Gee-dog Member 27 Member For: 10y 8m 19d Posted 19/06/14 09:57 AM Share Posted 19/06/14 09:57 AM So I've pulled the LH rear Bilstein out, and done some measurements.Top mount diameter:Bolt - 11.85mmOEM Shock - 12.35mmBilstein Shock - 12.20 mmTop mount width:OEM - 39.00mmBilstein - 39.65mmBottom mount diameter:Bolt - 12.56mmOEM Shock - 14.4mmBilstein Shock - 14.0 mmBottom mount width:OEM - 49.95mmBilstein - 49.45mmSo the mount holes in the Bilstein are smaller than the OEM, and the width of the top mount is larger. I can't see how this would introduce a knocking noise, but I'll re-allemble with some grease & see what it does. Link to comment Share on other sites More sharing options...
ello678 Member 38 Member For: 12y 10m 5d Posted 19/06/14 10:03 AM Author Share Posted 19/06/14 10:03 AM Interesting...that is the opposite of what I thought it would be. I was planning on doing the same thing this weekend, if I get time ill measure the left side shock as that is the one making most of the noise. Sent from my SM-G900I using Tapatalk Link to comment Share on other sites More sharing options...
LEEXR6T Donating Members 91 Member For: 19y 8m 13d Gender: Male Posted 24/06/14 02:31 AM Share Posted 24/06/14 02:31 AM Any updates gents?Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
ello678 Member 38 Member For: 12y 10m 5d Posted 28/06/14 01:22 AM Author Share Posted 28/06/14 01:22 AM Ok, so ive just taken the bilsteins out to measure the hole diameter and they are about 0.1mm smaller than stock. So I was thinking it surely cant be the bilsteins but I wanted to be sure. So ive just chucked the stock shocks back in and sure enough, quiet as a mouse! I took it for a half hour drive along the normal route when it used to knock like crazy and the stock shocks were fine. It must be something internal in the bilsteins. I got them from Wholesale and Pat is a good guys so im hoping he can help me out when I give him a call on Monday. Link to comment Share on other sites More sharing options...
LEEXR6T Donating Members 91 Member For: 19y 8m 13d Gender: Male Posted 29/06/14 12:57 AM Share Posted 29/06/14 12:57 AM Ok thanks mate, look forward to hearing your progress. Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Jaxon New Member 3 Member For: 13y 7m 16d Posted 29/06/14 08:32 AM Share Posted 29/06/14 08:32 AM I've got this problem as well. Bilsteins with king springs and the first version of the ball jointed rear sway bar links. I've been under the car and tightened everything. Was thinking it was the sway bar links? I'll put the old ones back in and report. Rear, left. Link to comment Share on other sites More sharing options...
ello678 Member 38 Member For: 12y 10m 5d Posted 16/07/14 03:24 AM Author Share Posted 16/07/14 03:24 AM Ok just an update, sorry for the long post, I should have taken some pics, so I'll explain what I did.I took the bilsteins to Pat and he took them away to get tested on a shock dyno but he came back and said the shocks were fine. This left me a bit confused, however he did mention it could be something to do with three abnormal grooves in the top shock mount.So when I went to put the bilsteins back in I noticed three small bumps on the inside of the shock bracket (on the car). These three bumps are cause when ford weld the nut to the bracket, this causes the metal bracket to deform slightly. Now because the stock shock mount is thinner than the bilsteins there is no issue. But the bilsteins are slightly wider so you really have to force them in the bracket (I even had to loosen the bracket a bit), and when you tighten the shock bolt it crushes the bracket onto the shock mount and makes three small grooves, so now the shock mount is interlocking with the shock bracket. So my theory is, when you drive along and hit these small consecutive bumps, the shock moves up and down ever so slightly, which forces the shock mount in and out of the groove causing this knocking noise. So before I put the bilsteins back on the car, using a small grinder, I ground the shock mount down a few mm where the three grooves were, put it back in with a little bit of grease, and the noise was gone. So if you have the same problem as I did, and you've recently fitted bilsteins, pull them out and look for three small grooves on the top shock mount and grind them out! 1 Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 1m 29d Gender: Male Location: Perth Posted 16/07/14 04:31 AM Share Posted 16/07/14 04:31 AM Dont drive slow and turn the stereo up. Fixes most issues 2 Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 17y 1m 2d Gender: Male Location: Probably above atmospheric pressure Posted 16/07/14 04:59 AM Share Posted 16/07/14 04:59 AM Certainly your attention will be elsewhere Link to comment Share on other sites More sharing options...
LEEXR6T Donating Members 91 Member For: 19y 8m 13d Gender: Male Posted 16/07/14 05:48 AM Share Posted 16/07/14 05:48 AM Thx ello, I'll get mine checked!Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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