N55 Motor is it Forged like its N54 brother?

TheStig · 09-22-2011, 01:49 PM

Any clues?

grandmoff · 09-22-2011, 01:53 PM

no first hand knowledge but it was mentioned by someone in another thread (don't have the link handy) that it was NOT.

Jalndrs · 09-22-2011, 01:54 PM

Cast Iron

TheStig · 09-22-2011, 02:55 PM

Quote:

Originally Posted by Jalndrs

Cast Iron

Is this a guess or actual information.

eyim1988 · 09-22-2011, 03:13 PM

Quote:

Originally Posted by TheStig

Is this a guess or actual information.

im pretty sure its not forged.

Slops · 09-22-2011, 03:16 PM

Search... Been covered that its not forged

N55 · 09-23-2011, 12:19 AM

From all the treads regarding it, they all say NOT forged....... unfortunately.

tibra1 · 09-23-2011, 12:37 AM

No..this is a matter of record already..the n55 is not forged the early n54s are.

theriz · 09-23-2011, 12:38 AM

nope....

jjurroz · 09-23-2011, 11:39 AM

there is no evidence just conjecture

theriz · 09-23-2011, 11:46 AM

Quote:

Originally Posted by jjurroz

there is no evidence just conjecture

pistons and the tranny are not.

Juiced46 · 09-23-2011, 12:44 PM

N54s were never forged, not even early one. This is directly from BMW engineering. The N55 is not forged aswell

ciomas · 09-23-2011, 05:31 PM

I always thought it was only the crank- forged on the n54 in oppose to the n55. Pistons were never forged on neither of the engines. But from what I remember CP Pistons developed forged ones for the n54

Wild Squid · 09-23-2011, 06:27 PM

What's the big deal with forged? I thought cast iron was better anyways?

samchoi604 · 09-23-2011, 06:27 PM

Quote:

Originally Posted by Juiced46

N54s were never forged, not even early one. This is directly from BMW engineering. The N55 is not forged aswell

Checked with Mahle, they made the early pistons for n54 and are forged.

samchoi604 · 09-23-2011, 06:29 PM

Quote:

Originally Posted by Wild Squid

What's the big deal with forged? I thought cast iron was better anyways?

Forged materials are stronger and can be lighter.

Forged wheels = $4000 per set

Cast wheels = $600 per set at mod bargains

PKL · 09-23-2011, 06:36 PM

Quote:

Originally Posted by samchoi604

Forged materials are stronger and can be lighter.

Forged wheels = $4000 per set

Cast wheels = $600 per set at mod bargains

I'm well aware of the difference between a forged wheel and a cast wheel, but I am inclined to say, who cares whether the engine is forged?

People care about forged wheels because wheels get major abuse.

samchoi604 · 09-23-2011, 07:01 PM

You're right, it's not a big deal either way. My guess is that BMW over engineered the early N54 at first because they weren't sure how durable it would be. Over the years, they realized that it's ok to switch to cast and save a ton of money.

tibra1 · 09-23-2011, 07:17 PM

Quote:

Originally Posted by Juiced46

N54s were never forged, not even early one. This is directly from BMW engineering. The N55 is not forged aswell

Where?..e-mail, proof>>> are we suppose to take ur word..others have opened the motor and confirmed forged internals on early n54

tibra1 · 09-23-2011, 07:19 PM

Quote:

Originally Posted by PKL

I'm well aware of the difference between a forged wheel and a cast wheel, but I am inclined to say, who cares whether the engine is forged?

People care about forged wheels because wheels get major abuse.

And the engine doesnt?..especially when u run 20 psi thru it..

Juiced46 · 09-23-2011, 08:22 PM

Quote:

Originally Posted by ciomas

I always thought it was only the crank- forged on the n54 in oppose to the n55. Pistons were never forged on neither of the engines. But from what I remember CP Pistons developed forged ones for the n54

You are 100% correct. The crank is forged, the pistons and rods are not

Quote:

Originally Posted by Wild Squid

What's the big deal with forged? I thought cast iron was better anyways?

Forged is much much stronger and can handle more power.

Quote:

Originally Posted by tibra1

Where?..e-mail, proof>>> are we suppose to take ur word..others have opened the motor and confirmed forged internals on early n54

I work for BMW. I spoke with multiple engineers about this subject on my many visits to BMW of North America, face to face. They assured me, the pistons and rods are NOT forged and they NEVER were forged. Also not one bit of any of my training manuals for N54 nor N55 state the Pistons or Rods are forged. Yes you should take my word for it. Would you rather take the word of some guy on the "internetz" that heard it from someone else, that read it somewhere else on the internet? Or would you rather take it from someone in the field that deals with these cars day in and day out? I would love to see the proof of the people that opened the motor up and found forged internals. Do you have a link with pics? Or did you just read it in a post? Every disassembled N54 and N55 I have see apart had steel rods and hyperutectic pistons. I have disassembled N54s and N55s and never once have seen it with forged parts aside from the crank. Plus I know the difference between a stamped steel part, and a forged part. I have built a "few" 800+ HP cars, I know a thing or 2 about internals. If you do not want to believe me that is fine, it doesnt hurt me at all. I am just telling you what I have seen in the field and what I was told multiple times by multiple engineers for BMW

tibra1 · 09-23-2011, 08:31 PM

Quote:

