Feeler Gauges YZF 450

4 replies to this topic
  • mariop

Posted June 15, 2008 - 10:29 AM


Anyone know if I am going to need tapered feeler gauges to check my valves on a 08 YZF 450? All mine are 1/2" flat and angled blades. Will the 1/2" fit? Also, there is quite a lot of room for play with the Yamies, so I am going to shoot for the middle (i.e. intake .010-.015 so I am going to shoot for .013). Dang Honda's only give you .001 each way!


  • grayracer513

Posted June 15, 2008 - 01:14 PM


The standard automotive gauges will fit easily, but you're mixing units with your valve specs. The YZ450 calls for .10-.15mm on the intakes, not .010-.015", and the exhausts are .20-.25mm. This is roughly .004-.006", and .008-.010", respectively, so the spec is just as critical as the CRF. The difference with the YZ is that you won't need to adjust them often, if ever.

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  • crazyal426

Posted June 15, 2008 - 02:01 PM


Automotive feeler gauges usually have both standard and metric numbers on the feeler gauge. Like grey said "roughly". They are close, very close. Good Luck!!!

  • mariop

Posted June 15, 2008 - 04:12 PM


Sorry about the thousandths thing, I just got them mixed up. Before I check this I'll have the manual in my hand.:thumbsup:

  • mariop

Posted June 15, 2008 - 04:16 PM


Oh yeah, thanks for the help, now I'm ready to check them. I didn't want to open it up and find out I needed to go find some narrow feeler gauges. First time on the new 08, if they are within were ready to go!

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