Welcome, Guest
Username: Password: Remember me
  • Page:
  • 1

TOPIC: Help rejetting carbs on 2 1980 KZ1000 B4 LTD's

Help rejetting carbs on 2 1980 KZ1000 B4 LTD's 07 Jul 2020 13:31 #830037

  • Kawboy47
  • Kawboy47's Avatar Topic Author
  • Offline
  • Member
  • Member
  • Posts: 4
  • Thank you received: 0
I'm looking for a place to start the rejetting process I understand there are a lot of variables involved. Elevation range 225-500. Bikes have original Mikuni VM29 smothbore carbs with 102.5 main jets and #15 pilots
1 Bike has K&N pods and stock exhaust
1 Bike has K&N pods and Kerker 4-1 exhaust
Any help would be much appreciated

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

Help rejetting carbs on 2 1980 KZ1000 B4 LTD's 07 Jul 2020 15:19 #830053

  • zed1015
  • zed1015's Avatar
  • Offline
  • Member
  • Member
  • Posts: 1864
  • Thank you received: 715
Original carbs on those are VM28's ..
Not VM29 smoothbores.
Stock 28's measure 28 mm at the venturi and nearly 29 mm at the boot stub.
You should leave all settings stock.
Fit air corrector jets and go up a few of sizes on the mains to start and work down .
I'd go for 115's on the mains and go from there.
Kerker should end up around 110 to 112.5 and the stock exhaust 105 to 110.

If they have been fitted with 29 Smoothies then they already have air jets as stock.

To identify whether you have smoothbores look for the circled square casting as shown in the attached pic.
If this is not there they are not smoothbores.
Attachments:

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

Last edit: by zed1015.

Help rejetting carbs on 2 1980 KZ1000 B4 LTD's 07 Jul 2020 17:13 #830059

  • Kawboy47
  • Kawboy47's Avatar Topic Author
  • Offline
  • Member
  • Member
  • Posts: 4
  • Thank you received: 0
You are correct sir, my mistake they are 28 mm see attached picture. So the air corrector jets will fit this model carb and take care or all low end needs?
Attachments:

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

Help rejetting carbs on 2 1980 KZ1000 B4 LTD's 08 Jul 2020 00:41 #830066

  • zed1015
  • zed1015's Avatar
  • Offline
  • Member
  • Member
  • Posts: 1864
  • Thank you received: 715

Kawboy47 wrote: You are correct sir, my mistake they are 28 mm see attached picture. So the air corrector jets will fit this model carb and take care or all low end needs?

Yes! For VM24, VM26 and your VM28's

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

Help rejetting carbs on 2 1980 KZ1000 B4 LTD's 08 Jul 2020 05:53 #830071

  • Mikaw
  • Mikaw's Avatar
  • Offline
  • Sustaining Member
  • Sustaining Member
  • Posts: 1373
  • Thank you received: 297
If your running pods the correctors work great... the best way to tell what size carbs you have is to measure the bore on the engine side... these are 28mm with pump.



The red circle indicates the proper air passage to install the correctors

1976 KZ 900 A4
1976 KZ 900 B1 LTD
1978 KZ 1000 B2 LTD
Kowledge Speaks, But Wisdom Listens.
Jimi Hendrix.
Attachments:
The following user(s) said Thank You: Kawboy47

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

  • Page:
  • 1
Powered by Kunena Forum