[Gmirza]

Originally Posted by Bruce Fulper

Yes, Lifter failure prevention....
Does anyone know or can someone find out what the hyd flat tappet lifter hardness should be so we can test them first? I have a hardness tester. Most engine shops do. I've got to find this out and soon. Not worried about making a small mark on the side of the lifter close to the bottom when testing. Easy to smooth out.

To get an accurate hardness it’s best to test on a ground flat surface. If you test on the radius or side of the lifter there is a correction factor you need to use. It’s usually in the directions for the tester.