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      09-23-2007, 03:37 AM   #19
bnj
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Drives: e92 335i
Join Date: Nov 2006
Location: Helsinki

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Quote:
Originally Posted by Cadillac Johnson View Post
Sorry, but that's a terrible design.

Increasing the thickness really does nothing for cooling. All this intercooler looks like it will do is increase lag and add weight.

The second half of any core (thickness) does only 1/4 of the work of cooling the charge air. Adding thickness to the core does improve efficiency, but the gains are less and less as the core gets thicker, and the downside is that it becomes harder to get the air to pass through the core. Since the same (or lesser) volume of (cooling) air passes through the core, the air first contacts and transfers heat out of the front of the intercooler, and thus is hotter by the time it reaches the back half of the intercooler's thickness, and has less (or no) capacity to absorb out additional heat from the intercooler. It also moves more slowly through the core due to the increased thickness, compared to a 3" or 3.5" thick core.
How much is the frontal area and thickness increased compared to stock? I think your assumption about the changes in the dimensions are wrong.
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