How long do you let your M2 cool down ?

FANBMWM · 10-24-2017, 06:15 AM

Hi Everyone,
How long do you let your M2 cool down after a spirited drive?
Usually depending on how hard have I driven, I let her cool down from 30s to 2/3 minutes.
If the the car is at just before 120*C it's 2/3 minutes but when it's at 70*C than 0->30s.
Please tell me about what is your opinion about this.

devo · 10-24-2017, 06:30 AM

Quote:

Originally Posted by FANBMWM

Hi Everyone,
How long do you let your M2 cool down after a spirited drive?
Usually depending on how hard have I driven, I let her cool down from 30s to 2/3 minutes.
If the the car is at just before 120*C it's 2/3 minutes but when it's at 70*C than 0->30s.
Please tell me about what is your opinion about this.

I drive at moderate speeds for a couple miles after spirited runs and before shut down or let the engine idle at a slightly elevated rpm for a couple minutes in the garage.

David1 · 10-24-2017, 09:31 AM

Makes no difference. The water pump will run when you turn the car off to lower the temps some.

No Boost · 10-24-2017, 07:06 PM

Install a turbo timer

.

look585 · 10-24-2017, 08:33 PM

Quote:

Originally Posted by David1

Makes no difference. The water pump will run when you turn the car off to lower the temps some.

It's more important for the turbo to wind down.

If you're cracking along hard and suddenly shut down the motor you will kill your turbo.

EstorilM · 10-24-2017, 08:44 PM

I don't take any extra time. I also don't ever shut it down immediately after really hammering it either so I haven't had to worry.

atxsk8r · 10-24-2017, 09:02 PM

Quote:

Originally Posted by Stage IV

Install a turbo timer

.

LOL i had one of these on my built turbo Civic back in the day. Thought i was cool when i walked away from the car and it would shut off by itself minutes later

kab_m2 · 10-24-2017, 10:23 PM

Do modern cars really need this unless you are on a track day?

ORIGIN M. · 10-25-2017, 01:33 AM

Quote:

Originally Posted by David1

Makes no difference. The water pump will run when you turn the car off to lower the temps some.

I guess you are excluding your turbo.

ORIGIN M. · 10-25-2017, 01:34 AM

Quote:

Originally Posted by atxsk8r

Quote:

Originally Posted by Stage IV

Install a turbo timer

.

LOL i had one of these on my built turbo Civic back in the day. Thought i was cool when i walked away from the car and it would shut off by itself minutes later

It was never programmed correctly.

ZPrime · 10-25-2017, 03:11 AM

Quote:

Originally Posted by hogger453

It's more important for the turbo to wind down.

If you're cracking along hard and suddenly shut down the motor you will kill your turbo.

Nope. Any modern turbocharged car has a liquid cooled turbo, and the car will circulate coolant after shutoff if it feels the temp is unsafe.

My 2012 Audi did it, I would be absolutely astounded if the M2 doesn't as well.

Ian ///M · 10-25-2017, 07:05 AM

So the next time I go through my neighborhood at 100mph and powerslide it in my garage, I should wait a little before I turn the car off? Good to know

look585 · 10-25-2017, 08:30 AM

Quote:

Originally Posted by ZPrime

Nope. Any modern turbocharged car has a liquid cooled turbo, and the car will circulate coolant after shutoff if it feels the temp is unsafe.

My 2012 Audi did it, I would be absolutely astounded if the M2 doesn't as well.

oil, not coolant.

David1 · 10-25-2017, 08:35 AM

Quote:

Originally Posted by ORIGIN M.

I guess you are excluding your turbo.

Water pump runs specifically to cool the turbo. They have done this ever since the N54 came out. The turbo spins down very quick. We are not in the 80's any more with crap oil.

atxsk8r · 10-25-2017, 09:05 AM

Quote:

Originally Posted by ORIGIN M.

It was never programmed correctly.

Huh?

look585 · 10-25-2017, 09:21 AM

Quote:

Originally Posted by David1

Water pump runs specifically to cool the turbo. They have done this ever since the N54 came out. The turbo spins down very quick. We are not in the 80's any more with crap oil.

How do you know the oil was crap in the 80's?

Oil does a much better job cooling the turbo than water.

Take the oil away from the turbo and see how long water will keep the turbo running. Yes, I know it's for the bearings.

In other type of equipment there is a oil pump timer to run an oil pump specifically for the turbo. Running water is for that number of people that don't know how to take care of their equipment and the manufacturer had to step in for the morons and save themselves costly repairs before the warranty expired.

I'm sure your engine would also be fine without oil oh, let's say for 20 seconds as it winds down without oil. I'm sure only water circulation will help it from preventing it to seize.

Turbos will always run after the engine is shut down. How long they run without oil is completely up to the owner. One reason I would think twice buying a used turbo car.

ORIGIN M. · 10-25-2017, 10:10 AM

Quote:

Originally Posted by atxsk8r

Quote:

Originally Posted by ORIGIN M.

It was never programmed correctly.

Huh?

It can be programmed to stay on for 30 minuets.

It clearly wasn't programmed to stay on to long.

atxsk8r · 10-25-2017, 12:30 PM

Quote:

Originally Posted by ORIGIN M.

It can be programmed to stay on for 30 minuets.

It clearly wasn't programmed to stay on to long.

Yes, you can program it to whatever time you want and a couple of minutes was enough time for me.

30 minutes is out of control for turbo timer setting LOL.

ORIGIN M. · 10-25-2017, 01:43 PM

Quote:

Originally Posted by atxsk8r

Quote:

Originally Posted by ORIGIN M.

It can be programmed to stay on for 30 minuets.

It clearly wasn't programmed to stay on to long.

