Lifter testing; Stage III complete
Posted: Fri Jul 23, 2004 8:22 am
In the 3rd session of testing we upped the spring tension once again for another 5 hour test. This time things REALLY happened! We saw significant differences in wear patterns and saw another lifter go from a positive radius on the face of the lifter, to a negative number in just 5 hours!
The OEM lifters are now both flat, all lifters are showing some definite wear and even our Billet Lifters need to be redone after the testing shows us their weak points..
Look closely at the center of the lifters and you will see the wear we are concerned with. All lifters that give problems begin with this wear pattern, as the surface speed is slowest in the center of the lifter. The slower the surface speed of the lifter the MORE wear is concentrated on the center and the more wear it creates..
This is why we test!
The bottom two pics are our oil filter discs, look at the debris they are collecting..
The OEM lifters are now both flat, all lifters are showing some definite wear and even our Billet Lifters need to be redone after the testing shows us their weak points..
Look closely at the center of the lifters and you will see the wear we are concerned with. All lifters that give problems begin with this wear pattern, as the surface speed is slowest in the center of the lifter. The slower the surface speed of the lifter the MORE wear is concentrated on the center and the more wear it creates..
This is why we test!
The bottom two pics are our oil filter discs, look at the debris they are collecting..