Explain to me why bmw preaches proper break in and they put the cars on the dyno ?

Potty_Pants · 04-26-2007, 07:24 AM

Now I understand proper break in is necessary on some cars to properly seat the valves and such... so why does bmw toss our cars on a Dyno prior to leaving the factory? I undestand the reason why... however i see a contradiction in their action and recommendations. Kinda like infiniti saying easy on the beak in and they test drive the cars around a test track and put a smiley face on the test card.

ppp

p.s. car is finished production , released to carrier and awaiting shipping to dock.

E90Fleet · 04-26-2007, 07:32 AM

Its a very short dyno, lasting less than 2 minutes, just to check the functioning of the car

Its a insignificant amount of miles

Potty_Pants · 04-26-2007, 07:36 AM

I know dyno's are usually short runs, but they are taking a FRESH car and stressing it out immediately w/ or w/o sufficient warmup (warmup duration unknown).

I see the value in a dyno but also see the damage 0 to redline can do on a fresh engine.

edit: lol i guess in retrospec... if they are recommending 15k or so on oil changes... i guess that says it all.

ppp

E90Fleet · 04-26-2007, 07:40 AM

Quote:

Originally Posted by Potty_Pants

I know dyno's are usually short runs, but they are taking a FRESH car and stressing it out immediately w/ or w/o sufficient warmup (warmup duration unknown).

I see the value in a dyno but also see the damage 0 to redline can do on a fresh engine.

ppp

The cars have run for several minutes before going into the "Dyno"

they are started, wait in line, then go into wheel alignment, then wait again, then onto the machine, with the enigne haiving been running all the time.

Its also not a Dyno like you get in a tuners shop, that stresses the engine all the time.

They slowly and evenly run the car to top speed and back down, before the car then drives off to the headlight section

the engine is put through as little stress as possible

Potty_Pants · 04-26-2007, 07:50 AM

thanks for the info !

ppp

LEDZEP · 04-26-2007, 07:51 AM

Also, keep in mind that it is RPM that you need to govern during break in, not necessarily speed. They run the cars up to full speed (or close) on the dyno but I doubt they over-rev the engine doing so.

The Cleaner · 04-26-2007, 09:24 AM

Quote:

Originally Posted by Potty_Pants

Now I understand proper break in is necessary on some cars to properly seat the valves and such... so why does bmw toss our cars on a Dyno prior to leaving the factory? I undestand the reason why... however i see a contradiction in their action and recommendations. Kinda like infiniti saying easy on the beak in and they test drive the cars around a test track and put a smiley face on the test card.

ppp

p.s. car is finished production , released to carrier and awaiting shipping to dock.

Just curious are you referring to the 2 sentences in the manual about break in? Thats hardly preaching, in fact I don't think may people even see it.

ALPINE6SPD · 04-26-2007, 09:30 AM

Quote:

Originally Posted by E90Fleet

The cars have run for several minutes before going into the "Dyno"

they are started, wait in line, then go into wheel alignment, then wait again, then onto the machine, with the enigne haiving been running all the time.

Its also not a Dyno like you get in a tuners shop, that stresses the engine all the time.

They slowly and evenly run the car to top speed and back down, before the car then drives off to the headlight section

the engine is put through as little stress as possible

who do you work for fleet? I see you want a job with BMW and I am just curious as to what you do.

E90Fleet · 04-26-2007, 09:40 AM

Quote:

Originally Posted by ALPINE6SPD

who do you work for fleet? I see you want a job with BMW and I am just curious as to what you do.

Currently im looking for a job = unemployed

My day job qualification is Accounting, but thats just because we dont have any real aerospace engineering jobs here ( so never completed my Engineering degree

)

LEDZEP · 04-26-2007, 09:44 AM

Quote:

Originally Posted by E90Fleet

Currently im looking for a job = unemployed

My day job qualification is accounting, but thats just because we dont have any real aerospace engineering jobs here

That is a crime!! Your talent should not be wasted.

Viral · 04-26-2007, 09:44 AM

LOL at "break-in".........They're not shoes ;-)

E90Fleet · 04-26-2007, 09:52 AM

Quote:

Originally Posted by LEDZEP

That is a crime!! Your talent should not be wasted.

Well sponsor me a greencard

LEDZEP · 04-26-2007, 10:03 AM

Quote:

Originally Posted by E90Fleet

Well sponsor me a greencard

I would in a minute... if I could!

