New Rear LCAs and Panhard bar noise
#1
Teching In
Thread Starter
New Rear LCAs and Panhard bar noise
Hey all,
I recently installed some BMR rear LCA's and adjustable Panhard bar(both poly bushings) on my 00 Trans Am. Since then I've had a pretty consistent rattle. I'm pretty sure it's the panhard bar because after torquing to specs I thought what the hell and cranked on the bolts and seemed to make it better. The rattle i'm experiencing seemed to shift sides it was coming from when turning and now is only happening going straight on less than even roads and turning right. I've read washers being used to help make things more snug and I've also read that the difference in size of the stock bolts and bushing sleeves can cause some rattle. Can anyone confirm?
I recently installed some BMR rear LCA's and adjustable Panhard bar(both poly bushings) on my 00 Trans Am. Since then I've had a pretty consistent rattle. I'm pretty sure it's the panhard bar because after torquing to specs I thought what the hell and cranked on the bolts and seemed to make it better. The rattle i'm experiencing seemed to shift sides it was coming from when turning and now is only happening going straight on less than even roads and turning right. I've read washers being used to help make things more snug and I've also read that the difference in size of the stock bolts and bushing sleeves can cause some rattle. Can anyone confirm?
#2
TECH Apprentice
I know, it's a pain in the a%$, but would it be worth re-installing the old panhard rod and driving just a tiny bit to see if the noise goes away? If you're car isn't lowered, the nonadjustable panhard rod should be ok to drive around for a bit. That way you can know for sure if it is or isn't the new panhard rod. On a related note, two years ago I bought a wireless "stethoscope." I was hesitant on buying one since they're so much money, but when I did, I was so glad I did buy the thing. The hours of frustration saved made it worth it for me.
The following users liked this post:
moist (02-28-2020)
#3
TECH Veteran
iTrader: (4)
You've replaced 6 OEM rubber bushings ( essentially they were 'shock absorbers' at connecting points) with 6 poly bushings. Those 'rattles' that were previously non-existent came to be. We, I'm a 'modifier' too, seek better handling in our suspension components but give up what GM designed into the components. Same thing happens with aftermarket torque arms, users complain of new noises.
Just my opinion with no way of proving it.
Just my opinion with no way of proving it.
The following 2 users liked this post by FirstYrLS1Z:
moist (02-28-2020), War Prayer (04-06-2020)
#4
LS1Tech Premium Sponsor
iTrader: (40)
Hey all,
I recently installed some BMR rear LCA's and adjustable Panhard bar(both poly bushings) on my 00 Trans Am. Since then I've had a pretty consistent rattle. I'm pretty sure it's the panhard bar because after torquing to specs I thought what the hell and cranked on the bolts and seemed to make it better. The rattle i'm experiencing seemed to shift sides it was coming from when turning and now is only happening going straight on less than even roads and turning right. I've read washers being used to help make things more snug and I've also read that the difference in size of the stock bolts and bushing sleeves can cause some rattle. Can anyone confirm?
I recently installed some BMR rear LCA's and adjustable Panhard bar(both poly bushings) on my 00 Trans Am. Since then I've had a pretty consistent rattle. I'm pretty sure it's the panhard bar because after torquing to specs I thought what the hell and cranked on the bolts and seemed to make it better. The rattle i'm experiencing seemed to shift sides it was coming from when turning and now is only happening going straight on less than even roads and turning right. I've read washers being used to help make things more snug and I've also read that the difference in size of the stock bolts and bushing sleeves can cause some rattle. Can anyone confirm?
__________________
Glenn ***
Sales Tech
www.bmrsuspension.com
813.986.9302
Find a Quality alignment shop near you!
Glenn ***
Sales Tech
www.bmrsuspension.com
813.986.9302
Find a Quality alignment shop near you!
The following users liked this post:
moist (02-28-2020)
The following users liked this post:
moist (02-28-2020)
#6
Teching In
Thread Starter
I know, it's a pain in the a%$, but would it be worth re-installing the old panhard rod and driving just a tiny bit to see if the noise goes away? If you're car isn't lowered, the nonadjustable panhard rod should be ok to drive around for a bit. That way you can know for sure if it is or isn't the new panhard rod. On a related note, two years ago I bought a wireless "stethoscope." I was hesitant on buying one since they're so much money, but when I did, I was so glad I did buy the thing. The hours of frustration saved made it worth it for me.
#7
Teching In
Thread Starter
Trending Topics
#8
Teching In
Thread Starter
You've replaced 6 OEM rubber bushings ( essentially they were 'shock absorbers' at connecting points) with 6 poly bushings. Those 'rattles' that were previously non-existent came to be. We, I'm a 'modifier' too, seek better handling in our suspension components but give up what GM designed into the components. Same thing happens with aftermarket torque arms, users complain of new noises.
Just my opinion with no way of proving it.
Just my opinion with no way of proving it.
#11
Teching In
Thread Starter
Haha, don't the heims have a ton of play on these cars?
#12
Teching In
Thread Starter
#13
Only from the companies that use cheap heim joints. The deal is we can all make LCA and PHB for the same cost when it comes to the arms themselves. The companies that sell the exact same product yet sell it for extremely lower are doing so by the one thing none of control and that's by using cheaper heim joints. to drop the value of their product. Sadly everyone runs out and buys the cheap product then once it makes noise lumps everyone together. We use a high quality teflon lined heim joint. This quiets down the clanking sound.
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moist (03-16-2020)
#14
TECH Apprentice
#15
Teching In
Thread Starter
#16
TECH Fanatic
iTrader: (3)
I would just like to say that I have quite a few poly & helm joint parts of my car (UMIPerformance & Midwest Chassis) and I have absolutely no rattles or noises to report. Key to a quiet ride is make sure all your joints are well lubricated with whatever the manufacturer suggests, and make sure everything is torqued down tight (With the rear end loaded so you don't introduce bind), make sure you have the right pinion angle set (This one surprised me, but really helped to eliminating random noises going over bumps). I used to have all sorts of rattles but once I did these correctly, I haven't hear a squeak.
The following users liked this post:
moist (04-06-2020)