Valve Adjustment
Login  | |
|
Valve Adjustment - 5/30/2008 7:12:29 AM
|
|
|
kilgoretrout
Posts: 195
Joined: 3/30/2006
From: PA, USA
Status: offline
|
Hello all. I just adjusted my valves last night. I was getting some valve tap at lower rpms (maybe I just couldn't hear it up high) and on downshifts. I figured that since it hadn't been done since the factory, it was about due.
All went as well as can be expected, and it isn't really a bad job at all. It takes some patience and a few hours, but not nearly as bad as you'd think.
I checked the cam chain while I was in there (per shadow  ) and there was maybe 1-2mm slack in it. I know there is supposed to be no slack, but i had to use a screwdriver (with plastic cover) to even move it that much, so I'd say that could just be slack in the links themselves? Wishful thinking, maybe...
Anyway, intake valves were almost all too tight, except for maybe 2. Exhaust valves were almost all good, a couple were tight, one was loose. I adjusted them all to take the correct thickness gauge, but so they would not accept the next size bigger. It worked out pretty good to use the next size bigger gauge when adjusting, and then torque them, then recheck. Usually, I'd find that it would tighten them up just enough to be almost perfect. The bike now runs so much better. No tap on engine breaking or at lower rpms. So smooth.
I didn't actually think it would make a difference, so it was a pleasant surprise. Now. I guess it's time for a carb sync.
I did, however, manage to snap a valve cover bolt. 
This really pissed me off considering I decided to torque them to spec and everything (worked on cars/trucks/vans etc. all my life and bought a torque wrench for this bike). Still snapped it. So if anyone has a spare one, I'd very much appreciate it! The hole is covered with electrical tape at the moment. Not good.
|
|
|
|
|
|
|
RE: Valve Adjustment - 5/30/2008 7:31:54 AM
|
|
|
Shadow1
Posts: 2099
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline
|
Damn, that's rough luck...strange, breaking at under the spec torque setting - maybe metal fatigue ? I'll have a scratch through my spares bin and see what's available.
|
|
|
|
|
RE: Valve Adjustment - 5/30/2008 7:43:00 AM
|
|
|
kilgoretrout
Posts: 195
Joined: 3/30/2006
From: PA, USA
Status: offline
|
I know. I couldn't believe it snapped. Oh well.
I very much apprecate your bin diving for me. It looks like a pretty special bolt. I suppose I could probably just buy an M6, and use a washer? Might work?
|
|
|
|
|
|
|
RE: Valve Adjustment - 5/30/2008 11:14:54 AM
|
|
|
Shadow1
Posts: 2099
Joined: 12/21/2007
From: Pinetown, South Africa
Status: offline
|
WHAT ? Did you guys use the same torque wrench ? (set to KG's/cm2 ?) he he
Stroke of luck for you, Kilgore, having another member "bust a bolt" I didn't use a torque wrench (wrong, I know) but I must confess I thought the settings were too high - I used about 8-10ft lbs on mine with a ratchet wrench.
Hey Art, any advice on how to get the old bolt out.....?
|
|
|
|
|
RE: Valve Adjustment - 5/30/2008 11:41:17 AM
|
|
|
kilgoretrout
Posts: 195
Joined: 3/30/2006
From: PA, USA
Status: offline
|
Oh yeah, Art, I'm definately interested. Would also like to hear how you got it out, like shadow said. I was just wondering the same thing. Thinking "this is gonna be a bitch"....
I set my clicker to 10lbs (120in/lbs) like the manual said, and snap!
Wrench can't be right...
Just let me know what you want for a couple of them (better get a spare if you don't mind).
That would be awesome!
|
|
|
|
|
|
|
RE: Valve Adjustment - 6/3/2008 8:16:32 PM
|
|
|
kilgoretrout
Posts: 195
Joined: 3/30/2006
From: PA, USA
Status: offline
|
Cool. I'll drop you a line on your email and a PM with my address. If you send me yours, I'll mail you a few bucks...
I was thinking of trying to use my craftsman screw extractors. Might work. I just don't want to end up with metal shavings in my head.
Sorry I didn't get back to you sooner. This site must have had some serious issues here lately. Still not sure exactly what that was all about...
Anyway, I would very much appreciate the bolt/s, and I thank you much in advance.
|
|
|
|
|
RE: Valve Adjustment - 6/3/2008 10:37:03 PM
|
|
|
devildogsc
Posts: 42
Joined: 1/3/2008
From: Greenville, SC
Status: offline
|
The site here has been having some really serious issues but I thought it was just me. Maybe not. K, your extractors should work fine, just bore with the next size higher drill bit and bore as shallow a hole as you can make the extractor bite to. You may have already known that, but I figured I throw it out there.
_____________________________
If we had ham we could have ham and eggs, if we had eggs.
|
|
|
|
|
RE: Valve Adjustment - 6/10/2008 1:45:11 PM
|
|
|
kilgoretrout
Posts: 195
Joined: 3/30/2006
From: PA, USA
Status: offline
|
Yeah, devil, that''s what I planned on doing. I think I''ll just turn on my big shop vacuum to try and suck up any metal pieces before they fall. That was my big concern.
|
|
|
|
 Today's Posts
Most Active Topics
Make A Donation
Forum Rules & FAQ
RSS Feeds
Advertising Info
|
Contact Us |
Advertising |
Automotive Directory |
About Us |
Archive |
Honda CBR Motorcycle Links |
Legal |
Privacy Policy |
© CBR Forum
CBR Forum .com is not affiliated with or endorsed by Honda Motor Company.
|
Printable Version
