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> Delete Heat, What can I take out?
BPic
post Dec 28 2019, 12:55 PM
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I'm getting my engine ready for install and since I won't have heat, headers and no tubes in longs, what should I shouldn't I leave or bock off on the engine? Do I remove the flaps on the fan cowl? Bolch the holes at the bottom of the fan cowl? Remove the controller that moves the flaps? (IMG:style_emoticons/default/confused24.gif)
This is a 2056 with Carbs..

Thanks,

Brad
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bbrock
post Dec 29 2019, 10:30 AM
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I don't know much about fluid dynamics but I'm not sure cooling efficiency is determined solely by volume of air. IIRC, a laminar flow of air across a hot surface will transfer heat more efficiently than turbulent air. If that's correct, I could see where bleeding off a bit of air to reduce pressure flowing across heads might be a benefit.

I'm not arguing for or against blocking the outlets because I'm not qualified. I'm just suggesting there might be more to the equation than air volume. It does make me wonder why the heater flapper valves were designed to dump air through those outlets regardless of whether you were calling for heat inside the car. Seems like it would have been cheaper to design those flappers to just block air flow when heat was not needed in the cabin.

It would be interesting to see a comparison of head and oil temps with those outlets blocked vs. open. That would be more definitive than any theoretical benefits of one configuration or the other.
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