Engine: n51 or n52? Help

e92mac · 06-07-2010, 12:14 PM

Hey guys i have to 2010 328i e92 and i was wondering which engine i had N51 or N52?. I havent been able to find it, but i entered my vin in a webpage and it says type of engine: 3.0L I6 DI. whats is this?
My vin starts

wbawb3c55apXXXXXX

Can anyone help me?

Thanks

MOTO69JOE · 06-07-2010, 02:16 PM

I know the 09 had either one. I think it just boils down to whatever they had laying around? As far as I know there is no real difference? Maybe one is California emissions approved?

MOTO69JOE · 06-07-2010, 03:46 PM

Found some info on the engine differences
http://www.e90post.com/forums/showpo...08&postcount=3

Gavin@MMW · 06-07-2010, 03:51 PM

http://www.realoem.com/bmw/select.do

go there, enter the last of your VIN in the Serial # search.

dmaccioc · 12-27-2010, 08:55 PM

my 07 had the n52, my 11 has the n51. only difference i've noticed is a slightly rougher idle on the n51, and lower highway fuel economy by about 2-3mpg on a long trip. if a true power difference exists, it isn't noticeable.

e90pilot · 12-28-2010, 03:21 AM

Hmmm... 3.0 DI? Sounds like an N53, but the US didn't get these. The N52 is the ULEV and the N51 is SULEV (or is it PZEV?) You can tell by the presence of a 3-stage intake manifold. You'll see a box with a cable attached to it right next to the "BMW" on the manifold itself. Thats one of the DISA valves. If you have it, it's an N51. If it's the single stage manifold (ie no valve), its an N52.

Stuart@BMRAutowerkes · 12-28-2010, 03:59 AM

I've got an N52 WITH the disa valve - 2.5L capacity.

OP, best bet is to use the link craven provided.

MrDummy · 02-07-2013, 03:44 PM

Thanks for realoem link, I have an N52N engine with A PPH prduction code?

zxrjt · 06-23-2017, 12:46 PM

Old post, but e90pilot, I believe you have the N51 and N52 backwards where it should be "You'll see a box with a cable attached to it right next to the "BMW" on the manifold itself. Thats one of the DISA valves. If you have it, it's an N52. If it's the single stage manifold (ie no valve), its an N51." According to the Component/System comparison chart of the N52, N52KP and N51 the Intake Manifold specs are:
N52 - Plastic w/ 3-stage DISA on high output (OL)
N52KP - Plastic w/ 3-stage DISA on high out (O)
N51 - Plastic only w/ no DISA

Fume · 06-23-2017, 01:53 PM

Quote:

Originally Posted by zxrjt

Old post, but e90pilot, I believe you have the N51 and N52 backwards where it should be "You'll see a box with a cable attached to it right next to the "BMW" on the manifold itself. Thats one of the DISA valves. If you have it, it's an N52. If it's the single stage manifold (ie no valve), its an N51." According to the Component/System comparison chart of the N52, N52KP and N51 the Intake Manifold specs are:
N52 - Plastic w/ 3-stage DISA on high output (OL)
N52KP - Plastic w/ 3-stage DISA on high out (O)
N51 - Plastic only w/ no DISA

I think you have it backwards here. N52 variants have higher slightly higher compression ratio and no DISA. N51 variants have slightly lower compression ratio but makes up for it with the DISA intake manifold.

Bmw_Crazy · 06-23-2017, 05:36 PM

Quote:

Originally Posted by Fume

I think you have it backwards here. N52 variants have higher slightly higher compression ratio and no DISA. N51 variants have slightly lower compression ratio but makes up for it with the DISA intake manifold.

Your right!

hassmaschine · 06-23-2017, 11:33 PM

Quote:

Originally Posted by e92mac

Hey guys i have to 2010 328i e92 and i was wondering which engine i had N51 or N52?. I havent been able to find it, but i entered my vin in a webpage and it says type of engine: 3.0L I6 DI. whats is this?
My vin starts

wbawb3c55apXXXXXX

Can anyone help me?

Thanks

Just FFI - the last part of your VIN is the important part (7 digits). The first part doesn't tell us anything.

Terraphantm · 06-23-2017, 11:45 PM

Quote:

Originally Posted by hassmaschine

Just FFI - the last part of your VIN is the important part (7 digits). The first part doesn't tell us anything.

The last 7 would be better, but WB3C (=WB33) tells us it's an N52 328 - http://www.bmwarchive.org/code/wb33.html

zxrjt · 01-12-2020, 02:03 PM

Quote:

Originally Posted by Fume

I think you have it backwards here. N52 variants have higher slightly higher compression ratio and no DISA. N51 variants have slightly lower compression ratio but makes up for it with the DISA intake manifold.

