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Thread: 1JZ water pump upgrade

  1. #1
    Forum Member 1st year Apprentice
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    Default 1JZ water pump upgrade

    Hi All,
    This is my first post so here we go. My son recently purchased a mx83 with a 1JZ GTE in it. As always with second hand cars something went wrong in the first week. The water pump sh*t itself, after much Googling etc I am now 1/2 way through a water pump upgrade. So here's my question......Do I need a 2JZ fan/serpentine belt?, and does anyone have a cheap 2JZ water pump pulley to sell me? Toyota want a small fortune for it.
    Thanks

  2. #2
    Estranged Member Chief Engine Builder mullett's Avatar
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    Default Re: 1JZ water pump upgrade

    dude

    Buy a kit new from ebay US. Much cheaper! Do timing belt etc while you're there.

    -RM

  3. #3
    dont work in my backyard Domestic Engineer pandaah's Avatar
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    Default Re: 1JZ water pump upgrade

    you need the following from a jzz30 or jza80

    - front water pump housing (non hydro)
    - water pump pulley.. less than 100 from amayama if i recall
    - 6pk 1940 drive belt

  4. #4
    Forum Member 1st year Apprentice
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    Default Re: 1JZ water pump upgrade

    I got my pump from Toyota which included front and rear housings and all seals for 190
    Got a pulley of a 1jz soarer from the local wreckers and use the belt as mentioned above

    Would highly recommend doing the timming belt, crank seal and cams seals as the timming belt needs to come off anyway

  5. #5
    Forum Member 1st year Apprentice
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    Default Re: 1JZ water pump upgrade

    I plan on doing the crank seal belt is only 20k old so it wont be replaced and the cams have no sign of leaking so they are stayin as well (if it aint broke dont fix it). I bought the pump from penrith Toyota and by the sounds of it I got touched a little it was $300 but its still way cheaper then the hydro unit.

    Thanks Pandaah for the belt size I'll try to scam one through work.

    Still after a pulley does anyone have one goin cheapish??????

  6. #6
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    Default Re: 1JZ water pump upgrade

    driftmotion.com has them crazy cheap for the alloy pulley set.

  7. #7
    Junior Member Grease Monkey
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    Default Re: 1JZ water pump upgrade

    Quote Originally Posted by pando666 View Post
    belt is only 20k old so it wont be replaced
    Better man than me Gungadin. Those are some brave last words.
    Cam belt comes off, a new one goes on, Golden rule.
    Owen.

  8. #8
    Forum Member 1st year Apprentice
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    Default Re: 1JZ water pump upgrade

    Better man than me Gungadin. Those are some brave last words.
    Cam belt comes off, a new one goes on, Golden rule.
    Owen.

    If we all worked on the proviso that if you remove it replace it why dont I just replace the cam belt and the hydraulic tensioner and the tensioner pulley both cam seals crank seal serp belt etc etc. I dont know about you but I am not a millionaire. The belt is a gates blue racing belt it $150 and its only had 1/5 of its life so It goes back on. I think it is still a way better belt ,1/5 used, than an original toyota belt. If It was a bog standard belt I would have replaced it.

  9. #9
    Junior Member Grease Monkey
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    Default Re: 1JZ water pump upgrade

    Not a fan of gates belt,toyota always for me, yes no help I know hahaha

  10. #10
    Junior Member Carport Converter Z2TT's Avatar
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    Default Re: 1JZ water pump upgrade

    Don't go replacing seals if they don't leak.

    I have a water pump pulley to sell to you if you want.

    You need JZZ30 2.5L TURBO water pump or 3.0L JZA80 TURBO water pump,
    do not get non turbo pump.

    If you have JZA70 water pump setup, you need both front and rear water pump housing,
    because jzz30 or jza80 turbo front housing will not fit.

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