N54 with 2 N55 turbos

alectoparty · 04-16-2016, 10:09 PM

Is it possible to mount 2 OEM N55 turbos onto an N54 platform? I know one could just buy larger turbos... But that's not the point, I just want to know if having twin twin-scroll turbos is possible. Or would it be too complicated? More of a theoretical question, less about cost and top end power.

The Wind Breezes · 04-16-2016, 10:36 PM

Possible, sure, but completely unrealistic. You'd have to chop the turbofolds off and do full-on custom fabrication. It would cost many thousands on top of the hardware.

John_01 · 04-17-2016, 12:27 AM

Six exhaust ports and four turbine inlets. Six doesn't go into four.
You should just get a larger twin scroll turbo.

Rob_BMW_PNW · 04-17-2016, 12:41 AM

Would be cheaper to get the PS2

alectoparty · 04-17-2016, 12:14 PM

Yea there would be a bank of three cylinders that feed into the dual inlet. So not ideal but still could work...

I'm wondering if the turbo wouldn't be to large for the airflow of just 3 cylinders... On the other hand maybe twin twin-scrolls could make a lot of boost throughout the power band

tuj · 04-19-2016, 04:20 PM

the only answer is 3 turbos.

ShocknAwe · 04-19-2016, 05:41 PM

Quote:

Originally Posted by tuj

the only answer is 3 turbos.

Nah bro, twin-turbocharged AND supercharged.

Actually, that would be super cool.

NORAGRETS · 04-19-2016, 06:33 PM

Quote:

Originally Posted by tuj

the only answer is 3 turbos.

4 turbos clearly, gotta keep things even to balance out that 50/50 weight distribution!

NihonX · 04-19-2016, 07:55 PM

If there is enough room, it might be possible to have two secondary turbos that feed into a large primary turbo.

Look into compound turbocharging.

Cavpilot2k · 04-20-2016, 08:02 AM

A twin-scroll turbo per cylinder!

Dylanize · 04-20-2016, 12:23 PM

Those turbos are pretty limited, even if you did make it work the gains most likely wont even compare to any of the turbo upgrades out there.

04-16-2016, 10:09 PM	#1
alectoparty New Member 0 Rep 17 Posts Drives: 135i coupe Join Date: Sep 2015 Location: Fort Wayne, IN iTrader: (0)	N54 with 2 N55 turbos Is it possible to mount 2 OEM N55 turbos onto an N54 platform? I know one could just buy larger turbos... But that's not the point, I just want to know if having twin twin-scroll turbos is possible. Or would it be too complicated? More of a theoretical question, less about cost and top end power.
	Appreciate 0 Tweet Quote

04-16-2016, 10:36 PM	#2
The Wind Breezes Lieutenant Colonel 912 Rep 1,850 Posts Drives: 135i N55 DCT Join Date: Apr 2015 Location: USA iTrader: (0)	Possible, sure, but completely unrealistic. You'd have to chop the turbofolds off and do full-on custom fabrication. It would cost many thousands on top of the hardware.
	Appreciate 0 Quote

04-17-2016, 12:27 AM	#3
John_01 Colonel 232 Rep 2,643 Posts Drives: E90 325i, E82 135i Join Date: Mar 2009 Location: Sydney, Australia iTrader: (0)	Six exhaust ports and four turbine inlets. Six doesn't go into four. You should just get a larger twin scroll turbo.
	Appreciate 0 Quote

04-17-2016, 12:41 AM	#4
Rob_BMW_PNW Captain 127 Rep 609 Posts Drives: 135i 2011 Join Date: Jan 2016 Location: PNW iTrader: (3)	Would be cheaper to get the PS2
	Appreciate 0 Quote

04-17-2016, 12:14 PM	#5
alectoparty New Member 0 Rep 17 Posts Drives: 135i coupe Join Date: Sep 2015 Location: Fort Wayne, IN iTrader: (0)	Yea there would be a bank of three cylinders that feed into the dual inlet. So not ideal but still could work... I'm wondering if the turbo wouldn't be to large for the airflow of just 3 cylinders... On the other hand maybe twin twin-scrolls could make a lot of boost throughout the power band
	Appreciate 0 Quote

04-19-2016, 04:20 PM	#6
tuj First Lieutenant 52 Rep 379 Posts Drives: '13 135i Join Date: May 2013 Location: Stamford, CT iTrader: (0)	the only answer is 3 turbos. __________________ Living the 1-life since 2013.
	Appreciate 0 Quote

04-19-2016, 07:55 PM	#9
NihonX Captain 63 Rep 901 Posts Drives: 2011 VO 1M Join Date: Sep 2008 Location: Antioch iTrader: (8)	If there is enough room, it might be possible to have two secondary turbos that feed into a large primary turbo. Look into compound turbocharging. __________________ 2011 VO 1M
	Appreciate 0 Quote

04-20-2016, 08:02 AM	#10
Cavpilot2k Chief Warrant Officer 1025 Rep 1,638 Posts Drives: like a damn lunatic Join Date: Feb 2012 Location: Boston iTrader: (0)	A twin-scroll turbo per cylinder! __________________ "Prius" is Latin for Eunuch. "Hrothgar": 2012 135i: 6MT M-Sport, BSM/Blk; Nav, Premium, Convenience, HK Dinan Stage 2 +PPK /// BMW PE /// VRSF CP /// K&N /// Koni Sports /// RSFB Inserts /// MPS4S 225/255 /// Other Stuff
	Appreciate 0 Quote

04-20-2016, 12:23 PM	#11
Dylanize Captain Dutch Rudder 204 Rep 2,258 Posts Drives: AMG Join Date: Jan 2013 Location: Charlotte, NC iTrader: (8)	Those turbos are pretty limited, even if you did make it work the gains most likely wont even compare to any of the turbo upgrades out there. __________________ No more E92 or E82
	Appreciate 0 Quote