74 z1 fork stiction

  • canadien
  • canadien's Avatar Topic Author
  • Offline
  • User
  • Posts: 22
  • Thanks: 0

74 z1 fork stiction

03 Sep 2015 17:14
#688519
I recently got my 74 Z1 going. New fork seaks 10 w fork oil progressive springs. The front forks seem to stick a lot the bike doesn't ride well. Any ideas?

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 23235
  • Thanks: 2832

Re: 74 z1 fork stiction

03 Sep 2015 17:27
#688522
Did you check if the tubes are bent? They can look straight but be slightly bent. Jack up the front end, loosen the clamp bolts and twist the tubes and watch for binding or loose spots. When you had them off, you should have rolled them on a flat surface. The glass of a sliding door or mirror would work. Mine were slightly bent for years. I just twisted them so they wouldn't stick. I bought new ones just two years ago from Z1E.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

  • canadien
  • canadien's Avatar Topic Author
  • Offline
  • User
  • Posts: 22
  • Thanks: 0

Re: 74 z1 fork stiction

03 Sep 2015 17:46
#688526
I should have mentioned I installed new fork tubes from z1 enterprises

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 23235
  • Thanks: 2832

Re: 74 z1 fork stiction

03 Sep 2015 18:05
#688527
Mine were sticky at first. They loosened up with time.
Steve

Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

Attachments:

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

  • canadien
  • canadien's Avatar Topic Author
  • Offline
  • User
  • Posts: 22
  • Thanks: 0

Re: 74 z1 fork stiction

03 Sep 2015 18:15
#688529
When I was 17 I had a 73 Z1 now I fixed up a 74 Z1. I don't remember the ride being this bad. Are these early bikes known for stiff front forks?

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 23235
  • Thanks: 2832

Re: 74 z1 fork stiction

03 Sep 2015 18:34
#688532
No, there must be some other problem.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

  • Kawboy74
  • Kawboy74's Avatar
  • Offline
  • User
  • Posts: 319
  • Thanks: 52

Re: 74 z1 fork stiction

04 Sep 2015 16:55
#688680
Did you apply a bit of fork oil to the seals during assembly? The lip of the seal could be catching on the tube. My new tubes were hard on the dust boots for a season and needed silicone spray occasionally to stop the noise. All good now though.
1974 Z1A As original as I could get it
'88 ZX750R braided lines, mostly original
KZ1000 project on the bench
Burlington,Ontario,Canada

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

  • canadien
  • canadien's Avatar Topic Author
  • Offline
  • User
  • Posts: 22
  • Thanks: 0

Re: 74 z1 fork stiction

04 Sep 2015 17:05
#688681
I will try some silicone spray. Thanks

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

  • Kidkawie
  • Kidkawie's Avatar
  • Offline
  • User
  • I bleed premix
  • Posts: 1913
  • Thanks: 243

Re: 74 z1 fork stiction

09 Sep 2015 01:00
#689259
New tubes, new seals your going to have some sticktion until they break in.
1975 Z1 900
1994 KX250 Supermoto
2004 KX125

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 23235
  • Thanks: 2832

Re: 74 z1 fork stiction

09 Sep 2015 02:54
#689267
You may have over filled them.
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

  • Tyrell Corp
  • Tyrell Corp's Avatar
  • Offline
  • User
  • "You were made as well as we could make you"
  • Posts: 1650
  • Thanks: 261

Re: 74 z1 fork stiction

09 Sep 2015 04:22
#689284
Try removing the stiction by loosening everything and retighten in order, starting from the wheel spindle to the top triple tree clamp whilst bouncing up and down on the forks. The idea is to clamp everything together in a relaxed position and remove and uneven clamping stresses.

www.randakksblog.com/removing-stiction-from-gl1000-front-forks/
1980 Gpz550 D1, 1981 GPz550 D1. 1982 GPz750R1. 1983 z1000R R2. all four aces

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 23235
  • Thanks: 2832

Re: 74 z1 fork stiction

09 Sep 2015 04:40
#689291
I redid my seals not long ago (one kept leaking tho I have new fork tubes). I used oil as I put it back together. Once on the bike, I added oil to the level stated. HARD as a rock. I drained some and my travel came back. Could be something just as stupid. :lol:
Steve
Z1b1000 1975 Z1b
kzrider.com/forum/11-projects/598262-kz-...-will-it-live#672882
kzrider.com/forum/2-engine/597654-poser?start=240#704229

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

Powered by Kunena Forum