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Thread: Need 14mm ring gear bolts...

  1. #1
    Join Date
    Jun 2013
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    A Beach in Fl, US
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    Z3 Turbo Ferrari 328gts

    Need 14mm ring gear bolts...

    I have got my 188mm rear differential cleaned and ready to assemble first thing i was going to do was bolt ring gear to LSD and my ring gear bolts are to small looks like i need the 14mm? if anyone has a set they want to sell please let my know. not sure what the gear set came out of but the holes line up just bolts don't fit. i pulled 2 other 188mm diffs apart looking for bolts and even pulled my 210mm diff all had the small bolts... Help
    2001 Z3M S52 OBX T4 Top Mount, GTX3582R T4 1.06, 66MM Compressor, 3 Inch IC Pipes,HPX, Wiseco 8-1, Ported Head, Carrillo Pro​ Rods, CES Cut Ring, 3.5 Exhaust, ARP, Big FMI, Turbonetics Gate Fender Exit, 2 Walbro Pumps, UUC 6 Puck Ceramic, Aluminum Flywheel. With working A/C.

  2. #2
    Join Date
    Feb 2016
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    Rogers AR
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    4,426
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    1995 BMW M3
    did the ring gear not come with any bolts?

    Sent from my 831C using Tapatalk

  3. #3
    Join Date
    Jun 2013
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    A Beach in Fl, US
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    My Cars
    Z3 Turbo Ferrari 328gts
    No,is a used gear set i got 6 months ago, I didn't know there were 2 different size bolts until today. I cant believe that the 210mm ring gear uses the small bolts, anyone know why only some 188mm have big bolts but not the 210mm?
    2001 Z3M S52 OBX T4 Top Mount, GTX3582R T4 1.06, 66MM Compressor, 3 Inch IC Pipes,HPX, Wiseco 8-1, Ported Head, Carrillo Pro​ Rods, CES Cut Ring, 3.5 Exhaust, ARP, Big FMI, Turbonetics Gate Fender Exit, 2 Walbro Pumps, UUC 6 Puck Ceramic, Aluminum Flywheel. With working A/C.

  4. #4
    Join Date
    Feb 2016
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    Rogers AR
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    1995 BMW M3
    just from what I've seen, the e36 lsd uses m14 and e36 non lsd use m12? no idea about 210mm

  5. #5
    Join Date
    May 2002
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    SW Florida
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    12,682
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    99-01 M Cpe & Rdts, X5M
    Try contacting Thayer Motorsports, they supply internal parts to the three major BMW case sizes (168, 188 & 210 mm); I've only purchased the LSD rebuilding kits (spacers and friction discs) from them, but pretty sure they supply other parts as well.

    https://thayermotorsports.com/

  6. #6
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    2003 M5, 2014 535i
    You can buy them using part number 33132227347.

    2003 M5 LSx l 6 Spd Manual l 4.10 LSD
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    The chassis must always be regarded as a means to an end and never as an end itself

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