07-11-2020, 12:39 PM
You are correct. They don't wear, residing as they do below the bucket and above the stem and spring assembly. They merely get squeezed once every other crank rotation, and they are made of very hard metal.
Enclosed is the MS Excel shim calculator I use, if anyone wants to try it. You enter the measured clearances and the installed shim thickness and it calculates the new shims needed. It's laid out like the valves are in the head so you can keep all the numbers organized.
You can always copy and paste the calculations lower on the page each time you do a service so you have a record of what each valve does over time.
Let's try that again. The spreadsheet previously sent wasn't ready for prime time. This one is.
Enclosed is the MS Excel shim calculator I use, if anyone wants to try it. You enter the measured clearances and the installed shim thickness and it calculates the new shims needed. It's laid out like the valves are in the head so you can keep all the numbers organized.
You can always copy and paste the calculations lower on the page each time you do a service so you have a record of what each valve does over time.
Let's try that again. The spreadsheet previously sent wasn't ready for prime time. This one is.