Let's talk M2 N55

G30 B58 · 01-12-2016, 05:56 PM

Where does it get the extra horsepower. Modified N55 internals? Different turbo? Different engine mapping? It's not just an exhaust and certainly not from the intake.

Educate me.

Then maybe we can talk about parts that we might be able to pillage from the M2.

CIWS · 01-12-2016, 06:03 PM

If it is a 55 engine, wouldn't it be like an S55 ?

(only saw it's pwr rating, not engine type for the M2)

G30 B58 · 01-12-2016, 06:09 PM

Quote:

Originally Posted by CIWS

If it is a 55 engine, wouldn't it be like an S55 ?

(only saw it's pwr rating, not engine type for the M2)

Negative. Single twinpower turbo. N55.

CIWS · 01-12-2016, 06:23 PM

Quote:

Originally Posted by F32 N55

Negative. Single twinpower turbo. N55.

Looking at some data of the two, it sounds like it could be. I found this bit a little interesting about recommended octane.

"Rated output: BMW recommends the use of super unleaded 95 RON fuel. Unleaded RON 91 fuel or higher with a maximum ethanol limit of 10 per cent (E10) is also permitted. The performance and fuel consumption rates listed are based on the use of RON 98 fuel."

jinnrice · 01-12-2016, 06:29 PM

Quote:

Originally Posted by CIWS

Quote:

Originally Posted by F32 N55

Negative. Single twinpower turbo. N55.

Looking at some data of the two, it sounds like it could be. I found this bit a little interesting about recommended octane.

"Rated output: BMW recommends the use of super unleaded 95 RON fuel. Unleaded RON 91 fuel or higher with a maximum ethanol limit of 10 per cent (E10) is also permitted. The performance and fuel consumption rates listed are based on the use of RON 98 fuel."

EVo said it was our N55 with some updates and the big (stated above) addition is the twin scroll turbo. Comes to my question. Is our turbo single scroll or twin?

auf Deutsch · 01-12-2016, 07:23 PM

Quote:

Originally Posted by jinnrice

Is our turbo single scroll or twin?

Twin

JayDD007 · 01-12-2016, 07:48 PM

The internals are slightly different, i believe it has pistons and bearings out of an S55. I'm assuming allowing for slightly more boost with no negative affects.

obriennathaniel · 01-13-2016, 02:01 AM

I'll tear my motor apart to install forged Pistons 😁 hopefully they are!

PeterPure · 01-13-2016, 02:28 AM

Quote:

Originally Posted by JayDD007

The internals are slightly different, i believe it has pistons and bearings out of an S55. I'm assuming allowing for slightly more boost with no negative affects.

Correct. M2 will probably just use the same as 235i turbo.

M-terkait · 01-13-2016, 02:30 AM

Quote:

Originally Posted by Darkiedm4

Correct. M2 will probably just use the same as 235i turbo.

probably with a better hpfp

too

PeterPure · 01-13-2016, 05:36 AM

Quote:

Originally Posted by M-terkait

probably with a better hpfp

too

That remains to be seen. But if it does it would be nice to retrofit on our cars

Blubaron79 · 01-13-2016, 12:33 PM

Quote:

Originally Posted by JayDD007

The internals are slightly different, i believe it has pistons and bearings out of an S55. I'm assuming allowing for slightly more boost with no negative affects.

This. It stole some internals from the S55, but is still a single turbo.

mike@x-ph.com · 01-13-2016, 02:07 PM

Quote:

Originally Posted by F32 N55

Where does it get the extra horsepower. Modified N55 internals? Different turbo? Different engine mapping? It's not just an exhaust and certainly not from the intake.

Educate me.

Then maybe we can talk about parts that we might be able to pillage from the M2.

Better internals, more aggressive tuning.
That being said, the current N55 can make this kind of power with little to no effort, BMW detune their engines so they can release a million models

auf Deutsch · 01-13-2016, 02:28 PM

aluminum closed deck also?

greekcs · 01-13-2016, 08:23 PM

same open deck N55

obriennathaniel · 01-13-2016, 09:02 PM

Quote:

Originally Posted by greekcs

same open deck N55

My open deck can handle 27 psi so far ☺️☺️☺️

auf Deutsch · 01-14-2016, 08:41 AM

Quote:

Originally Posted by greekcs

same open deck N55

I read closed somewhere on here...must investigate

auf Deutsch · 01-14-2016, 08:44 AM

•Closed-deck engine (water jacket surrounding the cylinders is sealed at the top, allowing for high cylinder pressures

straight from the spec list on the M2 forum

sly1types · 02-12-2016, 11:13 PM

I thought the N55 engines were all closed deck...

FSociety · 02-13-2016, 03:56 AM

Quote:

Originally Posted by greekcs

same open deck N55

wrong

Quote:

Originally Posted by auf Deutsch

•Closed-deck engine (water jacket surrounding the cylinders is sealed at the top, allowing for high cylinder pressures

straight from the spec list on the M2 forum

+1 yes

Quote:

Originally Posted by sly1types

I thought the N55 engines were all closed deck...

nope, B58 is closed-deck and M2 engine as well

http://f87.bimmerpost.com/forums/sho....php?t=1224109

zinner · 02-13-2016, 08:59 PM

Not sure why it's designated a N55 if the block is different. Odd.

zinner · 02-13-2016, 09:04 PM

Quote:

Originally Posted by auf Deutsch

•Closed-deck engine (water jacket surrounding the cylinders is sealed at the top, allowing for high cylinder pressures

straight from the spec list on the M2 forum

I browsed the M2 tech training PDF and they don't mention anything about closed deck block, just pistons, bearings and oiling system upgrades. I do see a bullet on a forum post, but I would consider it suspect since it's just "reporting" and not a BMW publication.

