98/99 Fork oil issue - 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 4 Old 03-12-2014, 6:30 AM Thread Starter
 
Join Date: 03-13-2011
Location: Yorkshire, UK
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
98/99 Fork oil issue

Hi all, I wonder if anyone can help.
I have a 97 machine with a later 99 front end in fitted by the previous owner. It does indeed have the later brakes and bottom yoke to support this

I've just renewed the fork seals but I'm struggling with oil fill levels/air gaps.

The only information I can find is for post 97 bikes which states oil fill capacity is 540cc with an air gap of 114mm.

When I put 540cc of oil in I have an air gap of 147mm which is way off the mark. Measurement has been taken with the no spring fitted and the fork fully compressed.

I presumed the 540cc would be a starter fill capacity which is then fine tuned by checking/setting the air gap.

Any one had issues like this before or is my post 97 specs incorrect?
Dave893 is offline  
Sponsored Links
Advertisement
 
post #2 of 4 Old 03-12-2014, 7:08 AM
Global Moderator
 
bladeracer's Avatar
 
Join Date: 11-14-2003
Location: Perth, WestOz
Age: 53
Posts: 32,034
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Reputation Power: 229
                     
Re: 98/99 Fork oil issue

Quote:
Originally Posted by Dave893 View Post
Hi all, I wonder if anyone can help.
I have a 97 machine with a later 99 front end in fitted by the previous owner. It does indeed have the later brakes and bottom yoke to support this

I've just renewed the fork seals but I'm struggling with oil fill levels/air gaps.

The only information I can find is for post 97 bikes which states oil fill capacity is 540cc with an air gap of 114mm.

When I put 540cc of oil in I have an air gap of 147mm which is way off the mark. Measurement has been taken with the no spring fitted and the fork fully compressed.

I presumed the 540cc would be a starter fill capacity which is then fine tuned by checking/setting the air gap.

Any one had issues like this before or is my post 97 specs incorrect?

Did you stroke the damper rod to bleed the air out, and is the damper rod fully compressed as described in the manual?
I would just fill to the specified level, volume is irrelevant.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
bladeracer is offline  
post #3 of 4 Old 03-12-2014, 10:17 AM Thread Starter
 
Join Date: 03-13-2011
Location: Yorkshire, UK
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Reputation Power: 0
 
Re: 98/99 Fork oil issue

Hi bladeracer, yes, the damper has been well stroked to remove any air.
Reading around the web the key measurement seems to be the air gap (level) and not the volume fill quoted. This obviously begs the question of why quote a fill capacity if it is (in this case) inaccurate?
Dave893 is offline  
Sponsored Links
Advertisement
 
post #4 of 4 Old 03-12-2014, 10:32 AM
Global Moderator
 
bladeracer's Avatar
 
Join Date: 11-14-2003
Location: Perth, WestOz
Age: 53
Posts: 32,034
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Reputation Power: 229
                     
Re: 98/99 Fork oil issue

Quote:
Originally Posted by Dave893 View Post
Hi bladeracer, yes, the damper has been well stroked to remove any air.
Reading around the web the key measurement seems to be the air gap (level) and not the volume fill quoted. This obviously begs the question of why quote a fill capacity if it is (in this case) inaccurate?

The same reason they quote a volume for the engine oil and coolant, so you have some idea of how much you'll need. But the volume is not relevant, the level is.

"I won't forget that ride for a while. Maybe you're right. Living fast might be worth the final crash. Maybe that's the secret you fliers know." - Flight of the Intruder
bladeracer is offline  
Reply

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

Quick Reply
Message:
Options

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

Password:


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:
OR

Log-in










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



Similar Threads
Thread Thread Starter Forum Replies Last Post
'12 cbr1000rr front fork issue Razz Honda FireBlade 14 04-06-2013 4:01 PM
04 600rr Fork Disassembly Issue burner303 Honda CBR 600 3 05-07-2011 2:36 AM
954 Fork Issue KSJNX Honda FireBlade 11 12-09-2009 12:31 PM
Might have fork issue and need HELP biggup21 Honda FireBlade 5 06-28-2008 9:54 AM
1000rr Front Fork Issue The Closer Honda FireBlade 2 03-25-2008 5:06 PM

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