Toobuilder
Well Known Member
I think toobuilder was referring to radiation from the heads to the cooler face - per the view factor, not preheated secondary air. He seems pretty savvy about these things. I would also think it to be small/irrelevant.
I did put a short wrap over the end of the head fins to prevent flow through to the cooler. Don't know if it works yet.
Yep. That's it. The baffle is primarily for localized airflow management for the head.
However, as long as there is a differential in temperature between the head fins and the oil cooler there will be radiant transfer. This differential is not nearly as great as the delta between the exhaust pipe and the throttle cable for example, but the little scrap of .020 aluminum used as a radiant barier to keep the throttle alive is just as effective in both instances.
The point is, a high efficiency cooling scheme is a game of inches. Once the big things are covered, we really need to pay attention to the details and take a win whenever we can.
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