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The Body Shop TECH General questions that don't fit in any other forum |
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#1
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Underhood Temps
What do you guys figure under hood air temperature gets to on a 90 degree day in the summer with the AC on?
Just wondering what plastics can be used under the hood. They used quite a few plastic tid bits back in the 60's and the technology wasn't very mature. I know nylon would be OK, not sure about ABS, or polycarbonate.
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#2
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On my Grand National (I know, apples to oranges) the IAT sensor was reading between 110° and 130° depending on how fast I was driving. That was with the air filter all the way up to the radiator support behind the drivers headlights. I've moved the filter to under the support in front of the front tire, and the temp drop was incredible.
So my guess is if IATs were that high at the filter, which was far away from the engine, the under hood temp must be higher.
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"Those poor souls have made the fatal mistake of surrounding us. Now we can fire in any direction" 1970 Trans Am RAIII 4 speed 1971 Trans Am 5.3 LM7 1977 Trans Am W72 Y82 1987 Grand National |
#3
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Well that's a start .. so I can figure on 130 at a minimum. My gut feeling is around 150-160 on our older cars. As temps go up and the Delta T between underhood and outside goes up it's going to start dumping heat into the sheet metal pretty fast.
But, I really have no idea, the fan pumps a lot of air in there, even after going through the radiator it's still a lot of air that is cooler than the surface of the engine.
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#4
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Cats ain't so dumb. Blondie (my Grandmother's cat) found a spot to stay warm.
Photo was taken winter of 68 or 69, a block from the Oregon coast
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#5
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this isnt really body shop related, probably get more replies in teh street or cooling section
would be real easy to use a infrared temp sensor & check under hood temps after driving awhile in the summer. |
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#6
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Jeez, I thought I did put it in the street section .... thank you!
Don't suppose a moderator could move it ??
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