02-25-2016, 03:52 PM | #1 |
Major General
13484
Rep 8,148
Posts |
BMW M2 N55 Uses Different Turbo Part Than M235i and X4 M40i
Featured on BIMMERPOST.com M2: 11 65 8 053 153 M235i (there are two part numbers): 11 65 7 648 913; 11 65 7 643 115 X4 M40i: 11 65 8 663 045 The pics are identical for all cars.
__________________
|
02-25-2016, 05:16 PM | #4 |
First Lieutenant
370
Rep 354
Posts |
It just might be that whole unit had to be redesigned for X model.
But it was expected that turbo was completely different compared to M235i. They just created such a public confusion by giving N55 name to an M car. |
Appreciate
2
|
02-25-2016, 05:21 PM | #5 |
IG @bmwF9xG80
3810
Rep 7,594
Posts
Drives: G80 M3, X4M, G07 X7m50
Join Date: Apr 2012
Location: NYC to NJ to Orlando FL
|
Yes because the M2 has overboost feature of 370lb torque, so in essence the X4 M40i engine is a detuned M2 (355hp/343).
__________________
60-130mph 6.5s X4M #HCP
60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce IG: @bmwF9XG80 |
Appreciate
2
Arcanine13.00 |
02-25-2016, 05:39 PM | #9 |
Colonel
840
Rep 2,400
Posts |
When?
The N54 in the 1M was literally an N54, same as the prior year 1/3 335.. No hardware changes. BMW's marketing department must have serious hand getting this engine named an N55. Different block? Different pistons? Different turbo? Never, in BMW's history, have such changes not resulted in a primary designation change. Not that I think a name matters at all, but you can see how the mouthbreathers react to the N55 label. Best performance buy from a straight line/tuning perspective? An '08-'10 135 or '07-'10 335. Honestly, when it's all said and done, I bet there are many people who wish the M2 just got a carry-over engine from the 1M.
__________________
'02 S54 M3 (500/500 GC/Koni)
'08 N54 135 (JB4, DCI, BMW PS/Bilstein B6s, H&R M3 FSB, Strongflex FCABs) '14 N55 X1 (JB4, BMS DP, BMS Intake, Alpina TCU reflash, H&R Sports, Bilstein B6s, E93 M3 RSB, Strongflex FCABs, baby seat) '08 N54 535xi touring (Bilstein B6s, Downpipes, MHD tune, baby seat) |
Appreciate
6
|
02-25-2016, 10:59 PM | #10 |
Brigadier General
1575
Rep 3,888
Posts |
|
Appreciate
1
|
02-29-2016, 07:19 AM | #14 |
Private First Class
17
Rep 166
Posts |
M2 has a different turbo, based on the HP and power band.
The M2 makes peak HP @ 6500 rpms ; vs. X4 40M @ 5800 RPMs. Same for the M235i; peak HP in the 6000 rpms. I don't see how the M2 could have this kind of power & power band without a bigger turbo. Granted camshafts have something to do with the power band, but in order to make HP you need to make boost on the upper RPM range. |
Appreciate
0
|
04-11-2016, 09:40 PM | #15 |
Captain
116
Rep 886
Posts |
M2 Turbo Part# found?
So I did some digging and it looks like the turbo part number on the X4 M40iX is different than the turbo part number on the M235iX... Comparing XI models because that's all i could find for the X4 M40i(which apparently has the same motor as the M2)
I wouldn't call this official but maybe the M2 has a different turbo than a standard N55 motor? Tuners start to get excited?
__________________
F30 LCI 328i MSport | Mineral Grey
|
Appreciate
1
|
04-11-2016, 10:27 PM | #16 |
Lieutenant Colonel
1236
Rep 1,963
Posts |
There is a thread around here somewhere showing a different part number from both the M235i and X4 turbos.
__________________
Current
AW BMW M2 Past VO BMW 1M |
Appreciate
2
|
04-12-2016, 02:51 AM | #17 |
Brigadier General
1738
Rep 4,496
Posts |
From here https://www.parts.bmwgroup.com/webetk/FzgIdCtrl
M2 turbo/exhaust manifold part number is 11658053153. M2 cylinder head part number is common to other N55 engines hinting at above being compatible with non M2 N55 engines
__________________
Fettled M135i EB AT - gone but not forgotten:
AW M2 DCT |
Appreciate
0
|
04-12-2016, 06:25 AM | #18 |
Private First Class
168
Rep 160
Posts |
In the F87 Technical Training manual that was uploaded here a couple of months ago there is no mention of a new turbo. Yet the manual goes in to minute detail on everything else that has changed from the M235i (and N55 used in the M235i). For example, what has changed in the piston rings, adjustments to the oil supply and addition of a second oil suction pump.
The only mention of turbo changes in the manual concern the overboost function and that a blow off valve without diaphragm from the N20 is used. Given the information in the manual I'd be very surprised if they omitted to mention a completely new turbo! |
Appreciate
0
|
04-12-2016, 06:35 AM | #19 | |
Captain
602
Rep 886
Posts |
Quote:
|
|
Appreciate
1
|
04-12-2016, 09:00 AM | #20 |
Brigadier General
1575
Rep 3,888
Posts |
|
Appreciate
0
|
04-12-2016, 11:30 AM | #21 |
Lieutenant Colonel
606
Rep 1,782
Posts |
So can we not expect to be able to swap n55 turbo with M2 turbo?
__________________
13' 335i M Sport. EBII/Coral Red 6MT. RPI GT exhaust, Resonator delete, PS1, GFB DV , BM3 Stage 2, ER CP, VRSF DP, VRSF 5.5in Stepped FMIC, Dinan Shockware. Carbon M Performance rear diffuser. M4 trunk lip. Conti DWS06 225/40/19 and 255/35/19
|
Appreciate
0
|
04-12-2016, 11:36 AM | #22 |
Colonel
2241
Rep 2,370
Posts |
Remember that M4 owner going on about how it uses the same turbo as the M235i and that it's potential is way less, and that's the **main** reason that the M4 is worth it? It got like 30 likes. I said it wasn't confirmed but no one listened.
karma
__________________
Soon. Last edited by Adem1534; 04-12-2016 at 11:43 AM.. |
Appreciate
4
Arcanine13.00 |
Post Reply |
Bookmarks |
Tags |
open_or_closed, turbogate |
Thread Tools | Search this Thread |
|
|