valve specs on 06 crf250r


11 replies to this topic
  • nick524

Posted March 18, 2007 - 08:20 PM

#1

i need to know the intake and exhaust valve settings for a stock 2006 crf250r. any help would be awesome!

  • rhino roof

Posted March 18, 2007 - 08:37 PM

#2

Exhaust .005 intake .011 is what Honda specs.

  • Hit_the_set

Posted March 19, 2007 - 05:31 AM

#3

Check out the sticky post all about valves on the top of the page.

  • Honda_250f_rider

Posted March 19, 2007 - 07:23 AM

#4

the ranges are:

Intake .004-.006 inches
Exhaust .010-.012 inches

I set mine at the top of the range when shimming is needed.

  • weatherman64

Posted March 19, 2007 - 07:39 AM

#5

intake .004"-.006"
exhaust... factory spec is .010"-.012" but some people run as tight as .007"

  • Racer24

Posted March 19, 2007 - 03:48 PM

#6

Sticky of FAQ's

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • tomjv

Posted August 13, 2012 - 09:22 AM

#7

My 2006 CRF250r measures as follows:
R intake = 0
L intake = .005

R exhaust = .009
L exhaust = .009
Can someone tell me what size shims to install?
Thanks!
TomJV

  • tomjv

Posted August 13, 2012 - 01:47 PM

#8

Never mind . . . I'm learning and realize I need to get the kit, then pull it apart and use my micrometer!
Thanks anyway!
TomJV

  • DTA HONDA

Posted August 13, 2012 - 03:59 PM

#9

Never mind . . . I'm learning and realize I need to get the kit, then pull it apart and use my micrometer!
Thanks anyway!
TomJV


Get the shims from rocky mountain they're only 1$ for 1. instead of 7 for oem
http://www.rockymoun...alve-Shim/SHIMS

I shimmed my right intake valve way down cause my bike wouldnt start. and its ran fine so far. and its been over 7 hours.

  • XXxxXXxx

Posted August 13, 2012 - 11:40 PM

#10

Never mind . . . I'm learning and realize I need to get the kit, then pull it apart and use my micrometer!
Thanks anyway!
TomJV


You need to see what size is in there now and then go down until you get clearance, then adjust the correct clearance. You won't know what shim you need until you have clearance.

  • tomjv

Posted August 14, 2012 - 02:55 PM

#11

Ok. Let's say I'm gonna shim.
I take a measure. Then, I remove the existing shim and measure it. Then I subtract the underage from the existing shim and select/install a new shim. Ok.
How much assembly do I have to perform to get a new measure? I mean, do I have to torque everthing back or can I lay the cam in there and get a quick and dirty read?
TomJV

  • CRF rider

Posted August 15, 2012 - 08:42 AM

#12

Ok. Let's say I'm gonna shim.
I take a measure. Then, I remove the existing shim and measure it. Then I subtract the underage from the existing shim and select/install a new shim. Ok.
How much assembly do I have to perform to get a new measure? I mean, do I have to torque everthing back or can I lay the cam in there and get a quick and dirty read?
TomJV


I'd throw the cam on there and then atleast snug it down. With such little tolerances the difference between tightening and not tightening could cause a difference.





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