Valve Lash 2005 KZ1000P

  • ken19
  • ken19's Avatar Topic Author
  • Offline
  • User
  • Posts: 57
  • Thanks: 4

Valve Lash 2005 KZ1000P

28 Feb 2023 12:04
#880873
Hey!

2005, KZ1000P. Valve lash question. First I did go to the valve adj sticky but pics were deleted by youtube. My question is--- when following the book the valve cam lobes are at different positions when cams are as specified and some measurements end up a little high,,, others a little low... but...

When I check positioning each lobe 180 degrees away from the shim, all fall into specs. It seems a bit confusing. Why wouldn't they want all tolerances checked in the same manner?

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

  • zed1015
  • zed1015's Avatar
  • Offline
  • User
  • Posts: 3091
  • Thanks: 1645

Re: Valve Lash 2005 KZ1000P

28 Feb 2023 13:11
#880877
Kaws method is just to save time in the shop to check more than one shim as a time per camshaft position.
Just set them with the lobe pointing directly away from the shim (180 degs) and you can't go wrong.
Set them as close to 0.15mm as possible with stock cams.
AIR CORRECTOR JETS FOR VM CARBS AND ETHANOL RESISTANT VITON CHOKE PLUNGER SEAL REPLACMENT FOR ALL CLASSIC AND MODERN MOTORCYCLE CARBURETTORS
www.kzrider.com/23-for-sale/611992-air-c...lide-mikunis?start=0





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

  • Nessism
  • Nessism's Avatar
  • Offline
  • Sustaining Member
  • Posts: 7561
  • Thanks: 2922

Re: Valve Lash 2005 KZ1000P

28 Feb 2023 15:23 - 28 Feb 2023 15:24
#880889
The later model big KZ method, which is the same as the Suzuki GS method, on how to position the cams is best, because it puts two adjacent valves on the base circle at the same time.  With the lobe pointing away from the valve, the adjacent valve spring is going to be depressed, and that results in the cam being pushed upwards in the cam bearing clearance, giving a false reading showing more clearance than there really is.  Realize of course, this is only .0015" or .002", but this can make a difference if you are on the SMALL end of the clearance range.  So, for example, if you measure .003", the actual is more like .002 or maybe .0015".   If you keep this in mind, and make sure to set all the clearances are at the top of the range, it's okay, to use the 180 degree method, though.
Ed
Carb O-ring Kits : www.kzrider.com/forum/3-carburetor/61807...-o-ring-kits?start=0

www.kzrider.com/forum/faq-wiki/618026-new-owner-things-to-know

1981 KZ750E2
www.kzrider.com/forum/11-projects/604901...z750e-project-thread
Last edit: 28 Feb 2023 15:24 by Nessism.
The following user(s) said Thank You: Jonas_Z1000j

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

  • SWest
  • SWest's Avatar
  • Offline
  • Sustaining Member
  • 10 22 2014
  • Posts: 23262
  • Thanks: 2840

Re: Valve Lash 2005 KZ1000P

28 Feb 2023 16:16
#880898
Makes sense being the cam bearing tolerance is .001-.006". 
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.

  • daveo
  • daveo's Avatar
  • Offline
  • Premium Member
  • Posts: 2879
  • Thanks: 720

Re: Valve Lash 2005 KZ1000P

28 Feb 2023 20:12 - 01 Mar 2023 11:30
#880908
.102 to .127 mm. seems to keep things running smooth and quiet.

photos.app.goo.gl/zsaCcPaMRKk38hDEA


[img
1982 KZ1100-A2
Last edit: 01 Mar 2023 11:30 by daveo.

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

  • ken19
  • ken19's Avatar Topic Author
  • Offline
  • User
  • Posts: 57
  • Thanks: 4

Re: Valve Lash 2005 KZ1000P

01 Mar 2023 09:02
#880938
Nessism wrote:
The later model big KZ method, which is the same as the Suzuki GS method, on how to position the cams is best, because it puts two adjacent valves on the base circle at the same time.  With the lobe pointing away from the valve, the adjacent valve spring is going to be depressed, and that results in the cam being pushed upwards in the cam bearing clearance, giving a false reading showing more clearance than there really is.  Realize of course, this is only .0015" or .002", but this can make a difference if you are on the SMALL end of the clearance range.  So, for example, if you measure .003", the actual is more like .002 or maybe .0015".   If you keep this in mind, and make sure to set all the clearances are at the top of the range, it's okay, to use the 180 degree method, though.

Jesus..... Man I never ever would have thought that! That said,,, I see the point! It would depend on the wear of the cam bearings but the compression of the spring adjacent would push up on the cam. That totally checks all the boxes. Thank you....

 

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

  • Jonas_Z1000j
  • Jonas_Z1000j's Avatar
  • Offline
  • User
  • Posts: 94
  • Thanks: 31

Re: Valve Lash 2005 KZ1000P

08 Mar 2023 08:12
#881246
Nessism wrote:
The later model big KZ method, which is the same as the Suzuki GS method, on how to position the cams is best, because it puts two adjacent valves on the base circle at the same time.  With the lobe pointing away from the valve, the adjacent valve spring is going to be depressed, and that results in the cam being pushed upwards in the cam bearing clearance, giving a false reading showing more clearance than there really is.  Realize of course, this is only .0015" or .002", but this can make a difference if you are on the SMALL end of the clearance range.  So, for example, if you measure .003", the actual is more like .002 or maybe .0015".   If you keep this in mind, and make sure to set all the clearances are at the top of the range, it's okay, to use the 180 degree method, though.
 
Good information!
Z1000 J2 -82 not so running restoration object anymore
Z900RS -21 Green/Yellow

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

Powered by Kunena Forum