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Forced Induction Turbo, Supercharger, Methanol, Nitrous |
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02-17-2021, 03:06 PM | #15 |
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Harrop does this for their time attack car. I’m guessing the side area is used for brake vents.
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02-17-2021, 04:44 PM | #16 |
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doesn't look like a street car so... i bet they don't even have the AC cooler
For the street and occasional track i d prefer to put oil cooler on the side and leave the intercooler free |
02-17-2021, 05:00 PM | #17 | |
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Will be adding some air ducting at the fog lights and copying @86TOYO2k17 with his louver vent things on the fender liner/wheel well. |
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02-17-2021, 05:45 PM | #18 | |
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As you know, the Supra’s bumper has places where they blocked off the opening, saying that there was too much cooling. Several cars have active, bumper louvers to avoid overcooling along with helping with aerodynamics, so again, I’m just curious if this is going to be an actual problem for the OP.
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02-17-2021, 07:59 PM | #19 |
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[QUOTE=Irace86.2.0;3407372]I get the question, but I question the problem. Of course we can discuss a hypothetical problem and find solutions to potential issues. It is helpful to know the goals and driving conditions for a more accurate, tailored answer. There are people with turbo kits without any cooling issues for their needs where the oil cooler is in front of an intercooler that is in front of a AC cooler that is in front of a radiator or even ones running no oil cooler.
As you know, the Supra’s bumper has places where they blocked off the opening, saying that there was too much cooling. Several cars have active, bumper louvers to avoid overcooling along with helping with aerodynamics, so again, I’m just curious if this is going to be an actual problem for the OP. "Overcooling"?? Is there any conceivable fluid that could possibly be overcooled simply by airflow? If so, which and under what conditions might they be plausible/possible? |
02-17-2021, 08:04 PM | #20 | ||
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02-17-2021, 08:06 PM | #21 | |
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The supra ultimately ended up with more cooling than needed, so the bumper openings were blocked to increase fuel economy numbers. It's not "overcooled" at all. That's what thermostats are for. Put a thermocouple behind an oil cooler, and look at the air temp post-cooler. Also put thermocouples in an intercooler inlet and outlet, and observe the temperatures. The evidence is universally damning. Some people also don't have cooling issues with the Hellcat. Have you ever seen the heat exchanger on a hellcat? It all comes down to what you do with the car. If you street drive and occasionally do a 10 second pull, you won't overheat, but an oil cooler in front of an intercooler will ALWAYS hurt power. It's just physics. |
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02-17-2021, 08:10 PM | #22 | |
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Overcooling a car? Nah, that's what thermostats are for. |
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02-17-2021, 08:54 PM | #23 | |
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[QUOTE=czellers;3407409]
Quote:
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02-17-2021, 10:30 PM | #24 | |
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Considering radiators and intercoolers are often much taller than the bumper openings, and they are thus blocked from any significant air flow, it seems like stacking a cooler might not be a big deal, especially when size often can trump being behind dirty air, as might be the case for SMIC versus FMIC, or where there is a compromise between air flow and ducting to brakes versus an oil cooler or SMIC. I think there is still a case for determining what are the OP’s needs, if not for avoiding overcooling because that isn’t a thing, then more for not doing anything that is overkill like purchasing things that aren’t necessary or putting work into designing/fabricating a solution for a problem that may not exist.
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02-17-2021, 11:34 PM | #25 | |
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1. everything closed, circulate within engine only. This is to warm the engine up as quickly as possible to minimize emissions. 2. heater core only. For comfort. In typical california conditions, the heater will be warm within 25-30 seconds in such cars. 3. low flow. For economy. Regulates coolant temp to about 105C. 4. Max cooling. Typically regulates coolant temp to a floor of 85C. Many folks going into a supra complained that their cars were running hot/overheating when they saw 105-108C cruising, not realizing.... that's how all modern euro cars are, whether its a Supra, BMW, Porsche, Merc, or Audi. Even basic VWs do this. Why do most 86's "overcool the oil"? Because people just don't seem to be able to get it into their heads that the oil temp observed is post-cooler. And the thermostatic plates are very basic. Cooling is an equilibrium problem. A hot oil cooler in front of an intercooler, even if the intercooler is much larger, hurts efficiency. |
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02-18-2021, 12:37 PM | #26 | |
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It might hurt the efficiency of maximizing the cooling effect of the intercooler, but by how much does it make a difference? Measure temperature drops across the intercooler before and after in a variety of situations, and I am curious if the difference is significant. I'm just thinking of radiators that are higher than the openings, intercoolers that are higher, rally cars with little openings or huge off-road lights and light bars across the front bumper, etc and how that seemed to work. Again, I agree about the fundamental efficiency/physics argument, but I question the relevant impact.
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02-18-2021, 03:50 PM | #27 |
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02-18-2021, 04:09 PM | #28 |
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Dirty coolers are worse than smaller openings. Rally cars need their coolers protected.
Again, widen your scope. What happens if mud gets on a cooler? |
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