F32Fleet · 04-26-2007, 02:27 PM

Quote:

Originally Posted by Potty_Pants

Now I understand proper break in is necessary on some cars to properly seat the valves and such... so why does bmw toss our cars on a Dyno prior to leaving the factory? I undestand the reason why... however i see a contradiction in their action and recommendations. Kinda like infiniti saying easy on the beak in and they test drive the cars around a test track and put a smiley face on the test card.

ppp

p.s. car is finished production , released to carrier and awaiting shipping to dock.

IMO it's done to prevent X # of owners complaining about how much oil their car is burning, rather than insuring long engine life.

F32Fleet · 04-26-2007, 02:33 PM

Quote:

Originally Posted by E90Fleet

Currently im looking for a job = unemployed

My day job qualification is accounting, but thats just because we dont have any real aerospace engineering jobs here

I know someone who works for Lockeed Martin. PM me if you're interested.

E90330iS · 04-26-2007, 02:47 PM

I think the speed is relatively important also. On the user manual it states not to take the car over 4500 RPM and 100 MPH!

Drew Mazurek · 04-26-2007, 02:54 PM

Do as I say not as I do.

E90Fleet · 04-26-2007, 02:55 PM

Quote:

Originally Posted by Socom

I know someone who works for Lockeed Martin. PM me if you're interested.

Thanks, but last time I looked into it there i found they had difficulty taking non-US citizens due to there large number of Us goverment contracts

But thanks again for the offer

E90Fleet · 04-26-2007, 02:56 PM

Quote:

Originally Posted by E90330iS

I think the speed is relatively important also. On the user manual it states not to take the car over 4500 RPM and 100 MPH!

The top speed limit is to allow things like wheel bearings and the rear differential to settle/break in

Shawn_speed · 04-26-2007, 04:57 PM

The break in has a totally different aspect to it which is indpendent of the dyno test at the factory. It is a safety issue.

The break in is not just for the engine or the drivetrain. The brakes and tires require break in as well.

Shawn
Phoenix

RGB · 04-27-2007, 05:39 AM

If you trust BMW engineers to the point of buyng their cars, why don't you trust them in the way they condition and test them?

dxb335d · 04-27-2007, 06:55 AM

think about it, your cars going to get a hammering by the underpaid dock staff anyhow from the lorries to the boats and otherway roudn and so on, they cant afford such nice cars so you bet your bottom dollar them give them the redline inthe 0.25- 1 mile they drive them, so running in effectively goes out the window

thats why the procedure is not that strict

but if you blew up your engine and had another fitted by bmw then this one woudl have had absolutely no running because it has been fitted in a car and then the 'running in' strict procedure would apply

