Engine Temperatures...

[jasestu]

After some discussions (G20>Maintainence>Howdee), and for my own curiosity, I've taken a few temperature readings...

The results are an average of 10 readings taken at 1 minute intervals driving at open road speeds (100km/h 60mph). There was no aftermarket system to get air up to the location of the intake (where the stock air box is located). The data needs adjusting for the thermocouple calibration, but the difference is only about 0.4C and I can't be bothered doing it. The engine is a SR20DE in a 92 Primera Te. Error values are 1 standard deviation.

Ambient (taken from behind the front bumper)
--- 20.5 +/- 0.3C (69F)

Engine Bay (taken down the left hand side of the engine, I guess I should get a pic of this or describe it more accuratly)
--- 40.6 +/- 1.7C (105F)

Intake
--- 31.3 +/- 1.9C (88F)

Feel free to hit me up with any questions...

[P10DET]

Originally posted by jasestu
Feel free to hit me up with any questions...

What speeds were the readings taken at?

[jasestu]

Originally posted by P10DET
Cool data! So the increase you measured is approx 11 deg C. A bit more than I expected, but not terribly bad. Might be interesting to see what it would be with some air directed towards your airbox.
What speeds was this data accumulated at?

Well using my current homemade air direction system, the difference between having it opeational and blocked up is 4.1C (still about 8C above ambient). I'm not too impressed with that, so I'm going to try and rework things a bit...

Data was just at 100km/h. I took a handful of readings at 50km/h and intake temperature rose 12C while engine temp rose 6.