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socaln54 socaln54 is offline
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Default N55 exhaust manifold on N54? - 04-01-2018, 06:46 PM

Would it be possible to fit the N55 manifold on the N54 the adjusting it to a T3 or T4 flange and slap a turbo on it?
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alexis485 alexis485 is offline
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Default 04-02-2018, 05:48 AM

I'm not sure if it would fit. Anyways, that turbofold design is the current restriction on the N55's. The backpressure goes through the roof at high boost, that's why the majority of hybrid stg 2's can't make over ~530 hp.


2011 E92 ABR N55 Built Motor | ABR Built 6AT | Big Boost 3.4 Turbo Kit | JB4 + MHD | xPH Stg3 Flash | Fuel-It Stg 3 LPFP | Fuel-it PI Kit | COBB Exhaust | E85 |
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Rob@RBTurbo Rob@RBTurbo is offline
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Default 04-02-2018, 06:10 AM

Spacing and gasket style between cylinders is the same on the N54/N55 engines, however the bolt pattern is different. Also agree with alexis that if you are going to go through all of this hassle, you'd be better off not using the OEM N55 manifold but rather the OEM N54 manifolds for better flow. On this note we have several OEM N54 manifolds cut off, if you are itching to do some fab work on your own kit let us know and we will get you a set of these manifolds for a great price to get started on it.

Rob
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See www.rbturbo.com for N54 Twin Turbo Bolt-On upgrades, or contact directly 314-630-8950 rob.rbturbo@gmail.com for a price quote.
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07335i 07335i is offline
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Default 08-15-2018, 07:56 AM

Quote:
Originally Posted by Rob@RBTurbo
Spacing and gasket style between cylinders is the same on the N54/N55 engines, however the bolt pattern is different. Also agree with alexis that if you are going to go through all of this hassle, you'd be better off not using the OEM N55 manifold but rather the OEM N54 manifolds for better flow. On this note we have several OEM N54 manifolds cut off, if you are itching to do some fab work on your own kit let us know and we will get you a set of these manifolds for a great price to get started on it.

Rob
just wondering...

The part of manifold(circle) fit on n54??
bolt patern is different?..then can use our flange nut??
Don't know much about the car...
but need to change my ST exhaust manifold.
If I want to use that part of n55 exhaust on n54 ...then what need I do to fit that on n54???
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l CP forged piston(84.5mm & 9.2:1) l CP Connecting Rod l VAC rod bearing l Head Gasket 1,52MM l APR Head bolt l Fuel it PI Kit(550cc) with JB controller l stage 3 fuel kit with return line and Hobbs switch l custom single turbo ( PT6262 Ceramic ball bearing l custom exhaust l BMS meth kit l Kw-v3 coilover l brembo 6p & 4p l BBS RGR 19" l ER charge pipe with forge diverter valve l CP-e intercooler and oil cooler l custom Tranny cooler l mhd l xhp stage 3 l
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Payam @ BMS's Avatar
Payam @ BMS Payam @ BMS is offline
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Default 08-15-2018, 10:14 AM

Quote:
Originally Posted by 07335i
just wondering...

The part of manifold(circle) fit on n54??
bolt patern is different?..then can use our flange nut??
Don't know much about the car...
but need to change my ST exhaust manifold.
If I want to use that part of n55 exhaust on n54 ...then what need I do to fit that on n54???
It will not fit.


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