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Discussion Starter · #1 ·
Hey guy,

So the Z3M I purchased has some welds popped and a tear in the trunk. On the underside the diff mount and all other welds look great. From what I can see only one of the popped welds popped all the way to the underside (if that makes sense?) It seems that the sheet metal is layered, trunk floor, then two layers for the big long reinforcement that runs from one axle to the other. From what I can see only the trunk floor "layer" has gone up welded while the main support that the diff ears are mounted to are perfectly fine.

So my question is would it be worth it to drill the popped welds up top through the trunk floor and the other two layers of sheet metal to add a bolt or is the trunk floor layer itself not integral to the structure of the vehicle. Pics included. Thanks guys. (fyi not ready to drop 4k on her yet for randy's kit and labor)

https://www.dropbox.com/s/x8wx8z3nbbmmkyu/Photo Jul 11, 3 32 31 PM.jpg?dl=0

https://www.dropbox.com/s/ta97454122t22bs/Photo Jul 11, 3 32 49 PM.jpg?dl=0

https://www.dropbox.com/s/631ud0eg9kfsbur/Photo Jul 11, 4 24 02 PM.png?dl=0

https://www.dropbox.com/s/nr7chcd378pieq9/Photo Jul 11, 4 22 50 PM_LI.jpg?dl=0

Beauty Shot
https://www.dropbox.com/s/fkel2paahxl9fhx/z3m2.jpg?dl=0
 

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Warning - Thin Air
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Not recommended. It won't fix the real problem and will make it harder to fix correctly later. The best way to fix it is to install Randy's kit.
 

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BMW CCA 1405
1997 BMW Z3 1.9
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mine did the same thing. last year, i consulted with a couple shops in CA to install randy's fix, i ended up just shipping the car to florida and had randy do a bunch of stuff to it. his trunk/subframe work looks oem like it left the factory like that.
 

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Discussion Starter · #8 ·
So ended up having a local shop weld everything up and reinforce it. They cut open the support chanel welded in a plate to the bottom then welded the trunk floor to the crossmember from above as well as the trunk floor to the side structures. Its not randy***8217;s kit but my Launching/drifting test all the way home confirms its holding. Lol. Total was $1600 which included them welding plates to the diff ears and onto the support crossmember. (Not pictured)
 

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So ended up having a local shop weld everything up and reinforce it. They cut open the support chanel welded in a plate to the bottom then welded the trunk floor to the crossmember from above as well as the trunk floor to the side structures. Its not randy's kit but my Launching/drifting test all the way home confirms its holding. Lol. Total was $1600 which included them welding plates to the diff ears and onto the support crossmember. (Not pictured)
Seems like a great deal for the work performed. Should give you some peace of mind as well.
 
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