and power to the coils?

Could you please explain these?

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  • Nessism
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 13:51 - 10 Jan 2017 15:22
#751907
Nevermind...
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Last edit: 10 Jan 2017 15:22 by Nessism.
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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 18:02 - 10 Jan 2017 18:03
#751914
Haha

Sorry man, I know I'm new to this sort of stuff. Not to sound trite, but could you explain it to me like I'm a five year old...? Simple descriptions would help me out a lot! Thanks
Last edit: 10 Jan 2017 18:03 by TheFish.

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Re: 1983 KZ 750 LTD Shaft Drive Advice

10 Jan 2017 18:05
#751915
Also, the pic you posted earlier wasn't loading before. But because my primary resistance is at 2.8 ohms, and my secondary resistance is at 11,000 ohms, it should be good to go and it is most likely the spark plug leads that are bad?

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