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Old 23 March 2011, 06:58   #1
jase128
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Default REAR STRUT KNOCKING...BEST TYPE OF GREASE?

hi...i have a my05 wrx and at low speed/pulling away i get a knock/thud from one of my rear shocks,im led to believe its a common thing due to grease in strut drying up.i've been using the quick fix and greaseing under the dust boot on the strut and this works fine for a month or so..so now im gonna try the long term fix and repack the grease in the shock body,has anyone done this or know which kind of grease is best?
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Old 23 March 2011, 13:53   #2
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Any multipurpose grease will do, as it's a sealed unit.
I re-packed mine, but unfortunatly the knocking means the damage is done to the top bush so a waste of time.

Do what I did,
Remove
Throw in bin
get some aftermarket struts, NOT KYB's

dipster
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Old 23 March 2011, 13:54   #3
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Quote:
Originally Posted by davedipster View Post
Any multipurpose grease will do, as it's a sealed unit.
I re-packed mine, but unfortunatly the knocking means the damage is done to the top bush so a waste of time.

Do what I did,
Remove
Throw in bin
get some aftermarket struts, NOT KYB's

dipster

had kyb adjustables on my classic for 5 years now, awesome bit of kit. why so anti them?
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Old 23 March 2011, 19:56   #4
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As a preventative measure I have repacked my rear struts and fitted grease nipples. Its quite an easy job, in fact the hardest part was removing the bottom nut from the strut, had to make some mods. I used Lucas Red n tacky grease HERE that I got from ebay. But to be honest any good grease will do the job. I would recommend fitting grease nipples as you can then fill the chamber between the bushings.
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Old 23 March 2011, 22:11   #5
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Quote:
Originally Posted by DT-SPD View Post
As a preventative measure I have repacked my rear struts and fitted grease nipples. Its quite an easy job, in fact the hardest part was removing the bottom nut from the strut, had to make some mods. I used Lucas Red n tacky grease HERE that I got from ebay. But to be honest any good grease will do the job. I would recommend fitting grease nipples as you can then fill the chamber between the bushings.
How long did it take you to do ?
Are they silent again?
Mine are silent again after a good spray of white lithium grease
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Old 23 March 2011, 22:45   #6
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Took a good 2 hours a side but I did have trouble with the bottom nuts and I cleaned up the struts and painted them etc. It turns out that they were not the source of the noise I had ( car needed new outrigger bushes ) but at least I now know that they are not going to start knocking as they are packed full of grease.
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Old 23 March 2011, 23:21   #7
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Quote:
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had kyb adjustables on my classic for 5 years now, awesome bit of kit. why so anti them?

KYB are the oem supplier, iirc
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Old 24 March 2011, 08:56   #8
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As above, KYB make the dreadful std shocks.

dipster
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Old 24 March 2011, 10:44   #9
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ahh that makes sence, yeah the standard shocks are kyb, but there pretty crap lol

the uprated ones are much much better.
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Old 25 March 2011, 20:58   #10
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Quote:
Originally Posted by DT-SPD View Post
Took a good 2 hours a side but I did have trouble with the bottom nuts and I cleaned up the struts and painted them etc. It turns out that they were not the source of the noise I had ( car needed new outrigger bushes ) but at least I now know that they are not going to start knocking as they are packed full of grease.
Did you replace with OE or uprated items. If so what did you use, from where and how much. Thanks Bob
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Old 26 March 2011, 01:06   #11
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Did you replace with OE or uprated items. If so what did you use, from where and how much. Thanks Bob
The outrigger bushes ??

I used PowerFlex items, about 20 each from ebay, PFR69-124 here http://cgi.ebay.co.uk/POWERFLEX-BUSH...item45f32d041d and PFR69-118 from the same seller.

Quite a big job to fit, cost me 260
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Old 26 March 2011, 10:51   #12
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Quote:
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Mine are silent again after a good spray of white lithium grease
white lithium grease as a temp fix.
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Old 29 March 2011, 13:50   #13
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Quote:
Originally Posted by DT-SPD View Post
As a preventative measure I have repacked my rear struts and fitted grease nipples. Its quite an easy job, in fact the hardest part was removing the bottom nut from the strut, had to make some mods. I used Lucas Red n tacky grease HERE that I got from ebay. But to be honest any good grease will do the job. I would recommend fitting grease nipples as you can then fill the chamber between the bushings.
Can you post some pics of exactly where you put the grease nipples, interested in this.
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Old 29 March 2011, 22:23   #14
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Quote:
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Can you post some pics of exactly where you put the grease nipples, interested in this.
I followed a process I found online here http://forums.nasioc.com/forums/show....php?t=1911692

Here are some pics, one is of the finished struts ( you can see the grease nipples ) and the other is the mod I made to help me to undo the lower nut.


Click the image to open in full size.

Click the image to open in full size.
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Old 31 March 2011, 12:47   #15
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fitting grease nipples is not the best idea, over time the lower part of the shock cavity could become overfilled with grease and with nowhere for the grease to go this will become an issue preventing the shock compressing.

dipster
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Old 31 March 2011, 15:56   #16
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Quote:
Originally Posted by davedipster View Post
fitting grease nipples is not the best idea, over time the lower part of the shock cavity could become overfilled with grease and with nowhere for the grease to go this will become an issue preventing the shock compressing.

dipster
Its almost impossible to overfill with grease as it is only injected between the upper and lower bushes. When this chamber is full no more grease can be injected ( not using a handheld grease gun at least ). Worst case is that grease goes past the lower bushing over time, however the clearance between the damper and the tube it runs in is plenty big enough for any stray grease to simply pass over the damper as it moves down. As the damper then moves back up the lower bush will simply wipe the grease back into the lower chamber.
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Old 30 May 2011, 23:16   #17
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So what's the cause of the noise i have it on my rear passenger strut is it one of the bushes on the top mount is that all that needs replaced.Mine goes up and down ok and stays in position just want to get rid of noise can i do that by replacing a bush in the mount.
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Old 31 May 2011, 08:53   #18
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Having spoken to a Subaru specialist, the rear struts knocking happening when you start moving from stationary doesn't really affects the car's handling but it can be annoying I suppose.
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Old 31 May 2011, 08:53
 
 
 
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