Why has no one mentioned the Alta PSRS as a better alternative?

 

but it's only available with the offset, so if you don't want the increased caster, it's a non starter....

Matt

 

Has anyone used the superflex version on their car?
Any thoughts.

 

I imagine that superflex and Powerflex work the same way.

I cannot say the bushing material is the same...the superflex appears to be harder to install since it must be precisely pressed into the braket bore. The powerflex outer bushing doesn't require a press but using one will make the install easier. The Powerflex outer bushing is formed with two lips and each catch the outside of the braket bore making locating this bushing in the boring a no-brainer.

Of course, if you have experience pressing bushings and have the equipment pressing in the superflex bushing is also a no brainer.

Just a general cautionary note...typically any bore that has a press bushing in it is tappered. So you must identify the ever so slightly wider end, press the bushing out toward the wider end and press the new one in from the wider end.

 

...And most feedback I've found sez that (due to their "solid" nature) they contribute greatly to NVH, especially on DD's on the northeast's less than pristine roads; better left to track only or 'occasional' street use...

 

Not on my car, and it only adds .75 degrees of added caster. Club members have had them installed for over 2 yrs with no complaints. You do get a bit more NVH at slow speeds (just like new engine mount bushings) but nothing you don't get used to.

 

I've used the motorsport kit part, and don't think it does much. Plus it's kind of a pain to install.

 

I also never installed it...a number of track events and perhaps 120,000 miles of aggressive driving on these...no problems.

I do remember one fellow who had a problem, but I think he installed the backward...once they were installed correctly they worked fine.

 

I'll went in for an alignment earlier this week and my front end wouldn't hold a steady alignment... torn LCA bushings after 50k miles and 4-5 track weekends.

I'll try and shoot some video w/ my FLIP camera of the stock bushing (torn) movement and the powerflex replacements that I'll be mounting.

 

PS: While I've got the subframe down, should I replace the ball joints? I have no reason to suspect that they are bad, but I'm already doing all the labor and having the alignment re-done afterwards... why not?

 

Unless there is play in the inner ball joints I wouldn't worry about it. I don't see many worn out.

 

Well, I forgot my camera and I wound up not even having to drop the subframe all the way as planned (per the Haynes manual)... so, needless to say that I didn't run the test as planned. Once I got the new Powerflex busihings in, I worked the joint similarly and got more motion than what is seen in the video. It definately wasn't as free as the orginal bushing, but it was fairly well fried.