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Probably the worst type of repair I’ve ever had to have done on any of my cars, ever.
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Best of all, I now feel very confident launching the car and shifting in turns. There’s no unwanted rear steering and no more thud noise when shifting and accelerating hard. Reinstall everything in the opposite order of removal gas tank, subframe, driveshaft, then exhaust. My car wasn’t that bad so we were able to avoid this. The kit comes with two rectangular plates for you to plug up the access holes you cut into the top.
#E46 M3 SUBFRAME CRACK REPAIR COST CRACKED#
Lastly, spray paint everything to keep welds from rusting.įor badly cracked floorboards, you will have to go thru the cabin of the car, cut into the top side of the floorboard and then weld up more cracking. Then grind down any rosette welds that may keep the subframe from lying flat against the chassis. BMW settles E46 3-series subframe lawsuit, promises to repair affected models. Also fully weld up the rosette holes in the plates to strengthen the plate. The particular model in question is the E46, and covers the complete model run from 1999 through to 2006. Next, fully weld all the way around the plate so no moisture will get in. You may need to hammer the plates to contour to the body first. Next, tack weld the BimmerWorld plates on to the undercarriage. Once the cracks and holes are all welded up you must grind down the welds in order for the reinforcement plates to lay flat against the car. We went ahead and drilled those holes out before welding. We spotted some behind the driver’s rear wheel that had popped loose. If you look closely you might even find that some of your spot welds have popped loose. Click here for installation instructions. Photo Gallery: E46 Subframe Failure / Repair.
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Once the paint and undercoating is removed, you can see the damage clearly. Then prep the metal for welding by sanding down the area completely down to the bare metal. All told, the bill came to about 5,000, but. In addition, I had them put in the IE subframe bushings, some adjustable rear trailing arm bushings, the Rouge Engineering diff cover and a Supersprint exhaust.
#E46 M3 SUBFRAME CRACK REPAIR COST PLUS#
First, clean off all the dirt around the subframe mounting points. about 2,300-2,500 for installation at Haurys Collision on Lake City Way in Seattle plus the price of the kit from Randy. The rear floorboard is made up of several sheets of metal all spot welded together. This kit will save time when repairing the chassis, and is also strongly recommended as a preventative maintenance item. Fixing the BMW E46 Cracked Subframe Issue. This is a good time to inspect the factory spot welds on the entire rear floor. Think of it like an anchor for the welds. These stop-holes will keep the crack from continuing on in the event that the welds don’t hold. Once the paint and undercoating is removed, you can see the damage clearly.īefore welding up the cracks, Precision German Performance recommends drilling tiny holes at the ends of every crack. First, clean off all the dirt around the subframe mounting points.