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Thread: MKIII supra swap questions

  1. #1
    Forum Member 1st year Apprentice
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    Default MKIII supra swap questions

    i have a 1988 supra with a 7m motor and i am interested a 1jz motor swap. i like the one they have listed on osakajdmmotors but it says it comes with a a/t and i have a manual. with a new bell housing will that motor work? what else will i need to buy to make it work? i want to keep the manual tranny and as much as i can on the car. the motor i have has bad compression due to a bad piston ring on cylinder 2. i am looking for a lil more power also. what would y'all recommend?

  2. #2
    Hide Yo Kids Hide Yo Wife Carport Converter hamgatan's Avatar
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    Default Re: MKIII supra swap questions

    if its a jza70 a/t halfcut you can run it with the 7M R154 box but yes you will need a new bellhousing.

    most importantly though when you're wiring it up you'll also need to wire the ECU in a way to trick the neutral start switch on the auto box (as its not there..) so the ECU is effectively given the green light to start her up. theres a writeup on that somewhere on the forums here im sure of it.. just search for it.

    This might help though -> http://www.toymods.org.au/forums/showthread.php?t=1593

    Apologies though, the guy who wrote it was a bit of a todger.

    This is a better writeup -> http://www.toymods.org.au/forums/showthread.php?t=64

    EDIT: i just noticed you're in the US.. you might have issues with your steering column side also clearing the intake.. not sure on that but check with the SupraMania guys on that one as were all RHD vehicles here not LHD.
    B7 2005.5 Audi A4 2.0TFSI Quattro Turbo Keepin' My Pimp Hand Strong
    GDB 2003 Subaru Impreza WRX Stock and Unmolested!
    JZZ20 1988 Soarer GT Twin Turbo
    1JZ-GTE + R154 + LSD | Black Knight Still being Assembled
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  3. #3
    Forum Member 1st year Apprentice
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    Default Re: MKIII supra swap questions

    this is a newb question i no, but whats a halfcut lol. this is what im looking at. and yes, its american money

    http://www.osakajdmmotors.com/jdm-en...c269cc68f16e05

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    Junior Member Automotive Encyclopaedia JZA70R_92's Avatar
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    Default Re: MKIII supra swap questions

    Thats a front sump so mosy likley from a jzx90 etc. you will need rear sump, jza70 engine mounts or driftmotion mounts, will need to lengthen the ecu wiring etc join up supramaina lots of info
    1992 - JZA70 STOCK - SOLD

  5. #5
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    Default Re: MKIII supra swap questions

    half cut would be best but prob not needed, just tell the place you are buying the motor from what you intend on doing and ask for all the parts you will need!

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    Hide Yo Kids Hide Yo Wife Carport Converter hamgatan's Avatar
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    Default Re: MKIII supra swap questions

    Quote Originally Posted by JZA70R_92 View Post
    Thats a front sump so mosy likley from a jzx90 etc. you will need rear sump, jza70 engine mounts or driftmotion mounts, will need to lengthen the ecu wiring etc join up supramaina lots of info
    jzx81 actually... 90's have TCCS.
    B7 2005.5 Audi A4 2.0TFSI Quattro Turbo Keepin' My Pimp Hand Strong
    GDB 2003 Subaru Impreza WRX Stock and Unmolested!
    JZZ20 1988 Soarer GT Twin Turbo
    1JZ-GTE + R154 + LSD | Black Knight Still being Assembled
    JZX90 1993 Mark II Tourer V 1JZ-GTE + A340E | 270rwhp
    Z20Soarer.Org - The definitive resource for all xZ20 Owners.

  7. #7
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    Default Re: MKIII supra swap questions

    Quote Originally Posted by JZA70R_92 View Post
    Thats a front sump so mosy likley from a jzx90 etc. you will need rear sump, jza70 engine mounts or driftmotion mounts, will need to lengthen the ecu wiring etc join up supramaina lots of info
    so JZA70 is rear sump config?

  8. #8
    Junior Member Automotive Encyclopaedia JZA70R_92's Avatar
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    Default Re: MKIII supra swap questions

    yeah JZA70 is mid rear sump can use sump from jzz30
    1992 - JZA70 STOCK - SOLD

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