Front Brake Clunk at any speed

  • Grnole
  • Grnole's Avatar Topic Author
  • Offline
  • User
  • Posts: 102
  • Thanks: 8

Front Brake Clunk at any speed

29 Oct 2014 06:40
#652076
Hey yall.

I recently noticed a "clunk" noise that only happens when I apply my front brake. Has anyone else ever experienced this in a KZ? It seems to happen at any speed / gear, and only when I apply the front brake.

I have a 1980 KZ1000.
1980 KZ1000 LTD -B4
1984 Yamaha FJ1100
1972 Honda CL350 (sold)

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

  • Grumpy Ole Artist
  • Grumpy Ole Artist's Avatar
  • Offline
  • User
  • Eschew Obfuscation!
  • Posts: 497
  • Thanks: 62

Re: Front Brake Clunk at any speed

29 Oct 2014 07:16
#652078
Doubtless, someone more knowlegible than myself will chime in, but I would get to the bottom of this ASAP...Caliper mounting bolts tight? Pads affixed tightly to calipers? At stop with front brakes applied, if you rock thr bike back & forth, does it "clunk" BOTH ways?
1978 KZ650 B2
Former rides...1976 CB360T, 1985 Shadow 700, 1985 GPZ750Turbo

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

  • Grnole
  • Grnole's Avatar Topic Author
  • Offline
  • User
  • Posts: 102
  • Thanks: 8

Re: Front Brake Clunk at any speed

29 Oct 2014 08:27
#652085
I will do the rock test to see which side its coming from. But i think it is pad/caliper related. Going to inspect further when i have some free time.
1980 KZ1000 LTD -B4
1984 Yamaha FJ1100
1972 Honda CL350 (sold)

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

  • PLUMMEN
  • PLUMMEN's Avatar
  • Offline
  • User
  • Posts: 8139
  • Thanks: 104

Re: Front Brake Clunk at any speed

29 Oct 2014 09:15
#652089
Id make some free time before riding it. ;)
Still recovering,some days are better than others.

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

  • pete greek1
  • pete greek1's Avatar
  • Offline
  • User
  • Posts: 1510
  • Thanks: 185

Re: Front Brake Clunk at any speed

29 Oct 2014 09:43
#652090
Maybe steering stem bearings
Pete
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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

  • Grnole
  • Grnole's Avatar Topic Author
  • Offline
  • User
  • Posts: 102
  • Thanks: 8

Re: Front Brake Clunk at any speed

29 Oct 2014 13:27
#652110
Think I found it.... Missing caliper bolt

Must have lost it on I-95
1980 KZ1000 LTD -B4
1984 Yamaha FJ1100
1972 Honda CL350 (sold)

Attachments:

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

  • pete greek1
  • pete greek1's Avatar
  • Offline
  • User
  • Posts: 1510
  • Thanks: 185

Re: Front Brake Clunk at any speed

29 Oct 2014 13:31
#652111
That'll do it :)
1980 LTD 1000..,1976 LTD 900, have the 1000&900 now. the rest are previous= 1978 KZ 650 B.., 1980 Yamaha XT 500..,1978 Yamaha DT 400.., 1977 Yamaha yz 80..,Honda trail ct 70.., Honda QA 50...5-1/2 hp brigs & straton CAT chopper mini bike...3-1/2 hp mini bike (WHEN GAS WAS ABOUT 45 CENTS A GALLON)!!!!

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

  • PLUMMEN
  • PLUMMEN's Avatar
  • Offline
  • User
  • Posts: 8139
  • Thanks: 104

Re: Front Brake Clunk at any speed

29 Oct 2014 14:18
#652119
Pm brian kz10006,he should have some bolts.Use blue loc tite on all your caliper bolts when you reinstall them. :)
Still recovering,some days are better than others.
The following user(s) said Thank You: Grnole

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

  • Zephyrrider
  • Zephyrrider's Avatar
  • Offline
  • User
  • Posts: 586
  • Thanks: 50

Re: Front Brake Clunk at any speed

29 Oct 2014 15:49
#652131
Mine does that very occassionally under heavy braking while at the same time hitting a bad lump or pot hole and on our roads you play dodge the shit bit of road all the time cause they are all fucked in the country - dangerous.
Have new steering bearings - adjusted correctly, new fork oil, new pads, all caliper bolts correct torque ,anti rattles good, discs in as new condition. Mine is due to caliper wear after 170,000 km (a lot of twisties) - very tiny amount of play. Passes the rocking test - no noise whatsoever.
Mick
1994 ZR750 Zephyr C4.

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

  • weales
  • weales's Avatar
  • Offline
  • User
  • Posts: 247
  • Thanks: 31

Re: Front Brake Clunk at any speed

29 Oct 2014 19:51
#652166
Make sure you have enough clearance between the caliper mounting bolts and the disc! - some bolts require an additional washer for this.
Current Project
1968 Norton P11A Desert Sled
Other bike (and daily ride)
2004 Yamaha FZR 600
Previous Bikes
78 Z1-R (resto)
91 Zephyr 750
73 Mach IV (Resto)
78 Z1-R
78 Z1-R (stolen)
76 Z900
76 Z650
73 Mach IV
72 Mach III
The following user(s) said Thank You: PLUMMEN, Grnole

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

Powered by Kunena Forum