Hi all.
Has anyone measured their intercooler temperatures during
a dyno run? I just got a pyrometer, and find that one minute
of spirited driving gets them up to 140 degrees.
Has anyone seen the power benefits on a dyno from icing the
intercoolers?

thanks,
Joe

 

No , because that doesn’t represent the real word driving, if you wan to see the real power of the car, run it on the dyno like you would on the street. The temps will get up there....no doubt

 

I also posted this on rennlist, what about the idea of N02 for the intercoolers. This way you could use it in short bursts on the street/strip/track?

 

Back in the day when i was running a 5.0 L supercharged mustang, I i used a 50 shot of strait spray to cool the air going in the plenum, it did work but then again those were cheap motors......

 

If this works, it would work 'in the real world' either in
quarter-mile drag strip efforts, or my venue (autocross).
Joe

 

Joe,
What I use when there is no fan at the top of intercooler is a bag of ice in between runs, it works, cheers, Sonny.

 

thanks Sonny!
I'm trying to get a rough quantitative idea of the power difference
between a motor with a 140 degree intercooler and a 32 degree one.

If other factors also matter, let's say ambient temp is 80 degrees,
sea level, and boost at 1.0 bar, and race gas.

 

I got info from Todd Knighton. He says:

You get about .5hp/degF you lower the temps. So, in an ideal world,
you have nearly 30hp to gain if you could get the temps back to ambient (81deg).

 

you can use CO2 and get it to spray on the intercooler. It works just as well as using nitrous to cool the intercooler and is not an oxidizer incase of an accident. It is also cheaper and easier to refill.

DMK has this setup in his car before he had a "little" issue with the motor.

 

Just make shure your engine does not ingest this stuff, it is a flame quencher,cheers, Sonny.

 

You could pull the temps off a IAT just after the intercooler...

 

Below are a few easier options.
1. Bigger intercoolers
2. Water injection (easy, cheap and low maintenance)

 

Holy necrobump Batman!

 

? Very difficult to compare dyno pulls to actual pulls on the street. Very few dyno's are equipped with the necessary fans to replicate driving on the street. I would recommend using it as a tool to set a baseline, and then assess subsequent modifications. Even that can be challenging, if you dyno baseline in winter, and come back in the summer after a few mods, ambient temps will be much different.

 

One leaf blower to each IC inlet and IAT will stay in control.