CBR 954RR 2002 - 2003 - CBR 954RR Forum

Valve shimming

  #1  
Old 10-05-2013, 03:38 PM
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Default Valve shimming

Does any one know good place in nj where to shim the valves? And not to get ripped off in the process.
 
  #2  
Old 10-05-2013, 06:16 PM
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If they actually need shimming, it's a pretty labor intensive job - it's not going to be cheap at any shop you go to.
 
  #3  
Old 10-05-2013, 06:26 PM
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Yes the valves need to be adjusted I checked and they are way out of specs... I have 41000 miles and they were never adjusted. I called bunch of local dealers and they want from 1600 to 1800... for that price I rather blow this motor and get another one...its going to be cheaper then adjusting them...
 
  #4  
Old 10-05-2013, 06:42 PM
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It's a big job - you could just take the opportunity to learn to do it yourself - and it'd be a lot cheaper than both of those options...

It's not an insanely hard job, just a labor intensive job.
 
  #5  
Old 12-01-2013, 03:47 PM
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Do you folks tend to just re shim back to OEM middle or tend to re shim to the high or low side of oem?
 
  #6  
Old 12-02-2013, 06:09 PM
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Here in Northern California, Bay Are, I was quoted about $400 to do the valves by the local shop. $1600 to $1899 is absurd for sure. I ended up doing them myself. The to hardest parts are removing the cam chain tensioner and lining up the cam ends when reassembling. This is due to the near total lack of clearance due to the frame. Some people, and I may do it next time, will simply raise the frame off the motor. By the time you have stripped it to do the valves a few more hours to pull the motor doesn't seem so bad I suppose. I took digital photos of my head with the cams at TDC after removing the valve cover it helped a lot. Get a service manual and go for it. Keep track of each valves clearance and accompanying shim, excel works well for that, and you may be able to swap them around and only need to buy a few. Good luck and ask questions if you have problems. we can walk you through it here on the board.
 
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Old 12-02-2013, 07:28 PM
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I will be going thru the same thing myself once my engine is back together. Youtube and this forum is hopefully going to teach me how the process goes and get things within oem spec. You can do it, it may be best to drop the engine like said above, it will make things much easier.
 
  #8  
Old 12-03-2013, 07:05 PM
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Where in NJ are you?
 
  #9  
Old 12-03-2013, 11:21 PM
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Guys you'll say I'm crazy....I used to have a cbr f3 and the valves/shims were way off spec, so you know what I did???? Sanding!!!!!!!

Yep, with a fine sandpaper I sanded for hours, that was 25 thousand miles ago and the ol cbr is still running like a champ ( sold it to a friend).

Just make sure to sand in circles or 8s, so you get an even surface, it'll take a couple of hours....
 
  #10  
Old 12-04-2013, 06:43 AM
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The sanding trick won't do much good if a replacement shim needs to be thicker than what is currently in there. I've seen Hotcams shim kits on eBay for around $65. I think I'd rather go that route than spending hours and hours sanding them down.
 

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