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kz750 / kz400 Coil bad? Replacement options?
- Oldercrow
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I saw a few videos on youtube showing how to test the ohm's on the coil. What is the best way to test the coils and deduce what's wrong?
Also, if I was going to replace the coils, would the Dyna 5 ohm coils Z1 sells be a good choice or should I go OEM?
www.z1enterprises.com/product/DYDC8-1-single
Thanks for any info!
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- SWest
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Steve
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- loudhvx
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Otherwise, there are 4-ohm options that look like the stock coils. I usually see them on ebay etc.
If you might go with electronic ignition in the future, then the Dyna 3 ohm may be a good choice in the interim. If you go with them, make sure the dwell is just a little under 180 degrees. That means the points are closed a tiny bit less than half of a crank rotation.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
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- Oldercrow
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Would those ebay 4ohm's be a good quick fix just to get running? Not doing a full restore at this point, just getting some bikes ready for new riders.
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- loudhvx
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It may be quick and cheap, but it may also be a permanent fix, for a few decades.Oldercrow wrote: Thanks for the reply!
Would those ebay 4ohm's be a good quick fix just to get running? Not doing a full restore at this point, just getting some bikes ready for new riders.
Make sure the listing says 4 ohms, or ask the seller. The 2.4 ohm coils look similar, but they will burn up the points.
They are the black ones that look like the stock coils (some of the stock coils were different color, though). The only issue is the mounting bolt spacing. If that's not listed, ask the seller. There are a few different spacings among Kz's, so you'll want to measure the old ones.
1981 KZ550 D1 gpz.
Kz550 valve train warning.
Other links.
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- Oldercrow
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- bountyhunter
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Won't hurt a thing.Oldercrow wrote: Can running a 5 ohm hurt anything?
1979 KZ-750 Twin
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- bountyhunter
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Oldercrow wrote: I have a 1979 kz750 and a 1976 kz400 and both are turning over, have gas, cleaned carbs but drive a bit weakly and then die. Seems like there could be a coil issue for both.
I saw a few videos on youtube showing how to test the ohm's on the coil. What is the best way to test the coils and deduce what's wrong?
Also, if I was going to replace the coils, would the Dyna 5 ohm coils Z1 sells be a good choice or should I go OEM?
www.z1enterprises.com/product/DYDC8-1-single
Thanks for any info!
Here is one that should work:
1979 KZ-750 Twin
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- Oldercrow
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- bountyhunter
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Replace. You don't have the equipment required to test a coil.Oldercrow wrote: I have a 1979 kz750 and a 1976 kz400 and both are turning over, have gas, cleaned carbs but drive a bit weakly and then die. Seems like there could be a coil issue for both.
I saw a few videos on youtube showing how to test the ohm's on the coil. What is the best way to test the coils and deduce what's wrong?
1979 KZ-750 Twin
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