11 135i Motor question

F16-r1

New Member
Sep 19, 2017
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2011 135i m sport manual coupe
So, I am buying a 135i M Sport Manual Coupe and the dealer has given me an option to drop in a forged motor or a low milage used stock motor. My question is where to get a forged long block and is it worth is or should I just stick with the stock motor, also note this is going to be my daily and I would like to push around 450whp and am going for reliability. I am new to the N55 world, and need all of the advice I can get. So please share your thoughts on this.
 

F16-r1

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Sep 19, 2017
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2011 135i m sport manual coupe
Yes, blown motor so the dealer is going to potentially put one or the other based on my preference.
 

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Corporal
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Oct 25, 2016
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Well, being that I've worked in the dealer network for 13 years, it'd be hard to believe they'd install anything except a new reman, or a used engine. I severely doubt they would pull an engine apart and do anything aftermarket (pistons/rods/etc)
 

F16-r1

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Sep 19, 2017
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2011 135i m sport manual coupe
I said a dealer, not a BMW dealer, but the guys is using a BMW cert mechanic and is giving me a warranty all written nothing verbal.
 

F16-r1

New Member
Sep 19, 2017
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2011 135i m sport manual coupe
Yes, the motor is seized it spun a bearing. So, it is getting a new forged motor meaning forged pistons or and low milage used N55 which should I go for if I am only using it as a daily to push around 450whp with reliability.
 

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Corporal
Platinum Vendor
Oct 25, 2016
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Houston, Texas
www.abrhouston.com
Can I buy the core?
You want it fast? get the used engine installed.
You wanna see how good the tech is? see if he can build it, and it'll take time.
We're doing a few N55's right now, along with our N54's and S55's/S65's etc.etc. that are in rotation right now at the shop.
 

YouAreMyWorld

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Sep 3, 2017
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E92 Mineral White 335i
That'd be more helpful to point that out.
BMW forum
Dealer typically means "BMW DEALER" not just random used car lot.
You know its already got a forged crank/rods, right? What would they be doing?

N55 already has a Forged Crank/Rods? Can you provide some proof/details?
 
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