383 running hot need help

Discussion in 'Engine Topic' started by 81camarojwm, Aug 28, 2014.

  1. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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  2. 81camarojwm

    81camarojwm Member

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    thats my exact radiator
     
  3. 81camarojwm

    81camarojwm Member

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  4. onovakind67

    onovakind67 Veteran Member

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    You need more pump. Lose the thermostat and see if the increased flow helps.
     
  5. 81camarojwm

    81camarojwm Member

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    i have A 50 GPH FLOW PUMP. 35 gph is stock. flow is not my problem. i even put a restrictor in line and that helped a lil
     
  6. kain13

    kain13 Veteran Member

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  7. onovakind67

    onovakind67 Veteran Member

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    Restricting the flow is the worst thing you can do. The water side of your radiator is the same as the air side, flow is king. You wouldn't restrict the flow of air in an attempt to make it run cooler.
     
  8. 81camarojwm

    81camarojwm Member

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    To much flow does not allow the water to pull the heat off the block or dissipate heat thru the radiator
     
  9. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    We ran into this issue when I was in plastic blow molding. We oversized the pumps and found out it got us into turbulent flow and decreased our cooling capacity.
     
  10. onovakind67

    onovakind67 Veteran Member

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    No it doesn't. A radiator is not a water cooler, it is a heat dissipator. It is most efficient when it is as hot as you can make it by pumping as much water as possible through it. Why do you suppose a thermostat opens up when you want to cool the engine, and closes up when you want it to run hotter?

    Here is some very good info on cooling from people in the engine cooling business:

    http://www.arrowheadradiator.com/14...apability_in_high-performance_automobiles.htm

    - IMPROVEMENT RULE # 1 -

    Anything you can do to increase the coolant flow rate, within limits described, will improve heat transfer and cooling performance. Anything you do to restrict or reduce the coolant flow rate will hurt cooling performance
     

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