Motor Mount Replacement...

[jared6180]

Hi, brand new here, and I was wondering how hard it was to replace a motor mount an a 420A car? Car is the girlfriends, and when she accelerates the motor jumps around like popcorn. Any help would be GREATLY appreciated!

 

[JayRolla]

What do you want to do. You can go to a junkyard find some good ones and just swap them out. Buy a shop book like chilton, they help out a lot for basic stuff like this. Or you can buy some prothane mounts that will last forever. You need to take them out and use a sawzall to cut the rubber out. There is a little metal ring on the inside of the mount, just cut through this and the mount will pop out. Dont be afraid to cut into the mount a little just dont cut all the way through of course.

 

[DSMcrazy3]

First off, let us know which mount it is you want to replace...That way we can give you a more descriptive answer as to how difficult it is.

There are 4 total and none of them are really that difficult.

What do you want to do. You can go to a junkyard find some good ones and just swap them out. Buy a shop book like chilton, they help out a lot for basic stuff like this. Or you can buy some prothane mounts that will last forever. You need to take them out and use a sawzall to cut the rubber out. There is a little metal ring on the inside of the mount, just cut through this and the mount will pop out. Dont be afraid to cut into the mount a little just dont cut all the way through of course.

This isn't really the best advice.. There is no telling how long the cars have been sitting out in the sun at a junkyard, or how much wear has been on the motor mounts on them. Best thing to do really is to just buy a brand new one.

 

[VelocitàPaola]

This isn't really the best advice.. There is no telling how long the cars have been sitting out in the sun at a junkyard, or how much wear has been on the motor mounts on them. Best thing to do really is to just buy a brand new one.

True.

I've tried scavenging parts like these off of junkyard cars before, and I've never been successful. The symptoms I was having before always end up recurring or being worse after I swap the junkyard parts in there.

Either buy new OE mounts, aftermarket mounts, or inserts of some type. In all cases, you'll just need to jack the engine up a little so as to take off any pressure on the mount. You can then unbolt it from the chassis and the engine and get to work. Depending on which route you take, the replacement itself varies. For instance, inserts, like their name suggests, just require you to insert them into the holes in the stock mounts. Replacements will require you to press the old ones out and the new ones out. A shop press is almost a necessity for this.

 

[JayRolla]

Yea you guys are right, you can sometimes find good mounts at junk yards. I would buy new prothane ones. I went to a friends shop and had so many problems trying to press the mounts out. Much easier to cut them out believe me. You can blow torch the rubber out and cut the metal ring or drill a hole in the rubber and cut it.

 

[Red Man]

I had the same problem, the junk yard is no good, and be careful on the prothane mounts, i put them in and my car shakes, so buy the OEM, its the safest and smoothest bet.

 

[VelocitàPaola]

I had the same problem, the junk yard is no good, and be careful on the prothane mounts, i put them in and my car shakes, so buy the OEM, its the safest and smoothest bet.

The shaking is just one of the trade-offs you have to accept when buying Prothanes. They're much stiffer than the OEM ones, which allows for much better power transfer. Consequently, this also transfers more vibration to the chassis.

 

[JayRolla]

I had the same problem, the junk yard is no good, and be careful on the prothane mounts, i put them in and my car shakes, so buy the OEM, its the safest and smoothest bet.

If you have a fwd like your GST you especially want to use prothanes. Helps a whole bunch on wheel hop.

 

[turbo98eclipse]

not hijacking...but i got one of my mounts replaced today...i need to get another one fixed tomorrow (the one on the driverside engine bay right next to the timing belt) how important is it to get this one fixed? is it VITAL? as in it will cause massive damage after some time? or will i be cool leaving it for now? thanx guys

 

[Linkizunlistd]

Hey guys I am replacing my front motor mount next to timing belt on my 97 gst. Can you help me out here with the step by step? I cant seem to find it anywhere on here or in my chilton.
So jack up the engine using a 2x4 as a cushion under the oil pan just a tiny bit to relieve pressure on bolts? Then start removing them? Next?
Help is appreciated greatly.

Link.