M3 hood leakage

Krueger///M3 · 03-08-2008, 04:16 PM

Does anyone know if how the vents on the M3's hood drain? It seems like liquid could come in through the unused vent.

!Xoible · 03-08-2008, 04:29 PM

i was wondering the same, coz they are functional and lead to inside the air box. so im like what if it rains??

JPH · 03-08-2008, 04:46 PM

I think one is functional the other is not. Either way...I have wondered the same.

nusevad · 03-08-2008, 04:49 PM

This had been discussed in another thread and someone pointed out there are slits at the bottom of the vent to allow liquids to drain.

rzm3 · 03-08-2008, 04:49 PM

http://www.m3post.com/forums/showthr...highlight=hood

GregW / Oregon · 03-08-2008, 05:54 PM

Quote:

Originally Posted by FifthStreetz

This had been discussed in another thread and someone pointed out there are slits at the bottom of the vent to allow liquids to drain.

Here's the diagram of the intake system. There are drains in the bottom of the airbox.

rzm3 · 03-08-2008, 06:24 PM

hey greg, do you work for bmw? i am impressed w/ the amount of information you know about cars

nusevad · 03-08-2008, 06:27 PM

Nice diagram Greg!

Yea, where did you find that? Pretty cool stuff.

jtown · 03-08-2008, 07:28 PM

Shit that's awesome. Stock cold air intake.

mhutchins14 · 03-08-2008, 09:02 PM

Quote:

Originally Posted by rldzhao

hey greg, do you work for bmw? i am impressed w/ the amount of information you know about cars

I think he's an architect, so he is used to drawing cool stuff

GregW / Oregon · 03-08-2008, 10:11 PM

Quote:

Originally Posted by FifthStreetz

Nice diagram Greg!

Yea, where did you find that? Pretty cool stuff.

No special insider information--though this was meant for inside: BMW Aftersales Training docmuent. A very good read!

http://www.e90fanatics.com/pdf/BMW-M...nformation.pdf

JPH · 03-08-2008, 10:17 PM

Many thanks Greg. What about the other non-functional intake? I assume it drains properly away from anything that matters?

Greg: It's spring in the Great Northwest...get outside!! I miss it there.

GregW / Oregon · 03-08-2008, 10:26 PM

Quote:

Originally Posted by JPH

Many thanks Greg. What about the other non-functional intake? I assume it drains properly away from anything that matters?

It's blanked off, shouldn't be any leakage.

Quote:

Greg: It's spring in the Great Northwest...get outside!! I miss it there.

Then come back! Near 60 degrees today, all the trees ar budding out, time changes tonight, car here in just over a week--I'm hyped!

TheBry · 03-10-2008, 06:24 PM

Quote:

Originally Posted by GregW / Oregon

It's blanked off, shouldn't be any leakage.

Looks like water can still gather in the holes of the non-functional hood-mounted vent plate. Will have to dry that out after washing the car. I have visions of pulling away and all that water spraying up onto my freshly cleaned windshield.

man02195 · 03-10-2008, 06:42 PM

Quote:

Originally Posted by TheBry

Looks like water can still gather in the holes of the non-functional hood-mounted vent plate. Will have to dry that out after washing the car. I have visions of pulling away and all that water spraying up onto my freshly cleaned windshield.

From what i remember when i crawled around one a couple of weekends ago... there are some slits in the rubber boot that are normally closed, but with a little bit of water pressure, they open up and it drains "harmlessly" into the engine compartment and down to the ground.

drvai · 03-10-2008, 06:43 PM

Quote:

Originally Posted by GregW / Oregon

Here's the diagram of the intake system. There are drains in the bottom of the airbox.

WOW. great diagram. Thank you for sharing.
3 intakes? That's a lot. Number 3 is pretty low. Wouldn't this cause problems?

What happens with the intake on the low-right side of the car (fog lamp replacement?). It's also a fake?

JPH · 03-10-2008, 09:48 PM

Then come back! Near 60 degrees today, all the trees ar budding out, time changes tonight, car here in just over a week--I'm hyped![/QUOTE]

I am working on it. Building the career and touring the US...gotta pay for the new M3 somehow! If all goes well, 3 years and we will be back in Seattle. Thanks for the info. Thanks for making me feel terrible about the weather...still snowing in Chicago.

GregW / Oregon · 03-10-2008, 10:31 PM

Quote:

Originally Posted by drvai

WOW. great diagram. Thank you for sharing.
3 intakes? That's a lot. Number 3 is pretty low. Wouldn't this cause problems?

Basically the same as the E46 M3. I think they have it figured out.

Quote:

What happens with the intake on the low-right side of the car (fog lamp replacement?). It's also a fake?

Well, now that you ask, more cool diagrams, inclduing the gearbox cooler fed by the right vent.

1 Gearbox oil cooler
2 Engine oil cooler
3 Engine coolant cooler
4 Steering oil cooler

nusevad · 03-10-2008, 11:13 PM

wow there are alot of coolers!

Front end collisions are going to suck~

gearhead · 08-23-2008, 09:37 AM

Are the 8 pipes at the top of the head unit part of the air intake system? (I assume the exhaust pipes are hidden from view).

GregW / Oregon · 08-23-2008, 10:29 AM

Quote:

Originally Posted by gearhead

Are the 8 pipes at the top of the head unit part of the air intake system? (I assume the exhaust pipes are hidden from view).

