kaj

iTrader: (60)

bumping for updates. Opinions? I may be looking to get rid of my PSRS ( I don't think a wider/*possibly* taller tire will fit with it) and going to a different bushing. I'm not really sure if I need any offset, but the DuraBall looks to have quite a bit less than my PSRS, but maybe enough to end up trimming bumper vs sideskirt.
I'd like to run a 275+ tire.. as much as I can fit on an 11" wheel. Things are getting pretty tight up front, is all I'm saying LOL.

CaptainSquirts

iTrader: (3)

Had mine on for at least a year. Went from the oem bushing to the super pro one so I couldn't tell you any difference compared to other offset bushings. No complaints.

Dallas J

iTrader: (1)

Easy enough to move the wheel back with an offset top hat. I think I recall someone using my Ohlin offset hats on the FAs but would have to double check your spacing if you wanted to go that route.

kaj

iTrader: (60)

I have Vorshlag plates. They didn't help as much as I'd like.

Dallas J

iTrader: (1)

IIRC, the Vorshlag plates were only offset 10mm? Or was it 15mm? Mine are 20mm, so if those are 10mm these would about double the move.

kaj

iTrader: (60)

That would be awesome! If I'm at 7-7.5° caster now, another 10mm up top would be like

CaptainSquirts

iTrader: (3)

That's me, I use them on my FA 510's. They work great!

kyoo

iTrader: (29)

just a bump on this - the design has been updated. the holes that were present before (that kind of looked like bubbles) are no longer being filled. they say it transfers less road noise, without any impact on deflection or performance

SoSoEVO

iTrader: (5)

I can confirm this, my SuperPro Duroball kit also had holes in them.

carlos franc

Is the picture of the instructions the correct way they’re supposed to be installed or only recommended?

CaptainSquirts

iTrader: (3)

So I went to install new bushings on the front control arm, the smaller front bushings. Upon taking the control arm off I noticed the Duroball bushing seems to have some sort of separation issue going on and start to crack as well.

Ayoustin

iTrader: (2)

If you'd like something more robust there are the Powerflex adjustable bushings. They don't use any poly in them.

https://www.wunderladenracing.com/co...41578440327361

kyoo

iTrader: (29)

how old are they? mine are still in the car but i got the revised version that has holes in it (post 143 in this thread)

CaptainSquirts

iTrader: (3)

Since I'm running STU class I don't think I can get any that are all metal, so I would have to go poly route still. I did notice Whiteline has a poly version of there "caster correction" bushings. I did ask them the difference between the two and there "caster correction" one is all metal and the one I linked is poly.

https://stmtuned.com/products/kca469-evo-ct9a-front-control-arm-lower-inner-rear-bushings

CaptainSquirts

iTrader: (3)

I've had them installed I think around mid to late 2018, around 20kish miles with a nice bit of autocrossing. I did contact superpro and their revised version compared to mine and they said the following...

"It is effectively the same – yours has those holes as well, they’re simply filled in by a small ‘pour’ of 90A polyurethane – in the first of your two photos that is the piece that is separating – you could simply grab it and with a bit of force likely pull it out of the holes.
The holes themselves are there to take up any shrinkage during the curation process in the final bushing assembly. Initially these were then ‘filled’ by that small pour of additional poly. Initially tested to see if the assembly benefitted in anyway from filling those holes (it did not) it ended up being retained as the team apparently felt it made the assembly look better. At some stage they reversed course on that as it let us remove an unnecessary step from production that had no bearing on the performance of the finished product."

So the revised one may run into the same problem of the poly itself cracking. The part that separating from what it sounds like doesn't affect anything.

Am noting even though the warranty has expired on the bushing, SuperPro offered 50% off of the bushing if I wanted a replacement.

So the Whiteline and Superpro would be about the same price. I asked whiteline about it and they said the duro rating was 72. So Super pro is stiffer, which I don't mind, but which more durable is the question.