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Old 06-23-2020, 09:26 PM   #31 (permalink)
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Now that I think about it, I wonder if Honda may have designed the radiator support to have gaps on the sides for a reason such as to allow fresh air into the engine compartment to cool the transmission or oil pan. I'm not worried about it since I have nice engine and transmission oil coolers and my temps are always good, I watch coolant temp on my Scangauge and I have gauges for transmission and oil temp, I'm just curious. I think it's more likely that the gaps are just there since this is a mass produced economy car and not an F1 car, but something to think about.

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Old 06-24-2020, 10:12 AM   #32 (permalink)
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I think perhaps you are attaching too much to what appears to be sloppy engineering of a osfa mount.
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Old 06-24-2020, 06:32 PM   #33 (permalink)
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Quote:
Originally Posted by EcoCivic View Post
I wonder if Honda may have designed the radiator support to have gaps on the sides for a reason such as to allow fresh air into the engine compartment to cool the transmission or oil pan. I'm not worried about it since I have nice engine and transmission oil coolers and my temps are always good, I watch coolant temp on my Scangauge and I have gauges for transmission and oil temp, I'm just curious.
It would depend on how the air flows through the engine bay, but I wouldn't hold my breath for it to lead to any improve on transmission and oil pan cooling. Unless the transmission case and oil sump had fins like the air-cooled engines.
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Old 06-24-2020, 06:45 PM   #34 (permalink)
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Quote:
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It would depend on how the air flows through the engine bay, but I wouldn't hold my breath for it to lead to any improve on transmission and oil pan cooling. Unless the transmission case and oil sump had fins like the air-cooled engines.
Neither has fins. I was just wondering if Honda may have intentionally left gaps on the side for a reason, but I don't think the gaps were intentional and I don't think they do anything positive. I didn't notice any increase in trans temp, oil temp, or intake air temp since I sealed them off, but like I said I have nice coolers for my engine and transmission oil and I put my air filter in its own heat shield box to keep heat off of it so I wouldn't expect to see any differences in any of these areas. Not sure how any of these areas would have been affected in stock form.
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Old 06-24-2020, 06:51 PM   #35 (permalink)
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I was just wondering if Honda may have intentionally left gaps on the side for a reason
Presumably the cost of filling those gaps
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Old 07-07-2020, 02:20 PM   #36 (permalink)
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I finally mostly finished my radiator ducting and reinstalled the bumper cover. What I did is I cut sheets of plastic out of an old storage bin I had and cut them to fit tightly between the radiator support, bumper bar, and bumper cover, which was actually a huge pain since it needed to be cut pretty precisely to fit tightly enough to stay in place without being so tight it bends or breaks, but I got it done. I still need to use some Gorilla tape to seal the little gaps and some expanding foam to fill in the ends of the hollow bumper support bar so air can’t escape through there. I also need to get a piece of foam to seal the top of the upper grill to the top of the radiator so air doesn’t go over the radiator. This solution certainly isn’t sophisticated, but it should be effective. I feel pretty confident that I now have a more effective cooling system that creates less drag than it otherwise would have. I’m also moving my trans cooler to the back so it isn’t blocking and preheating the airflow to the condenser and the radiator.

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