E90Post
 


Extreme Power House
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > The N54 engine pistons are cast (and not forged).



Reply
 
Thread Tools Search this Thread
      06-07-2011, 07:22 AM   #1
tscdennab
Banned
 
Drives: BMW 335i
Join Date: Oct 2010
Location: Europe

Posts: 1,811
iTrader: (0)

Garage List
2008 BMW  [3.12]
The N54 engine pistons are cast (and not forged).

I have contacted Mahle and gave them all the details needed in order to identify the piston type in the N54 engine (following a rumor stating that they are forged).

Here is an excerpt of the answer I have received:

"Thanks for your reply.

With the chassis number we found more details.
It is a cast piston.

Further we can say, that we have the part only in OE and not in our aftermarket range. "

Last edited by tscdennab; 06-07-2011 at 07:32 AM.
tscdennab is offline  
0
Reply With Quote
      06-07-2011, 07:32 AM   #2
werke-t
Captain
 
Drives: e92 335i
Join Date: Apr 2009
Location: Sarasota, FL

Posts: 688
iTrader: (5)

hmm well I guess the cast piston can handle some serious boost then it seems...

unfor was under the impression everything was forged correct? Wasnt he running 28psi on stock block?

Thanks for the info
werke-t is offline  
0
Reply With Quote
      06-07-2011, 07:34 AM   #3
ridin135
Colonel
 
Drives: 991 C2S
Join Date: Dec 2008
Location: Greenville

Posts: 2,228
iTrader: (7)

Rods are forged
ridin135 is offline  
0
Reply With Quote
      06-07-2011, 07:35 AM   #4
Elie335
ايلي ٣٣٥ هاهاها
 
Elie335's Avatar
 
Drives: Vorsteiner e92
Join Date: Jun 2009
Location: Leb

Posts: 1,446
iTrader: (1)

OP is just jelly because he got a N55
__________________
Elie335 is offline   St Pierre and Miquelon
0
Reply With Quote
      06-07-2011, 07:43 AM   #5
werke-t
Captain
 
Drives: e92 335i
Join Date: Apr 2009
Location: Sarasota, FL

Posts: 688
iTrader: (5)

Quote:
Originally Posted by ridin135 View Post
Rods are forged
So the pistons are the only cast internals? It seems like even though the pistons are cast it they are doing just fine for the power numbers some of these guys are making out here.
werke-t is offline  
0
Reply With Quote
      06-07-2011, 07:58 AM   #6
unfor
Second Lieutenant
 
Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

Posts: 215
iTrader: (0)

Not true.
People have opened the motor and have found the rods / pistns to be forged.
Mahle just looked up a part number.
unfor is offline  
0
Reply With Quote
      06-07-2011, 08:08 AM   #7
Elie335
ايلي ٣٣٥ هاهاها
 
Elie335's Avatar
 
Drives: Vorsteiner e92
Join Date: Jun 2009
Location: Leb

Posts: 1,446
iTrader: (1)

Quote:
Originally Posted by unfor View Post
Not true.
People have opened the motor and have found the rods / pistns to be forged.
Mahle just looked up a part number.
+10000, I'm still searching around to show the OP is totally wrong
__________________
Elie335 is offline   St Pierre and Miquelon
0
Reply With Quote
      06-07-2011, 08:26 AM   #8
enrita
Major General
 
enrita's Avatar
 
Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

Posts: 7,323
iTrader: (0)

my pistons were forged as well as the rods . Confirmed by my shop when they opened the engine.
__________________
07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - Level 10 AT upgrade - Alpina AT Flash
enrita is offline   Sweden
0
Reply With Quote
      06-07-2011, 08:28 AM   #9
unfor
Second Lieutenant
 
Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

Posts: 215
iTrader: (0)

Quote:
Originally Posted by enrita View Post
my pistons were forged as well as the rods . Confirmed by my shop when they opened the engine.
There we go.
Thanks enrita.
unfor is offline  
0
Reply With Quote
      06-07-2011, 09:23 AM   #10
scottp999
Brigadier General
 
scottp999's Avatar
 
Drives: 335i - E92 - 6MT & 4runner SR5
Join Date: Mar 2007
Location: MD

Posts: 4,629
iTrader: (1)

