Features:

Application

Used to measure installed valve spring height conveniently and accurately for most V8s. With 1.600'' - 2.100'' range.

Easy to use

nstall our 4929 Height Mic just like you would a valve spring, then expand the tool until it has seated the valve, locks, and retainer.

Precise design

This simulated seat pressure allows ultra-precise readings. It can measure 1.600 in-2.200 in installed height. The tool is then read like a micrometer and is accurate to 0.001".

High quality

Made of high-quality aluminum alloy with black finish, great strength, and lightweight

Descriptions:

Using Instruction

Before installing the spring on the cylinder heads, check the installed spring height?

1. Install 1 intake and 1 exhaust valve.

2. Get the correct retainer for the spring and correct locks for the retainer.

Pull the retainer tightly against the valve locks while holding the valve assembly steady.

3. Place a 4929 height micrometer or a snap gauge and a pair of calipers on the valve

between the spring seat and the outside step of the retainer and turn the height micrometer counterclockwise to establish valve spring height.

After you have measured all the valves, find the shortest height.

This will become the spring’s installed height on your heads.

4. Add shims until proper height is obtained on the remaining valves.

5. Take the height micrometer and retainer to the valve spring tester and check the valve spring load at that height.

Package included

• 1X micrometer