KZ900 Question

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04 Jun 2015 18:20 #675281 by BIGKEVIN
KZ900 Question was created by BIGKEVIN
My battery dies this week, the fluids were low in it. I got another battery and charged it overnight. I decided to check the voltage to the coils and found that I have 12.19 volts with the bike running and it goes up to 12.6 volts at 3,000 rpm at the battery. I am seeing 11.60 volts at the coil with the bike idling and 12.08 volts at the coil at 3,000 rpm. Is this an acceptable voltage ? I also check the compression and I have 125 psi on #1, 135 psi on #2, 130 psi on #3, and 135 psi on #4. The compression was checked with the throttle open and the engine cold. My question is if the battery/coil voltage is acceptable.

1976 KZ900
2006 ZX6R

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  • SWest
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  • 10 22 2014
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04 Jun 2015 18:34 #675284 by SWest

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  • KZQ
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  • Walking Behind the Corn May Not Be All That!
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04 Jun 2015 19:49 - 04 Jun 2015 19:51 #675290 by KZQ
Replied by KZQ on topic KZ900 Question
Hi BK,
Those voltages sound good. A half volt drop through the harness to the coils actually sound pretty good. A lot of these bikes see a lot more voltage drop as the switches and connectors get dirty and corroded.
Bill

www.KZ1300.com
Riders:
1968 BSA 441 Shooting Star, 1970 BSA 650 Lightning, 1974 W3, 1976 KZ900, 1979 KZ750 Twin, 1979 KZ750 Twin Trike, 1981 KZ1300, 1982 KZ1100 Spectre, 2000 Valkyrie, 2009 Yamaha Roadliner S. 1983 GL 1100
Projects:
1985 ZN1300
Last edit: 04 Jun 2015 19:51 by KZQ.

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05 Jun 2015 03:20 #675331 by BIGKEVIN
Replied by BIGKEVIN on topic KZ900 Question
Sorry about that. The votlage at the battery is 12.19 volts.

1976 KZ900
2006 ZX6R

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  • SWest
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  • Sustaining Member
  • 10 22 2014
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05 Jun 2015 06:14 #675339 by SWest

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