Experiment # 1 in controlling the heat in the intake manifold...
04-10-2005, 06:42 PM
#1
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Experiment # 1 in controlling the heat in the intake manifold...
Since in theory, I'm supposed to get my new Dahlback intake manifold Monday or at the latest Tuesday and part of the install will include EVO Tuning's heat shield/gasket, I decided today to take and log some data on the air intake of my car. I decided on collecting data in two different ways. First, I used an infrared/laser heat thermometer and selected 9 reference points on my OEM intake manifold. Second, I used the VAG-COM and logged measuring block 004 for the Air Intake temperature and water temperature. I also used data provided to me from a digital thermometer connected to one of my two ICs (left side). It will be interesting to see if the heat shield does what it is marketed to do, keep the intake manifold cooler and thus the air intake temperature cooler. A few pictures followed by the data…
As you can see in this picture, I did mark 9 separate reference points to take the temperature readings as consistent as possible. R1 is by the throttle body, R2-3-4-5 are on the plenum and R6-7-8-9 are on the runners as far down as I could make them.
<img src="http://pictureposter.audiworld.com/46874/airintakedata2.jpg">
Close up of the manifold with reference point R3. You can see the laser aiming ray of the infrared thermometer.
<img src="http://pictureposter.audiworld.com/46874/airintakedata3.jpg">
The thermometer used for the data gathering.
<img src="http://pictureposter.audiworld.com/46874/airintakedata4.jpg">
Evo Tuning's gasket/heat shield.
<img src="http://pictureposter.audiworld.com/46874/airintakegasket.jpg">
Finally, today's gathered data.
<img src="http://pictureposter.audiworld.com/46874/airintakedata1.jpg">
As you can see in this picture, I did mark 9 separate reference points to take the temperature readings as consistent as possible. R1 is by the throttle body, R2-3-4-5 are on the plenum and R6-7-8-9 are on the runners as far down as I could make them.
<img src="http://pictureposter.audiworld.com/46874/airintakedata2.jpg">
Close up of the manifold with reference point R3. You can see the laser aiming ray of the infrared thermometer.
<img src="http://pictureposter.audiworld.com/46874/airintakedata3.jpg">
The thermometer used for the data gathering.
<img src="http://pictureposter.audiworld.com/46874/airintakedata4.jpg">
Evo Tuning's gasket/heat shield.
<img src="http://pictureposter.audiworld.com/46874/airintakegasket.jpg">
Finally, today's gathered data.
<img src="http://pictureposter.audiworld.com/46874/airintakedata1.jpg">
04-10-2005, 07:49 PM
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I bet you put more effort into testing then some of the tuners
Make that more time and money as well. Thanks for sharing your experiments and results with the rest of us.
Scott
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04-10-2005, 09:27 PM
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Excellent data . . .
Shows interesting and I guess predictable variation in heat soak under different conditions. Classic relationships between mass, thermal conductivity, and heat dissipation. It's interesting to actually see the heat soak begin during the cool down. I wonder what the oil temps would have looked like during the same exercise - at the sensor and just down stream from the new cooler.
