KZ750 CV34 carb jetting.

  • JohnLuke
  • Topic Author
  • Offline
  • User
  • 1982 KZ750N Spectre
More
05 Nov 2018 21:47 - 06 Nov 2018 06:40 #793446 by JohnLuke
KZ750 CV34 carb jetting. was created by JohnLuke
Look at the comments, you’ll see my name in the comments. I have a 1982 KZ750N with CV34 carbs on them with a #125 main and a #62 secondary. What do I need to do to the jets to run pretty much open exhaust and 4into1 performance air filters? Here is a photo of a comment I sent a guy. He has a very similar setup to mine and I was curious what he ran with the jets. He said this.....

Attachment not found

Last edit: 06 Nov 2018 06:40 by JohnLuke.

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

More
06 Nov 2018 04:47 - 06 Nov 2018 05:25 #793452 by undiablo
Replied by undiablo on topic KZ750 CV34 carb jetting.
Hi John. You should use a Dynojet kit for that.
#35 #62 #125 is stock jetting with N01A needle.
#35 #62 #DJ130 and DNO103 needle (clip in 4th groove). This needle has a base diameter of 2.49mm VS 2.50mm stock (thus making idle to 1/8" throttle richer). This setup is for 4 into 1 exhaust and K&N replacement filter inside airbox.
#35 #62 #DJ136 and DNO103 needle (clip in 4th groove). This setup is for 4 into 1 exhaust and individual K&N air filter pods.

Kawasaki KZ 750/4 LTD 1981
Kawasaki KLR 650 2011
Argentina - Buenos Aires
Last edit: 06 Nov 2018 05:25 by undiablo.
The following user(s) said Thank You: JR, Nessism

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

More
06 Nov 2018 05:13 #793455 by undiablo
Replied by undiablo on topic KZ750 CV34 carb jetting.

Kawasaki KZ 750/4 LTD 1981
Kawasaki KLR 650 2011
Argentina - Buenos Aires
Attachments:

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

  • JohnLuke
  • Topic Author
  • Offline
  • User
  • 1982 KZ750N Spectre
More
06 Nov 2018 06:41 #793460 by JohnLuke

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

More
06 Nov 2018 07:20 #793464 by undiablo
Replied by undiablo on topic KZ750 CV34 carb jetting.
Fuel mixture screw. 3.5 turns out... you can´t go further.

Kawasaki KZ 750/4 LTD 1981
Kawasaki KLR 650 2011
Argentina - Buenos Aires

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

  • JohnLuke
  • Topic Author
  • Offline
  • User
  • 1982 KZ750N Spectre
More
06 Nov 2018 08:00 #793465 by JohnLuke
Replied by JohnLuke on topic KZ750 CV34 carb jetting.
So what do you think he was referring to?

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

More
06 Nov 2018 10:05 #793466 by undiablo
Replied by undiablo on topic KZ750 CV34 carb jetting.
He used the fuel mixture screw 4 turns out. It is beyond limit... that tells you need a bigger slow pilot jet OR a smaller base diameter needle.

Kawasaki KZ 750/4 LTD 1981
Kawasaki KLR 650 2011
Argentina - Buenos Aires
The following user(s) said Thank You: JohnLuke

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

  • JohnLuke
  • Topic Author
  • Offline
  • User
  • 1982 KZ750N Spectre
More
06 Nov 2018 11:37 #793467 by JohnLuke
Replied by JohnLuke on topic KZ750 CV34 carb jetting.
Where do I find a larger slow pilot jet?

So just to get this clear, my 1982 KZ750 Spectre with CV34 carbs, pods from 4into1, and straight though exhaust. I will need to maybe take that air fuel mixture screw out 1 or 1/2 turn. And get bigger slow pilot jets?

Does that sound like a plan?

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

  • JohnLuke
  • Topic Author
  • Offline
  • User
  • 1982 KZ750N Spectre
More
06 Nov 2018 16:04 - 06 Nov 2018 20:19 #793480 by JohnLuke
Replied by JohnLuke on topic KZ750 CV34 carb jetting.
So will it be correct if I get a # 35 or #40 pilot jet from jetsrus?
Last edit: 06 Nov 2018 20:19 by JohnLuke.

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

More
07 Nov 2018 05:48 #793515 by undiablo
Replied by undiablo on topic KZ750 CV34 carb jetting.
First check what your carbs already have.
Spectre model have only 2 jets (slow pilot jet and primary main jet) and a fatter needle N10A.

Kawasaki KZ 750/4 LTD 1981
Kawasaki KLR 650 2011
Argentina - Buenos Aires

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

  • JohnLuke
  • Topic Author
  • Offline
  • User
  • 1982 KZ750N Spectre
More
07 Nov 2018 06:00 #793517 by JohnLuke
Replied by JohnLuke on topic KZ750 CV34 carb jetting.
Okay, well I currently have a 125 main and a 62 pilot. I think that what I call them. But I do have a set of #90 mains and #65 pilots. If I’m not making sense I’ll do my best to take a photo later.

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

Powered by Kunena Forum