"explain this dual mode damper a little more for me?"
OK here is the deal (as I understand it - Terry or Judge can correct me if I screw it up). The Duratec is prone to "crank whip" related to harmonic frequencies at certain RPMs). This crank whip is tough on rod bearings which causes premature failure in some cases "spun bearing" = broken rod. This is why some racers have used the SHO trimetal bearings. In fact, this MAY be the major reason for Duratec failures and be falsely blamed on oil starvation (though starvation is probably a problem in some cases /situation). But beyond the SHO bearings, an easier solution exists (though the trimetal bearings may be a better solution - they cost $600 + an engine teardown). The Ford OEM damper supplier found that the stock damper was not dampening the harmonics well enough and developed a "dual mode" damper that works much better at eliminating undesireable harmonics = less crank whip = no more spun bearings(?). Ford has changed (as of about summer 2001 production date) to the new damper on the new 2002 Mondeo and probably 2002 Cougars. It is a direct bolt on and currently a member of CEG has one and is testing it out. So far, I have no part number and not sure when they will be available. Cost about $75 or so.
As harmonics are probably more of an issue with higher RPMs, it seems to me the dual mode would be a must for all with elevated redlines. Actually, I think everbody should consider this damper when readily available. Group buy! Group buy! Hint, hint..
