Trouble with Turner Motorsports front sway bar

[timmo]

Stock everything, there is no preload— it’s all sized to match/fit without adjustable end links.

Even without preload, the end link length should be set such that when neutral the end link is perpendicular to the sway bar arm-- so adjustable links are needed for that, as well.

I'm struggling to understand why... can someone explain? It makes sense when you have coilovers where the ride heights are adjustable from side to side. But if you are on non-adjustable front struts, what would cause preload? The only reason I can think of is if the aftermarket sways are crooked so the endlink hardpoints are different side-to-side.

I do agree about trying to keep the endlinks perpendicular to the arc of swing as the bar rotates

[eacmen]

I'm struggling to understand why... can someone explain? It makes sense when you have coilovers where the ride heights are adjustable from side to side. But if you are on non-adjustable front struts, what would cause preload? The only reason I can think of is if the aftermarket sways are crooked so the endlink hardpoints are different side-to-side.

I do agree about trying to keep the endlinks perpendicular to the arc of swing as the bar rotates

There is a difference between a “non adjustable front strut” and a complete oem setup. Just because it is non-adjustable does not mean it matches the OEM geometry.

So assuming OEM strut geometry AND assuming the aftermarket sway end link geometry is the same then the factory end links are fine. But I think what we are seeing here is one of those assumptions is not true (especially for the stiffer settings on the bar).

[mrgizmo04]

Is that bar by chance from Turner's dent and scratch inventory? Almost looks like it's practically deformed and not even on both sides.

As others have said, need shorter endlinks due to the difference in shape/curvature of the arms in stock vs Turner bars and the lower attachment point on the yellow strut.

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[uberchris]

Followup in case other come across this thread...

The problem seems to be the combination of Koni sport shocks and the aftermarket bar. It seems the mount point for the stabilizer link on the Konis is a bit lower than stock. That, combined with the added length of the Turner bar was the problem.

I found a thread on e46fanatics where someone suggested the e36 m3 sway bar links might work. I tried those and they fit perfectly; same 10mm bolt diameter and about 3/4in shorter.

As for the "crookedness", I just got over it. There's a bit of preload, but based on the effort required to get the link in I would guess it's no more than 10-15lbs.

[Tbonem3]

Koni yellows and bilsteins are oe replacement dampers and have the sway bar tab in the exact same spot as well as all use the same lower perch.