Inlet temperature at plenum

[Sydneykid]

Hi Wolverine, 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

this is the air temp sensor we use

http://www.autospeed.com/A_0807/cms/article.html

Hope that helps

[wolverine]

thanks SK, i did the search before and i read your previous post on the subject. just to clarify are you seeing efficiencies of 70% or intercooler outlet temps of 70 degrees?

[Sydneykid]

Efficiencies, at ~70%

[Chris32]

I have been running a Jaycar thermometer for about 18months in my car, it is located just before the bend going into the throttle body (near turbo etc)

On the dyno (with dyno cell temps approx 25 degrees) it was holding 30 degrees after 3 runs. The dyno operator (Shaun at Boostworx) was impressed with the cooler, saying the thermo wrap that covers most of the plubming must be working a charm

On road it seems to be about 5-10 degrees above ambient, at traffic lights etc it goes quite high, on one summers day it got to 85 degrees while at some traffic lights

The thermometer cost me about $15 from memory, I will take a few pics of it

Chris

[Chris32]

This is it - http://www1.jaycar.com.au/productView.asp?...eMax=&SUBCATID=