What alternator should i run?

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  • QUKBMER
    R3V OG
    • Feb 2010
    • 8178

    #1

    What alternator should i run?

    I am doing a s50 swap in my late model e30 and i need to order a reman BOSCH alternator and they have 80amp and 140 amp which should i run? As the motor i have doesn't have one on it.
    Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

    garage queen 91 bmw 325is / 1972 Chevy El Camino 355 sbc 450hp
  • Poeman446
    Wrencher
    • Jun 2013
    • 227

    #2
    Can't you just look for the OEM alternator for a 95 M3, and use whatever it specifies?

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    • AndrewBird
      The Mad Scientist
      • Oct 2003
      • 11892

      #3
      If it fits, I'd go with the higher amperage one.

      I know on e34s automatic cars got a higher amp alternator than manual cars. Could be the same for m3/e36.

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      • justin_l_
        E30 Enthusiast
        • Jun 2007
        • 1079

        #4
        If you plan on supercharging you usually have to grind the 140 amp alternator.

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        • QUKBMER
          R3V OG
          • Feb 2010
          • 8178

          #5
          Well they offer both alternators on the 95 m3 80amp and 140amp. I think i will go with the 140 amp since the late model e30 325i uses a 95 amp on a auto or manual car. Wouldn't make sense going backwards in amp's.
          Your signature picture has been removed since it contained the Photobucket "upgrade your account" image.

          garage queen 91 bmw 325is / 1972 Chevy El Camino 355 sbc 450hp

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