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Thread: Brainstorm-2nd water pump

  1. #1
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    Default Brainstorm-2nd water pump


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    hey guys today my slivertop 20valve 4age shat another water pump this afternoon only installed my other one bout 3months ago( thank god still under warranty) it has cracked in the exact same spot which leads me to believe i have a underlining problem
    this is were it cracked
    Click image for larger version. 

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    want to know
    A is this a common problem?
    B any ideas has to whats causing it??

    im thinking either the pump is flexing from the vast amount of engine vibration which my has a lot of due to tuning issues when cold...
    or its my fan ( which i intend to get rid of in place of new rad and twin thermo setup)

    this water pump was not a genuine toyota one either was a cheap brand but getting a new toyota one ordering it 2moro

    any help i would be grateful
    cheers

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    Senior Member julzy's Avatar
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    Had the same problem with my 16v,
    replaced the standard viscous fan with thermo.
    Havent broken a waterpump since.
    Its because the stando fan isnt balalnced properly.
    Quote Originally Posted by resol View Post
    i slide 3rd gear corners in the dry on the street, and 100km/h entry's.

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    Senior Member Sprinter86's Avatar
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    and just to add to that julzy, i beleive any FWD waterpump isnt built to run a fan, from what ive read, the rwd waterpump has extra strength and an extra bearing to cope with the weight.

    makes sense, bottomline, do the thermo conversion!

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    ok sweet has was goin to go twin thermo set up in a couple of months has well lol
    do you just run the water pump without the pulley just like it is in the photo??

    also how have you set up your thermos... low/high range temp sensors or just turn on at certain temp then off at a temp??

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    Senior Member Roo.'s Avatar
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    you need the pulley on it to work

    as for thermos you buy a controller and set the temp for it to on then off when it get below that

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    Senior Member Sprinter86's Avatar
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    how have you run your thermostat? are you using a FWD external-style thermostat? if so, it has a factory inbuilt sensor that you can use to switch a relay to turn the fans on/off.

    i'd be happy to draw up a diagram for you if you like.

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    Mines done on relay,
    think its about 85ish degrees,
    only run a single 12" thermo with a triple core radiator,
    has never ever got hot,
    (even with towing jetski, 44degrees and a/c on)
    Quote Originally Posted by resol View Post
    i slide 3rd gear corners in the dry on the street, and 100km/h entry's.

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    Senior Member *E7*'s Avatar
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    go electric davies craig water pump.

    no power drain from motor.

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    Quote Originally Posted by Sprinter86 View Post
    rwd waterpump has extra strength and an extra bearing to cope with the weight.
    Bingo, don't ever try to run a clutched fan off a FWD water pump, the housing will usually crack within a few months as the bearings collapse from the load.

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    For running thermos, I picked up a hyundai excel radiator on the weekend, it has the temp switch in the radiator tank.... no controller required (only a relay for power)

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