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can anyone educate me on waterpumps

Discussion in 'The Garage' started by m j, Nov 21, 2004.

  1. m j

    m j 1/2 ton status

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    Time to replace the pump.
    any reason to look at aluminum?
    any year or model have advantages?
    I am not sure what I have on there now but I know the clutch fans I have on hand (1981) did not match the mounting pattern but I cannot recall why it didnt bolt up.
    any help or swapping secrets appreciated

    thanks
     
  2. TrcksR4ME

    TrcksR4ME 1/2 ton status

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    stock always worked fine
    for me

    if you want to upgrade
    maybe swap a ford motor in /forums/images/graemlins/wink.gif
     
  3. txfiremank5

    txfiremank5 1/2 ton status

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    You might check out the marine water pumps. They're supposed to be built a lot better. I'm sure they come with a price though. /forums/images/graemlins/thinking.gif
     
  4. 84_Chevy_K10

    84_Chevy_K10 Banned

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    A water pump is a water pump...just get a new one.

    Aluminum doesn't rust. /forums/images/graemlins/rotfl.gif
     
  5. m j

    m j 1/2 ton status

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    anyone ever just rebuild one?
    isnt it just a bearing and a few seals?
     
  6. m j

    m j 1/2 ton status

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    if I go bigblock it is getting a Ford
    I wanna see what it takes to split the sbc with the turbo first
     
  7. 84_Chevy_K10

    84_Chevy_K10 Banned

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    I would get a new one.
     
  8. 85burbanator

    85burbanator 1/2 ton status

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    some water pumps you can. you just buy the internals and replace it. thats how they remanufacture them i think. unless they do it a different way.
     
  9. mr_beer

    mr_beer 1/2 ton status

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    Yea pumps are cheap, I'd get a new one too so you wouldn't have to worry about over heating. Engines aren't cheap /forums/images/graemlins/yikes.gif
     
  10. m j

    m j 1/2 ton status

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    "new" vs rebuilt or just grab a rebuilt?
    I like the cast one as everything (except my van ps pump) seems to mount to the water pump on my SBC, cheap too

    thanks guys
     
  11. txfiremank5

    txfiremank5 1/2 ton status

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    [ QUOTE ]
    A water pump is a water pump...just get a new one.

    Aluminum doesn't rust. /forums/images/graemlins/rotfl.gif

    [/ QUOTE ]

    Marine pumps have bronze impellers & a stainless steel back plate, I believe they also have ceramic bearings, they are also bi-directional... so, no, a water pump is not a water pump. I have seen them on ebay for pretty cheap, and they're usually for SBC.

    Don't know if mj is looking for better performance, or just built to last? /forums/images/graemlins/dunno.gif
     
  12. dyeager535

    dyeager535 1 ton status Premium Member

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    Only people I know of that have gone through this, are Olds folks, although it is at least a GM product.

    They found that the impeller can be different (overall size, fin count) based on vehicle or options, and that the GMB aluminum pumps seemed to be designed to move more water, efficiently, than the stock stuff.

    An anti cavitation plate is part of GMB's setup as well, from what I could tell.

    I don't see how moving more water when needed, can do anything but help.

    www.corvettefever.com might have their water pump rebuild article online. For a stock non-collector setup, I'd just buy a new one though as opposed to rebuilding. Weren't worth the time/parts compared to a $25 or so rebuilt one.
     
  13. m j

    m j 1/2 ton status

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    I know some Ford racers cut the water pump impeller down quite a ways to reduce engine drag.
    I havent had a over heating problem yet but there is some strange sounds coming from the front of the sbc
    do not recall the age of the water pump so it is getting changed when I do the rad.

    what years had studs instead of bolts to retain the pulley/fan?
     
  14. cybrfire

    cybrfire 1 ton status Vendor GMOTM Winner

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    If I were to buy a waterpump for a SBC today I'd buy an aluminum pump. Price for aluminum versus the factor reman stuff isn't out of line. I'd also buy an impeller backing plate at the same time and who knows maybe you can find an aluminum pump that already has an impeller plate on it. I'd also think the aluminum might scavenge a few degrees for you as well.
     
  15. 84_Chevy_K10

    84_Chevy_K10 Banned

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    [ QUOTE ]
    what years had studs instead of bolts to retain the pulley/fan?

    [/ QUOTE ]

    All of mine have had studs.
     
  16. m j

    m j 1/2 ton status

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    so parts whiz, what year did that change over
    I think it was the studs and the differing size of the shaft that prevented me from using a newer clutchfan.
    what year pump do I need to order
    more 'easy, chevy, everything swaps' but it aint so
     
  17. bigblock44k5

    bigblock44k5 1/2 ton status

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    19.99 for a reman pump. Stock pump should cool more than you need. Enough said.
     

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