NSW Underdrive Water Pump Pulley

Discussion in 'Wanted' started by Shane001, Nov 8, 2018.

  1. Shane001

    Shane001 Well-Known Member

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    Anyone got an underdrive water pump pulley they're not currently using that I could borrow for a month?
    Or one for sale cheap?

    I want to test slowing down the water pump at my next test day, see if this has any affect on coolant temps.

    And/or does anyone know any oem alternatives that bolt straight on with the correct alignment?
     
  2. rob260

    rob260 Moderator Staff Member

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    Use a stock GTR pulley
     
  3. Shane001

    Shane001 Well-Known Member

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    Cool, any idea the difference in diameter? I figure there will be plenty that will bolt straight on.
    Now just need to get one.
     
  4. Shane001

    Shane001 Well-Known Member

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    This is bordering on a tech post lol.
    So is the GTR pulley bigger than the 300ZX pulley? (for under drive needs to be bigger).
    Apparently RB20/25/26 pulleys are bigger than VL/RB30.
     
  5. rob260

    rob260 Moderator Staff Member

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    Not sure of difference in diameter but definitely bigger. It worked so well in my car I gave it to @MagicMike -he might be able to measure it when he gets the tag.
     
  6. Shane001

    Shane001 Well-Known Member

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    Ah OK so you've used one yourself :)

    Excellent, will ring around tomorrow and see if I can pick one up on the weekend.

    Thanks Rob :)
     
  7. Shane001

    Shane001 Well-Known Member

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  8. Shane001

    Shane001 Well-Known Member

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    VG30DETT is 120mm diameter
     
  9. MagicMike

    MagicMike Mod and Event Coord [QLD] Staff Member

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    I'll see if I can find it on the weekend. Can't remember exactly which one I have on the engine at the moment.
     

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