100% brand new, Never used or installed.
Made of high quality Aluminum with black finish, great strengh and light weight , anti-corrosion , durable to use and no deformation.
Quickest, easiest, most accurate way to measure valve spring installed height.
Install just like a spring, then is expanded until it fully seats valve, locks and retainer.
Simulated installation allows ultra precise readings.
Tool is read like a micrometer and is accurate to.001 in.
Range - 1.600 to 2.200 in.
Professional installation in highly recommended.
No instruction included.
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 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 valve spring tester and check
valve spring load at that height.
Important Note:
Since the retainer is installed in the spring when checking the spring loads,
make certain that the thickness of the retainer is not included when
calculating the installed height and is accounted for when compressing the
spring. The spring load checker will show to be higher with the spring
installed at the correct height.
Package including:
1 Height Micrometer
Same as picture show
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