valve specs on 06 crf250r

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

Exhaust .005 intake .011 is what Honda specs.

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

the ranges are:

Intake .004-.006 inches

Exhaust .010-.012 inches

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

intake .004"-.006"

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

Sticky of FAQ's

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

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

Thanks anyway!

TomJV

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.rockymountainatvmc.com/p/43/53/210/922/-/26634/Pro-X-Valve-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.

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.

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

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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