A couple of years ago I swapped out my old rubber bushings for energy suspension poly bushings in the upper and lower control arms. I lubed them up real good with the ultra-tackified, presumably silicone-based ES grease, but after some miles and drips through the dirt, alas, they have started squeaking.

I would like to solve this problem by cutting grease paths into the bushings (if they don't already have them) and tapping the arms for grease fittings. That way I can freshen up the grease whenever.

What I'm wondering is, for the Toyota IFS, is the outer or inner diameter of the bushing intended to slip? That is, does the arm+bushing slip on the inner shaft (bolted to the frame) or does the arm slip on the shaft+bushing? My gut tells me its the ID, since there would be less torque resisting the movement.

I am interested to hear ya'll's input/ideas on this.

 

I vote ID. It just makes more sense to me. After replacing my lower control arm a couple months ago, I got an up close look at the bushings. They clearly weren't moving inside the arm itself, rather on the sleeve over the eccentric bolts.

 

Thanks! That's exactly what I'm after.

 

I'd like to see how you do this. I'm debating on putting poly bushing in the UCA to help increase articulation. I've heard the stock rubber bushings just twist the rubber and don't 'float' on the cross shaft the way the poly ones do. I don't think the TB need any help in restricting movement at low speeds!