carl

04-26-2007, 07:24 AM	#1
Potty_Pants Colonel 66 Rep 2,189 Posts Drives: 2012 Genesis Sedan Rspec Join Date: Apr 2007 Location: Southern NJ iTrader: (0)	Explain to me why bmw preaches proper break in and they put the cars on the dyno ? Now I understand proper break in is necessary on some cars to properly seat the valves and such... so why does bmw toss our cars on a Dyno prior to leaving the factory? I undestand the reason why... however i see a contradiction in their action and recommendations. Kinda like infiniti saying easy on the beak in and they test drive the cars around a test track and put a smiley face on the test card. ppp p.s. car is finished production , released to carrier and awaiting shipping to dock. __________________ Olds Starfire > Chevy Malibu > Isuzu I-mark RS & Honda Magna 500 > Grand Am GT & YSR50 > Nissan Maxima & Ninja 750 > X-Wife > Hyundai Excel > Honda Prelude > Honda Accord > Honda Prelude & Ninja 250> Infiniti G35 > E90 335i > Hyundai Genesis Rspec, Hyunadai Sonata > Kia Sorento > Honda CRV-EX
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04-26-2007, 07:32 AM	#2
E90Fleet Lieutenant General 1312 Rep 10,185 Posts Drives: BMW Join Date: Apr 2005 Location: South Africa iTrader: (0)	Its a very short dyno, lasting less than 2 minutes, just to check the functioning of the car Its a insignificant amount of miles __________________ BMW if you are reading, I need a job, Please.
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04-26-2007, 07:36 AM	#3
Potty_Pants Colonel 66 Rep 2,189 Posts Drives: 2012 Genesis Sedan Rspec Join Date: Apr 2007 Location: Southern NJ iTrader: (0)	I know dyno's are usually short runs, but they are taking a FRESH car and stressing it out immediately w/ or w/o sufficient warmup (warmup duration unknown). I see the value in a dyno but also see the damage 0 to redline can do on a fresh engine. edit: lol i guess in retrospec... if they are recommending 15k or so on oil changes... i guess that says it all. ppp __________________ Olds Starfire > Chevy Malibu > Isuzu I-mark RS & Honda Magna 500 > Grand Am GT & YSR50 > Nissan Maxima & Ninja 750 > X-Wife > Hyundai Excel > Honda Prelude > Honda Accord > Honda Prelude & Ninja 250> Infiniti G35 > E90 335i > Hyundai Genesis Rspec, Hyunadai Sonata > Kia Sorento > Honda CRV-EX
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04-26-2007, 07:50 AM	#5
Potty_Pants Colonel 66 Rep 2,189 Posts Drives: 2012 Genesis Sedan Rspec Join Date: Apr 2007 Location: Southern NJ iTrader: (0)	thanks for the info ! ppp __________________ Olds Starfire > Chevy Malibu > Isuzu I-mark RS & Honda Magna 500 > Grand Am GT & YSR50 > Nissan Maxima & Ninja 750 > X-Wife > Hyundai Excel > Honda Prelude > Honda Accord > Honda Prelude & Ninja 250> Infiniti G35 > E90 335i > Hyundai Genesis Rspec, Hyunadai Sonata > Kia Sorento > Honda CRV-EX
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04-26-2007, 07:51 AM	#6
LEDZEP Lieutenant General 418 Rep 12,276 Posts Drives: 2009 E70 & 2011 F25 Join Date: Jun 2005 Location: Area 51 iTrader: (0) Garage List 2011 X3 35i M Sport [7.62] 2009 X5 M Sport [0.00] 2007 328xi E90 [0.00] 2006 325xiT E91 [0.00]	Also, keep in mind that it is RPM that you need to govern during break in, not necessarily speed. They run the cars up to full speed (or close) on the dyno but I doubt they over-rev the engine doing so. __________________ I think it is bad luck to be superstitious
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04-26-2007, 09:44 AM	#11
Viral Major 41 Rep 1,003 Posts Drives: '06 330i Join Date: Jul 2006 Location: NYC/T.O. iTrader: (1)	LOL at "break-in".........They're not shoes ;-)
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04-26-2007, 02:47 PM	#16
E90330iS Major General 143 Rep 6,333 Posts Drives: BMW M4 Join Date: Jan 2006 Location: Arcadia, California iTrader: (56) Garage List 2006 330i [0.00]	I think the speed is relatively important also. On the user manual it states not to take the car over 4500 RPM and 100 MPH! __________________ 2017 BMW M4 DCT Lease Transfer: https://f80.bimmerpost.com/forums/sh...8#post23736398
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04-26-2007, 02:54 PM	#17
Drew Mazurek Private First Class 4 Rep 123 Posts Drives: 328Xi Coupe Join Date: Mar 2007 Location: Greenspring Valley, MD USA iTrader: (0) Garage List 2007 E92 328Xi [0.00]	Do as I say not as I do.
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04-26-2007, 04:57 PM	#20
Shawn_speed Private First Class 7 Rep 173 Posts Drives: e90 335i 6Sp. Join Date: Jul 2006 Location: Phoenix iTrader: (2)	The break in has a totally different aspect to it which is indpendent of the dyno test at the factory. It is a safety issue. The break in is not just for the engine or the drivetrain. The brakes and tires require break in as well. Shawn Phoenix
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04-27-2007, 05:39 AM	#21
RGB Private First Class 8 Rep 178 Posts Drives: 325i Auto.Active Steering Join Date: May 2005 Location: Sevilla Spain iTrader: (0)	If you trust BMW engineers to the point of buyng their cars, why don't you trust them in the way they condition and test them? __________________ [IMG][/IMG] Last edited by RGB; 04-27-2007 at 06:04 AM..
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04-27-2007, 06:55 AM	#22
dxb335d The Tarmac Terrorist 949 Rep 29,345 Posts Drives: 997.2 GT3 Join Date: Mar 2007 Location: ''Fandango Towers'' iTrader: (3) Garage List 2010 Porsche 997.2 GT3 [9.50] 2003 BMW E46 M3 [6.00] 2007 BMW E92 335D [5.50]	think about it, your cars going to get a hammering by the underpaid dock staff anyhow from the lorries to the boats and otherway roudn and so on, they cant afford such nice cars so you bet your bottom dollar them give them the redline inthe 0.25- 1 mile they drive them, so running in effectively goes out the window thats why the procedure is not that strict but if you blew up your engine and had another fitted by bmw then this one woudl have had absolutely no running because it has been fitted in a car and then the 'running in' strict procedure would apply carl
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