02-26-2024, 07:27 PM | #1 |
Monterey County Camaros
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Torque Spec
Anyone have the torque spec for the BMR rear end link part that connects to the sway bar (circled in red)? Emailed the company but curious what others may have done. Currently at 22lb/ft.
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02-27-2024, 06:50 AM | #2 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,992
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I just tightened mine by feel, I too never saw a torque spec.
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02-27-2024, 08:33 AM | #3 |
Monterey County Camaros
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But like how tight? Tight as possibly, or tight until you have to apply some force. Reason I ask is because I installed right the first time but when I took it apart the other day I'm left with a horrible squeak. Used tri-flo which helped for 30 minutes then the noise was back. Which leads me to think I now overtightened. I just can't remember what I did the first time around
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02-27-2024, 10:06 AM | #4 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,992
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I have it snug but not too hard, I didn't really crank on it at risk of stripping it.
I had a squeak with my BMR bar and it was the frame mounts, the bracket was too tight on the bushing and thus the bar and no matter the grease it was too tight. Check yours for that. I thought it was the end links but I was wrong. YOu should be able to rotate the bar in the bushings in its range of motion by little more than finger pressure. If you have to really push it up or down then it's too tight. I put a washer under the lower frame mount bolt to free it up and the squeak disappeared. Also, the end links if you have to pull the bar down to meet the stock length that's too much. The arm should be close to parallel or level with the ground and meet the end link at about a 90 degree angle. My end links are maxed out on length. Sorry it's a little wordy but Im been around the world and back with BMR's bar. I think it sucks. |
02-27-2024, 11:02 AM | #5 |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
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My manual says 32ft-lbs for the nut and 43ft-lbs for the bolt at the other end of the link. Seems high to me but it's a Chevy and all torques are high on this car.
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02-27-2024, 12:39 PM | #6 | |
Monterey County Camaros
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Quote:
Pretty sure it's the end links. Bar is torqued to BMR specs. Not sure if my heim joints are already bad. Have about 20,000 miles on them. See video https://www.youtube.com/shorts/AXomWDcCYkM
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02-27-2024, 01:40 PM | #7 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,992
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OK I just saw your video, which was how I was going to suggest you test those. I think you'll have to replace those, my guess with yours would be that they're worn out. Sorry I was thinking you had problems with a new install.
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02-27-2024, 03:01 PM | #8 |
Monterey County Camaros
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I was thinking they're worn out too. Car is daily driven too much for such a stiff part. I actually ended up selling the fronts and went with the fe3 metal end links which seemed to be fine for track/autocross and daily. Might do the same with the rear. If I do, does anyone know if their is a difference from the fe2 with the fe3 or fea/fe4 rear end links?
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02-28-2024, 03:21 PM | #9 |
Drives: Garnet Red - 20 ZLE Join Date: Jun 2016
Location: Southern California
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Its a wear item, id replace the end link. The Teflon is probably smoked.
You can browse the FK catalog for what you need. Personally, Id do chromoly, its probably over kill but for a daily, better safe than sorry (extremely sorry. ) |
02-28-2024, 07:33 PM | #10 |
Monterey County Camaros
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I figured they were shot. Last night I took one of the heim joints off, measured, and ordered chromoly replacements. While at it I ordered race boots. Waiting for everything to be delivered. New front rotors coming too but that's a different story.
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03-01-2024, 05:59 PM | #11 |
Monterey County Camaros
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For future reference and information,
BMR rep recommended the bolt connecting the end link to sway bar be torqued to 60lbs/ft. However, the bolt BMR provided is 3/8". Assuming a grade 8 bolt, the max torque value is only 44, which is significantly less than the value BMR suggest. Gunkk provided a screenshot showing a value of 32 ft/lbs. I went with that value and the car seems fine. 32 also seems pretty tight. End link heim joints were replaced with a chromoly option which feels slightly sturdier. While they seemed to come pre-coated, I went ahead and added some tri-flow and let sit for 30 minutes. To protect from the elements I found heim joint covers and installed.
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03-02-2024, 07:23 AM | #12 |
Drives: 23 ZL1 A10 Rapid Blue Join Date: Aug 2020
Location: MO
Posts: 1,992
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Nice update thanks!!
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