Solid Lifter Valve Adjustment Spreadsheet

highmiles · Post by **highmiles** » 01 May 2019, 09:50

Jimmy's post is the one that I cribbed the methodology from, just made it a bit more automated. I did confirm the clearance tolerances with another source.
Great ideas on the spreadsheet development! The hardest part will still be reading the size on the bottom of the tappet, seems what ever they are marked with at the factory likes to come off with the same chemicals necessary to clean them enough to see it! I am sure a micrometer would be the answer here.

Post by **RickHaleParker** » 01 May 2019, 13:43

highmiles wrote: 01 May 2019, 09:50 The hardest part will still be reading the size on the bottom of the tappet, seems what ever they are marked with at the factory likes to come off with the same chemicals necessary to clean them enough to see it! I am sure a micrometer would be the answer here.

This is my theory never done it this way:

In order to null the effects of thermal expansion and systematic measurement error.
1. Measure a known reference tappet.
2. Measure the bucket tappet.
3. Calculate the difference.
4. Sum the difference with the known reference tappet.
5. The sum is the size of the bucket tappet.

This would be easy to test with two known reference tappets.
If you keep records you should have 20 known reference tappets.

If you do this with your 20 tappets and the calculated values are in agreement with the known values. You would accomplish three thing, Prove the theory, verify that the 20 tappets are still good and reusable with the stamped values and have an educational experience.