No compression-next move?

Post # 50 # 51 mentions that valve spring pressure can pull slightly bent valves back flat against the seats.

What? No way an closed valve with spring pressures in the ***
Ft Lb will pull a bent valve head / stem flat that has steel tensile strength in the xx,*** Ft Lb.
If there is wear in the valve guide, that may allow the stem to **** and the valve head to close. Even then the valve head will not be concentric with the heads valve seat.
Not saying that I would not have them checked, I would get the valves chucked in a rotary spindle then lay an indicator on them. I am saying the reasoning given in posts 50 and 51 is B.S.


You put enough spring load on a valve and it will seal. Absolute fact.

Had a customer bring in his heads for a freshen up. So I pulled a vacuum on them and they were sealed right up.

When I took them apart, every intake was bent so bad you could set the valve on the bench and see the crooked stems. 5 exhaust valves were bent, but not that bad. All sealed up.

I had him pull the short block and bring it in. He was a home assembler. He didn't have the cam times correctly AND he didn't measure piston to valve clearance. And that's what you get.

So you can have a bent valve and have it seal. Seen it so many times I can't count it. So the solvent test, pulling vacuum on the port or using a flash light in the port only tells you it's sealed. Nothing else.