Z1 topidler rebuild with Liska gear
- willemZ900
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Z1 topidler rebuild with Liska gear
02 Nov 2025 14:37
    
    Hi all, question, i am rebuilding an old z1 topidler with a new liska billet gear. Now my question is if somebody know if the Liska top idler has the oil  holes in the assy to oil the billet gear like the original old top idler. 
Willem
  
    
  
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Re: Z1 topidler rebuild with Liska gear
Yesterday 18:41
    
    It will work fine.   
  
      
      Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
    
  
  kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- Bobf
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Re: Z1 topidler rebuild with Liska gear
Yesterday 19:16
    
    Built a few over the years with Liska gears with no problem as the oil from the rotating chain provides plenty of lubrication.  
  
      
      EKKAWI
1976 KZ400D, 1977 KZ1000A1, 1976 KH400, 1979 XS400, 1980 KZ550A, 1980 KZ750E, 1983 GPZ550,1979 KZ1000B LTD, 1986 ZG1000 Concours,1982 XS650 Turbo,KZ1000C, KZ1000P,1978 KZ650C (×2),2003 BMW R1150RT
2014 BMW R1200RT (Current ride)
1971 Norton 750 Commando
1979 KZ1000A3A MKII (Present project)
    
  
  1976 KZ400D, 1977 KZ1000A1, 1976 KH400, 1979 XS400, 1980 KZ550A, 1980 KZ750E, 1983 GPZ550,1979 KZ1000B LTD, 1986 ZG1000 Concours,1982 XS650 Turbo,KZ1000C, KZ1000P,1978 KZ650C (×2),2003 BMW R1150RT
2014 BMW R1200RT (Current ride)
1971 Norton 750 Commando
1979 KZ1000A3A MKII (Present project)
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Re: Z1 topidler rebuild with Liska gear
Yesterday 07:41Please Log in or Create an account to join the conversation.
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Re: Z1 topidler rebuild with Liska gear
Yesterday 08:49
    
    Next time I'll replace these on my liskas. 
steve
Just in case you have a 73-80 KZ 4 cyl top engine teardown to do, it might be a good idea to replace the needle bearings in the idler gears. They are a Koyo B-78. Real cheap to buy at Amazon. Just pop them out and back in with a small press. May save you from buying the sprockets.
www.amazon.com/Koyo-B-78-Bearing-Complem...8%2Caps%2C212&sr=8-1
  
      steve
Just in case you have a 73-80 KZ 4 cyl top engine teardown to do, it might be a good idea to replace the needle bearings in the idler gears. They are a Koyo B-78. Real cheap to buy at Amazon. Just pop them out and back in with a small press. May save you from buying the sprockets.
www.amazon.com/Koyo-B-78-Bearing-Complem...8%2Caps%2C212&sr=8-1
      Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
    
  
  kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229
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- MFP-Joe
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Re: Z1 topidler rebuild with Liska gear
Yesterday 09:33
    
    Over the past 20 years, I have re-bushed dozens of these idler pulley gears for myself, friends and customers, and they work absolutely without problems.  
  
      
      Greetings, Joe
    
    
  
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