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Problem: When Dynoing Coolant Started To Overflow From Resevoir Twice?

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Old Jan 22, 2005 | 06:34 PM
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Default Problem: When Dynoing Coolant Started To Overflow From Resevoir Twice?

When Dynoing Coolant Started To Overflow From Resevoir Twice? What Can Cause This?
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Old Jan 22, 2005 | 06:43 PM
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Originally Posted by SICKBIRD
When Dynoing Coolant Started To Overflow From Resevoir Twice? What Can Cause This?
If the car is NOT overheating my first shot would be to say that the coolant resivour was overfilled to begin with. Should start out at the low mark if the engine is cold. I have noticed on a lot of the cam swaps that we do that if you fill the resv. too full to begin with that it will puke coolant till it levels off at the lower end of the stick.
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Old Jan 22, 2005 | 06:52 PM
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It Wasent Overheating Hope That Was The Problem
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Old Jan 22, 2005 | 07:05 PM
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Well kinda sounds like somthings peresurizing the coolant system.Do you have stock heads?
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Old Jan 22, 2005 | 07:24 PM
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Stock 5.3
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Old Jan 22, 2005 | 07:31 PM
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Did you have any work done prior to dynoing the car? IE heads and cam etc.
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Old Jan 22, 2005 | 07:45 PM
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Did they have fans running for air flow? It wouldn't be unusual for the engine to get hotter than normal, but overheating, if they were not running fans.
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Old Jan 23, 2005 | 09:57 AM
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i dont think they had fans
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Old Jan 23, 2005 | 10:02 AM
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Check the thermostat. It sounds like its not opening when it should. I've had this problem before on other cars.
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Old Jan 23, 2005 | 10:51 AM
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make sure the coolant lines that go from the tb to the radiator arent reversed
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Old Jan 23, 2005 | 09:24 PM
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blowed head gasket will put build compression in the cooling system
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Old Jan 23, 2005 | 09:42 PM
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Originally Posted by Full-Force
blowed head gasket will put build compression in the cooling system
Yep. Did you use new gaskets and head bolts when you replaced the heads? Also could be a air pocket in there, or like someone else said the thermostat not functioning properly. Check the thermo and burp it, then check the head gaskets. Good luck.
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Old Jan 24, 2005 | 01:40 AM
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Originally Posted by Full-Force
blown head gasket will put build compression in the cooling system

correcto
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Old Jan 24, 2005 | 01:58 AM
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mine did that with my first aftermarket resevoir cause it did not have a return pipe so It would fill up the resevoir and once full just spit it out the top when the car got hot . I'm assuming you still have the stocker so is the fluid going up and down in the resevoir? should be down when cold and full when hot. Or is it always full?
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