another broken mount and shifted motor

[boyracer]

after all the talk about motor mount failures I inspected my car. the paint marks on both mounts showed the engine slid slightly. on the drivers side the black painted stand had one ear broken off.
......go check yours out....bob

got to wonder when it happened.

 

[M-Sport fan]

Are these failures happening due to hard, no lift, power 'bang' shifting, or even just from normal, easy shifting, daily driving?

 

[boyracer]

well something in between. after owning the car for two years it still has only 13k on it. mostly just high way miles to Colorado springs twice, and sand hills Nebraska once. brainerd mn few times. however at the springs and at brainerd it was driven with gusto. my daily driver is a work truck. car is lucky to leave the garage once a month.

 

[frankiefiesta]

I should have more filled mounts ready to be shipped by the end of September. Unfortunately they're back ordered right now

 

[CanadianGuy]

Any pictures where they are breaking. Can't see a break on mine but maybe I'm blind.

 

[boyracer]

look at the bolts next to the pass mount and the ones in between the battery. on mine you could see how the paint had a circular ring in the mount. but now you could see that ring meaning the engine slid in the mount.
....if you ever removed a hood from a car and used the paint mark to reinstall it you know what I mean.
....on the pass side one of the ears was broke of the mount. look at anchor mount 3253 on the web and you can guess the rest. sorry I don't do pictures. bob

 

[lonelysuperstar]

well something in between. after owning the car for two years it still has only 13k on it. mostly just high way miles to Colorado springs twice, and sand hills Nebraska once. brainerd mn few times. however at the springs and at brainerd it was driven with gusto. my daily driver is a work truck. car is lucky to leave the garage once a month.

Brainerd, I'm from there

 

[M-Sport fan]

I should have more filled mounts ready to be shipped by the end of September. Unfortunately they're back ordered right now

^^^Is the theory behind this mod that the higher durometer urethane prevents as much violent motion as the factory EPDM (or whatever material they use to fill it with as an isolator) allows, therefore saving the (narrower) eyelet area metal of the mount from shock loading??

Do the various aftermarket RMMs also contribute to these stress cracks on the factory filled mounts due to more energy (torque twisting) being transferred/deflected onto the front mounts during violent shifts?

 

[frankiefiesta]

^^^Is the theory behind this mod that the higher durometer urethane prevents as much violent motion as the factory EPDM (or whatever material they use to fill it with as an isolator) allows, therefore saving the (narrower) eyelet area metal of the mount from shock loading??

Do the various aftermarket RMMs also contribute to these stress cracks on the factory filled mounts due to more energy (torque twisting) being transferred/deflected onto the front mounts during violent shifts?

My brain is fryed right now from putting my coilovers on today in the heat... I'll just link you to my filled mount thread. Read through and watch the before and after videos (videos are on the second post). They reduce engine movement. Same theory as a stiffer RMM.

http://www.fiestastforum.com/forum/threads/9645-Filled-OEM-engine-mounts-group-buy

 

[boyracer]

I believe part of the problem is uneven tightening. either too tight or too loose during assembly. bob

 

[M-Sport fan]

What are the torque specs supposed to be, anyone know/have a shop manual?

 

[boyracer]

drained and pulled expansion tank, removed intake and battery box. just as I suspected. the hold down bolts to the frame were not tight at all just snug. go figure. assembly line mechanics must be under a lot of pressure from management to move numbers. boyracer