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Thread: E46 M3 subframe reinforcement and other upgrades

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  1. #1
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    E46 M3 subframe reinforcement and other upgrades

    Will show some small project of some E46 M3 which just left my place.
    Tom booked it in for BMW Performance brakes , H@R suspension upgrade and Inspection 2 .Car got quick check over and was found few small cracks in the floor on subframe fitting points ,mostly cracks rear left and front right ones .Owner without any big questions gave me green light to go ahead with all work and left car for over two weeks to get it done without hurry .

    So i started ,subframe and fuel tank was removed.rusty fuel filling hose clips and brake lines ,subframe bushes with cracks ,worn stud axle bushes and track adjust bolts rusty inside to death ,needed to cut them in parts to remove ball joins without damaging track arms. Diff front bush as gets most pressure and prop shaft CV joint gasket .Exhaust back box clams so rusty as felt of in bits ,one of hanger rubbers cracked and few rusty exhaust bolts .
    Front suspension, very rusty and still OEM steering tie rods,the guys on tracking would not start work with them .
    Plates got from Redish Motorsport ,very nice guys to deal and with quick delivery .So car got all 4 new subframe bushes, 4 new stud axle bushes ,OEM rear brake lines from front to back wheels ,steel braided hoses all around ,rear new shock top mounts and gaskets ,all around new hose clips on fuel tank,prop shaft CV joint gasket,oil +air+fuel+pollen filters ,engine oil,oil constant pressure valve ,rocker cover gasket full set ,oil pick up filter cover gasket in the sump,complete tie rods,spark plugs ,valve adjustment - 8 of them was out of limits.new BMW E46 M3 CSL front brake discs and BMW Performance Brembo callipers with BMW OEM brake pads and brake pad wear sensor. All this fitted in and full tracking done .

  2. #2
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    RE: E46 M3 subframe reinforcement and other upgrades

    All rusty spots was cleaned with steel wire brush and got coat of rust remedy ,left for over 24h. Cracks welded ,plates measured ,welding places grinded for best weld result and plates welded on. Welding lines cleaned with grinder and covered with primer .All weld covered with silicone and over painted .the back left fitting point was opened from car inside in the boot to make sure its no cracks and re-weld .
    Now pictures coming on
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  3. #3
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    RE: E46 M3 subframe reinforcement and other upgrades

    the left floor and side wall crack
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  4. #4
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    RE: E46 M3 subframe reinforcement and other upgrades

    cleaned ,made some more custom weld spots and full weld
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  5. #5
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    RE: E46 M3 subframe reinforcement and other upgrades

    rear suspension and car washed off ,rust remedy on
    [hr]
    front brakes coming on
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  6. #6
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    RE: E46 M3 subframe reinforcement and other upgrades

    tie rods,brake hoses and brakes on
    [hr]
    suspension rebuild
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  7. #7
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    RE: E46 M3 subframe reinforcement and other upgrades

    oil pick up filter gskt and oil constant pressure valve replaced
    [hr]
    diff bush , rocker cover gasket set
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  8. #8
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    RE: E46 M3 subframe reinforcement and other upgrades

    plates and start of weld
    [hr]
    weld works
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  9. #9
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    RE: E46 M3 subframe reinforcement and other upgrades

    primer,silicone,paint and brake lines
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  10. #10
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    RE: E46 M3 subframe reinforcement and other upgrades

    fuel tank is back,CV joint gskt, brake hoses,exhaust clamps and blue racing brake fluid
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