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Thread: Alternator replacement

  1. #1

    Default Alternator replacement

    HELP!!!! I'm trying to fix my 86 MK3 Supra the alternator have out and I've been reading that I should get a 150-200 Amp alternator does anyone know what is compatible with my car to get that amp. Please let me know ASAP .




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  2. #2
    Dang Dude! No Way Man.
    hvyman's Avatar
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    Default Re: Alternator replacement

    Just get a oem alternator.

  3. #3

    Default Re: Alternator replacement

    OEM alternator drained my battery in 8 days


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  4. #4
    I want all the HAm
    cinderMK3's Avatar
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    Default Re: Alternator replacement

    you bought a new OEM and it still drained the battery? or you saying the original OEM drained it, and that's why you looking for another?



    Original OEM - yes redundant
    Last edited by cinderMK3; September 10th, 2015 at 11:12 AM.

  5. #5

    Default Re: Alternator replacement

    It already had an OEM Bosch alternator and that drained the battery. I've checked all the grounds and that's the only thing that makes sense . I'm also planning to take the stereo out to go with a screen stereo as well as new speakers . Eagle auto electronics they make 200 amp alternators for $150 so I plan to get that it's the same price as OEM alternator


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  6. #6
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    Default Re: Alternator replacement

    What on earth kind of amp are you running that overpowers an oem alternator so damn fast? There are aftermarket companies that make higher output alternators, but maybe there's another problem if you're consistently draining batteries while driving the car.

  7. #7

    Default Re: Alternator replacement

    It's a stock mk3 that's been sitting for 2 years so I'm doing a full over haul I've been reading on supra forums that more amps is good for stereo systems and brighter light.


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  8. #8

    Default Re: Alternator replacement

    That's my only conclusion. So I got the alternator it's a plug and play made by eagle auto electronics


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  9. #9
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    Default Re: Alternator replacement

    Quote Originally Posted by jshjuarez View Post
    It's a stock mk3 that's been sitting for 2 years so I'm doing a full over haul I've been reading on supra forums that more amps is good for stereo systems and brighter light.


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    Oh, I think I misunderstood. I thought you had a massive car audio setup and needed the 200 amp alternator. Factory alternators for the mk3 are 70 and 80 amp. Driftmotion sells a 140 amp alternator as an upgrade. 200 amps seems incredibly high unless you're building a car solely for audio competitions or something.

    I'd recommend just a standard Denso alternator unless you really need to go nuts with the stereo amplifiers.

  10. #10

    Default Re: Alternator replacement

    It's not that I want to go nuts but I'm slowly building up the car I just want really clean audio and would like to know that it won't be a problem drift motion sells the 140 amp for the same price as the 200 amp so win win getting the bigger one just incase


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