01-12-2016, 05:56 PM	#1
G30 B58 Pace Car Driver 1548 Rep 3,164 Posts Drives: '22 AW G30 B58 M-Sport Join Date: May 2014 Location: my garage in PA iTrader: (0)	Let's talk M2 N55 Where does it get the extra horsepower. Modified N55 internals? Different turbo? Different engine mapping? It's not just an exhaust and certainly not from the intake. Educate me. Then maybe we can talk about parts that we might be able to pillage from the M2. Last edited by G30 B58; 01-13-2016 at 07:14 AM..
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01-12-2016, 06:03 PM	#2
CIWS Moon Parasite 654 Rep 1,336 Posts Drives: F98 X4M Competition Join Date: Sep 2011 Location: Texas iTrader: (0)	If it is a 55 engine, wouldn't it be like an S55 ? (only saw it's pwr rating, not engine type for the M2) __________________ 2020 X4M Comp. (currently stock) - Was 2015 335 MSport -MPPK -Borla ATAK -Dinan Sport+ - E.R. Charge pipe / 2013 X1 35i Sport - Dinan tune / 2009 X6 50i Dinan badged
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01-12-2016, 07:48 PM	#7
JayDD007 Private First Class 105 Rep 146 Posts Drives: BMW's Join Date: Jan 2014 Location: PA iTrader: (3) Garage List 2020 G07 X7 [0.00] 2013 E70 X5 [0.00] 2003 E46 M3 [0.00] 2013 F10 M5 [0.00] 2009 E90 335ix [0.00] 2009 E90 M3 [0.00]	The internals are slightly different, i believe it has pistons and bearings out of an S55. I'm assuming allowing for slightly more boost with no negative affects.
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01-13-2016, 02:01 AM	#8
obriennathaniel @obriennathaniel_f30 on Instagram 515 Rep 1,063 Posts Drives: 582whp/596wtq '13 335i Join Date: Jan 2014 Location: Houston,Tx ig:obriennathaniel_f30 iTrader: (0)	I'll tear my motor apart to install forged Pistons 😁 hopefully they are!
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01-13-2016, 02:28 PM	#14
auf Deutsch Colonel 1913 Rep 2,210 Posts Drives: '17 jackrabbit on crystal meth Join Date: Dec 2013 Location: Philly burbs iTrader: (0) Garage List 2017 BMW M2 [0.00]	aluminum closed deck also? __________________ 2017 BSM M2\|6MT\|Exec\|black kidneys and gills\|full alcantara wheel\|CF spoiler\|Dinan Stage 4\|Dinan COI\|Dinan free flow exhaust with resonator delete\|Fabspeed sport cat DP\|BMS clutch stop\|465 bhp\|4.75/5 stars retired: 2014 435xi\|MPPK\|335 bhp\|3/5 stars
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01-13-2016, 08:23 PM	#15
greekcs Major 773 Rep 1,113 Posts Drives: 2020 M340i xDrive Join Date: Jan 2010 Location: Long Island, NY iTrader: (0)	same open deck N55 __________________ 2003 11/02 Steel Gray Metallic on Red M3 - SMGII - VF570 - SUPERSPRINT - KW - BBS - CSL ROOF SOLD 2015 09/14 Alpine White on Red 435i xDrive MPPK - Expensive black vinyl with special lettering. SOLD 2020 12/19 Mineral Gray Metallic on Black Vinyl interior M340i xDrive
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01-14-2016, 08:44 AM	#18
auf Deutsch Colonel 1913 Rep 2,210 Posts Drives: '17 jackrabbit on crystal meth Join Date: Dec 2013 Location: Philly burbs iTrader: (0) Garage List 2017 BMW M2 [0.00]	•Closed-deck engine (water jacket surrounding the cylinders is sealed at the top, allowing for high cylinder pressures straight from the spec list on the M2 forum __________________ 2017 BSM M2\|6MT\|Exec\|black kidneys and gills\|full alcantara wheel\|CF spoiler\|Dinan Stage 4\|Dinan COI\|Dinan free flow exhaust with resonator delete\|Fabspeed sport cat DP\|BMS clutch stop\|465 bhp\|4.75/5 stars retired: 2014 435xi\|MPPK\|335 bhp\|3/5 stars
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02-12-2016, 11:13 PM	#19
sly1types Captain 432 Rep 938 Posts Drives: F80M3 and E46M3 Join Date: Apr 2007 Location: KC iTrader: (0)	I thought the N55 engines were all closed deck... __________________ F80 M3-DCT MaxPSI CH, BM3 with F80 Paul E85 and Custom Rom track tune MCS 2Way Remotes Signature SV104 E46 M3 F85 X5M https://www.instagram.com/fastmacm3/
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02-13-2016, 08:59 PM	#21
zinner Major 559 Rep 1,127 Posts Drives: `17 X5 35d/`15 335i/`18 M550IX Join Date: Oct 2014 Location: Raleigh, NC iTrader: (0)	Not sure why it's designated a N55 if the block is different. Odd.
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