[Steve C.]

I posted this in another thread but it might apply here. We monitor the valve springs with a LSM brand on the head valvespring pressure checker, there are other brands but that is a good one.
Just be aware these types type of testers can vary considerably compared to a bench tester like a Rimac machine.

In all instances our LSM checker measures less with installed springs vs the springs tested when new prior to installation with the Rimac tester. It can be as much as 10-20 pounds less !

My suggestion if using this type of spring tester. After the new springs are installed take a reading of their pressure. Use that as a base line. Then later you can check them to see if the have changed.
So for us the on the head spring tester is used only for us to monitor the springs with use over time. I use a solid roller cam set up and we check the valve springs once a year when the lash is checked.


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