Who makes/sells the best adjustable tappets?

[BRENT in 10-uh-C]

Originally Posted by Dave in MN

I run into the same situation you are describing a few times each year. The very simple solution is to shorten the valve stems. Shorten them all to the minimum shortest length you need, in other words, don't shorten them more than you need to but keep them all the same length for ease of assembly.
Engine rebuilding shops will have the necessary equipment. The cut edge needs to be precise so don't try to grind them with your bench grinder.

I have a Sunnen machine in my shop....

Good Day!

This is very true since the valve must be supported in a conical taper on the aft end and supported near the head when it is trued in a valve grinder. If the valve stem is not correctly ground, this will cause the concentricity of the valve to be lost when the valve is installed into the guide.