Are there any benefits in replacing the rear trailing arm bushings to urethane ones? I'm talking about the bushings where the toe adjusters are. I'm about to change all my mounts and bushings and was wondering its worth it to do it.

 

I'm pretty sure someone has done this before.

 

Many people have done this before. However, the benefits of rear trailing arm poly bushings on an RX7 are practically immeasurable with static test and you would be hard pressed to notice a difference in lap times (or the like). Therefore, most of the opinions you will receive will be subjective.

The fact remains; changing them is a pain in the ***. You have to lower the rear sub-frame and in most cases remove the trailing arms so you can press the old bushings out (which requires you to removal of the hub, shock, half shaft, and sway bar mounting points).

Replacing the bushings will tighten up the rear slightly; however, you will still receive a lot of flex from the stock sub-frame bushings.

IMO: unless you race your car and/or plan on upgrading the sub frame bushings, it really isn’t worth the hassle.

The “rear steer” bushings tend to ware out faster, plus they have a more dramatic effect on handling. If your car has around 100k or more and you are looking to make your care more precise and predictable; I would upgrade these first.

Furthermore; I would upgrade your shocks and springs (if you have not already) before you upgrade any bushings.

 

the bushings and mounts are on order. It wont be that bad to change the rear bushings, i have to drop the cross member to change the rear did mount anyways. The toe bushing is already done. The car is my daily driver and ocassional track car. I didnt know the sub frame bushings were that bad. I might just end up changing the rear bushings since i already ordered it. Anyone else?

 

bump

 

You might notice a difference depending on the condition of the rubber that's in there. depending on the year of your car, it's from 12 to 19 years old, and may be non existant by now. If you need to drop the rear anyway, you may as well change everything you can get to now, before it gets worse.

 

I guess i'm going to change it. Maybe i'll take some pic of the press and tool i use to press out the front bushing.

 

I'd like to see the pictures. I had a hell of a time with mine.

 

I got poly bushings front and rear.. yes the car does handle a bit better. *** hurts alot more also from potholes.

 

But that is why you upgraded, so you could react and actually miss the potholes