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Suspension & Braking Forum by BimmerWorld
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Old 07-23-2014, 11:26 AM   #1
Mindspin311
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Preventative maintenance on subframe mounts

I picked up a ZHP sedan a couple months ago. There is no damage related to the subframe, but I would like to do SOMETHING as a preventative measure. What is recommended? Do I really need to get plates welded in place? Or would the foam treatment be the best bet?
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Old 07-23-2014, 12:32 PM   #2
Rob43
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Quote:
Originally Posted by Mindspin311 View Post
I picked up a ZHP sedan a couple months ago. There is no damage related to the subframe, but I would like to do SOMETHING as a preventative measure. What is recommended? Do I really need to get plates welded in place? Or would the foam treatment be the best bet?

The very best/easiest thing to do would be to pull out the two (2) rear subframe bolts & drill up through and into the trunk floor. Then install two (2) long high strength steel bolts grade 8 or better, these need to be long enough to give you an inch or two pop-up into your trunk. Now buy two (2) 1/8", 3/16", or 1/4" steel plates measuring 6X6", 7X7", or 8X8" & drill a centered hole for your new bolt. These plates can be glued in or welded in, I prefer welding myself. Now just bolt everything back together & you're done.



good luck,
Rob43
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