VinceBar and Skinz - while I am there...

[Obioban]

so the 75A is the softest poly fcab AKG has to offer (to my knowledge).

I will say the front is slightly too stiff for my liking, but I’m pretty sure a majority of that comes from the setting on my KWs. Overall I’ve been pleased with the FCABs, will take a look at them once the ohlins are good to go in.

Poly FCABs all end the same way— failure.

[enjoy_m3]

while you're there, remove seam sealer along the trunk side and back seat near the wheel wells and on the rear wheel wells along the seam. That's where spot welds fail even if you can't see it. Drilll and fill weld, stitch weld if you prefer better rigidity.

[AussieE46M3]

In addition to the non-sealed joint (although it looks like they offer a boot), they are going to be more difficult to adjust than the bars with the adjustment on the outboard ends (Turner, Ground Control, etc).

Camber adjustment is made between the round bar and the clevis (at the wheel end) using a stainless steel jack screw.

The rod end is tucked into the subframe and not exposed to much road grime at all however, the boots are available to seal the bearing just like an OEM ball joint.

For those with non-raising bushings and are running quite low these arms offer positive adjustment beyond stock arms as well as negative adjustment well beyond stock to.

[K-Dawg]

Camber adjustment is made between the round bar and the clevis (at the wheel end) using a stainless steel jack screw.

Ah, got it. I saw the hex on the inboard end and thought it was a lock nut. I'll edit my response. 👍

[90mtx]

Another maintenance item is the e brake cables. A bit easier with the subframe dropped. SuperPro makes an offset upper inner control arm bushing that you can correct/add/adjust about 1 deg of rear camber.

Jonathan

[D-O]

Another maintenance item is the e brake cables. A bit easier with the subframe dropped. SuperPro makes an offset upper inner control arm bushing that you can correct/add/adjust about 1 deg of rear camber.

Jonathan

E brake cables - good thinking. Thanks.

Jesse

[D-O]

Is an OEM rubber bushing the way to go on the inner end of the upper rear control arm?

Jesse

[AussieE46M3]

Is an OEM rubber bushing the way to go on the inner end of the upper rear control arm?

Jesse

Yep. There's bearing options however, they are about x10 the price and yield not hugely significant gains. It's a small bush so I'd be surprised if poly would make any difference but, does runthe risk of squeaking.

The upper control arm experiences about half the force the lower arm does so removing rubber in favour of bearing/ball joints on the lower arm will yield more gains in terms of geometry consistency.

[jet_dogg]

Yep. There's bearing options however, they are about x10 the price and yield not hugely significant gains. It's a small bush so I'd be surprised if poly would make any difference but, does runthe risk of squeaking.

The upper control arm experiences about half the force the lower arm does so removing rubber in favour of bearing/ball joints on the lower arm will yield more gains in terms of geometry consistency.

What bearing options are there for that one, that's the only one I've not seen readily as most shops say don't bother.

[D-O]

What bearing options are there for that one, that's the only one I've not seen readily as most shops say don't bother.

Turner offers them.

[jet_dogg]

I should have specified I don't want any turner, vac or bimmerworld stuff.

[AussieE46M3]

I should have specified I don't want any turner, vac or bimmerworld stuff.

My advice to everyone bar a 10/10th's track car is don't bother either. They all use spherical bearings that are fairly small to fit within a housing within the arm so they will be a service item.

As I said above, go for a bearing mounted lower arm. You'll yield more than double the gains to an upper inner bearing as the lower arm experiences double the force and has a larger rubber bush that has more room for flex.

It's the only piece of rubber I suggest leaving in the rear suspension.

[WestBankM4]

Too late for my build, I went with Turner Rear Camber Arms, when I get under there I suppose I'll realize how much of a pain they are.

[jet_dogg]

Too late for my build, I went with Turner Rear Camber Arms, when I get under there I suppose I'll realize how much of a pain they are.

He's saying go with what you went with, wording is a bit confusing how you read it. I got spherical bearing lower arms I will be installing zero fucks about dirt since I won't be driving in the rain.

[D-O]

How about the pinion and diff output seals? The output seals were replaced by the PO in 2015. None of them are leaking now.

Jesse