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Old 06-10-2014, 10:38 AM   #1
Hurricane240
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Front Sway Bar End Links

So,

When I got the E30 the through bolts for the front sway bar endlink were seized and I broke them.

Since then I have been an on endless hunt for two bolts that PROPERLY fit into the endlink.

They are listed as M8x45, well I've tried every M8 bolt I can find and none of them have that nice tight fit an OEM bolt has.

The stealership doesn't sell them any more either.

Big deal you say, its just a bolt, use another. Normally I might agree, but in this case, any slop in the endlink through bolt cause a.. *click, click**click pop* everytime you load and unload the sway bar while driving.

And I can't take it anymore! It sounds/feels more like Archie's jalopy then an E30.

So I have two solutions, one is pretty obvious spherical links from AGK

http://www.akgmotorsport.com/catalog...ion%2FBushings

I've read on a few forums that spherical end links will add harshness to the ride quality, but I'm not really sure how unless you preload the sway bar with them by accident? Perhaps its just the added road noise of losing the rubber insulator on the bottom of the link? Any thoughts on this??

Also does anybody have experience with these in the winter for durability? The AGK ones specifically.


Or, this new to me solution that I was wondering if anyone has any experience with

http://www.e30zone.net/e30zonewiki/i...Suspension#ARB Drop Links
http://www.ebay.com/itm/Anti-Roll-Ba...f8c8fb&vxp=mtr

It looks like a solid idea to me, that bracket/bolt design on the non-M e30/36 has always bothered me for its noise potential.

Have anyone tried these? Do they work well? Last better then the OEM ones?


Or maybe I'll visit a local junk yard and see if I can get my hands on some OEM bolts...
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Old 06-10-2014, 11:49 AM   #2
cirrusblau
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I can't recall what the bolts look like, were they perhaps some sort of shoulder bolt?

What's the ID of the hole in the link?

And I seem to recall the bolts coming with the OEM fitment links, but can't say with certainty.

The harshness of the spherical end links is because of the rigid connection (no rubber), so you'll get more vibration transmitted to the bar and loads on the bar will occur more suddenly (if you have any weak points, they're more succeptible to failure). There's no possible way you can preload the sway bar unless you've got springs of unequal length or the suspension is otherwise seriously messed up.
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Old 06-10-2014, 12:04 PM   #3
Bullet Ride
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Another option would be to just drill out the bracket and end link for a size larger i.e. 3/8 or 10mm.
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Old 06-10-2014, 12:24 PM   #4
Hurricane240
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I think the issue with the bolt is more that the shoulder doesn't QUITE reach the end of the bracket and therefore it has more play on the one end.

I've ordered new brackets and endlinks, neither came with the bolt/nut.

I've considered drilling them out to M10's, but now I have to drill out my endlinks every time I get a new set. Not too fond of that idea, but I may still try it.
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Old 06-10-2014, 12:29 PM   #5
Bullet Ride
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For what it's worth, I've busted those bolts before too and replaced them with whatever I had lying around and didn't have any issues with clicking or popping.
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Old 06-10-2014, 10:50 PM   #6
cirrusblau
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Ah, okay. It's been a while since I've done the E30 sway bar links. I must have bought the bolts separately then. If I recall correctly, the fork that bolts onto the control arm fit the link quite snugly, so it wouldn't necessarily be a problem for the shoulder not to go through both sides. Know what I mean? That's probably why Bullet_Ride managed fine with a regular bolt.
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