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  #1  
Old 03-13-2023, 12:12 PM
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The long term solution is a new subframe, not a large quantity of aftermarket parts that will still be sitting in rusty eccentric holes. Plus, I can pretty much guarantee that you need new subframe bushings anyway.
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  #2  
Old 03-13-2023, 12:27 PM
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Quote:
Originally Posted by nick325xit 5spd View Post
The long term solution is a new subframe, not a large quantity of aftermarket parts that will still be sitting in rusty eccentric holes. Plus, I can pretty much guarantee that you need new subframe bushings anyway.
I’ve rebushed the subframe as it happens - as the main four bushes had all dropped when I bought the car. I also changed all other bushes and arms and bolts….

Really don’t want to drop the whole subframe out - partly as it’ll easily take me two weekends (with family and work duties), and don’t want to be without the car for two to three weeks. A new subframe is over a grand…(someone is selling a ropey one for £750 on ebay….). Hence why I’m looking for another solution. Welding tabs might be a runner - assuming they won’t just ping off - and if I can get someone prepared to weld it….

Interested to see if anyone else has had to deal with this?
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Old 03-13-2023, 12:31 PM
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Question

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Originally Posted by svvg View Post
I’ve rebushed the subframe as it happens - as the main four bushes had all dropped when I bought the car. I also changed all other bushes and arms and bolts….

Really don’t want to drop the whole subframe out - partly as it’ll easily take me two weekends (with family and work duties), and don’t want to be without the car for two to three weeks. A new subframe is over a grand…(someone is selling a ropey one for £750 on ebay….). Hence why I’m looking for another solution. Welding tabs might be a runner - assuming they won’t just ping off - and if I can get someone prepared to weld it….

Interested to see if anyone else has had to deal with this?
Here's the thing: The subframe is slotted whether you install the aftermarket arms or not. You are depending on bolt torque to hold the arms in place regardless of whether the arms themselves are adjustable. If you don't trust the subframe, it doesn't matter what you install there.

Now, that said, the dimples are really just there to make adjustment easier. They are NOT load bearing. If your shop was able to align the car with the dimples gone, this is no less secure than if the dimples were actually there.
__________________
2011 M3
2006 Sierra 2500HD 4WD LBZ/Allison
2004 X5 3.0i 6MT
1995 M3 S50B32
1990 325is
1989 M3 S54B32

Hers:
1989 325iX
1996 911 Turbo


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  #4  
Old 03-13-2023, 01:15 PM
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Quote:
Originally Posted by nick325xit 5spd View Post
Here's the thing: The subframe is slotted whether you install the aftermarket arms or not. You are depending on bolt torque to hold the arms in place regardless of whether the arms themselves are adjustable. If you don't trust the subframe, it doesn't matter what you install there.

Now, that said, the dimples are really just there to make adjustment easier. They are NOT load bearing. If your shop was able to align the car with the dimples gone, this is no less secure than if the dimples were actually there.
Ah that’s interesting about them not being load bearing. They are probably quite strong as they are pressed and hence are part of the subframe, rather than being welded on (I’d think welded on tabs much more likely to snap off… hence possible concern regarding welding on replacements.). But perhaps it’s actually ok if done up VERY tight…
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  #5  
Old 03-13-2023, 01:20 PM
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Originally Posted by svvg View Post
Ah that’s interesting about them not being load bearing. They are probably quite strong as they are pressed and hence are part of the subframe, rather than being welded on (I’d think welded on tabs much more likely to snap off… hence possible concern regarding welding on replacements.). But perhaps it’s actually ok if done up VERY tight…
If the bolts aren't torqued correctly, the eccentrics will spin free and the control arm will swing from end to end in the slot. They don't need to be any tighter than the standard spec.
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2011 M3
2006 Sierra 2500HD 4WD LBZ/Allison
2004 X5 3.0i 6MT
1995 M3 S50B32
1990 325is
1989 M3 S54B32

Hers:
1989 325iX
1996 911 Turbo


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