Garage List
2007 BMW 335  [4.50]
Is it possible that both answers are right? That at a certain production date or year BMW changed the part to reduce costs?
__________________
Rob Beck Turbos, PROcede Rev. 3, Procede Fueling Flash (via OpenFlash Tablet), PPS Methanol System (Devil's Own 12 GPH Nozzle/Aquamist Flow Sensor/Labonte VC25), DCI, Quaife LSD, BMW Performance Suspension, Autobahn Exotics Exhaust, Helix FMIC, AR Design Downpipes, BSH Catch Can, Forge Diverter Valves, P3cars Vent Boost Gauge, Alufelgen CSL Reps, Lux 5.1 H8 Angel Eyes, HPB HID Fogs, LTBMW M3 Side Skirts, BMW M3 Rear Spoiler, BMW Front Aero Lip, BMW Pedal Kit, BMW M Shift Knob, Autotecknic Matte Black Grilles.
scottp999 is offline  
0
Reply With Quote
      06-07-2011, 09:30 AM   #11
enrita
Major General
 
enrita's Avatar
 
Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

Posts: 7,323
iTrader: (0)

could be actually see part numbers:
01 Piston (0) 6 07/2007 11257561698 ENDED
01 Piston (0) 6 12/2009 11257577581 $354.95


which could also mean i have cast pistons now which would suck big time...
__________________
07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - Level 10 AT upgrade - Alpina AT Flash
enrita is offline   Sweden
0
Reply With Quote
      06-07-2011, 09:30 AM   #12
BX TT3
MAAD HEAD
 
BX TT3's Avatar
 
Drives: Sex on 19 inch Wheels
Join Date: Jan 2010
Location: NYC

Posts: 1,053
iTrader: (4)

Garage List
08 BMW X5 4.8 (Wife)  [0.00]
07 525xi  [0.00]
07 335i  [4.63]
or that the n55 has cast and the n54 has forged....
__________________

Dinan S2 & JB4 G5, Spearco IC & Up pipe, RR-DP, BMS Dual Air Intake, Forge Diverter Valves, P3 Vent Boost Gauge, Custom Exhaust w/Muffler Delete, BMS OCC, JIC Cross Coils, M3 Front & Rear suspension upgrade, Meyle HD tie Rods
Turbo Upgrade Next...
BX TT3 is offline   No_Country
0
Reply With Quote
      06-07-2011, 09:38 AM   #13
unfor
Second Lieutenant
 
Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

Posts: 215
iTrader: (0)

My N54 motor, build date August 2006, has forged pistons.
N55 has cast ones to save cost.
unfor is offline  
0
Reply With Quote
      06-07-2011, 09:46 AM   #14
werke-t
Captain
 
Drives: e92 335i
Join Date: Apr 2009
Location: Sarasota, FL

Posts: 688
iTrader: (5)

Quote:
Originally Posted by unfor View Post
My N54 motor, build date August 2006, has forged pistons.
N55 has cast ones to save cost.
YAAAY! i have a 11/06 build, got me worried for a minute...

shitty news for n55 guys though.
werke-t is offline  
0
Reply With Quote
      06-07-2011, 09:48 AM   #15
BX TT3
MAAD HEAD
 
BX TT3's Avatar
 
Drives: Sex on 19 inch Wheels
Join Date: Jan 2010
Location: NYC

Posts: 1,053
iTrader: (4)

Garage List
08 BMW X5 4.8 (Wife)  [0.00]
07 525xi  [0.00]
07 335i  [4.63]
LOL... Me too.

One more reason why n54 is superior to n55...
__________________

Dinan S2 & JB4 G5, Spearco IC & Up pipe, RR-DP, BMS Dual Air Intake, Forge Diverter Valves, P3 Vent Boost Gauge, Custom Exhaust w/Muffler Delete, BMS OCC, JIC Cross Coils, M3 Front & Rear suspension upgrade, Meyle HD tie Rods
Turbo Upgrade Next...
BX TT3 is offline   No_Country
0
Reply With Quote
      06-07-2011, 10:15 AM   #16
Litos
Banned
 
Drives: 2012 Challenger RT Junk
Join Date: Dec 2010
Location: Houston/Pearland

Posts: 2,900
iTrader: (1)

holy shit - i learn something new uurrday.

my car has forged pistons/rods.

nice......
Litos is offline   United_States
0
Reply With Quote
      06-07-2011, 10:16 AM   #17
tscdennab
Banned
 
Drives: BMW 335i
Join Date: Oct 2010
Location: Europe

Posts: 1,811
iTrader: (0)

Garage List
2008 BMW  [3.12]
Quote:
Originally Posted by enrita View Post
my pistons were forged as well as the rods . Confirmed by my shop when they opened the engine.
If they were forged maybe your engine wouldn't break ? A forged piston should hold much more power than like 450whp.

I wish they were forged. But why would BMW advertise "forged crankshaft" in their N54 documentation, and not also "forged pistons" ?

