E90Post
 


Sparta Evolution
 
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
      06-08-2011, 09:02 PM   #155
jb's335
Big Boost Addict
United_States
21
Rep
684
Posts

Drives: AW e92 335
Join Date: Aug 2008
Location: Lima, OH

iTrader: (12)

Quote:
Originally Posted by Elie335 View Post
good point.
Not really...

BMW would still not know if you were overboosting your motor just by switching to cast pistons. They would still be able to handle a moderate increase in boost from a tune, and its not like BMW takes the pistons out to inspect them when they suspect you have been modding your car. Yes it would be a deterrent to boosting the motor more because it wouldn't be as strong but I guarantee most people who do bolt-on's do not know what kind of internals their engine has.
__________________
FFTEC 62mm...yeah I think that about does it.
Appreciate 0
      06-08-2011, 09:23 PM   #156
Prince ///M
Second Lieutenant
2
Rep
202
Posts

Drives:
Join Date: Dec 2007

iTrader: (0)

Quote:
Originally Posted by tscdennab View Post
My car's VIN was checked by Mahle and it they said it is cast. And my car is built in October 2008 (second LCI build week).

I have no doubt that the pistons in all the N54 engines are manufactured using the same technology (either cast or forged). It would be stupid for BMW to switch to cast pistons and then release the 1M and 335is with more power and torque.

N54 engine longevity may be explained by the brilliant knock protection in the MSD80/81 DMEs.

My question still remains, for those who say their pistons are forged, how can you tell visually ? Also, it's strange that no one noted a piston code when they inspected their pistons ?

Other sad news is that Mahle said that they do not manufacture aftermarket forged piston kits for the N54 engine
They do not produce AFTERMARKET pistons for the N54... true.

BUT

They actually produce stock forged pistons for Alpina B3 engine which is... guess what? An N54 with low compression forged Mahle pistons.


So, if you want an useless upgrade for your engine (pistons are already forged), ask them for the Alpina components.
Appreciate 0
      06-08-2011, 10:43 PM   #157
BX TT3
MAAD HEAD
BX TT3's Avatar
No_Country
16
Rep
1,060
Posts

Drives: Sex on 19 inch Wheels
Join Date: Jan 2010
Location: NYC

iTrader: (4)

Garage List
08 BMW X5 4.8 (Wife)  [0.00]
07 525xi  [0.00]
07 335i  [4.63]
Quote:
Originally Posted by cn555ic View Post
Where in the world did you get this info from? Is this legit or
Definitely not legit but figured it made hella sense as to why they would switch if they did...

Btw I'm 11/06 so I could care less cuz I'M GOOD!!!
__________________

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...
Appreciate 0
      06-09-2011, 02:09 AM   #158
ttbmer
Lieutenant Colonel
United_States
22
Rep
1,847
Posts

Drives: space gray on black 07 335i
Join Date: Jul 2010
Location: las Vegas nv

iTrader: (15)

Send a message via MSN to ttbmer Send a message via Skype™ to ttbmer
Quote:
Originally Posted by M335i Oreo Package View Post
Quote:
Originally Posted by cn555ic View Post
Where in the world did you get this info from? Is this legit or
Definitely not legit but figured it made hella sense as to why they would switch if they did...

Btw I'm 11/06 so I could care less cuz I'M GOOD!!!
1 ^ hahaha me too
__________________
PROCEDE, PWM Vishnu Kit, AR catless DP, BMS DCI, Helix IC, P3 gauge, 25% window tint, mattblack window trim, mattblack roof wrapped. Vorstainer CSL trunk, CF wrapped interior, 18'' Forgestar F14 Matt black, quaife LSD, M3 suspension bits, Mtech front bumper). http://www.youtube.com/watch?v=b8JIB8C8HDA
Appreciate 0
      06-09-2011, 06:51 AM   #159
Bash
First Lieutenant
Bash's Avatar
3
Rep
395
Posts

Drives: E92-335i
Join Date: Jan 2011
Location: Beirut

iTrader: (0)

90% who posted here make no more than 380/380 whp/tq, and cast pistons can easily handle that. I for one have 10/06 model and i couldnt care less as i would never make more than 400whp.
With that said, i wanted to make sure so i called engine building pros, and made an appointment, when i got there they were eager to know to, so after 2 hours of tearing s h i t apart, they took the pistons out, compared it to a set they had and guess what..... They were made out of silk.... lol
Appreciate 0
      06-09-2011, 06:03 PM   #160
MKE_M3
Lieutenant Colonel
MKE_M3's Avatar
United_States
23
Rep
1,693
Posts

Drives: 2011 e90 M3
Join Date: Feb 2009
Location: Milwaukee, WI

iTrader: (0)

not all casting is the same, perhaps they are cast under high pressures or under other prop technology that give them similar quality to forged?!?!
__________________
Appreciate 0
      06-09-2011, 06:55 PM   #161
rader1
Banned
34
Rep
2,197
Posts