Yes, you can program it to whatever time you want and a couple of minutes was enough time for me.

30 minutes is out of control for turbo timer setting LOL.

I misread what you posted I guess.

TT1351 · 10-25-2017, 07:38 PM

To be honest, I wouldn't worry about it. BMW's believe it or not are sometimes purchased by non-enthusiasts that may not even be aware the car has a turbo. I would be willing to bet BMW is aware of this and gone to great lengths to insure the turbo is protected enough to avoid issues that would end up being warranty issues.

look585 · 10-25-2017, 08:56 PM

We can blah, blah, blah this too death. After a spirited drive let the engine idle for two minutes before shutting off the engine if you give a **** about your car. If you're going to sell your scrap after a couple of years and are clueless, don't worry about it.

pruettfan · 10-25-2017, 09:05 PM

[QUOTE=hogger453;22344851]How do you know the oil was crap in the 80's?

Are you serious?? There is a ton of information about the advantages of synthetic oils that are used today over conventional oils, not to mention the fact that turbo technology has changed a ton in 30 years. I had a turbo Nissan 200SX that was nothing short of a lemon and had less than 40,000 miles on it.

It makes sense to let a turbo charged car to sit for a couple of minutes after running it hard but lets not get silly.

10-24-2017, 06:15 AM	#1
FANBMWM If in doubt flat out - Colin Mcrae 127 Rep 261 Posts Drives: BMW M5 F10 LCI SMB M2 LCI LBB Join Date: Oct 2010 Location: Warsaw iTrader: (0) Garage List 2010 BMW 760li [10.00]	How long do you let your M2 cool down ? Hi Everyone, How long do you let your M2 cool down after a spirited drive? Usually depending on how hard have I driven, I let her cool down from 30s to 2/3 minutes. If the the car is at just before 120C it's 2/3 minutes but when it's at 70C than 0->30s. Please tell me about what is your opinion about this.
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10-24-2017, 09:31 AM	#3
David1 Brigadier General 814 Rep 3,952 Posts Drives: 09 E92 09 X5 Join Date: Mar 2007 Location: Columbus, OH iTrader: (1)	Makes no difference. The water pump will run when you turn the car off to lower the temps some. __________________ 2021 M2 Comp Sunset Orange \|Black with orange Stitching Dakota Leather\|Executive Pkg\|DCT
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10-24-2017, 07:06 PM	#4
No Boost enthusiasm > practicality 4021 Rep 2,247 Posts Drives: 987 CS \| G35x Join Date: Oct 2016 Location: Chester County, PA iTrader: (0) Garage List 2007 987.1 Cayman S [10.00] 2008 Infiniti G35x ... [0.00]	Install a turbo timer . __________________ FSI 3.8L Stg II\|6MT\|SOUL\|IPD+GT3 TB\|Numeric Racing\|KW\|Tarett\|Rennline\|Raceseng\|APEX\|Recaro\|7.3 lb/hp VQ35HR\|5AT\|Stillen\|FI\|UpRev tune 8k rpm\|TransGo\|Hotchkis\|Whiteline\|H&R\|Z1\|Corbeau\|R1 Concepts\|10 lb/hp Left lane campers, GTFO!
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10-24-2017, 08:44 PM	#6
EstorilM Cars, beer, hiking 367 Rep 259 Posts Drives: 2017 M2 Join Date: May 2015 Location: PNW iTrader: (0)	I don't take any extra time. I also don't ever shut it down immediately after really hammering it either so I haven't had to worry.
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10-24-2017, 10:23 PM	#8
kab_m2 Second Lieutenant 115 Rep 256 Posts Drives: M135i, X1 25i, M2 LCI Join Date: Jan 2013 Location: Melbourne, Australia iTrader: (0)	Do modern cars really need this unless you are on a track day?
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10-25-2017, 07:05 AM	#12
Ian ///M Captain 491 Rep 656 Posts Drives: '17 AW M2 (DCT) Join Date: Apr 2013 Location: VA iTrader: (0)	So the next time I go through my neighborhood at 100mph and powerslide it in my garage, I should wait a little before I turn the car off? Good to know
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10-25-2017, 07:38 PM	#20
TT1351 Captain 508 Rep 929 Posts Drives: 135, GTS, E30 M3+ Join Date: Dec 2008 Location: Massachusetts iTrader: (2)	To be honest, I wouldn't worry about it. BMW's believe it or not are sometimes purchased by non-enthusiasts that may not even be aware the car has a turbo. I would be willing to bet BMW is aware of this and gone to great lengths to insure the turbo is protected enough to avoid issues that would end up being warranty issues.
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10-25-2017, 08:56 PM	#21
look585 Lieutenant 314 Rep 480 Posts Drives: M2CS Join Date: Oct 2008 Location: Los Angeles iTrader: (0) Garage List 2020 BMW M2 CS [10.00]	We can blah, blah, blah this too death. After a spirited drive let the engine idle for two minutes before shutting off the engine if you give a **** about your car. If you're going to sell your scrap after a couple of years and are clueless, don't worry about it.
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10-25-2017, 09:05 PM	#22
pruettfan Brigadier General 1622 Rep 3,402 Posts Drives: 2017 M2, LBB, DCT, Exec Join Date: Jul 2009 Location: Chandler, AZ iTrader: (0)	[QUOTE=hogger453;22344851]How do you know the oil was crap in the 80's? Are you serious?? There is a ton of information about the advantages of synthetic oils that are used today over conventional oils, not to mention the fact that turbo technology has changed a ton in 30 years. I had a turbo Nissan 200SX that was nothing short of a lemon and had less than 40,000 miles on it. It makes sense to let a turbo charged car to sit for a couple of minutes after running it hard but lets not get silly.
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