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Retaining waterflow to core

Discussion in 'The Garage' started by fireplug, Apr 15, 2007.

  1. fireplug

    fireplug 1/2 ton status

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    I posted up about the Fluidyne rad I picked up cheap a week ago. Well I really bought it based on the size only, and had a buddy that lived close pick it up for me.

    Well neither of us noticed for days, that it doesn't have the fitting for the heater core. Living in Canada, running without heat is not an option.

    Can I just plumb the heater core from the pump and or manifold? Are there fittings made for this application?

    Any ideas? Or am I reselling this thing?
     
  2. 4xcrazy

    4xcrazy 3/4 ton status

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    yup, one off the pump, one on the manifold, it's a secondary setup that can be used, that's the way my 76 Nova was setup, and worked fine.

    Haven't messed with it in some time, some will chime in and correct me if i am wrong,,,,they always do :doah: , but i believe the pump is the return line, and the one on the intake is the "feed"
     
  3. fireplug

    fireplug 1/2 ton status

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    Cool! That's good news, I really want to use this thing.

    I'll have to snoop around some catalogues and see what is available.

    Any other insight is welcomed!
     
  4. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    You could always have someone tig weld a fitting on the tank for you and use it as original.
     
  5. fireplug

    fireplug 1/2 ton status

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    True enough. At that point though, I'll just dump it. Should be easy to recoup my cash, and get an application specific rad.
     
  6. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    There is nothing wrong with using the waterpump and intake manifold fittings. That is how all the GM cars are set up and about half the trucks as well.
     
  7. fireplug

    fireplug 1/2 ton status

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    What is the idea of having them routed to the rad at all then?
     
  8. 4X4HIGH

    4X4HIGH 1 ton status Premium Member GMOTM Winner

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    I have no definative answer but it doesn't matter where it returns to really.
     
  9. sled_dog

    sled_dog 1 ton status

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    My 84 K5 was setup with heater hoses going to the manifold and waterpump.

    [​IMG]

    See on top of the waterpump(sorry its black and hard to see) there is a fitting there for the one heater hose.
     
  10. sled_dog

    sled_dog 1 ton status

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    My 84 went to the water pump. My 89 went to the radiator. Pretty certain the 89 had to because of the big brackets for the serpentine setup, hose routing would have been stupid.
     
  11. fireplug

    fireplug 1/2 ton status

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    Ok great, thanks. Now I checked out my summit catalogue and it didn't have anything. What would the connection at the manifold consist of?

    And just to clarify, the route is manifold to heater core to water pump?
     
  12. sled_dog

    sled_dog 1 ton status

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    yes. manifold connection would be the same as it is now, no need to change.
     
  13. fireplug

    fireplug 1/2 ton status

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    Awesome! Thanks everyone!
     
  14. ntsqd

    ntsqd 1/2 ton status

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    If your intake has the port(s), pulling the heater water off the back of the cyl head seemed to get warm faster than off the front, at least on the one vehicle I've tried that way.
     
  15. fireplug

    fireplug 1/2 ton status

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    Interesting...
     
  16. sled_dog

    sled_dog 1 ton status

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    that is the way the factory application is setup if I remember correctly... Think on my 89 where it returned to the radiator, the inlet to the heatercore pulled off of the back of the manifold. Where as on my 84 where it returned to the water pump, the inlet to the heatercore was off of the front of the intake.
     
  17. fireplug

    fireplug 1/2 ton status

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    I've been going off of memory because my truck is not with me. I was confusing my '89 TBI 350 Sub with the truck in question, my Blazer which is a carb'd '76 350.

    I was looking at it today, and the Blazer heater core is connected to the front of the manifold, and the water pump of course.
     

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