Pre intercooler and Post Intercooler temperature.

[lambo]

Hello all,

does anyone of u ever set up a sensor for pre and post intercooler temperature?

What is the efficiency of the intercooler from the test? I am trying to research for new type of intercooling technique but need data of present air - air intercooler to see if it will work.

[Sydneykid]

Hi Lambo, we run 4 air temperature sensors when testing;

one ambient, located in front of the intercooler

one air inlet, located at the air filter

one turbo outlet, located between the turbo and the intercooler

one engine inlet, located just before the throttle body

Thermo couples fit between the silicone hose & clamps and the alloy pipework.

Intercooler efficiency is expressed as a percentage, which I calculate this way...........

intercooler inlet temperature (say 50)

minus

the intercooler outlet air temperature (say 30)

divided by

the intercooler inlet temperature (say 50)

minus

the ambient temperature (say 25)

Thus (50-30)/(50-25) = 80%

We commonly see numbers in the 70's

Hope that helps

[lambo]

Hi Sydneykid,

What boost are u running and wat turbo is it using during the test?

I understand that the air get heated up a lot during boost. Sometime close to 100 degree. Say if we have a technology to make the ambient temp same as the post intercooler temp will that make a lot of difference?

Anyway i notice the figures u have for the post is very good for a IC. Wat brand is it? Does it have a good flow?

The second issue about IC is that they have a lot of drag to cool efficiently. Did u manage to get the pre and post psi of the IC?

80% efficiency is very high... is that a rough figure?

[Sydneykid]

Hi Lambo

The number we posted are for the purposes of showing you how to find out the Intercooler efficiency as a %. As of right now, we have not conducted a test for our intercooler (standard GTR Cooler). This is something for you to do yourself, as all coolers are different.

Obviously, the more you can cool down the air before it enters the engine, the better, but I do not believe there is a single intercooler which can bring the air down to the ambient temp (I may be wrong, but it is possible if you live in Thredbo....)

Hope that explains the numbers

S of S

[hippy]

would u know the difference between effiiciencies of a stock cooler compared to a gtr cooler?

[Sydneykid]

hippy

As of right now, we are not totally sure, as we never ran it with a standrard intercooler, and have not fully conducted a test with the GTR cooler

[MM2death]

I am just wondering how safe my setup is on my RB20DET. I'm pushing close to 200rwkw with aftermarket turbo but still using standard intercooler (until i get the funds to upgrade). It was dynoed at 13psi and fully tuned with no pinging (25 degrees ambient approx). I don't know what to exactly be listening for if my car starts to ping....so i usually only give it some stick on cold nights (below 10 degrees). How different would the standard cooler perform on a cold night compared to say 25 - 30 degree day? How long would roughly would it take for the cooler to get heat soaked? What temperature range is acceptable for the air after the cooler?

Regards,

Scott.

[MM2death]

Anyone?

[lambo]

I read from a website that any below 80 degree is fine. But lower is better.

I wonder what i effect of air in 0 Degree enters the engine?? Major Boost???

[Grim]

MM2death if you're getting 192rwkw out of the stock cooler then you're very lucky. Your stock cooler would definately be the weak link in your setup so I'd say at 13psi your stock cooler would be getting heat soaked within a few seconds of max boost.

[Sydneykid]

MM2Death: As a guesstimate, with a GTR cooler on your car, may achieve more like 220rwkw

The optimum temperature for turbocharged cars and turbo changers in 17degree Celcius - I learnt that about 8 years ago watching the Champ Cars at Long Beach on Channel 10... as an 11 year old... strange the things you remember

S of S