FE solid roller?

[cycleguy55]

Originally Posted by Mark O'Neal

Solid flat tappet cams worked just fine for a hundred years or so.

But no they won't work?

The problem, of course, is that many have had problems with lifter failures or cam lobes being wiped out with flat tappet cams. There could be a number of factors:

1. Modern oils no longer having ZDDP levels that they once had - even if they have other anti-wear additives
2. Materials being used may not be as good as they once were
3. Proper break-in procedures may not be properly followed
4. Any combination or all of the above.

Combine the above with higher lift and spring pressures and the problem is exacerbated.