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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Overheating after SVC intercooler?
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<blockquote data-quote="nikhsub1" data-source="post: 1494045" data-attributes="member: 22952"><p>First of all, all FMICs for this truck are nowhere near 3.5 inches thick. The IC that I have which is full race, the fin density is not very dense - this is a good thing for airflow through the unit. The air out of the IC is not nearly as hot as you guys think. Like I've said before in this thread and other places stacking heat exchangers is not as detrimental as a lot of you think, many OEMs do this from the factory with no issue. Also, another point I will make is that thickness is probably the least important dimension of the intercooler. Meaning thicker is not better than being TALLER. Overall surface area does matter but if you think in terms of efficiency, the intercooler is THE MOST EFFICIENT when the temp differential is the greatest. When is this? Well I'll tell you! It's the MOMENT the hot air enters the IC. As the hot air moves across the IC, the IC becomes less and less efficient. Why? Because the IC is cooling the air, as the air is cooled in the IC that temp differential drops. Conversely, at the EXIT of the intercooler, the intercooler is the LEAST efficient.</p><p></p><p>Why did I just explain this shit? Well, if you now take that into context you will see why the FMIC is far more efficient that an OEM replacement. Why? Well, it goes back to efficiency and surface area. If you mark off the FIRST INCH of the fins of your IC, and multiply that by the HEIGHT of the intercooler you will get a number - the higher the number the better. Why? That is the AREA that is most efficient since it is at the inlet of the intercooler. All things being equal, with side inlets on the intercooler (like our intercooler) height is the more important dimension than thickness or width.</p></blockquote><p></p>
[QUOTE="nikhsub1, post: 1494045, member: 22952"] First of all, all FMICs for this truck are nowhere near 3.5 inches thick. The IC that I have which is full race, the fin density is not very dense - this is a good thing for airflow through the unit. The air out of the IC is not nearly as hot as you guys think. Like I've said before in this thread and other places stacking heat exchangers is not as detrimental as a lot of you think, many OEMs do this from the factory with no issue. Also, another point I will make is that thickness is probably the least important dimension of the intercooler. Meaning thicker is not better than being TALLER. Overall surface area does matter but if you think in terms of efficiency, the intercooler is THE MOST EFFICIENT when the temp differential is the greatest. When is this? Well I'll tell you! It's the MOMENT the hot air enters the IC. As the hot air moves across the IC, the IC becomes less and less efficient. Why? Because the IC is cooling the air, as the air is cooled in the IC that temp differential drops. Conversely, at the EXIT of the intercooler, the intercooler is the LEAST efficient. Why did I just explain this shit? Well, if you now take that into context you will see why the FMIC is far more efficient that an OEM replacement. Why? Well, it goes back to efficiency and surface area. If you mark off the FIRST INCH of the fins of your IC, and multiply that by the HEIGHT of the intercooler you will get a number - the higher the number the better. Why? That is the AREA that is most efficient since it is at the inlet of the intercooler. All things being equal, with side inlets on the intercooler (like our intercooler) height is the more important dimension than thickness or width. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford Raptor Engine Discussion and Performance Mods
Overheating after SVC intercooler?
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