'98 CBR919 Carby cruising issues - Honda Motorcycles - FireBlades.org
Honda FireBlade Discussion of the Honda CBR 900RR, Honda CBR 929RR, Honda CBR 954RR, and Honda CBR 1000RR Motorcycles.

User Tag List

LinkBack Thread Tools
post #1 of 1 Unread 11-30-2019, 8:22 AM Thread Starter
Join Date: 09-16-2018
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 3 Post(s)
Reputation Power: 0
'98 CBR919 Carby cruising issues

Hi all.
My '98 919 has a K & N and a Yoshi Slip on. #40 pilot jets and #125 main Jets and mixture 2 1/2 turns out. Factory needle and single washer.

Now, with this set up, it runs a little rich at about 3750rpm causing some fluffiness at cruise. I used different mixture turns and it made little difference. I put 2 x extra washers under the needle, now it bogs down at take of and has fluffiness at 2500rpm and 4000rpm.

So my questions are:
a) Should I get rid of the K & N filter and put a stock filter back in?
b) If I remove ALL washers, from under the needle, and put #128 mains in it, should this solve the issue? If not, could you explain what part does what function, at what revs.

Thanks in advance
Cattz is online now  
Sponsored Links

  Lower Navigation
Go Back   Honda Motorcycles - FireBlades.org > Honda Motorcycle Models > Honda FireBlade

Quick Reply

Register Now

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

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


Confirm Password:
Email Address
A valid e-mail address is REQUIRED. You will not have access to any site features until you activate your account using the activation e-mail that is sent to this address.

Email Address:


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 Off

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