undertray removal

E55amg/FD3S · 11-04-2009, 10:26 PM

Has anyone removed the undertray from underneath the engine compartment to allow for more airflow? Do you think doing this will help reduce some of the underhood heat?

To remove this ad, register today or login if you already are registered!

RenntechE55 · 11-04-2009, 10:30 PM

I have had mine off for some time now and I cant really see a difference.

E55Bullet · 11-04-2009, 10:49 PM

Doesn't that play a huge part in aerodynamics?

Hammer Down · 11-04-2009, 11:06 PM

The only problem with removing the tray is that it is designed to direct the airflow underneath the car and by removing that you will alter the airflow.

Forrest Gump 9 · 11-05-2009, 10:56 AM

Quote:

Originally Posted by E55Bullet

Doesn't that play a huge part in aerodynamics?

seriouly, how many time do you drive fast enough for "aerodynamics" to come in and affect your driving. I take mine off during the summer and put them back in the winter. I do not drive my car in the winter, but on the really nice winter day I may take the E out. On the side note, it help a lot when you work on your car if you do not have the under trays. I constantly drop my tools, nuts, bolts,.....so it really help not having the trays there.

shardul · 11-05-2009, 12:17 PM

I have cut an opening in the first under tray below the heat exchanger. I don't know if it helps. The reason I did this is because I saw the undertray of a S65 and it had openings on the tray under the heat exchanger.

rluvsbenz · 11-05-2009, 12:30 PM

I keep it off in the summer and put it on for the winter. I've been told it keeps the heat off your engine during the summer. I also belive it helps with aero dynamic. I'm sure MB did not put this cover for show, it has some added value.

E55amg/FD3S · 11-05-2009, 02:28 PM

I figured the heat will excavate rather quickly when the vehicle is in motion. Even sitting idling it should help somewhat.

Spotting a leaking oil drain plug will also be very simple since that's what I'm dealing with right now. Anyone ever use teflon tape on the drain plugs?

E55Bullet · 11-05-2009, 03:04 PM

Quote:

Originally Posted by Forrest Gump 9

seriouly, how many time do you drive fast enough for "aerodynamics" to come in and affect your driving. I take mine off during the summer and put them back in the winter. I do not drive my car in the winter, but on the really nice winter day I may take the E out. On the side note, it help a lot when you work on your car if you do not have the under trays. I constantly drop my tools, nuts, bolts,.....so it really help not having the trays there.

See Thread "TOP SPEED"

malakasnyc · 11-05-2009, 04:10 PM

it actually cut my 1/4 mile times 3 tenths and picked up 2mph !!!!!!

LOL JK

TopGun32 · 11-05-2009, 05:35 PM

I would leave them alone... gets your engine dirty quicker and more water exposure. Specially if you live in desert areas or in windy locations.

Instead, remove the vent plastic cover on your hood and remove the sound pading on your hood..

I would only remove maybe during 1/4 track times.. where top speed is not a factor.

mekantor · 11-05-2009, 09:13 PM

Enjoy having road debris smacking your 3 oil pans much? Not to mention the sensors and boots hiding down there. Leave it on.

Oh and the engine doesnt generate that much heat when you're standing still at idle, thats why its called idle, and why the fan turns on and off instead of running constantly.

soundeffects · 11-05-2009, 09:33 PM

HOT air rises it doesn't escape fromt he bottom, this will not help get heat out of the car very much. It will hurt the Aerodynamics more.

izzyz28 · 11-05-2009, 10:08 PM

The middle undertray contains ducts that route cold air to the alternator and something else on the other side of the engine. I leave mine on all the time, except when I'm changing the oil, which I just did about 2 hours ago. It takes all of 5 minutes to remove them, and I can't think of any benefit to leaving them off.

mekantor · 11-05-2009, 10:22 PM

Quote:

Originally Posted by izzyz28

The middle undertray contains ducts that route cold air to the alternator and something else on the other side of the engine. I leave mine on all the time, except when I'm changing the oil, which I just did about 2 hours ago. It takes all of 5 minutes to remove them, and I can't think of any benefit to leaving them off.

Those ducts are behind the belt-driven accessories. It looks to me like they lead to the headers or somewhere in that area.

11-04-2009, 10:30 PM	#2
RenntechE55 Super Member Join Date: Jan 2009 Location: Fountain Hills Posts: 964 Drives: E55 AMG	I have had mine off for some time now and I cant really see a difference. __________________ 2005 S55 engine , 180mm LET pulley , VRP intake/ Python tubes , Floored Fab. LT's with Race cats. Floored Fab. HE/ CM30 pump 19" OZ Racing wheels , lowered with links........whats next??

