CAMARO6 - View Single Post - Kong Performance LT4 High Flow Water Manifold

Patriot Motorsports USA · 07-21-2025, 08:27 PM

Porting the water passages is cool to have a better fitting crossover, but unless the flow restriction of the actual bricks is eliminated, the returns of having the blower cooling passages is simply for aesthetics. I think people are obsessed with Flow and moving more water, but not focussing the attention to what actually pulls the BTUs from the Supercharger's Bricks. Moving the water too fast in the circuit will not reduce the MATs, as there is a balance of flow and keeping the coolant in the SCHX long enough to drop the coolant significantly enough to pull higher BTUs for each of the water molecules.

Factors Affecting Heat Transfer Rate over Time:

Temperature Difference: A larger temperature difference between the water and the aluminum will result in a faster rate of heat transfer. This is why I designed my SCHX to get 100% of the water/coolant to touch the entire surface area before going to the DS Aux and then to the SC.
Surface Area of Contact: The greater the surface area where the water and aluminum interact, the more efficient the heat exchange... nothing better than a triple-pass that holds 1.6 GALLONs of water!
Flow Rate of Water: Increased flow rate of water over the aluminum can enhance convection and improve the heat transfer rate. Flow rate with added convection time is a double win. However, passing fluid rate too fast, slows convection!
Thickness and Shape of Aluminum: Thicker aluminum might take longer to heat up or cool down, impacting the overall transfer rate. My SCHX end tanks are large, thin hydro-formed to improve convection while keeping flow rates high.
Phase Changes: If the water changes phase (e.g., boils and turns into steam), a large amount of energy (latent heat of vaporization) is absorbed, which would significantly affect the overall heat transfer over time. Any Phase change is absorbed in the Expansion Tank and regulated at 5-psi so there is no loss or introduction of more air to the system itself. Self-Bleeding!

To calculate BTUs transferred over time, you would need to consider:

The mass of the aluminum.
The mass of the water.
The specific heat capacities of both materials.
The initial temperatures of the aluminum and water.
The final temperature after a certain time interval.
Any heat losses to the surroundings.

The dominant mode of heat transfer (conduction, convection, radiation).
Wrapping this up, water has a much higher capacity to absorb heat compared to aluminum. However, aluminum transfers heat more readily due to its higher thermal conductivity. The actual amount of BTUs transferred over time will depend on the SCHX design, ability to remove air bubbles and the heat transfer time involved within a closed loop.

Hope this helps!!

07-21-2025, 08:27 PM	#13
Patriot Motorsports USA Drives: 2021 ZLE, C5 Z06 6.0L Procharged Join Date: Mar 2023 Location: South Carolina Posts: 574	Porting the water passages is cool to have a better fitting crossover, but unless the flow restriction of the actual bricks is eliminated, the returns of having the blower cooling passages is simply for aesthetics. I think people are obsessed with Flow and moving more water, but not focussing the attention to what actually pulls the BTUs from the Supercharger's Bricks. Moving the water too fast in the circuit will not reduce the MATs, as there is a balance of flow and keeping the coolant in the SCHX long enough to drop the coolant significantly enough to pull higher BTUs for each of the water molecules. Factors Affecting Heat Transfer Rate over Time: Temperature Difference: *A larger temperature difference between the water and the aluminum will result in a faster rate of heat transfer.* This is why I designed my SCHX to get 100% of the water/coolant to touch the entire surface area before going to the DS Aux and then to the SC. Surface Area of Contact: The greater the surface area where the water and aluminum interact, the more efficient the heat exchange... *nothing better than a triple-pass that holds 1.6 GALLONs of water!* Flow Rate of Water: Increased flow rate of water over the aluminum can enhance convection and improve the heat transfer rate. Flow rate with added convection time is a double win. However, passing fluid rate too fast, slows convection! Thickness and Shape of Aluminum: Thicker aluminum might take longer to heat up or cool down, impacting the overall transfer rate. My SCHX end tanks are large, thin hydro-formed to improve convection while keeping flow rates high. Phase Changes: If the water changes phase (e.g., boils and turns into steam), a large amount of energy (latent heat of vaporization) is absorbed, which would significantly affect the overall heat transfer over time. Any Phase change is absorbed in the Expansion Tank and regulated at 5-psi so there is no loss or introduction of more air to the system itself. Self-Bleeding! To calculate BTUs transferred over time, you would need to consider: The mass of the aluminum. The mass of the water. The specific heat capacities of both materials. The initial temperatures of the aluminum and water. The final temperature after a certain time interval. Any heat losses to the surroundings. The dominant mode of heat transfer (conduction, convection, radiation). Wrapping this up, water has a much higher capacity to absorb heat compared to aluminum. However, aluminum transfers heat more readily due to its higher thermal conductivity. The actual amount of BTUs transferred over time will depend on the SCHX design, ability to remove air bubbles and the heat transfer time involved within a closed loop. Hope this helps!!