Water to air intercoolers.

RotorDad · 02-19-2011, 10:46 AM

My friends & I have run water to air set ups packed with ice in a number of drag cars here with success, they did their job. All of the street driven cars in our group use Air to Air coolers, unless the vehicle is supercharged & requires the need of a Water to Air. I wouldn't say that air to air coolers are best option in all situations, but in a street driven or anything other then drag racing they would be the better choice. Now I don't know what Rice was talking about when saying a shit load of plumbing & huge pressure drops. Most of the water to air systems I have seen have far fewer bends & piping. Two things to think about when looking at charge coolers, Heat transfer & Friction loss. The more piping & bends in the system can cause large pressure drop. Air to air systems are simple & effective, but packaging & routing can be an issue. Water to air systems have their place in motorsports, there is added componets, but they do not need to be in the engine compartment. Here is something I read a long time ago " Think about a hot frying pan. If you want it to cool quickly, do you dunk it in water or do you wave it around in the air? Which method cools faster?…" The idea would be to find the charge cooler system that best fits what you plan on doing with the car. On the idea of keeping the air to air & adding water/meth injection. Okay I will say that chemical cooling is a great idea, but it does take your simple FMIC system & make it more complex. So with guys like BDC out there relying on such systems without someone knowing what they are doing can prove to be a bad idea.

RICE RACING · 02-19-2011, 03:33 PM

Here is an idea:

When you heat water, think Ocean or cup of coffee....... how long does to take to cool down? *a very LONG TIME!* that is cause it has a very high specific heat capacity. Like George Michael and Elton John, it goes both ways.

Once you get to it you are fucked.

Water is awesome as a total loss coolant, its far better using it in the engine rather than around it

You only need to use small amounts and you can totally change the pressure profile in the engine (run engine at 100% more power, while still not exceeding the peak pressure and temperature you had at far lower power). It is far more beneficial to use total loss cooling system and you need non of the complexity of needing to cool the water back down

(this is what I meant by extra plumbing and radiators etc etc).

RETed · 02-21-2011, 08:10 AM

Thread moved to Rotary Tech from 2nd gen section...
Enjoy!

-Ted

02-19-2011, 10:46 AM	#1
RotorDad Big Ugly Join Date: Apr 2009 Location: Fredericksburg, Va Posts: 591 Rep Power: 17	My friends & I have run water to air set ups packed with ice in a number of drag cars here with success, they did their job. All of the street driven cars in our group use Air to Air coolers, unless the vehicle is supercharged & requires the need of a Water to Air. I wouldn't say that air to air coolers are best option in all situations, but in a street driven or anything other then drag racing they would be the better choice. Now I don't know what Rice was talking about when saying a shit load of plumbing & huge pressure drops. Most of the water to air systems I have seen have far fewer bends & piping. Two things to think about when looking at charge coolers, Heat transfer & Friction loss. The more piping & bends in the system can cause large pressure drop. Air to air systems are simple & effective, but packaging & routing can be an issue. Water to air systems have their place in motorsports, there is added componets, but they do not need to be in the engine compartment. Here is something I read a long time ago " Think about a hot frying pan. If you want it to cool quickly, do you dunk it in water or do you wave it around in the air? Which method cools faster?…" The idea would be to find the charge cooler system that best fits what you plan on doing with the car. On the idea of keeping the air to air & adding water/meth injection. Okay I will say that chemical cooling is a great idea, but it does take your simple FMIC system & make it more complex. So with guys like BDC out there relying on such systems without someone knowing what they are doing can prove to be a bad idea. __________________ *Boosted Big Body On 335's* PS3 ID: Rotordad 1986 Mazda RX7 GXL - Street ported 13BT, Haltech, 62mm, ect. 2006 MazdaSpeed 6 - Eagle, Wiseco, Cobb, ect.

02-19-2011, 03:33 PM	#2
RICE RACING Don Mega Join Date: Dec 2008 Location: Utopia Posts: 1,688 Rep Power: 18	Here is an idea: When you heat water, think Ocean or cup of coffee....... how long does to take to cool down? a very LONG TIME! that is cause it has a very high specific heat capacity. Like George Michael and Elton John, it goes both ways. Once you get to it you are fucked. Water is awesome as a total loss coolant, its far better using it in the engine rather than around it You only need to use small amounts and you can totally change the pressure profile in the engine (run engine at 100% more power, while still not exceeding the peak pressure and temperature you had at far lower power). It is far more beneficial to use total loss cooling system and you need non of the complexity of needing to cool the water back down (this is what I meant by extra plumbing and radiators etc etc). __________________ www.riceracing.com.au Worlds best Apex Seals Coil on Plug Water Injection ECU Calibration