Reply to "MME ENGINE FAILURE UPDATE"

Interesting.

They way I read it it says 1)normally this kind of failure is only found in coil bind situations. There was no coil bind found.

2)It could have been caused by the adjuster nut being held on by only 1-1/2 threads. That was because the push rods were too long.

3) More likely it occurred because the pushrods were flexing because they weren't strong enough for the spring pressure.

4)The spring pressures may have been excessive or the cam profile too radical for the springs to maintain proper control of the valve train.

5)the rocker arms may have failed because the pushrods "flexed" enough for them to come out of their guides, the rocker arms then were uncontrolled and crashed on something or each other, bound and broke.

In my experience the pushrods are the fuseable link, i.e., they bend or brake first. That is what you want to keep the valve stems from the part that needs to fail. Therefore they probably aren't a mismatch at all. They didn't break. They are the super hardened ones and don't bend at all. When they fail the tips usually shatter. Ask me how I know that one.

Bottom line conclusion, the cam is PROBABLY too radical for DEPENDABLE street use, spring pressures PROBABLY too high for longevity BUT no one can prove it.

Culpret? ...drum roll here...who picked the cam? Great suspense but a predictable ending.

Incidentally I am sorry for your grief, expense and heartache. It's a lousy situation. I'm not picking on anyone or making fun of anyone. Live and learn I guess? I still am.