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Old 06-21-2020, 04:50 PM   #43
Badmojo
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Second failure after one track day at VIR. It's the same front right bushing. BMR sent a new set of bushings, ETA is tomorrow. I'm drinking a beer and contemplating going back to stock or risking another track day.





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Old 06-21-2020, 06:29 PM   #44
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Quote:
Originally Posted by Badmojo View Post
Second failure after one track day at VIR. It's the same front right bushing. BMR sent a new set of bushings, ETA is tomorrow. I'm drinking a beer and contemplating going back to stock or risking another track day.





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A+ for consistency!

PS the more beer the lesser problem this will become. Or maybe not Seriously tho, good luck and dont take any chances...
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Old 06-21-2020, 09:58 PM   #45
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go back to stock IMHO!
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Old 06-22-2020, 09:12 AM   #46
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Quote:
Originally Posted by Badmojo View Post
Second failure after one track day at VIR. It's the same front right bushing. BMR sent a new set of bushings, ETA is tomorrow. I'm drinking a beer and contemplating going back to stock or risking another track day.





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Try my solution with the new bushings. This is why i made the thread!

I'm shocked that BMR hasn't posted in here yet, kind of disappointing if they are just going to keep ignoring the problem.
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Old 06-22-2020, 08:36 PM   #47
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I think the cause of the failure is that the molded in boss for the grease is shearing under load and causing an initiation point for the bushing to split. Both failures occurred in the middle of the bushing and the boss was sheared off. Additionally, the bushing height is 2-3 mm above the bracket. When the bushing is compressed it goes oval shaped and limits the contact surface area with the sway bar. There are also air bubbles close to the molded boss on most of the bushings. BMR sent me eight of them free of charge.


Mods:
1. Shaved the bushing to just above bracket height.
2. Removed the molded grease boss. The bushing greased better without it.
Attached Images
  
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Old 06-23-2020, 12:50 PM   #48
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I still think you are going to want more surface contact area to disperse the load, but you may be onto something with the grease boss being the initial shear point.
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Old 06-27-2020, 03:42 PM   #49
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Update: BMR is working on some Delrin bushings.



I removed the nord lock washers and went with 10.9 hardware and Loctite. The 10.9 bolts were torqued to the maximum. I let the loctite have a full 24 hour cure before I loaded the suspension again.



I haven't heard any popping from the swaybars on the street yet.



I'm not looking forward to removing the hardware in the future.



Nord lock washers may have a good use, but not on a powder coated sway bar. They need to be back of the nut to the stationary piece without anything in between.
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Old 06-29-2020, 12:35 PM   #50
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Second track day on my solution yesterday and the bushings are still good.

Where are the nord lock washers you are referring to?
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Old 06-29-2020, 06:21 PM   #51
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Good to hear the bushings are still alive.


Nord Lock Washers
https://www.tannerbolt.com/customer/...20Brochure.pdf



Quote:
Originally Posted by TheRealJA105 View Post
Second track day on my solution yesterday and the bushings are still good.

Where are the nord lock washers you are referring to?
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Old 06-29-2020, 08:32 PM   #52
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how about the Hotchkis adjustable sway bar and its mount solution? Check them out as many use it with success.
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Old 06-30-2020, 12:37 PM   #53
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Quote:
Originally Posted by Badmojo View Post
Good to hear the bushings are still alive.


Nord Lock Washers
https://www.tannerbolt.com/customer/...20Brochure.pdf
Are you using them on the endlinks or the bushing mounts?

Quote:
Originally Posted by Stephen12ZL1 View Post
how about the Hotchkis adjustable sway bar and its mount solution? Check them out as many use it with success.
Not looking to change bars and their bushing setup looks pretty much the same. Not sure who is running this bar for a comparison?
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Old 06-30-2020, 04:48 PM   #54
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I received an email from BMR saying their SB052 is out of stock.
Speculation and hope here: they're not shipping until they get this sorted.

I had real good service with one of their rear bars on my 5th gen 1LE. I ran the OEM up front.
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Old 06-30-2020, 09:00 PM   #55
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Quote:
Originally Posted by TheRealJA105 View Post
Are you using them on the endlinks or the bushing mounts?



Not looking to change bars and their bushing setup looks pretty much the same. Not sure who is running this bar for a comparison?
Coby Shield in his SS 1LE
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'15 Z/28 #325 Black a/c & stereo. 2:10.1 VIR Full (sold)
'12 ZL1 A6 Black 10.52@131 1.55 60' 2:13 VIR Full (sold)
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Old 06-30-2020, 09:06 PM   #56
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Coby just started running the Hotchkis bar. I steered him away from BMR. He actually had an order placed and canceled.
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2004 Mystichrome Cobra 11.90 @ 120 MPH on Nitto DR. 461 RWHP, 468 TQ
351W 93 Fox Body 11.5 @ 118 MPH 351W
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