Here’s an example. Let’s say we are using a small diameter valve spring retainer (as used on a beehive spring) on a small-block Chevy head and the mic reads an installed height of 1.900-inches ...

Micrometer Shootout The selection of micrometers on test. Left: Moore & Wright No. 964, centre: Mitutoyo 103-137, right: Daniu £8 micrometer.

Now, it might seem like hubris to think that you can actually shim the valves to a ten-thousandth when the go/no-go feeler gauges are only getting you to within one thousandth. You can’t. But there ...

Because these heads are meant to work with a 1.5:1 rocker, their tall valve guides can only handle maximum valve lifts of around 0.420 inch.

Pseudo spin valve cells with critical dimension 0.15 /spl mu/m were fabricated using e-beam lithography and exercised with an externally applied magnetic field. Data indicate that bit end shaping is ...

Terrence R. Meyer, Robert A. White, The Effects of Cylinder Head Deformation and Asymmetry on Exhaust Valve Thermo-Mechanical Stresses, SAE Transactions, Vol. 107, Section 3: JOURNAL OF ENGINES (1998) ...