The tractor of “don’t”

We after getting into the engine, I am seeing many of the “don’ts” that another repairman put in.  Wrong rod nuts, sleeves not  cleaned, wrong head bolts, and so much more.

One very common mistake I see is machinists wanting to put umbrella seals on the valvestems:

The Allis Engines DO NOT USE THEM.  Please don’t add them thinking that they will control oil consumption.  If you are using oil this will only make the stems run  dry and wear faster.


Here’s a photo of why leaving exhaust open/uncovered in rain is bad.  Water collects on the valves, and here is the result: