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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).



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      08-14-2013, 04:05 PM   #243
joec500
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Quote:
Originally Posted by GeorgiaTech335coupe View Post
They have been confirmed to by cast pistons. They are hypereutectic which is a higher quality cast.

I have confirmed this in my engine (October 2007 build), it has been confirmed in another engine by a shop in Houston on an 08 build.

Everyone has cast pistons.
2nd... I believe Shiv and FFTEC have taken apart a 06 build N54 to confirm this. I saw a thread on this awhile ago.
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      08-20-2014, 12:39 AM   #244
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So what is forged?
2010 335xi .... N54B30
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      08-20-2014, 01:44 AM   #245
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All N54 pistons are hypereutectic.
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      08-20-2014, 03:24 AM   #246
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What signification of hypereutectic??? Not forged??
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      08-20-2014, 09:26 AM   #247
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Quote:
Originally Posted by OneTimeI View Post
So what is forged?
2010 335xi .... N54B30
Every single N54 ever made - for any BMW ever made, has a forged crank, forged rods, and cast pistons. It does not matter what car you drive, if it came from BMW with an N54 that's the deal.
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Originally Posted by kiteboy View Post
What signification of hypereutectic??? Not forged??
http://en.wikipedia.org/wiki/Hypereutectic_piston

It's a casting technique. Produces results that exceed traditional casting in terms of consistency of the piece, and material strength.
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      08-20-2014, 11:58 AM   #248
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Look it up on wikipedia great explanation, hypereutectic pistons also have less expansion so engineers can specify tighter cold tolerances.
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      08-20-2014, 11:59 AM   #249
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Quote:
Originally Posted by 135Pats View Post
Every single N54 ever made - for any BMW ever made, has a forged crank, forged rods, and cast pistons. It does not matter what car you drive, if it came from BMW with an N54 that's the deal.


http://en.wikipedia.org/wiki/Hypereutectic_piston

It's a casting technique. Produces results that exceed traditional casting in terms of consistency of the piece, and material strength.

lol we posted at the same time.
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