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**HTPerformance** · 06-24-2008, 02:42 PM

We have the CFM lower mount in stock. PM me for pricing.

I believe the MSS "Unbreakable" is the revised OEM Ford unit that comes on the Duratec vehicles with new polyurethane bushings.

The biggest issue with replacing one of the bushings (out of the three mounts) is that you induce other harmonics in the engine movement that were not originally there since the durometer of the 3 mounts rubber was the same. When you replace only the lower mount there is additional movement that has to be accounted for by the upper mounts and this accounts for the failures of either the upper mounts or the replacement lower mount.

If you are going to replace the lower mount, I would recommend getting all three mounts, otherwise you will be replacing the others in due time, or replacing the upgraded mount.

Keep the durometer of the polymers the same among all three motor mounts.

Some people will complain about excess vibration with all three mounts; however, this can be tuned out by adjusting the motor position in the engine bay.

We carry the CFM and the Steeda units. We also have used OEM replacements if you are in need.

Cheers,
Brian

06-24-2008, 02:42 PM	#15
HTPerformance TEAM Sponsor Join Date: Apr 2005 Location: Boston, MA Posts: 1,474	Re: Lower Tranny Mount Diagram We have the CFM lower mount in stock. PM me for pricing. I believe the MSS "Unbreakable" is the revised OEM Ford unit that comes on the Duratec vehicles with new polyurethane bushings. The biggest issue with replacing one of the bushings (out of the three mounts) is that you induce other harmonics in the engine movement that were not originally there since the durometer of the 3 mounts rubber was the same. When you replace only the lower mount there is additional movement that has to be accounted for by the upper mounts and this accounts for the failures of either the upper mounts or the replacement lower mount. If you are going to replace the lower mount, I would recommend getting all three mounts, otherwise you will be replacing the others in due time, or replacing the upgraded mount. Keep the durometer of the polymers the same among all three motor mounts. Some people will complain about excess vibration with all three mounts; however, this can be tuned out by adjusting the motor position in the engine bay. We carry the CFM and the Steeda units. We also have used OEM replacements if you are in need. Cheers, Brian __________________ *"Enabling you the opportunity to build your DREAM. We take ideas and turn them into reality."* BUY IT NOW! HTP Adjustable Rear Toe Arms - ORDER YOUR SET NOW! Zetec MAF Sensor Tubes now in stock! Duratec on the way!