Re: LSM valve spring tester
 

Jesse,yes this is a small block chevrolet using Jesel shaft rockers.After checking my bracket engine this morning I went back to the superstock engine and tried again to use the removal tool.I did manage to make it work and removed four springs total.Then using my Rimic bench tester I compared readings and found quite a difference,with the bench tester being lower but more consistant.The four I tested were between 305psi and 310psi with the bench tester and between 350psi and 270psi with the LSM.I will say the lower reading ones were on cyl #7 which is the hardest to get a nice straight pull on.I also tried to calibrate the LSM as the instructions state,but it really didn't change much.While I had the springs off I experimented with shims and found .030"shim changed psi by 15psi.At this point I think I will compare my bench tester with another to make sure those readings are correct.Still doesn't explain the low readings with the LSM.Thanks again for your assistance.

Re: LSM valve spring tester
 

I would try the Moroso tool again and compare readings. It's good to have the bench tester.