Valve Adjustment necessary? - KawiForums - Kawasaki Motorcycle Forums
 
LinkBack Thread Tools Display Modes
post #1 of 7 (permalink) Old 12-18-2016, 01:51 AM Thread Starter
Jr. Member
 
fegpa63's Avatar
 
Join Date: Dec 2016
Location: Montana
Posts: 3
 
Valve Adjustment necessary?

Hey guys, bought a 2008 ninja 250r from a college kid who basically changed the oil and sounds like thats about it. He was 2nd owner and I am 3rd owner, he had no idea the valves needed adjusting and told me he never had that done. It's got 9500 miles on it and runs great, no issues at all

Think it's worth paying someone to adjust the valves if I'm not having any issues? Or just ride as is and get them checked out at like 12k or 15k? What would be a fair price to have that service done
fegpa63 is offline  
Sponsored Links
Advertisement
 
post #2 of 7 (permalink) Old 12-27-2016, 02:38 AM
Jr. Member
 
Join Date: Aug 2015
Posts: 103
  
Quote:
Originally Posted by fegpa63 View Post
Hey guys, bought a 2008 ninja 250r from a college kid who basically changed the oil and sounds like thats about it. He was 2nd owner and I am 3rd owner, he had no idea the valves needed adjusting and told me he never had that done. It's got 9500 miles on it and runs great, no issues at all

Think it's worth paying someone to adjust the valves if I'm not having any issues? Or just ride as is and get them checked out at like 12k or 15k? What would be a fair price to have that service done
How does it sound and feel? If it sounds good and you're not noticing a weird off balanced vibration, then chances are you don't need to have any work done on the valves.

If you're finding that you pull up to a stop light and have to look at the tach in order to know the bike hasn't stalled, then you definitely don't need to get that checked. If you're hearing a valve slap sound, then you definitely do need to have it checked before something goes wrong. Most bikes will fall somewhere in the middle.

But, really, with only 10k miles on it, the valves should still be pretty close and anytime you have a mechanic in there doing things they can make mistakes.
pfranks is offline  
post #3 of 7 (permalink) Old 12-29-2016, 10:05 PM
Jr. Member
 
Join Date: Aug 2016
Location: planet earth
Posts: 140
 
A note about different types of valve adjustment:

For the 250 Ninja and other less expensive engines, the locknut type adjusters tend to get too loose over time, so the engine gets noisier and loses a little power.

For sportbike engines with shim under bucket adjustment, the adjustment gets tighter over time and the engine gets quieter, until one of the valves gets so tight that the valve head breaks off and destroys that piston, if not more.

For the 250 Ninja, I saw a poor quality but good Youtube video about taking the cam chain adjuster apart for cleaning and lubing with a high quality grease, that also causes extra noise when loose.
ZZR600-2008 is offline  
 
post #4 of 7 (permalink) Old 12-31-2016, 04:16 PM Thread Starter
Jr. Member
 
fegpa63's Avatar
 
Join Date: Dec 2016
Location: Montana
Posts: 3
 
OK thing runs great certainly no odd noises and sounds very normal so I think I am going to wait until after this season and have it checked around the 12k or 15k mark, thanks for the input.
fegpa63 is offline  
post #5 of 7 (permalink) Old 01-01-2017, 11:47 AM
Jr. Member
 
Join Date: Aug 2016
Location: planet earth
Posts: 140
 
The owners manual has a valve adjustment check interval based on the worst cases, for someone riding at redline or bouncing off the rev limiter all the time and only changing the oil every 8,000 miles.

If you ride more normally and change the oil every 4,000 miles, you can probably safely extend the valve clearance checks some more miles.
ZZR600-2008 is offline  
post #6 of 7 (permalink) Old 02-01-2017, 09:27 PM
Jr. Member
 
Ebny250's Avatar
 
Join Date: Jul 2011
Location: Key West, FL
Posts: 84
      
Quote:
Originally Posted by ZZR600-2008 View Post
The owners manual has a valve adjustment check interval based on the worst cases, for someone riding at redline or bouncing off the rev limiter all the time and only changing the oil every 8,000 miles.

If you ride more normally and change the oil every 4,000 miles, you can probably safely extend the valve clearance checks some more miles.


I personally put over 110,000 miles on my 09 ninja 250, with ticking valves, over 4yrs time. My buddy broke the trans, I completely disassembled the entire head looking to see if it had a valve issue after all the abuse...the valves were perfectly fine! just slightly out of clearance! I swapped the whole engine for one with 4,000 miles, w/valve ticking pretty loud... $500. For a valve job on a bike worth $2,000. I am very sick of that sound.


Sent from my iPhone using Tapatalk

Originally Posted by bubbleboys
*sigh* you and your constant "anything below 600 isn't a real bike" rhetoric
Ebny250 is offline  
post #7 of 7 (permalink) Old 02-02-2017, 09:41 AM
Jr. Member
 
Join Date: Aug 2016
Location: planet earth
Posts: 140
 
The 250 Ninja has a first valve adjustment check at 600 miles, when removing the break-in oil. That check should not be extended to later.
ZZR600-2008 is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the KawiForums - Kawasaki Motorcycle 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
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not 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 On
Pingbacks are On
Refbacks are On

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