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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 > 1st Track Day = N54 Engine Failure :(



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      06-03-2013, 11:47 PM   #155
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Originally Posted by N54_Fan View Post
But you are talking about upgrading to an M3 and selling your 335i. If you want a DD that DOUBLES as a track car that is a good option. However, as I have said before I think its a bad idea. Things WILL break. What are you going to go to work with when that happens? Will your wife get pissed off driving you to work all week while car gets fixed?...mine did.

Man that's too funny!

Always agree with your wife....you know why.


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      06-04-2013, 01:47 PM   #156
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Originally Posted by SneakyDeeky View Post
That thing looks like a monster that would kill me (and my wallet).

I watched this on YouTube today (link to Chris Harris Review of Morgan Three Wheeler and Caterham Seven) and it's caused me to spend the afternoon reading up on Caterham's. I was just looking at this on another tab...
http://www.lotustalk.com/forums/f94/...ight-r-122500/

Went for a ride with someone in a caterham r500. Epic. Small power slides down a well worn country road not much wider than the car with mm precision. Acceleration was neck straining even with quite a large angle on the corner. He was a suspension engineer or something I think so I trusted he knew what he was doing.
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      06-08-2013, 10:20 AM   #157
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Hi Sneeky - Hoping to test the Meth sys this weekend, but the issue may be a bad piston connecting rod or rod bearing. Poss tensile load failure due to high rpm + defect + torque under accel. Was there a failure analysis?

Looking now for N54 piston rod design specs - anyone got??

.

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      06-08-2013, 10:25 AM   #158
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Food for thought....pages 5 & 6 especially good reading.

M3 uses forged from billet rods, yes? 4340 steel?


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.

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      06-08-2013, 02:02 PM   #159
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Here's some bedtime reading....check the bottom line on tensile strength sintered vs billet forged conrods page 252+ [page 231+ in text].

I know, 9 years back.

Anyone have a line on what material BMW uses, sintered & billet forged conrods?


.

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      06-13-2013, 07:28 AM   #160
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Eerily familiar, this poor guy was just movin' along in traffic.

Sneeky, the more I hear, the more it sounds like there are issues with sintered rods [random defects]. Gotta wonder where BMW is on this - they must know.
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