Hi,
The stud part of the bump stops are steel, the trailing arm - aluminium.
The answer is "galvanic corrosion" and those things can be a real bitch to
get out. Seeing that your DPO took the liberty to reduce your old bump
stops to basically a headless bolt, then you don't have much choice.
You'll need a bolt extractor and a little heat. Center punch the bolt then
drill it out to accomodate an extractor then heat the trailing arm with
propane for a while... when it gets hot enough, that bolt will come right out.
When you reassemble, put a little anti-sieze compound on the new bump stop
and you won't have this problem the next time...
Oh - did you figure out why the bump stop was hacked off??? You should,
because there might be other problems back there...
Good luck.
rml
TR6's
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