Can you really keep the water cool over a long period of time?

 

Two critical things with a Air to water

Ensuring the primary air to water has the capacity to remove the necessary heat form the charge air to the water

Second the front water to air heat exchanger must have the ability to dissipate the energy (heat) from the water to the ambient air.

For good measure I like to have the front heat exchanger to have the capacity of at least two times the air to water.

While most air to water system have less surface area for the charge air to reject its hi temperature the water gives a larger heat sink capability. When properly designed a Air to water system is just as effective as a Air to air system.


The one advantage to a Air to air is the whole system is passive AKA no water pumps to fail.

However

If one was to have some check in there system if the water pump was to fail it would take some time to actually increase the water temp to a point to where the effectiveness of the air to water is diminished to a point that it becomes ineffective.

 

Then who makes a proper water to air intercooler?

 

PWR

 

Can an air to water intercooler be effective for long periods of time? I'm of the opinion they can not be made to work well for lets say a 30min road race session?

Water is very good at getting the temp out of the air, but air is very poor at getting the temperature back out of the water. Genrerally speaking the difference in flow required is something like 100x between water and air.

That's why the air to water works great for drag racing (plus the fact that you can add water cooler than ambient) to the system.

I would think over time, you wouldn't be able to pull the heat out of the system, and the water temperature would continue to rise until it was close to the temperature of the intake charge air.

Now this argument changes between superchargers and turbochargers a bit. Superchargers heat the air quite a bit less and therefore take much less energy to cool back down to something close to ambient. Exact opposite for turbos.

Originally I was thinking of adding a very large radiator for an air to water intercooler to the back of my s2k racecar. I could use the entire area between the frame rails as a radiator. I could add a fan to the system and that would suck air from the driver's compartment through the car and out under the car. Not great for aero, but should have a good amount of airflow. Unfortunately, the math said it jsut wasn't going to work for a turbo system. This bears out with my current Comptech supercharger. At the end of a run the intercooler is hot. A buddy has a Comptech as well and his was hot as well.

 

any one looked at there BOV

http://us.st11.yimg.com/us.st.yimg.com/I/y...856_1961_538323

 

what wastegate is that.
TiAL sport???

 

This got a bit off topiuc, I want to know how this manifold is performing, I'm thinking of getting one and would be interested to know if it's any better than other logs out there.

 

I am interested in this manifold. I can't buy a kit for my car. Since I have a F20C engine and drive train in my 73 Celica. I have to do a custom made kit.

I was wondering where the dump tube would go since the wastegate is located on the top of the manifold.

 

lol, down the side of the manifold and out near the downpipe...or recirculated into the downpipe. Whichever you decide.