Just wondering if intercoolers can only flow one way? i have a new Hybrid cooler that is about to be plumbed up and thought it would be better to run the shorter pipe to the throttle body rather than the longer one which i have noticed on most other setups, because the shorter distance the air has to travel after it has been in cooled means it would heat up less before it reaches the inlet. The other setups have the longer pipe running to the inlet and the short one running to the cooler, which to me doesnt make sense unless the cooler will flow only from right to left (if looking at the front of the car) Cheers.

I cant see any problem, its not like its got valves or anything in it, i figure most people go the way you describe is for convinience and ease of plumbing.

well in that case would is it gonna make that much difference in air temperatures coz i want the air entering the engine to be as cool as possible. i just figured the shorter the distance from cooler to engine the better....

Don't think it would make any difference. The air velocity through 2.5" tubing on a 300BHP engine at full noise will be around 70 meters/second, so the cooled air dosn't spend much time in the hot engine bay.

70 metres a second? are you kidding? that's 21.5 cubic metres of air per second going into the engine.......

No i kid you not......Certainly isn't 21.5 cubic meters/second though....... Airflow = Velocity X Area = 70 X (pi x 0.03175mtrs squared) = 70 X 0.00316 = 0.22168 cubic meters/second = 470 CFM

man i haven't done high school maths in ages but i thought airflow was Velocity x Volume, not velocity x area. but yeah i could be wrong, just thought that 70 metres a second was a massive figure for airflow in a 2.5 inch pipe! amazing.

I'm no engineer, so this formula was taken from Corky Bell's book, "Maximum Boost". I was also amazed at this figure, but when you convert the cubic meters/second into the more familiar cubic feet/minute (CFM), 470 CFM appears to be a fairly realistic figure.

and an excellent book at that.. Its got formulas for everything. If you havnt got it then get it.

Quote: Originally Posted by sweet-na well in that case would is it gonna make that much difference in air temperatures coz i want the air entering the engine to be as cool as possible. i just figured the shorter the distance from cooler to engine the better.... you are absolutely correct man , ur best bet is to have the longest pipe run from turbo to cooler and shortest from cooler outlet to plenum. if u want to use what u have then do so , but benefits are there to be had if u do it the correct way.