1983 KZ 750 LTD Shaft Drive Advice

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:14 #751895

TheFish Topic Author Offline User Posts: 16 Thank you received: 0	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.
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:20 #751897

Nessism
Offline
Sustaining Member
Posts: 7284
Thank you received: 2675

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.

Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0
www.kzrider.com/forum/forum-index/faq-wi...owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread

Please Log in or Create an account to join the conversation.

Last edit: by Nessism.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:23 #751898

TheFish Topic Author Offline User Posts: 16 Thank you received: 0	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.
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:23 #751899

TexasKZ Offline Platinum Member Posts: 7216 Thank you received: 2067	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
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:24 #751901

martin_csr
Offline
User
Posts: 7983
Thank you received: 1621

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.

1981 KZ650 Competition Sports and Road

The following user(s) said Thank You: TheFish

Please Log in or Create an account to join the conversation.

Last edit: by martin_csr.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:25 #751902

TexasKZ Offline Platinum Member Posts: 7216 Thank you received: 2067	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
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:27 #751903

TheFish Topic Author Offline User Posts: 16 Thank you received: 0	You think my coils are good...? I'm not following
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:30 #751904

TexasKZ Offline Platinum Member Posts: 7216 Thank you received: 2067	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
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:46 #751905

TheFish Topic Author Offline User Posts: 16 Thank you received: 0	Secondary wiring and power to the coils? Could you please explain these?
	Please Log in or Create an account to join the conversation.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 13:51 #751907

Nessism Offline Sustaining Member Posts: 7284 Thank you received: 2675	Nevermind... Ed Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0 www.kzrider.com/forum/forum-index/faq-wi...owner-things-to-know 1981 KZ750E2 www.kzrider.com/forum/11-projects/604901...z750e-project-thread The following user(s) said Thank You: TheFish
	Please Log in or Create an account to join the conversation. Last edit: by Nessism.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 18:02 #751914

TheFish Topic Author Offline User Posts: 16 Thank you received: 0	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
	Please Log in or Create an account to join the conversation. Last edit: by TheFish.

1983 KZ 750 LTD Shaft Drive Advice 10 Jan 2017 18:05 #751915

TheFish Topic Author Offline User Posts: 16 Thank you received: 0	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?
	Please Log in or Create an account to join the conversation.

KZRider, KZ, Z1 & Z Motorcycle Enthusiast's Forum

TOPIC: