[Bluenose-2er]

Originally Posted by allthatisntnow

Agree with it being a more robust design, but i believe it was a cost decision rather than an improvement in durability that drove their choice to do this.

The main reason the B engines have a closed deck is because of the modular requirement to share components (including the block) with the diesel engines for cost effectiveness. Diesels see cylinder pressures no petrol engine does hence the requirement for closed deck. Open deck N54s and N55s have put out in excess of 700hp without the block falling to pieces. So its really an on paper benefit as far as series cars go.

The motorsport engines are closed deck anyway and would be even if the series production variant weren't (as seen with the S55). The BXX still have hypereutectic pistons which would give out long before the block would, albeit an 'S' version would remedy this. I don't think we'll be seeing the B58 being any more or less reliable than the N55 unless people push for 1000+ hp builds. Don't think anything in the BMW factory power outputs that would strain either unit above what it can handle.

Very good points. I agree... Modular design has benefit to BMW but not to the users.

Closed deck... open deck... let's leave that discussion to the myriad other threads

Still don't see "fundamentally superior"... except for tuners that are only interested in gross horsepower in exchange for a shortened life.

[ClothSeats]

The benefits of the B58 are the stock turbo and air to liquid intercooler.

[Dylan86]

Originally Posted by Bluenose-2er

Very good points. I agree... Modular design has benefit to BMW but not to the users.

Closed deck... open deck... let's leave that discussion to the myriad other threads

Still don't see "fundamentally superior"... except for tuners that are only interested in gross horsepower in exchange for a shortened life.

Besides, the N55 in the M2/35i variants are in fact closed deck. So the comparison/reasoning between B58 & N55 from a longevity or performance perspective from these particular models is redundant. Tada pshh

Have you seen the oil filter location on the B58? Good loooarrrd!! DIY nightmare lol

[Dylan86]

Originally Posted by ClothSeats

The benefits of the B58 are the stock turbo and air to liquid intercooler.

Yes sir, precisely

Curious long term how the WAI units hold up. Does it run it's own separate coolant system?

[oldmanstyle]

Originally Posted by the_phew

search was inconclusive and this thread (http://f87.bimmerpost.com/forums/sho...&highlight=B58) was nothing but speculation and misinterpretations.

unhappy with search results that have thoroughly covered this topic because of speculation and misinterpretations

Originally Posted by the_phew

Will the M2 get the B58 in the upcoming MY 2018 LCI? BMW has replaced the N55 in most other applications, so it seems likely to me.

starts new thread and leads off with the same tiring and borish speculation from the other threads

[Stu Pedasho]

Hmmmm.........

[chris719]

Originally Posted by Dylan86

Besides, the N55 in the M2/35i variants are in fact closed deck. So the comparison/reasoning between B58 & N55 from a longevity or performance perspective from these particular models is redundant. Tada pshh

Have you seen the oil filter location on the B58? Good loooarrrd!! DIY nightmare lol

The N55 is not closed deck. Definitely not in the 235i and 95% surely not in the M2. The M2 marketing material is the only one that said the T0 variant was closed deck, and it only appeared in some of the materials. It is highly unlikely BMW spent the time and money to create a closed deck variant. See the other threads on this.

[zenmaster]

Originally Posted by chris719

The M2 marketing material is the only one that said the T0 variant was closed deck, and it only appeared in some of the materials. It is highly unlikely BMW spent the time and money to create a closed deck variant. See the other threads on this.

I'm 95% sure the T0 is closed deck. It's in the official BMW engineering technical training manual!
BMW NA in NJ has also verified. Try doing a little research.

[chris719]

Originally Posted by zenmaster

I'm 95% sure the T0 is closed deck. It's in the official BMW engineering technical training manual!
BMW NA in NJ has also verified. Try doing a little research.

You try doing some critical thinking. That's a manual full of errors and the BMW NA people you talk to don't know a damn thing really.

