Lower control arms Poly bushings replacement to polyurethane - Page 2 - Mazda3 Forums : The #1 Mazda 3 Forum
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post #11 of 11 (permalink) Old 09-10-2016, 01:58 PM
Moped Rider
 
Join Date: Nov 2009
Location: TX
Posts: 28
Very good information, would think more people would be interested in this since it's a common problem on these cars.
Thanks for posting about your experience and sharing the tips! I'm doing mine this weekend and hope to have a few pics.

Crawled under the car last night with a camera and snapped a few pics of my rotted bushings as a proof of concept.

Passenger was totally shot and drivers side was bad too and clearly on it's way out. Found cracks and separation along the inner portions of both driver and passenger side bushings.
Driver's side has traces of leaking fluid and passenger side was dried out already, any fluid that was there presumably leaked out a long time ago.

Passenger




Driver (note leaking fluid)



Going with the Whiteline W53287 on the rear bushing and W53286 for the fronts along with the Moog ball joints posted.




Theory:
The rear leg of the front control arms on these cars act like thrust arms do on some BMWs. Normally our bushings are hydraulic fluid filled which dampens the road surface but also provides a comfortable ride. Bad bushings allow too much compliance in the suspension which translates into shimmy in the steering. When the fluid leaks out the bushings no longer provide any resistance/dampening. This is amplified for those of us running 17/18 inch rims.

Here is a video that demonstrates what we are seeing (ours is not a severe but same idea).

Last edited by silver08GT; 09-10-2016 at 02:08 PM.
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