Also, how can a shop tell if a piston is cast or forged ?

enrita, did you by any chance noted the piston's "code" which was stamped on it ? I can send that code to someone at Mahle and he can look up for sure.
tscdennab is offline  
0
Reply With Quote
      06-07-2011, 10:19 AM   #18
flip4335
General Nuisance in a Private Conveyance
 
flip4335's Avatar
 
Drives: like it's rented
Join Date: Nov 2008
Location: behind the wheel

Posts: 1,823
iTrader: (1)

Garage List
Quote:
Originally Posted by werke-t View Post
YAAAY! i have a 11/06 build, got me worried for a minute...

shitty news for n55 guys though.
+1. Impressive! Keeping mine forever! LOL
__________________

BMWCCA Member # 414198 Slightly Modded|e90|SGM|6MT|LCI MSport Conversion|MTech|Premium|Cold|Sport|Tint|Blackline |219M|PSS|Quaife|Helix|AR Catted|Cobb
Quaife Review: http://www.e90post.com/forums/showthread.php?t=311570
flip4335 is offline   United_States
0
Reply With Quote
      06-07-2011, 10:24 AM   #19
Stangorang
Major
 
Stangorang's Avatar
 
Drives: 2007 E90 335i
Join Date: Mar 2010
Location: SoCal

Posts: 1,204
iTrader: (9)

Quote:
Originally Posted by tscdennab View Post
If they were forged maybe your engine wouldn't break ? A forged piston should hold much more power than like 450whp.

I wish they were forged. But why would BMW advertise "forged crankshaft" in their N54 documentation, and not also "forged pistons" ?

Also, how can a shop tell if a piston is cast or forged ?

enrita, did you by any chance noted the piston's "code" which was stamped on it ? I can send that code to someone at Mahle and he can look up for sure.
Low blow. You should probably go back and read why it broke. Forged or cast wouldn't have mattered at that point.
Stangorang is offline   United_States
0
Reply With Quote
      06-07-2011, 10:25 AM   #20
Jeff@TopGearSolutions
BimmerPost Supporting Vendor

 
Jeff@TopGearSolutions's Avatar
 
Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com

Posts: 17,107
iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
Quote:
Originally Posted by tscdennab View Post
If they were forged maybe your engine wouldn't break ? A forged piston should hold much more power than like 450whp.

I wish they were forged. But why would BMW advertise "forged crankshaft" in their N54 documentation, and not also "forged pistons" ?

Also, how can a shop tell if a piston is cast or forged ?

enrita, did you by any chance noted the piston's "code" which was stamped on it ? I can send that code to someone at Mahle and he can look up for sure.
His engine didnt break from power....
Jeff@TopGearSolutions is offline   United_States
0
Reply With Quote
      06-07-2011, 10:38 AM   #21
unfor
Second Lieutenant
 
Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

Posts: 215
iTrader: (0)

When I pulled my motor towards the beginning of the ST thread, I can confirm that both components (rods and pistons) are forged. I don't know if this changed during the life of the N54, but I know that for my build date, I can 100% guarantee that both components were forged. Also, the same build date had a bolted diff, so maybe they changed during the switch to welded. Who knows.

Mahle can look up any part number they want, but they haven't looked inside the motor. Multiple shops that have pulled these N54 motors (including Cp-e at the time) have all confirmed these forged internals.
unfor is offline  
0
Reply With Quote
      06-07-2011, 10:42 AM   #22
enrita
Major General
 
enrita's Avatar
 
Drives: 335i - Big turbos
Join Date: Sep 2008
Location: Italian in Sweden

Posts: 7,323
iTrader: (0)

Quote:
Originally Posted by tscdennab View Post
If they were forged maybe your engine wouldn't break ? A forged piston should hold much more power than like 450whp.

I wish they were forged. But why would BMW advertise "forged crankshaft" in their N54 documentation, and not also "forged pistons" ?

Also, how can a shop tell if a piston is cast or forged ?

enrita, did you by any chance noted the piston's "code" which was stamped on it ? I can send that code to someone at Mahle and he can look up for sure.
you are such a douche
__________________
07 335i AT - TD St.2 Turbos - COBB (Custom Cobb mapping by http://www.protuningfreaks.com/) - JB4G5 ISO - Okada Coils - NGK 5992 Plugs - E85 Walbro - Injen Intake - Helix IC - Snow Stg. 3 - Stett CP - AR DPs - midpipes 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - Level 10 AT upgrade - Alpina AT Flash
enrita is offline   Sweden
0
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 09:03 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST