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Discussion Starter #1
I currently have BC coilovers on my 2011 mazda 3 hatch. I have been noticing in the rear of my car I hear loud clunking or thumping noise when going over bumps? Is that a normal sound from the coils or could it be something else?
 

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Demon Spawn
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swaybar link or swaybar mount bushings usually cause this. my old 03 protégé 5 had this issue and we changed the swaybar, swaybar links and swaybar mounts/bushings and it still always did it (changing the links made it quieter) but it never went 100% away. it only ever did it over speed bumps at low speed (unless I just could not hear it at higher speeds) but that is what I would check 1st and if you change the links look up torque specs because over torqueing can cause them to be noisy. its usually only like 35-45 ft pounds.
 

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Discussion Starter #3
Sounds good, thanks for the help. I actually just bought the CS RSB and am planning to install it after Christmas, so hopefully the sound goes away after that.

swaybar link or swaybar mount bushings usually cause this. my old 03 protégé 5 had this issue and we changed the swaybar, swaybar links and swaybar mounts/bushings and it still always did it (changing the links made it quieter) but it never went 100% away. it only ever did it over speed bumps at low speed (unless I just could not hear it at higher speeds) but that is what I would check 1st and if you change the links look up torque specs because over torqueing can cause them to be noisy. its usually only like 35-45 ft pounds.
 

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+1 endlinks. When youre under the car installing the rsb might as well replace them bc the clunking will only get worse till they fail. Another member on BC's uses Hardrace adjustables
 

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Discussion Starter #5
Sounds good, any other suggestions on endlinks? I heard whiteline is also pretty decent.

+1 endlinks. When youre under the car installing the rsb might as well replace them bc the clunking will only get worse till they fail. Another member on BC's uses Hardrace adjustables
 

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Demon Spawn
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well, im stock right now but moog has provided me good suspension stuff. hardrace is good as well, i have used some of their stuff before
 

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Discussion Starter #7
I think im gonna install the RSB and retighten the endlinks and anything else down there and see if the sound persist. If it does then ill look towards getting new endlinks.
 

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How low is the car? If it is significantly lower than stock you need shorter end links. When you lower the car you need to restore the swaybar to its original orientation. If you don't and the car is pretty low, it is possible that the outer end of the swaybar can hit the floor pan when the suspension is at full compression. A very loud thump will ensue.
You will need stronger endlinks with a significantly stiffer swaybar. The stock links are not real durable and the additional stress of a stronger bar can break them.

ADJUSTABLE SWAY BAR LINKS FOR MAZDA 3 BK 2004-2009 | eBay
 

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Demon Spawn
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I think im gonna install the RSB and retighten the endlinks and anything else down there and see if the sound persist. If it does then ill look towards getting new endlinks.
Be sure to not over torque them, end links are finicky there should be a shop manual in the how to section here that I would bet has that spec
 

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Be sure to not over torque them, end links are finicky there should be a shop manual in the how to section here that I would bet has that spec
35-40 ft/lbs

it's probably endlinks. MOOG's are the best you can get. my post count is too low for links but you can get them from jamesbaroneracing.
No. If the car is lowered and/or has a stiffer rear bar you need stronger adjustable links. The Moogs are OEM replacements, no more. The endlinks above are far stronger than OEM and built just as well if not better than the Moogs.
 

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Lol. Moogs are some of the best you can get. Why do you think JBR recommends them for use with both sway bars they offer? JBR has nothing to gain by recommending a 3rd party company. They choose MOOG because they work. They're stronger than OEM, and I can guarantee OEM and MOOG are both stronger than your ebay special pieces of garbage.. Again, I can't post pics because of my post count but look at them side by side and you'll see the difference. The only thing better might be awr.

Again, I can't post pics or links but just look up MOOG K750069 compared to a stock one.

It's no wonder I left this forum years ago
 

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Demon Spawn
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guess 5 posts was the magic number. Convince me these moogs aren't any stronger than oem...........




and here are awr style if you really need adjustable. Adjustable Mazda 3 rear endlink kit for aftermarket sway bars for Mazda3 2004-2009

I would not be using off brand ebay suspension components on my car.
well i think i am one of those 5 posts anyways 120k miles on moog ball joints swaybar links and tie rod ends should say something, this was on my old protege 5 ended up totaled at 176k miles but did 120k of them on same moog suspension parts and kyb struts, so.....
 

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Lol. Moogs are some of the best you can get. Why do you think JBR recommends them for use with both sway bars they offer? JBR has nothing to gain by recommending a 3rd party company. They choose MOOG because they work. They're stronger than OEM, and I can guarantee OEM and MOOG are both stronger than your ebay special pieces of garbage.. Again, I can't post pics because of my post count but look at them side by side and you'll see the difference. The only thing better might be awr.

Again, I can't post pics or links but just look up MOOG K750069 compared to a stock one.

It's no wonder I left this forum years ago
Actually, no, they aren't. Just another company selling stuff.
Why does JBR recommend them? Because they sell them to make a profit. If they carried Moog stuff and said they were junk that would be pretty stupid and they would be out of business real quick. OEM links are weak and the bolt can separate from the link. Moog is just an OEM replacement for stock suspensions. Period. Those endlinks from German Racing Parts are very substantial and I can guaranty they are quite stronger than those spindly OEM style Moogs. That part you quoted is for 2009 and earlier, won't even fit. For that matter any suspension part you can get at Wallyworld for $28 is not what I would use.
https://www.walmart.com/ip/MOOG-K750069-Sway-Bar-Link-Kit/47838837
They are not even adjustable. Won't work anyway.

GRP endlinks vs OEM


guess 5 posts was the magic number. Convince me these moogs aren't any stronger than oem...........




and here are awr style if you really need adjustable. Adjustable Mazda 3 rear endlink kit for aftermarket sway bars for Mazda3 2004-2009

I would not be using off brand ebay suspension components on my car.
I would not use those endlinks. They have solid Heim joints. These are for racing and get changed pretty regularly. Solid end links like these have a reputation for lasting only a couple thousand miles before starting to bang and thump.

If you don't like it here you are free to leave.
 

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Demon Spawn
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If you don't like it here you are free to leave.
Agreed, I have no issues uploading photos, sometimes viewing them bigger but that's my browser acting up. not the forum's fault. the drag and drop feature for file upload has never worked for me and I use Mozilla at home and IE11 is what we have at work and it does not work either place, going advanced with the click of a button gets you a better upload section that works just fine
 

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Discussion Starter #18
Got the Corksport RSB in. But quick question after installing the RSB, my endlinks are now at an angle and are rubbing against the metal frame of the car is that normal? I did raise the car up half an inch, the sound is still there, but it isn't as loud as it was before. Possibly the endlinks is what im thinking.
 

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Demon Spawn
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Yeah, the links should not be rubbing the control arm like that at all, that's your noise. if the endlinks are adjustable try adjusting them some
 

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Discussion Starter #20
The endlinks are just the stock endlinks. I did adjust them today and so far no more clunking noise, except over big dips in the ground which I try to avoid. But living in San Francisco the roads are terrible for lowered cars lol.
 
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