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Old 03-10-2008, 02:44 AM   #1
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Default radiator caps... any truth?

Alright, i just read on flyin miata that increasing the psi of your cap will increase flow through your system? they sell a 22-24psi cap, I have a 13psi cap... any thoughts? or truth?
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Old 03-10-2008, 08:58 AM   #2
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Don't think it will increase flow, but what it will do allow the temperature to increase more before letting coolant get out to the reservoir. This could give you that little extra margin if you are right at the overheating point.
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Old 03-10-2008, 09:03 AM   #3
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But be careful. If the condition of your cooling system leaves something to be desired, increasing the pressure may show you the weak points, if you know what I mean
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Old 03-10-2008, 10:08 AM   #4
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Old 03-10-2008, 11:26 AM   #5
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I was curious about this same thing....had no idea and felt stupid asking. So thanks!

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Old 03-10-2008, 07:25 PM   #6
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Raising the pressure of a liquid also raises its boiling point.. Or something like that anyway
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