How Should I Seal My Radiator Shroud? - JeepForum.com
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  • 1 Post By mukluk
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post #1 of 10 Old 08-22-2019, 05:29 PM Thread Starter
joeyroe
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How Should I Seal My Radiator Shroud?

I'm happy with my brass/copper radiator, but I'd like to find a way to seal the gap between the shroud and radiator.
Besides replacing the radiator, does anyone have any ideas (ie: maybe some heat resistant foam trim)??

Thanks in advance.

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post #2 of 10 Old 08-22-2019, 05:51 PM
mukluk
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Quote:
maybe some heat resistant foam trim
That's what the factory uses to seal the gap between the radiator and AC condenser, safe bet it'd work for what you want as well.
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post #3 of 10 Old 08-22-2019, 07:29 PM
SkylinesSuck
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I used whatever foam I found at Home Depot for sealing windows and it has held up fine.
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post #4 of 10 Old 08-22-2019, 07:49 PM Thread Starter
joeyroe
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Thanks for the suggestions! Do you think something like this might work too (trimmed to fit, of course)...?
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post #5 of 10 Old 08-23-2019, 07:20 AM
SkylinesSuck
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I think that won't melt. Not sure how well it would fit in your application but I'm guessing you could make it work.

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post #6 of 10 Old 08-23-2019, 05:18 PM
Jeepsr4me
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At Lowes there is a flat foam tape.. Its about 1/4 to 1/2 inch thick. Pull the shroud and stick that to the edge.
The foam is for areas that get hot so it will work just fine. And seeing as it will be pressed together between the rad and shroud it will not come off.


https://www.lowes.com/pd/M-D-10-ft-x...rstrip/3120621
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post #7 of 10 Old 08-27-2019, 01:17 PM
freedom_in_4low
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it's your Jeep so by all means seal the gap if you want, but I would not expect it to solve any overheating problems if you have them. You're losing way more airflow between the fan shroud and fan impeller blade tips than between the shroud and the radiator.

Joe
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post #8 of 10 Old 08-27-2019, 03:51 PM Thread Starter
joeyroe
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Quote:
Originally Posted by freedom_in_4low View Post
it's your Jeep so by all means seal the gap if you want, but I would not expect it to solve any overheating problems if you have them. You're losing way more airflow between the fan shroud and fan impeller blade tips than between the shroud and the radiator.
Yea, I actually agree, and already ordered a Mopar Radiator. Hopefully it will not only cool better, but also fit my shroud better.
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post #9 of 10 Old 08-27-2019, 03:54 PM
freedom_in_4low
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Quote:
Originally Posted by joeyroe View Post
Yea, I actually agree, and already ordered a Mopar Radiator. Hopefully it will not only cool better, but also fit my shroud better.
Last year, my TJ was getting hot on the highway, after I had done a motor mount lift and moved my shroud to match the fan (so it sat about 1" higher on the radiator than previously, so the bottom 1" of the fins aren't even inside the shroud at all). I spent some time blaming that to no avail but I finally put in a new Mopar radiator and haven't even seen 210 since.
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post #10 of 10 Old 08-29-2019, 04:51 PM Thread Starter
joeyroe
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Update:
Just installed a new Mopar radiator. Shroud fits much tighter now (big difference), and tomorrow I'll test the radiator in the desert
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