Question for those who did the valve check

[trepetti]

So I just checked mine yesterday, and I because of the tools I used I am concerned about the level of precision needed. The feeler gauge set I used was the typical inches and mm type, with blades of .004,.005,.006,.007,.008,.009, etc. In mm, that gives me a range of .102 - .229, in .025mm increments

So when I test a valve and it passes the .178 but not the .203, I am logging that at .178.

The only thing I can think of is that there are other feeler sets with increments smaller than .025mm.

Am I doing this the right way?

 

[FinalImpact]

I used a standard (non-metric set) and encountered that also. Use two smaller values paired. My set had 0.0002" 0.0015, 0.0010 0.0005...

See my posts in the correcting valve adjustment thread/sticky. I used that method then to increase the precision. And yes, doubling or stacking gauges is acceptable if they are clean and not bent or deformed.

Edit: post 23 here.... How to adjust valve lash

Measuring / Using the feeler gauges:
When you find one gauge is loose but the next one up is too tight to go in, drop down ONE WHOLE SIZE and double up using a thinner gauges by stacking them.

Example: lets say we are measuring and find the following:
0.012" = too tight
0.011" = slides in easy and feels loose

Increase your measurement Resolution / Pair up smaller gauge values:
0.010" + 0.0015" = 0.0115"
- This gives you better resolution than a single gauge. Plus thinner combinations are more flexible (0.0015"). Yes, it takes longer but its worth it! That's why you see those 0.0065" values in the INTAKE section.​