Cylinder Head Article About Valve Seat Cutting

So call this a fresh thread for all of the opinions on what/ who's Valve equipment is good to use.
Read this article on the net, by a Master of the Art.

www.enginebuildermag.com/Article/16025/t...o_with_the_flow.aspx

And then some basic porting info from same.

www.enginebuildermag.com/Article/2477/ho...wer_and_profits.aspx

Some of you may find some interesting reading here.

Also keep in mind that a Stone will change as it contacts the seat, especially a hardened seat. The carbide cutters will not change except after many uses, they will dull. Stones must be redressed constantly, and may remove more material than you need. This can lead to complications of Installed Valve Height.
There should be many opinions on this so I started a fresh un-hijacked thread.

One of the main things is in understanding what's happening to cause a seat to be crooked and what it takes to fix it.

If you use a stone, use a bounce spring with it.

No matter how expensive your valve seat cutting tools are, they are of no value if you don't fully understand what's happening when you make a cut and things don't come out like you thought they would.

Don't expect a good valve job from expandable pilots.

Understand that a worn out or bent guide will cause you grief. Good guides are the foundation for all valve jobs.

The valves themselves might not have a straight face on them to begin with. I've had to reface brand new valves from time to time.

After the seat cut is made, drop a new or refaced valve in the guide and listen to the sound it makes. A good seating valve will have a distinct sound to it.

Let the valve rest on the seat and tap on it with your finger. If it clicks, it's not seating. Turn it 90 degrees and tap it again. If it stocks clicking when you tap on it, the face is likely not straight.

It's possible to cut the 45 so deep that the valve doesn't seat :ohmy:

When that happens, the valve is touching on the bottom of the margin. A top cut can fix that problem.

Those are some of the obstacles you can and probably will come up against when you have a go at it..

Getting the concepts understood is one thing. Putting them to practical use is quite another. GET A JUNK HEAD TO PRACTICE ON...


Larry C