Should I rebuild this head??

[Dave M]

You can check relative condition of guides by rotating cam to open valves and check movement at valve head when you push valve head. You can check valve seat for leakage by rotating cam so valves are closed and filling combustion chamber with very thin oil. like WD40 and check for leakage at intake & exhaust ports.

How bad was oil consumption with old engine?

Paul Shovestul

Thanks for both your input.

I was hoping there were ways to diagnose without too much trouble, and, now that you've said it, I do recall the valve seat leakage test. However, bentleys does state that camshafts should be removed, maybe so all the valves can be seated via gravity simultaneously.

As for testing the health of the guides, I found the following in benltleys.

But...... since i don't have one of these (below), and it requires that the stems be extended flush wit the end of the guide, is there any way to tell without dis-assembly?



I have spoken with a local 'head shop' and he's willing to look at mine tomorrow. I will come prepared with bentley and any other wisdom you guys can afford.

Thanks again,

Dave M