1981 GPZ1100 Ignition won't turn.

  • clagrow68
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1981 GPZ1100 Ignition won't turn.

04 Aug 2025 18:36 - 04 Aug 2025 18:37
#915531
The key will not turn.  The steering lock is disengaged (not locked) but the key won't turn.  I have done all of the usual stuff, wiggled, lubed with both graphite (first) then brake cleaner and then wet lube.  Won't tun at all.  I ordered a new switch that all of the sites claim is the one...but it is not.  This one is different.  I found the Kawasaki OEM number but it isn't available anywhere anymore and even if it was, it's $350-500!
This is the one I need.  Any ideas? Or would anyone happen to have one with key(s)? 
1978 Kawasaki KZ1000
1981 Kawasaki GPZ1100
Last edit: 04 Aug 2025 18:37 by clagrow68.

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  • TexasKZ
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Re: 1981 GPZ1100 Ignition won't turn.

04 Aug 2025 18:40
#915532
If the problem is in the lock, a locksmith should be able to fix it.
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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  • ayeckley
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Re: 1981 GPZ1100 Ignition won't turn.

04 Aug 2025 18:43 - 04 Aug 2025 18:47
#915533
Are you able to find the four digit key code (usually starting with “Z” on the GPzs if I recall correctly). It will be stamped on the ignition switch assy in a place that wouldn’t be visible when it is installed on the bike. My guess is that you don’t have the correct key is all. Once you have the code you can order a replacement key. There are a few vendors out there (including RSTNICK on this forum) who can make a replacement based on just that info. 
1976 KZ900A4
1976 KZ900A4
1978 KZ1000A2
1983 ZX750 A1 aka GPz 750
1983 ZX750 A1
1973 CL350K4
1984 ZX1100 A2 aka GPz1100
1969 CT90
2006 Burgman 400
Last edit: 04 Aug 2025 18:47 by ayeckley.

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  • Nerdy
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Re: 1981 GPZ1100 Ignition won't turn.

04 Aug 2025 18:54
#915537
I feel bad for noticing this, but I did 

 
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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  • Wookie58
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The following user(s) said Thank You: clagrow68

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Re: 1981 GPZ1100 Ignition won't turn.

05 Aug 2025 13:37 - 05 Aug 2025 13:38
#915578
NERDY....Me too...lol.  I should have included that this key DID work, as I was able to fire it up when I purchased it.  The person I bought it from told me that the key was "finnicky".  But was able to start it up a couple of times but now it won't turn at all.
1978 Kawasaki KZ1000
1981 Kawasaki GPZ1100
Last edit: 05 Aug 2025 13:38 by clagrow68.

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Re: 1981 GPZ1100 Ignition won't turn.

05 Aug 2025 13:42
#915579
Wookie....THANKS!  Will be doing that tonight or tomorrow.
1978 Kawasaki KZ1000
1981 Kawasaki GPZ1100

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  • Nerdy
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Re: 1981 GPZ1100 Ignition won't turn.

05 Aug 2025 13:53
#915581
NERDY....Me too...lol.  I should have included that this key DID work, as I was able to fire it up when I purchased it.  The person I bought it from told me that the key was "finnicky".  But was able to start it up a couple of times but now it won't turn at all.
 

I hoped you would realize I wasn't being a jerk, and you did - thank you.   

A year or two ago I bought a set of gauges for an old Yamaha, including the lock and ignition key. It arrived and I fiddled with it for a while: the key would turn but it wasn't happy about it. I pulled the key out and it said Honda. 
1979 KZ400 Gifted to a couple of nephews
1967 Yamaha YCS1 Bonanza
1980 KZ440B
1981 Yamaha XT250H
1981 KZ440 LTD project bike
1981 GPz550
2013 Yamaha FZ6R

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  • clagrow68
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Re: 1981 GPZ1100 Ignition won't turn.

06 Aug 2025 16:36 - 07 Aug 2025 06:10
#915636
Wookie, In your tutorial  You mentioned looking up in there and pushing the wafer toward the middle to slide the actual barrel out I've got it completely torn down but do not see any wafer to pull that out.

This one releases the barrel from the housing (key needs to be in when you pull the barrel and the chrome cap also needs to be removed from the barrel (don't lose the flap and spring)

1978 Kawasaki KZ1000
1981 Kawasaki GPZ1100
Last edit: 07 Aug 2025 06:10 by Wookie58.

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  • Wookie58
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Re: 1981 GPZ1100 Ignition won't turn.

07 Aug 2025 06:09
#915651
Looks like I edited your post instead of "quoting" 

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  • H1Vindicator
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Re: 1981 GPZ1100 Ignition won't turn.

07 Aug 2025 06:48 - 07 Aug 2025 06:49
#915653
possible solutions. these are similar in appearance. the terminal pins may need to be replaced with correct size. 
KZ1000-J2 Ignition lock source. has link to another site w photos. kzrider.com/forum/forum-index/4-electric...ignition-lock-source
KZ1000K LTD. VN750 ignition switch.  www.kzrider.com/forum/4-electrical/61386...n-1981-82-kz1000-ltd
Last edit: 07 Aug 2025 06:49 by H1Vindicator.

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  • Wookie58
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Re: 1981 GPZ1100 Ignition won't turn.

07 Aug 2025 07:02
#915654
possible solutions. these are similar in appearance. the terminal pins may need to be replaced with correct size. 
KZ1000-J2 Ignition lock source. has link to another site w photos. kzrider.com/forum/forum-index/4-electric...ignition-lock-source
KZ1000K LTD. VN750 ignition switch.  www.kzrider.com/forum/4-electrical/61386...n-1981-82-kz1000-ltd
Simply cleaning out the old hardened grease and road dirt is all it usually requires (about an hours work and no cost)

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