- summary of the topic of this thread
- two recent M2 N55 engine deck pictures confirming 'open deck'
- in general: 'open deck' versus 'closed deck'
1) For those who missed the M2 N55 engine 'open/closed deck' rap battle.
In the past an epic-
esque debate raged on this forum tackling the question whether the N55B30T0 engine powering the base M2 was 'open deck' or 'closed deck'.
I had my doubts about the accuracy of official initial BMW 'closed deck' information and explained on the forum why I believed the base M2 engine to be 'open deck'. To my eyes, there was a mismatch of information. By doing so I inevitably challenged the official initial BMW information stating 'closed deck' (threads:
here,
here,
here and
here). Some forum fellows kindly commented that I got it wrong (
"rather weak conjecture" as someone coined it).
The discussion seemed to be sealed after
'closed deck' confirmation by e-mail by BMWNA (when inquired by some forum fellow in order to end the forum discussion for once and for all). This 'closed deck' confirmation didn't convince me and I persisted: 'open deck'. Some lost their temper and in some way or another blamed me for not being capable of handling the (alleged) 'closed deck' truth.
And later the final answer came through: BMWNA
confirmed in the end that - as I had supposed -
the M2 engine is effectively 'open deck'. All 'closed deck' references have
vanished from BMW M2 press releases and the BMWNA website. And, some forum fellows of the 'flat earth society' who had been rather unkind with me without merit, went quiet.
Before - twice the mistaken 'closed deck' reference (former link, now dead:
https://www.bmwusa.com/vehicles/m-models/m2.html):
After (former link, now re-allocated:
https://www.bmwusa.com/vehicles/m-models/m2.html):
M2 Competition and M2 CS, on the other hand, feature an S55 engine = closed deck engine layout.
2) Two recent M2 N55 engine deck pictures confirming 'open deck':
Quote:
Originally Posted by Artemis
Engine pictures will silence the discussion. Someday these will pop up over here.
|
Someday is today - here you go: 'open deck' (source:
here - Nov 2019):
3) In general: 'open deck' versus 'closed deck':
explanation:
S55 engine dismantled and repaired. Also quickly showing the difference between the N55 'open deck' design and S55 'closed deck' design. Interesting tech stuff. In German, but with English subtitles:
part 1:
part 2: