Rich,
When I assembled the engine I used modeling clay and did a fully assembled
rotational check & I had more than sufficiant P to V clearance. I really
don't think the damage is a result of P to V clearance.
The rpm limiter comes in much before valve float. So I am at a bit of a loss.
I use good ARP 7/16" studs and high quality rods with hardened instert ends.
But one stud broke without loosening the nut and another nut was almost
completly loose. The bent pushrod was under a rocker that looks like is in
the correct position, in other words the nut is where it should be.
Perhaps, I should check the spring pressure on those cylinders. It could be
that I have some soft springs..........hmmm! It could be that it really is
floating on a couple of cyls at the same time as the limiter goes off.
GH
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