[RPM2-85]

Originally Posted by chris719

The N55 is not closed deck. Definitely not in the 235i and 95% surely not in the M2. The M2 marketing material is the only one that said the T0 variant was closed deck, and it only appeared in some of the materials. It is highly unlikely BMW spent the time and money to create a closed deck variant. See the other threads on this.

Your a freaking idiot. plain and simple..... its closed deck.

[RPM2-85]

Originally Posted by chris719

You try doing some critical thinking. That's a manual full of errors and the BMW NA people you talk to don't know a damn thing really.

Its closed deck, get over it. No way they would allow a car make 400lb ft of torque to the wheels stock without having a closed deck. Do some critical thinking buddy....

And your also an idiot if you dont think they make 400 to the wheels stock.....

[No Boost]

Shits getting serious real quick, I smell happy hour cocktails.

[kiysersosae]

Originally Posted by Dylan86

Yes sir, precisely

Curious long term how the WAI units hold up. Does it run it's own separate coolant system?

Wai will be fine. I had one on my Abbott racing Saab 900 turbo and it was much better than stock intercooler

[M3 Adjuster]

Originally Posted by Rupes

I can now definitively state the LCI M2 will receive the LS1 V8 engine from Chevy. Very few people know of this, but my local Pep Boys cashier (Billy Smith) told me. Billy was also only one of three people that knew Donald Trump would win the presidency, so it must be true.

[zenmaster]

Originally Posted by chris719

You try doing some critical thinking. That's a manual full of errors and the BMW NA people you talk to don't know a damn thing really.

Have you read this manual? Probably not! So NO, you don't know if it's full of errors. Geez talk about lack of critical thinking!

[slashrawr]

Come on folks...

[Artemis]

Originally Posted by RPM2-85

Your a freaking idiot. plain and simple..... its closed deck.

Originally Posted by RPM2-85

Its closed deck, get over it. No way they would allow a car make 400lb ft of torque to the wheels stock without having a closed deck. Do some critical thinking buddy....
And your also an idiot if you dont think they make 400 to the wheels stock.....

This erratic name calling has to stop, definitely.

You're less than two months on board and repeatedly violate basic house rules of respect.

I can only repeat what I told you earlier:

Originally Posted by Artemis

Look friendo, over here it's common practice that forum fellows treat each other with respect. Agreeing to disagree in a civilized fashion. You stumbled in here a few days ago, firing a couple of hot rounds. Don't try that in your local bar. Work on your communication skills if you want your message to get across. Instead of the N55 engine, it's rather your mouth that needs a 'closed deck' to be more 'crack proof'.

Hopefully the message gets across this time: behave or leave.

[Dylan86]

Originally Posted by chris719

The N55 is not closed deck. Definitely not in the 235i and 95% surely not in the M2.

It is in fact closed on the '14+ M235i/M2 N55's, that has been confirmed time over time. It is open deck on all other variants. Many misleading YouTube videos out there, and many more misleading threads in the forums especially with the latest release of the technical info on the B58. They generalize a lot of the N55 specs, not considering there are other variants, most importantly on our 2 series cars. Either way I could care less, I don't buy this type of car to make 600+hp, I buy it to drive it and enjoy it for what it was built for.

D

[RAM_F30_F87]

I've heard from a reliable source the engineers and accountants were going to compromise and split the difference between B58 and N55 and design the H56.5 with a semi-open/semi-closed design for the MY 2018 LCI.
While the rest of you debate engine design and wait for 'the next best thing', we M2 owners will be blasting around enjoying our cars.
Anyone else tired of the whining?

[slashrawr]

Originally Posted by Artemis

...behave or leave.

Hear, hear!

[RPM2-85]

When the peanut gallery dissing the car and talking out their ass for no reason leave, I will leave....

Deal?

[///M-pressed]

If I hear this open deck/closed deck argument anymore I think it's time to start banning people.