Drives: Cobb Stage 2+ 135i
Join Date: Apr 2011
Location: Roanoke, VA

iTrader: (0)

You're talking about hyperuetectic pistons, which are piston that have silica contet of over 12%. They were developed as a good alternative to forged pistons. Old school forged piston used to be "smaller" than a cast piston at cold startup due to the fact that they expanded more when hot. 'Hypers' are stronger than cast but didn't have the problem of a loose bore when cold. But, that was a while back. They've pretty much got the metallurgy on the forged down to where the difference is inconsequential and more than acceptable in an engine designed to last 100k miles
Appreciate 0
      06-09-2011, 07:05 PM   #162
Jimefam
Second Lieutenant
6
Rep
219
Posts

Drives: 2011 550I Msport
Join Date: Jul 2010
Location: Cumming, Ga

iTrader: (0)

The ignorance is strong in this thread! Oh btw RB26 engines=forged crank and cast pistons which have held up to over 900whp on a completely stock block. Lol at the guy going off and cursing how carefully the shop had examined his "forged" pistons only to hear the bottom end wasn't touched.
Appreciate 0
      06-09-2011, 07:08 PM   #163
unfor
Second Lieutenant
2
Rep
215
Posts

Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

iTrader: (0)

Quote:
Originally Posted by Jimefam View Post
The ignorance is strong in this thread! Oh btw RB26 engines=forged crank and cast pistons which have held up to over 900whp on a completely stock block. Lol at the guy going off and cursing how carefully the shop had examined his "forged" pistons only to hear the bottom end wasn't touched.
That was a joke.

Anyway, I have again confirmed that the pistons are forged in my 08/2006 build.
Appreciate 0
      06-09-2011, 07:10 PM   #164
Forcefed3
Banned
No_Country
65
Rep
4,742
Posts

Drives: 2008 335i
Join Date: May 2010
Location: South

iTrader: (2)

Garage List
2008 335i  [0.50]
Quote:
Originally Posted by Jimefam View Post
The ignorance is strong in this thread! Oh btw RB26 engines=forged crank and cast pistons which have held up to over 900whp on a completely stock block. Lol at the guy going off and cursing how carefully the shop had examined his "forged" pistons only to hear the bottom end wasn't touched.
Yeah lol at the guy who has the highest N54 dyno so far, you're right. :facepalm:
Appreciate 0
      06-09-2011, 07:10 PM   #165
Elie335
ايلي ٣٣٥ هاهاها
Elie335's Avatar
St Pierre and Miquelon
27
Rep
1,448
Posts

Drives: Vorsteiner e92
Join Date: Jun 2009
Location: Leb

iTrader: (1)

Quote:
Originally Posted by unfor View Post
That was a joke.

Anyway, I have again confirmed that the pistons are forged in my 08/2006 build.
I believe you, but how did you get confirmed again?
__________________
Appreciate 0
      06-09-2011, 07:11 PM   #166
cn555ic
BimmerPost Supporting Vendor
cn555ic's Avatar
United_States
249
Rep
18,292
Posts


Drives: Bimmerscoding.com
Join Date: Jun 2007
Location: New York

iTrader: (5)

Send a message via Yahoo to cn555ic
Quote:
Originally Posted by Jimefam View Post
The ignorance is strong in this thread! Oh btw RB26 engines=forged crank and cast pistons which have held up to over 900whp on a completely stock block. Lol at the guy going off and cursing how carefully the shop had examined his "forged" pistons only to hear the bottom end wasn't touched.
Regardless if its ignorance, there is some truth to it that going from forge to cast is equating to dollar savings for BMW, and I honestly think thats the reasoning behind it...Whether or not it can hold the same power ratio thats to be debated, on the other hand I am glad I the forged
__________________
917-939-4980 CODING E and F Series New York Area

Appreciate 0
      06-09-2011, 07:14 PM   #167
Jeff@TopGearSolutions
BimmerPost Supporting Vendor
Jeff@TopGearSolutions's Avatar
United_States
277
Rep
19,257
Posts


Drives: C6 Z06, GSXR-750, 09 335i
Join Date: Dec 2008
Location: TopGearSolutions.com

iTrader: (32)

Send a message via AIM to Jeff@TopGearSolutions
Quote:
Originally Posted by M335i Oreo Package View Post
So the reason they changed from forged to cast in the middle of production was to keep people from running insane boost, which they knew was possible with forged pistons. Now cast pistons are now put into all of the motors (1m 335is & 335i)so that if you run excessive amounts of boost your warranty will be voided.

Sincerely,
Hanz Gruber
Director of tune detection
Hanz Gruber?!

