XK8 / XKR ( X100 ) 1996 - 2006

Shock/spring question

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Old Nov 16, 2022 | 11:14 AM
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Default Shock/spring question

Hi all,
Since I had to replace my upper bushings, I decided I might as well replace the (non-electric) shocks while I'm at it. With 120,000 miles on them, I figured it was a worthwhile and not-too-painful investment. Not surprisingly, the shock bellows and bumps stop are toast, as are the plastic cushions for the spring seats. So far, I have not found a source for these items. Hoping I might get some suggestions. As an aside, I am curious if I can fashion my own spring seat pad, maybe a sandwich made of the stiff plastic used in pails and jugs. All thoughts appreciated.
Thanks!
 
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Old Nov 16, 2022 | 11:49 AM
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In December 2015 I ordered the front bellows and bump stops for my wife's 2006 XK8 from partsgeek.com. My invoice shows a part number of SB101. They were made by KYB. The total cost was $40.71....
 
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Old Nov 16, 2022 | 11:52 AM
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Thanks, Jon. I'll check them out.
 
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Old Nov 16, 2022 | 01:38 PM
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Looking for (what I now know is called) the spring isolator and came across this part: https://www.oemvehicleparts.com/oem-...seat-mja2162aa
At $3, it seems too cheap.
Then I found this: https://parts.harperjaguar.com/oem-p...lator-c2z15891
Also found some more "elaborate" and expensive versions. Could a $3 part fill the bill?
 
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Old Nov 16, 2022 | 03:02 PM
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Originally Posted by Stamford
Looking for (what I now know is called) the spring isolator and came across this part: https://www.oemvehicleparts.com/oem-...seat-mja2162aa
At $3, it seems too cheap.
Then I found this: https://parts.harperjaguar.com/oem-p...lator-c2z15891
Also found some more "elaborate" and expensive versions. Could a $3 part fill the bill?
I do not think they are what you are looking for.
 
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Old Nov 16, 2022 | 03:24 PM
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Advanced Auto Parts - MOOG PN: K90460 is equivalent to Jag PN: MJA2150BA for the front spring assistors (bump stops)

As for fashioning something for the spring seat pad - don't see why one couldn't
 
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Old Nov 16, 2022 | 05:38 PM
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KYB SB101

 
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Old Nov 16, 2022 | 05:44 PM
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That's what I suspect.
 
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Old Nov 16, 2022 | 06:24 PM
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What shock mount are you going to use?
 
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Old Nov 17, 2022 | 01:42 AM
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If you look at recent posts about " Welsh" you will find extensive photos etc of the parts which can be made from sheet polypropylene using a router or a lathe. In your parts list its the $34 item you need in the bottom row

This post
Got a plastic welder & welsh mounts? Read this
 
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Old Nov 18, 2022 | 12:32 PM
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Going with URO, which may not be the world's best mount, but I'm trying to keep costs down.
 
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Old Nov 18, 2022 | 12:39 PM
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Couldn't find the list. However, I just learned I was using some incorrect terminology. The term "isolator" seems to relate more to the mount. What I am trying to find is the white plastic tabbed collar that I assume the spring rests on. Mine was crumbled. I don't know what it is called.
There are also two rubber(?) pads under the spring that are known as "packing". I've ordered new packing, but can't located the white tabbed ring. (So far I've only removed the left shock/spring.
 
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Old Nov 18, 2022 | 12:48 PM
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Are you aware that you will be fortunate indeed to get six months out of the URO shock mounts before they fall apart?
 
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Old Nov 18, 2022 | 01:19 PM
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I've read mixed experiences and, yes, many were bad. I'm not driving the car that much of late so it should be good for a couple of years. I hope.

Also, I bought these a couple of years ago - before I heard their performance could be questionable. A bit too late for refund.
 
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Old Nov 19, 2022 | 12:33 AM
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I have just ordered a sheet of 1/2in (12.5mm) thick poly and intend to cut a ring from it and put it between the top of the shock mount and the body 160mm dia 90mm hole in centre . there is 14mm of clear thread on the three bolts. My central bushing is fine but the ride height is at 14.5 in so I have lost a good inch in 112k.Keep costs down.. the poly was $8 enough for two
 

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Old Nov 20, 2022 | 03:45 PM
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Interesting and novel solution.
 
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Old Nov 21, 2022 | 01:08 AM
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Am waiting for the material to arrive then I will cut it on the lathe with a parting tool.
May not fit for some time as the weather is cold but will send pictures and measurements.
 
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Old Nov 22, 2022 | 02:23 AM
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Originally Posted by Stamford
What I am trying to find is the white plastic tabbed collar that I assume the spring rests on. Mine was crumbled. I don't know what it is called.
There are also two rubber(?) pads under the spring that are known as "packing". I've ordered new packing, but can't located the white tabbed ring. (So far I've only removed the left shock/spring.
I was also unable to find new versions of the white spring seat that you are searching for. They seem to be quite brittle but their design means they are well retained even when cracked. I viewed a few second hand items but the cracks are very common. My seats were cracked in half and in the end I resorted to gluing them to the plastic spacer beneath. They are still OK after a few years - see pic

 
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Old Nov 22, 2022 | 08:38 AM
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Originally Posted by PKWise
I was also unable to find new versions of the white spring seat that you are searching for. They seem to be quite brittle but their design means they are well retained even when cracked. I viewed a few second hand items but the cracks are very common. My seats were cracked in half and in the end I resorted to gluing them to the plastic spacer beneath. They are still OK after a few years - see pic
PKWise, mine were cracked and I also glued them (JB Plastic Weld). Worked great especially since this part is no longer available.
 
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Old Nov 23, 2022 | 11:00 PM
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I got new white plastic spring seats with new shocks. Last time I bought shocks? 15 months ago.

Hey regarding making a homemade version- don't forget the white plastic doo-dad has a built-in tab to position the spring and therefore the upper shock mount on top of it!

John
 
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