Underhood temperatures

invariant · 07-30-2009, 01:16 PM

Has anyone ever measured underhood temperatures with and without the hood insulation? I wonder if it will make any difference...

Lazlo6 · 07-30-2009, 02:25 PM

Good question...

ToadHollow · 07-30-2009, 04:17 PM

*BUMP* for an educated answer ........

I would suspect well over the 300 mark considering all of the heatsoak issues the DCI intakes have.

invariant · 07-30-2009, 05:10 PM

I remember Former_Boosted_IS measured air temperatures in his intercooler reviews. Maybe somebody with a sensor at hand could do this test.

Amir87 · 07-30-2009, 05:22 PM

On another note, would a vented hood help with dissipating heat?

deamon32 · 07-30-2009, 06:07 PM

Quote:

Originally Posted by Amir87

On another note, would a vented hood help with dissipating heat?

I have been considering a vented hood for this reason. Not a big fan of the vented hood look but if it helps lower the temps I would be all over it.

invariant · 07-31-2009, 12:59 PM

I heard that 2009 LCI E90 don't have the hood insulation. Is that true?

kyleb350 · 07-31-2009, 01:01 PM

all the insultation does is protect the hood and deaden the sound

bimmerboy · 07-31-2009, 04:37 PM

my 09' 135 doesnt have any hood insulation as well... I think it's more of a cost cutting thing from BMW, as i'm sure the high engine temps can't be good for the paint of the hood.... oh well

Sniz · 07-31-2009, 04:54 PM

vented hood would certainly help....a lot.

invariant · 07-31-2009, 05:28 PM

Quote:

Originally Posted by bimmerboy

my 09' 135 doesnt have any hood insulation as well... I think it's more of a cost cutting thing from BMW, as i'm sure the high engine temps can't be good for the paint of the hood.... oh well

Isn't paint baked when cured anyway? Besides, under direct sunlight it will heat up to a high temperature anyway (especially dark colors).

scalbert · 07-31-2009, 07:39 PM

It can get up to 160 - 180 as measured in a previous test.

07-30-2009, 01:16 PM	#1
invariant Enlisted Member 4 Rep 41 Posts Drives: E90 335i 6MT Join Date: May 2008 Location: San Diego, CA iTrader: (0)	Underhood temperatures Has anyone ever measured underhood temperatures with and without the hood insulation? I wonder if it will make any difference...
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07-30-2009, 02:25 PM	#2
Lazlo6 Enlisted Member 5 Rep 44 Posts Drives: 2007 AW 335i M Join Date: Jan 2009 Location: Cape Town iTrader: (1)	Good question... __________________ If only my car was as exciting as my bike
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07-30-2009, 04:17 PM	#3
ToadHollow Once upon a time ...... 283 Rep 5,048 Posts Drives: 2008 JB E92 - SOLD 5/2010 Join Date: Sep 2008 Location: Asti, Italy & Austin, Texas iTrader: (16) Garage List 2008 E92 335i [8.00]	BUMP for an educated answer ........ I would suspect well over the 300 mark considering all of the heatsoak issues the DCI intakes have. __________________
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07-30-2009, 05:10 PM	#4
invariant Enlisted Member 4 Rep 41 Posts Drives: E90 335i 6MT Join Date: May 2008 Location: San Diego, CA iTrader: (0)	I remember Former_Boosted_IS measured air temperatures in his intercooler reviews. Maybe somebody with a sensor at hand could do this test.
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07-30-2009, 05:22 PM	#5
Amir87 Gruppe Titan 292 Rep 2,839 Posts Drives: 08 E92 SG/Coral Join Date: Sep 2007 Location: NC iTrader: (37) Garage List 2008 E92 335i [10.00]	On another note, would a vented hood help with dissipating heat? __________________
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07-31-2009, 12:59 PM	#7
invariant Enlisted Member 4 Rep 41 Posts Drives: E90 335i 6MT Join Date: May 2008 Location: San Diego, CA iTrader: (0)	I heard that 2009 LCI E90 don't have the hood insulation. Is that true?
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07-31-2009, 01:01 PM	#8
kyleb350 Brigadier General 420 Rep 4,710 Posts Drives: '21 X3MC Join Date: Jun 2008 Location: Milwaukee iTrader: (6)	all the insultation does is protect the hood and deaden the sound
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07-31-2009, 04:37 PM	#9
bimmerboy Captain 25 Rep 601 Posts Drives: 135i Join Date: Jan 2009 Location: Bay Area iTrader: (0)	my 09' 135 doesnt have any hood insulation as well... I think it's more of a cost cutting thing from BMW, as i'm sure the high engine temps can't be good for the paint of the hood.... oh well __________________ *--2009 BSM 135i--* -Manual, Sport Package, BMW Assist
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07-31-2009, 04:54 PM	#10
Sniz Lieutenant General 721 Rep 10,584 Posts Drives: e92 335 - gone // e36 M3 turbo Join Date: Mar 2007 Location: Ellicott City, MD iTrader: (1)	vented hood would certainly help....a lot. __________________
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07-31-2009, 07:39 PM	#12
scalbert Major General 161 Rep 5,776 Posts Drives: '13 S4, '15 Q7 Join Date: Feb 2007 Location: Woodstock, GA iTrader: (8)	It can get up to 160 - 180 as measured in a previous test.
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