From die harD?! lol
Appreciate 0
      06-09-2011, 07:27 PM   #168
Jimefam
Second Lieutenant
6
Rep
219
Posts

Drives: 2011 550I Msport
Join Date: Jul 2010
Location: Cumming, Ga

iTrader: (0)

Quote:
Originally Posted by Forcefed3 View Post
Yeah lol at the guy who has the highest N54 dyno so far, you're right. :facepalm:
I couldn't care less who is making what power that has nothing to do with his story, hats off to your tuner though. And yes I find it funny that someone adamantly assures everyone how carefully his pistons were inspected and they weren't even looked. Also he wasn't the one spouting off alot of ignorance. More psi=more power? Lol NO that is not correct. No ones uses forged crankshafts and cast pistons? lol NO that is not true. The pistons aren't made out of aluminum they're made out of FORGED!? LOL I suppose that's the reason why 660 is the highest HP after so many years of the N54 being out.
Appreciate 0
      06-09-2011, 07:30 PM   #169
Forcefed3
Banned
No_Country
65
Rep
4,742
Posts

Drives: 2008 335i
Join Date: May 2010
Location: South

iTrader: (2)

Garage List
2008 335i  [0.50]
Yes, there is plenty of fail in the thread. I was specifically talking about unfor.
Appreciate 0
      06-09-2011, 07:30 PM   #170
bimmertt
Lieutenant Colonel
bimmertt's Avatar
27
Rep
1,678
Posts

Drives: 2007 e92 335i
Join Date: Nov 2008
Location: Earth

iTrader: (7)

Quote:
Originally Posted by Jimefam View Post
I couldn't care less who is making what power that has nothing to do with his story, hats off to your tuner though. And yes I find it funny that someone adamantly assures everyone how carefully his pistons were inspected and they weren't even looked. Also he wasn't the one spouting off alot of ignorance. More psi=more power? Lol NO that is not correct. No ones uses forged crankshafts and cast pistons? lol NO that is not true. The pistons aren't made out of aluminum they're made out of FORGED!? LOL I suppose that's the reason why 660 is the highest HP after so many years of the N54 being out.


This thread is full of speculation (some of which has been noted as fact) and misinformation.
Appreciate 0
      06-09-2011, 08:28 PM   #171
cn555ic
BimmerPost Supporting Vendor
cn555ic's Avatar
United_States
249
Rep
18,292
Posts


Drives: Bimmerscoding.com
Join Date: Jun 2007
Location: New York

iTrader: (5)

Send a message via Yahoo to cn555ic
Quote:
Originally Posted by Jimefam View Post
I couldn't care less who is making what power that has nothing to do with his story, hats off to your tuner though. And yes I find it funny that someone adamantly assures everyone how carefully his pistons were inspected and they weren't even looked. Also he wasn't the one spouting off alot of ignorance. More psi=more power? Lol NO that is not correct. No ones uses forged crankshafts and cast pistons? lol NO that is not true. The pistons aren't made out of aluminum they're made out of FORGED!? LOL I suppose that's the reason why 660 is the highest HP after so many years of the N54 being out.
Can you post link of who is making this 660 HP? I have not seen this at all..
__________________
917-939-4980 CODING E and F Series New York Area

Appreciate 0
      06-09-2011, 08:35 PM   #172
mithiral67
That guy
mithiral67's Avatar
70
Rep
5,724
Posts

Drives: 2015 Cayman GTS
Join Date: Jun 2008
Location: Chicago Burbs

iTrader: (4)

Garage List
http://www.e90post.com/forums/showpo...&postcount=359
Appreciate 0
      06-09-2011, 09:41 PM   #173
unfor
Second Lieutenant
2
Rep
215
Posts

Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

iTrader: (0)

Quote:
Originally Posted by Forcefed3 View Post
Yes, there is plenty of fail in the thread. I was specifically talking about unfor.
What did I do?
Appreciate 0
      06-09-2011, 09:46 PM   #174
Elie335
ايلي ٣٣٥ هاهاها
Elie335's Avatar
St Pierre and Miquelon
27
Rep
1,448
Posts

Drives: Vorsteiner e92
Join Date: Jun 2009
Location: Leb

iTrader: (1)

unfor, can you please reply how you got AGAIN confirmed that the pistons were forged ?
__________________
Appreciate 0
      06-09-2011, 09:57 PM   #175
unfor
Second Lieutenant
2
Rep
215
Posts

Drives: stuff
Join Date: Apr 2010
Location: lEASTCoast

iTrader: (0)

Quote:
Originally Posted by Elie335 View Post
unfor, can you please reply how you got AGAIN confirmed that the pistons were forged ?
Yes. The engine shop had a 335i come in ( a late model 2008 car) with water damage in the motor. The pistons were completely different.
Appreciate 0
      06-09-2011, 10:00 PM   #176
Elie335
ايلي ٣٣٥ هاهاها
Elie335's Avatar
St Pierre and Miquelon
27
Rep
1,448
Posts

Drives: Vorsteiner e92
Join Date: Jun 2009
Location: Leb

iTrader: (1)

Quote:
Originally Posted by unfor View Post
Yes. The engine shop had a 335i come in ( a late model 2008 car) with water damage in the motor. The pistons were completely different.
Thank you, I really appreciate your time asking the shop and sharing your information with us on the forum
__________________
Appreciate 0
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 11:08 PM.




e90post
e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2015, 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