Hmm, thanks for the reply. It appears the chart from BMW is wrong under the intake manifold component system https://images.app.goo.gl/xAX9EbL95ybo1f8R6

06-07-2010, 12:14 PM	#1
e92mac Private First Class 32 Rep 135 Posts Drives: BMW 328i coupe 2010 Join Date: Mar 2010 Location: Florida iTrader: (0)	Engine: n51 or n52? Help Hey guys i have to 2010 328i e92 and i was wondering which engine i had N51 or N52?. I havent been able to find it, but i entered my vin in a webpage and it says type of engine: 3.0L I6 DI. whats is this? My vin starts wbawb3c55apXXXXXX Can anyone help me? Thanks
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06-07-2010, 02:16 PM	#2
MOTO69JOE Captain 27 Rep 876 Posts Drives: E46, E90 Join Date: Jul 2007 Location: The South iTrader: (3)	I know the 09 had either one. I think it just boils down to whatever they had laying around? As far as I know there is no real difference? Maybe one is California emissions approved?
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06-07-2010, 03:46 PM	#3
MOTO69JOE Captain 27 Rep 876 Posts Drives: E46, E90 Join Date: Jul 2007 Location: The South iTrader: (3)	Found some info on the engine differences http://www.e90post.com/forums/showpo...08&postcount=3
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06-07-2010, 03:51 PM	#4
Gavin@MMW Brigadier General 406 Rep 3,879 Posts Drives: MMW Supercharged E90 328i Join Date: Nov 2009 Location: 818/805 iTrader: (18)	http://www.realoem.com/bmw/select.do go there, enter the last of your VIN in the Serial # search.
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12-27-2010, 08:55 PM	#5
dmaccioc Enlisted Member 13 Rep 44 Posts Drives: 2019 X5 40i Join Date: May 2008 Location: New York iTrader: (0)	my 07 had the n52, my 11 has the n51. only difference i've noticed is a slightly rougher idle on the n51, and lower highway fuel economy by about 2-3mpg on a long trip. if a true power difference exists, it isn't noticeable.
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12-28-2010, 03:21 AM	#6
e90pilot Freight Dawg 102 Rep 2,103 Posts Drives: E90 325i Join Date: Jul 2005 Location: Oakland, CA iTrader: (3)	Hmmm... 3.0 DI? Sounds like an N53, but the US didn't get these. The N52 is the ULEV and the N51 is SULEV (or is it PZEV?) You can tell by the presence of a 3-stage intake manifold. You'll see a box with a cable attached to it right next to the "BMW" on the manifold itself. Thats one of the DISA valves. If you have it, it's an N51. If it's the single stage manifold (ie no valve), its an N52. __________________ --Marcelo '06 Arctic Metallic 325i \| Sport Package \| 6MT \| Dinan Stage III suspension \| Dinan exhaust \| 330i manifold swap! Click here! \| Active Autowerke tune \| 135i Brake Calipers \| Deiselboost caliper brackets \| E46 M3 front rotors
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12-28-2010, 03:59 AM	#7
Stuart@BMRAutowerkes Major General 808 Rep 5,530 Posts Drives: a black car Join Date: Sep 2010 Location: Sydney iTrader: (3)	I've got an N52 WITH the disa valve - 2.5L capacity. OP, best bet is to use the link craven provided.
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02-07-2013, 03:44 PM	#8
MrDummy →сяuisiиg iи му вмш← 66 Rep 1,642 Posts Drives: 2010 Space Gray 328i Join Date: May 2009 Location: The Unemployment Capitol of America iTrader: (1) Garage List 2010 BMW 328i [0.00]	Thanks for realoem link, I have an N52N engine with A PPH prduction code? __________________ SuPerMoD @ MassMonsterz.com A "Happy" Owner of a Metallic Space Gray 2010 BMW 328i ProGaMeR on the XboX 360
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06-23-2017, 12:46 PM	#9
zxrjt Registered 0 Rep 2 Posts Drives: 2009 328xi Join Date: Mar 2016 Location: Maugansville, MD iTrader: (0)	Old post, but e90pilot, I believe you have the N51 and N52 backwards where it should be "You'll see a box with a cable attached to it right next to the "BMW" on the manifold itself. Thats one of the DISA valves. If you have it, it's an N52. If it's the single stage manifold (ie no valve), its an N51." According to the Component/System comparison chart of the N52, N52KP and N51 the Intake Manifold specs are: N52 - Plastic w/ 3-stage DISA on high output (OL) N52KP - Plastic w/ 3-stage DISA on high out (O) N51 - Plastic only w/ no DISA
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