11-04-2009, 10:49 PM	#3
E55Bullet Member Join Date: Apr 2009 Location: Lafayette, IN Posts: 186 Drives: 2006 E55	Doesn't that play a huge part in aerodynamics? __________________ -Rear Cat Delete -Res. Delete -172mm LET Pulley -Eurocharged Heat Exchanger -Eurocharged Custom Tune -CM90 Johnson Pump - -10 thermostat mod -S55 Driver's Side intake tube -K&N's -5% Tint 35% windshield -Mandrus Millenium Wheels -Nitto 555R's 285/35/18 -Front and Rear EBC Yellow Stuff Pads "It's more like a Hammer, a bit clumsy, but it will still kill you."

11-04-2009, 11:06 PM	#4
Hammer Down MBWorld Fanatic! Join Date: Jan 2005 Location: Bay Area Posts: 1,541 Drives: 2004 E55 , 2009 E350 , 2004 Acura Tsx	The only problem with removing the tray is that it is designed to direct the airflow underneath the car and by removing that you will alter the airflow. __________________ The Fastest Stock Powered E55 on DR's 121.18 in the USA The Quickest Stock Powered E55 on DR's on the West Coast 11.91 (for now, go get it Max)

11-05-2009, 12:17 PM	#6
shardul MBWorld Fanatic! Join Date: May 2008 Location: Houston Posts: 1,401 Drives: 2003 W211 E55	I have cut an opening in the first under tray below the heat exchanger. I don't know if it helps. The reason I did this is because I saw the undertray of a S65 and it had openings on the tray under the heat exchanger. __________________ "Lieber Nurburgring als Ehering"

11-05-2009, 04:10 PM	#10
malakasnyc Member Join Date: Mar 2008 Location: long island ny Posts: 222 Drives: 2008 e63 amg	it actually cut my 1/4 mile times 3 tenths and picked up 2mph !!!!!! LOL JK __________________

11-05-2009, 12:30 PM	#7
rluvsbenz Junior Member Join Date: Sep 2009 Location: Bartlett, IL Posts: 48 Drives: 2006 E55 Designo 1991 190E 2.3 2000 BMW 740i 1987 PORSHCE 928S4	I keep it off in the summer and put it on for the winter. I've been told it keeps the heat off your engine during the summer. I also belive it helps with aero dynamic. I'm sure MB did not put this cover for show, it has some added value.

11-05-2009, 02:28 PM	#8
E55amg/FD3S Newbie Join Date: Jul 2005 Posts: 8 Drives: 03 e55	I figured the heat will excavate rather quickly when the vehicle is in motion. Even sitting idling it should help somewhat. Spotting a leaking oil drain plug will also be very simple since that's what I'm dealing with right now. Anyone ever use teflon tape on the drain plugs?

11-05-2009, 05:35 PM	#11
TopGun32 MBWorld Fanatic! Join Date: Aug 2005 Location: Southern Cali (Ontario) Posts: 2,924	I would leave them alone... gets your engine dirty quicker and more water exposure. Specially if you live in desert areas or in windy locations. Instead, remove the vent plastic cover on your hood and remove the sound pading on your hood.. I would only remove maybe during 1/4 track times.. where top speed is not a factor. __________________ 2002 C32 AMG -SC Clutch Pulley by Code3 Performance + Intake -ECU tuning and FM H/E -18" C55 Wheels 2003 E55 AMG (Stage 1) -ASP Pulley -LET ECU Flash (OBD2) -FM H/E -19" AMG CLS55 wheels 2008 Toyota Land Cruiser 4x4 (200 Series) -Stock

11-05-2009, 09:13 PM	#12
mekantor Member Join Date: Feb 2009 Location: Houston, TX Posts: 210 Drives: 03 E55, 93 Maxima SE	Enjoy having road debris smacking your 3 oil pans much? Not to mention the sensors and boots hiding down there. Leave it on. Oh and the engine doesnt generate that much heat when you're standing still at idle, thats why its called idle, and why the fan turns on and off instead of running constantly. __________________

11-05-2009, 09:33 PM	#13
soundeffects Junior Member Join Date: May 2007 Posts: 48	HOT air rises it doesn't escape fromt he bottom, this will not help get heat out of the car very much. It will hurt the Aerodynamics more.

11-05-2009, 10:08 PM	#14
izzyz28 Member Join Date: Apr 2009 Location: Chicago suburbs Posts: 135 Drives: 2004 E55 AMG	The middle undertray contains ducts that route cold air to the alternator and something else on the other side of the engine. I leave mine on all the time, except when I'm changing the oil, which I just did about 2 hours ago. It takes all of 5 minutes to remove them, and I can't think of any benefit to leaving them off.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes	Rate This Thread
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode	Rate This Thread: