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DIY: Improve AV6 Motor Mounts

88K views 160 replies 87 participants last post by  accord07white 
#1 · (Edited)
Hard launches with FWD vehicles using performance tires and upgraded power often stress both motor and transmission mounts which cause the drivetrain movements resulting in wheelhop, loss of traction and yes loss of power.

This is a solution to take your OEM motor/tranny mounts to the next level and it only cost $5 + your labor. The benefit of this design is additional strength despite it's flexibility, thanks to a polyurethane.

Keep in mind this method won't deliver the same results as solid polyurethane inserts or complete custom mounts, however it's definitely better than your stock units even if you have a brand new set.

The stock mounts have gaps which allow the center of the mount to move up and down excessively, so by using polyurethane you can fill those gaps to restore worn out mounts, reduce unwanted motor assembly movement and deliver more power to the ground.



Premixed polyurethane can be purchased at Menards or Home Depot for $5 a tube (I chose Menards due to available black color). This sealant designed for different purpose of course :D, however it works with metal and rubber, so that's all we need. In addition, it withstands any weather condition and high temperature. And 1 tube is enough to fill 2 tranny and 3 motor mounts (front, side, rear).




All engine/tranny mounts should be removed prior to use the polyurethane and if unable you can lift the engine and fill them up that way (not much convenient but it works). This source is not a liquid (more like tooth paste) so no duct tape necessary to cover the other end, just use a cardboard underneath when you fill them up. Place all mounts outside and let them sit on the sun for 8 hours or so each day to harden the solution faster. You can start using mounts after 24-30 hours.

Enjoy!
 
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