89 zx600 jetting? - ZX Forums
 
LinkBack Thread Tools
post #1 of 4 (permalink) Old 05-29-2012, 09:44 PM Thread Starter
Newbie
 
Joined: Sep 2010
From: Mendon

Posts: 25
89 zx600 jetting?

i have an 89 zx600 that i have been working on for a while. i removed the airbox to do cheap pod filters but cant quite figure out the jetting. i have 132.5's in the carbs now and on a cold start up if i try to rev it, the bike just dies. if i wait for it to warm up to running temp it runs pretty good but it still has some bogging issues in higher rpms and the exhaust smells horrid. half way to running temp if i hold the throttle back it bounces between 2k and 5k rpms about 10-15 times the finally revs up.

does this sound like i need to go larger on the jets? im thinking im not quite getting enough fuel. does anyone have a similar setup? what jets are you running?

carbs are synchronized perfectly, rebuild kits through all of them, factory exhaust and factory cams, brand new spark plugs. the only thing i changed is the airbox to pod filters.
Connella08 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 (permalink) Old 06-03-2012, 10:56 AM
Newbie
 
Joined: Apr 2012
From: Sweden

Posts: 2
On my b ike, similar (-90) there is a set of vaccum-carbs. This type of carb need the STD-airbox to work. This is because they work in pressure difference, you do not lift the thottle via the cable, it is controlled via (under-) pressure.
Removing airbox messes the pressure differences up, and all kind of problem appears.
If you do not believe me, put the STD-airbox back and test.
RalphSweden is offline  
post #3 of 4 (permalink) Old 06-03-2012, 10:59 PM Thread Starter
Newbie
 
Joined: Sep 2010
From: Mendon

Posts: 25
i would but the boots on the factory air box were dried out and shrank, making it impossible to put on the backs of the carbs. i got them to go on at one point, but eventually popped themselves back off due to the rubber being too hard.
Connella08 is offline  
post #4 of 4 (permalink) Old 06-21-2012, 01:45 PM Thread Starter
Newbie
 
Joined: Sep 2010
From: Mendon

Posts: 25
i decided to clean my carbs yesterday and found a bunch of junk in the bowls. blew them all out and it runs much better. it stumbles a lot when cold, but only hits a minor flat spot when completely warm. do you think maybe i need to go up or down a jet size?
Connella08 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the ZX Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome