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Old 04-11-2021, 02:07 PM #1
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Radiator support foam?

What's the foam on the front side of the rad support intended to do?
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Old 04-11-2021, 02:09 PM #2
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Create rust....lol


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Old 04-11-2021, 02:27 PM #3
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Quote:
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Create rust....lol


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That was my first thought, doesn't appear to be doing anything else.
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Old 04-11-2021, 02:47 PM #4
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My guess is it does two things, the foam acts like a gasket helping to direct more air thru the radiator for greater efficiency & acting as anti vibration/sound damping. And, as an unfortunate consequence, retains moisture.
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Old 04-11-2021, 05:28 PM #5
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I believe they are for forcing as much air through the radiator as possible when in high load conditions, moving on the road. Stuck in traffic with the hydraulic fan drive thing* on full blast too. (*The 1980’s gizom connected to the fan)

I took the bottom portion off last week during an oil change. The sticky tape is the hardest part. I Fluid Film’ed the support it was stuck to. No rust was found. There is a right and a left part that I will remove next time. I Fluid Film’ed them.
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