Side to side crankshaft play. Is this normal?

  • NoahTaylor98
  • NoahTaylor98's Avatar Topic Author
  • Offline
  • User
  • Posts: 9
  • Thanks: 0

Side to side crankshaft play. Is this normal?

25 Sep 2023 08:46
#889744
Previously I posted about having a crankshaft that felt tight in spots on my 78 kz400b. Well, that was a crank out of a parts engine. I put the original crank back in and now it feels smooth turning it however there is side to side play. I'll upload a video of the play. It's only side to side. No play everywhere else. Is this okay or is it an issue that needs addressing? Here is a video of the issue.

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

  • Wookie58
  • Wookie58's Avatar
  • Offline
  • Moderator
  • Posts: 4559
  • Thanks: 2707

Re: Side to side crankshaft play. Is this normal?

25 Sep 2023 11:11
#889749
The acceptable "end float" specification will be in the FSM
The following user(s) said Thank You: NoahTaylor98

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

  • TexasKZ
  • TexasKZ's Avatar
  • Offline
  • Platinum Member
  • Posts: 7739
  • Thanks: 2356

Re: Side to side crankshaft play. Is this normal?

25 Sep 2023 20:10
#889766
This manual only goes through 1977, but I bet the tolerance is the same for every year of the 400 twin.

See pages 118 and 119.

www.kzrider.com/modules/ServiceManuals/7...chablefullmanual.pdf
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
The following user(s) said Thank You: NoahTaylor98

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

Powered by Kunena Forum