Radiator Cooling suggestions

j-rho · 01-29-2015, 06:06 PM

You're making a lot of the right moves - distilled water + water wetter, and relocation of the auxillary coolers to the sides.

Fans are needed for the street and low speeds but on track they are restricting airflow/cooling. This is one area where the compromise of a street/track car comes into play.

If you still have an AC condensor in there, removing it (or getting a radiator without one integrated) will help.

You want the hood vent to open in the lowest pressure areas over the hood - and you also want a nice easy/smooth path for the air on the back side of the radiator to make it out that vent. Seems like from the factory the back of the radiator/fans are right up against the front of the motor. If you can lean the top of the radiator forward, and duct the backside up to the vent(s), should help. This is how it's done from the factory on Corvettes and Vipers. Another hood vent laterally in the middle, roughly aligned longitudinally with your forward-most existing vents, should give the hot post-radiator air the easiest path out.

Your boost cooler thing is pretty big and eating up all the prime airflow surface area. Some of the balancing act here may be giving up a little bit of that optimization (smaller size, or a more out-of the-way placement) for better coolant cooling. Since those are liquid lines and more line volume doesn't affect boost response (the way an air-air IC does) you might consider trying to place that whole thing somewhere way out back under the car.

Last thought would be increasing area inbound to the coolers with some holes in the yellow portion of the nose above the bumper beam (along with maybe trimming/removing the bumper beam) to allow for direct flow to the upper half of the radiator.

The factory has a lot of shrouding to direct all incoming air through the coolers - through your extent of mods, ensure you are taking steps to ensure you continue this practice. Air will take the easiest path to lower pressure, which will only be through a stack of coolers if you force it to be.

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01-29-2015, 06:06 PM	#11 (permalink)
j-rho Base Member Join Date: Jul 2014 Location: San Diego Posts: 154 Drives: 1967 Camaro Z28 Rep Power: 10	You're making a lot of the right moves - distilled water + water wetter, and relocation of the auxillary coolers to the sides. Fans are needed for the street and low speeds but on track they are restricting airflow/cooling. This is one area where the compromise of a street/track car comes into play. If you still have an AC condensor in there, removing it (or getting a radiator without one integrated) will help. You want the hood vent to open in the lowest pressure areas over the hood - and you also want a nice easy/smooth path for the air on the back side of the radiator to make it out that vent. Seems like from the factory the back of the radiator/fans are right up against the front of the motor. If you can lean the top of the radiator forward, and duct the backside up to the vent(s), should help. This is how it's done from the factory on Corvettes and Vipers. Another hood vent laterally in the middle, roughly aligned longitudinally with your forward-most existing vents, should give the hot post-radiator air the easiest path out. Your boost cooler thing is pretty big and eating up all the prime airflow surface area. Some of the balancing act here may be giving up a little bit of that optimization (smaller size, or a more out-of the-way placement) for better coolant cooling. Since those are liquid lines and more line volume doesn't affect boost response (the way an air-air IC does) you might consider trying to place that whole thing somewhere way out back under the car. Last thought would be increasing area inbound to the coolers with some holes in the yellow portion of the nose above the bumper beam (along with maybe trimming/removing the bumper beam) to allow for direct flow to the upper half of the radiator. The factory has a lot of shrouding to direct all incoming air through the coolers - through your extent of mods, ensure you are taking steps to ensure you continue this practice. Air will take the easiest path to lower pressure, which will only be through a stack of coolers if you force it to be.