Contour Enthusiasts Group Archives Forums Modifications Duratec Maintenance What's a DMD?

I've done a search but all I have come up with is the abbreviation. So what exactly is a DMD and what does it do?

less crank whip and reduces vibrations.

this is what I got for a reply...still wondering if its worth the switch out..

I believe it's only applicable for the V6. From what I've heard, it can help your engine last longer by reducing crank whip. I was in on the group by that the guy was putting together recently, but the deal fell through. I think they can take a while to get.

Click here for more info.

Dual Mode Dampener (DMD)

Replaces the stock crank pulley dampener. It's characteristics prove to be excellent insurance against spun bearings. This part is as useful as the Duratec metal impellar water pump in helping assure the life of your engine compared to stock.

so it only works on the v6 Duratec and not the 4 zetec?

A DMD has become an OEM component on the latest 2.5 Duratec Mondeo engines. It reduces vibrations in 2 frequency ranges which are known to be destructive to the crankshaft. The "dual mode" part is derived from the second ring which is depressed on to the front of the original OEM damper to help dampening in a second frequency range. This helps eliminate destructive vibrations over 3000 RPM.

The DMD reduces the possibility of a vibration induced engine failure and lessens the effects of crank whip which can extend bearing life and theoretically reduce bearing related oil failure problems.

Another advantage of the DMD is that the engine feels smoother and more refined. It is especially noticeable above 4000 RPM. Another theoretical advantage is that by reducing vibrations and crank flex you reduce the parasitic loss from such actions and therefore lose less power to it.

DMD- Damn Midget Doors

Originally posted by DemonSVT:

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A DMD has become an OEM component on the latest 2.5 Duratec Mondeo engines. It reduces vibrations in 2 frequency ranges which are known to be destructive to the crankshaft. The "dual mode" part is derived from the second ring which is depressed on to the front of the original OEM damper to help dampening in a second frequency range. This helps eliminate destructive vibrations over 3000 RPM.

The DMD reduces the possibility of a vibration induced engine failure and lessens the effects of crank whip which can extend bearing life and theoretically reduce bearing related oil failure problems.

Another advantage of the DMD is that the engine feels smoother and more refined. It is especially noticeable above 4000 RPM. Another theoretical advantage is that by reducing vibrations and crank flex you reduce the parasitic loss from such actions and therefore lose less power to it.

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Nice write-up Demon, I'm sold. Anything to prolong the life of my SVT!

do the zetecs have that crap water pump too?

I'm at 101K miles and my water pump hasn't blown up yet...