Originally Posted by Juiced46

I work for BMW. I spoke with multiple engineers about this subject on my many visits to BMW of North America, face to face. They assured me, the pistons and rods are NOT forged and they NEVER were forged. Also not one bit of any of my training manuals for N54 nor N55 state the Pistons or Rods are forged. Yes you should take my word for it. Would you rather take the word of some guy on the "internetz" that heard it from someone else, that read it somewhere else on the internet? Or would you rather take it from someone in the field that deals with these cars day in and day out? I would love to see the proof of the people that opened the motor up and found forged internals. Do you have a link with pics? Or did you just read it in a post? Every disassembled N54 and N55 I have see apart had steel rods and hyperutectic pistons. I have disassembled N54s and N55s and never once have seen it with forged parts aside from the crank. Plus I know the difference between a stamped steel part, and a forged part. I have built a "few" 800+ HP cars, I know a thing or 2 about internals. If you do not want to believe me that is fine, it doesnt hurt me at all. I am just telling you what I have seen in the field and what I was told multiple times by multiple engineers for BMW

Well i guess thats that.

09-22-2011, 01:49 PM	#1
TheStig Captain 52 Rep 794 Posts Drives: Alot of everything. Join Date: Jan 2011 Location: Potomac MD iTrader: (4)	N55 Motor is it Forged like its N54 brother? Any clues? __________________ Gone But Not forgotten: -07 Shelby GT500 W/ Full Bolt on E85 -08 335i 6MT W/ Full Bolt On E85/Meth -08 M3 DCT W/ Full Exhaust / Tune -13 B8 Audi S4 APR Stage 2+
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09-22-2011, 01:53 PM	#2
grandmoff Private First Class 3 Rep 144 Posts Drives: 2011 e92 335i M-Sport 6MT Join Date: Jan 2011 Location: Atlanta iTrader: (1)	no first hand knowledge but it was mentioned by someone in another thread (don't have the link handy) that it was NOT.
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09-22-2011, 01:54 PM	#3
Jalndrs Second Lieutenant 27 Rep 248 Posts Drives: 2015 F15 35i Join Date: Aug 2010 Location: Boston iTrader: (0)	Cast Iron
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09-22-2011, 03:16 PM	#6
Slops Major General 188 Rep 5,417 Posts Drives: 2005 C55 AMG Join Date: Jan 2011 Location: Oxford iTrader: (2)	Search... Been covered that its not forged
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09-23-2011, 12:19 AM	#7
N55 ⒸⒺⓇⓉⓘⒻⒾⒺⒹ✬ⓃⒾⓃⒿⒶ 137 Rep 1,475 Posts Drives: 🚀 Join Date: Nov 2010 Location: Pittsburgh iTrader: (3) Garage List 2015 BMW M4 [0.00] 2012 BMW 335IS (SOLD) [6.84] 2011 BMW 335XI (SOLD) [4.66] 2008 BMW 335xi (SOLD) [10.00]	From all the treads regarding it, they all say NOT forged....... unfortunately.
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09-23-2011, 12:37 AM	#8
tibra1 Banned 127 Rep 6,773 Posts Drives: 2011 ZCP M3 - 2007 335i crashd Join Date: Apr 2009 Location: NYC iTrader: (4)	No..this is a matter of record already..the n55 is not forged the early n54s are.
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09-23-2011, 12:38 AM	#9
theriz Brigadier General 406 Rep 3,583 Posts Drives: 2017 M3 Join Date: Feb 2011 Location: Ventura County, CA iTrader: (2) Garage List 2017 F80 M3 [0.00] 2011 335i M-Sport [4.00] 2015 M3 [0.00] 2009 X5 [10.00]	nope.... __________________ 2017 F80 YMB, ZCP, ZEC, ZLP, DCT. Production Date: 7/15/16
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09-23-2011, 11:39 AM	#10
jjurroz Second Lieutenant 24 Rep 269 Posts Drives: 2018 F80 M3 ZCP Join Date: Sep 2010 Location: Ft. Lauderdale, FL iTrader: (0)	there is no evidence just conjecture
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09-23-2011, 12:44 PM	#12
Juiced46 Major 74 Rep 1,035 Posts Drives: 03 Turbo Cobra, 2011 335xi Join Date: Jun 2010 Location: Wallingford CT iTrader: (3)	N54s were never forged, not even early one. This is directly from BMW engineering. The N55 is not forged aswell
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09-23-2011, 05:31 PM	#13
ciomas Captain 30 Rep 679 Posts Drives: M4 Join Date: Feb 2010 Location: 3city PL iTrader: (0)	I always thought it was only the crank- forged on the n54 in oppose to the n55. Pistons were never forged on neither of the engines. But from what I remember CP Pistons developed forged ones for the n54 __________________ 335 - Öhlins//Swift//M3 front suspension//M3 subframe bushes//Quaife LSD//AR Design Catless//Forge Intercooler//Alcon BBK//Goodridge//AFE//RPI//Fenders - SOLD M4-Mineral Gray/Full Shakir Orange/DCT/M Ceramic/M Adaptive Susp.
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09-23-2011, 06:27 PM	#14
Wild Squid Banned 21 Rep 626 Posts Drives: 2011 BMW 335i coupe Msport AW Join Date: Mar 2011 Location: Nor Cal iTrader: (0)	What's the big deal with forged? I thought cast iron was better anyways?
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09-23-2011, 07:01 PM	#18
samchoi604 Colonel 60 Rep 2,334 Posts Drives: black on black Join Date: Mar 2009 Location: Burnaby, BC iTrader: (3)	You're right, it's not a big deal either way. My guess is that BMW over engineered the early N54 at first because they weren't sure how durable it would be. Over the years, they realized that it's ok to switch to cast and save a ton of money.
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