Yes, that's the inside of the air intake plenum with the intake stacks.

positiveions · 08-23-2008, 12:21 PM

Wow Greg, thanks man. You are always on top of things.

03-08-2008, 04:16 PM	#1
Krueger///M3 Major 122 Rep 1,401 Posts Drives: 2003 HPF 2.5, 2008 M3 (Sold) Join Date: Feb 2008 Location: Pearl District, OR iTrader: (0) Garage List 2002 BMW ///M3 [0.00] 2008 BMW ///M3 [0.00]	M3 hood leakage Does anyone know if how the vents on the M3's hood drain? It seems like liquid could come in through the unused vent.
	Appreciate 0 Tweet Quote

03-08-2008, 04:29 PM	#2
!Xoible Banned 832 Rep 46,029 Posts Drives: .... Join Date: Nov 2006 Location: . iTrader: (4) Garage List 2008 M3 [4.00] 2007 335i [9.00] 2008 528i [8.00] 2006 Infiniti - G35 ... [8.00]	i was wondering the same, coz they are functional and lead to inside the air box. so im like what if it rains??
	Appreciate 0 Quote

03-08-2008, 04:46 PM	#3
JPH Second Lieutenant 20 Rep 254 Posts Drives: E92 M3 Coupe Join Date: Feb 2008 Location: Chicago iTrader: (0)	I think one is functional the other is not. Either way...I have wondered the same.
	Appreciate 0 Quote

03-08-2008, 04:49 PM	#4
nusevad O! So Sour!! 552 Rep 15,615 Posts Drives: Fast 240z / Slow M3 Join Date: Apr 2007 Location: 'Merica! iTrader: (24) Garage List 1971 Datsun 240z [0.00] 2008 M3 [9.60]	This had been discussed in another thread and someone pointed out there are slits at the bottom of the vent to allow liquids to drain. __________________
	Appreciate 0 Quote

03-08-2008, 04:49 PM	#5
rzm3 Moderator 673 Rep 4,737 Posts Drives: E92 M3 Join Date: Aug 2007 Location: USA iTrader: (18)	http://www.m3post.com/forums/showthr...highlight=hood
	Appreciate 0 Quote

03-08-2008, 06:24 PM	#7
rzm3 Moderator 673 Rep 4,737 Posts Drives: E92 M3 Join Date: Aug 2007 Location: USA iTrader: (18)	hey greg, do you work for bmw? i am impressed w/ the amount of information you know about cars
	Appreciate 0 Quote

03-08-2008, 06:27 PM	#8
nusevad O! So Sour!! 552 Rep 15,615 Posts Drives: Fast 240z / Slow M3 Join Date: Apr 2007 Location: 'Merica! iTrader: (24) Garage List 1971 Datsun 240z [0.00] 2008 M3 [9.60]	Nice diagram Greg! Yea, where did you find that? Pretty cool stuff. __________________
	Appreciate 0 Quote

03-08-2008, 07:28 PM	#9
jtown Lieutenant 33 Rep 596 Posts Drives: TBD Join Date: Sep 2006 Location: Norcal iTrader: (0)	Shit that's awesome. Stock cold air intake.
	Appreciate 0 Quote

03-08-2008, 10:17 PM	#12
JPH Second Lieutenant 20 Rep 254 Posts Drives: E92 M3 Coupe Join Date: Feb 2008 Location: Chicago iTrader: (0)	Many thanks Greg. What about the other non-functional intake? I assume it drains properly away from anything that matters? Greg: It's spring in the Great Northwest...get outside!! I miss it there.
	Appreciate 0 Quote

03-10-2008, 09:48 PM	#17
JPH Second Lieutenant 20 Rep 254 Posts Drives: E92 M3 Coupe Join Date: Feb 2008 Location: Chicago iTrader: (0)	Then come back! Near 60 degrees today, all the trees ar budding out, time changes tonight, car here in just over a week--I'm hyped![/QUOTE] I am working on it. Building the career and touring the US...gotta pay for the new M3 somehow! If all goes well, 3 years and we will be back in Seattle. Thanks for the info. Thanks for making me feel terrible about the weather...still snowing in Chicago.
	Appreciate 0 Quote

03-10-2008, 11:13 PM	#19
nusevad O! So Sour!! 552 Rep 15,615 Posts Drives: Fast 240z / Slow M3 Join Date: Apr 2007 Location: 'Merica! iTrader: (24) Garage List 1971 Datsun 240z [0.00] 2008 M3 [9.60]	wow there are alot of coolers! Front end collisions are going to suck~ __________________
	Appreciate 0 Quote

08-23-2008, 09:37 AM	#20
gearhead New Member 3 Rep 28 Posts Drives: "Transportation" Join Date: Aug 2008 Location: Midwest iTrader: (0)	Are the 8 pipes at the top of the head unit part of the air intake system? (I assume the exhaust pipes are hidden from view).
	Appreciate 0 Quote

08-23-2008, 12:21 PM	#22
positiveions Lieutenant General 961 Rep 11,722 Posts Drives: 19 Tacoma, 16 Golf wagon Join Date: Sep 2007 Location: Upland, CA iTrader: (2) Garage List 2019 Toyota Tacoma [0.00] 2016 VW Golf Sports ... [0.00] 1998 BMW M3 [0.00] 1990 BMW 325is [0.00]	Wow Greg, thanks man. You are always on top of things.
	Appreciate 0 Quote