RB Turbo N55 OEM Turbocharger information>>>> - Page 6 - N54tech.com | BMW N54 N55 135 335 535 Turbo Performance Forum

dirtygerman · 08-02-2012, 05:33 AM

So I was wanting to know how the n55 manifold flowed.... So what better way to find out

I would like to say this is a pretty big limiting factor for high hp the flow of this manifold is very poor! But does have some good heat retaining methods.

M135 · 08-02-2012, 05:35 AM

Holy ****!

Rob@RBTurbo · 08-02-2012, 05:56 AM

Nice work! If you dont have any plans with the turbine housing portion in the first pic let me know i'd buy it from you. From a flow perspective the manifold is likely inline with the cylinder head itself.

dirtygerman · 08-02-2012, 06:16 AM

I plan on v-banding the turbine housing, which will then go on my b5 a4. I posted these pics in hopes some how assist with motivation for the n55 guys out there pushing the limits lol... With the housing being divided the merge collector for the three exhaust runners is very small and a restricted flow, leaving me to believe that is a limiting factor. But I am no engineer, If this turbo had a manifold with a nice collector and was done with larger primary tubes it would be more efficient, But I would like to think this turbo is near it's limit so building a manifold for this turbo would be a waste of time in my opinion, but maybe someone will prove me wrong.

turugara · 08-02-2012, 08:17 AM

Wow! Hopefully we can get some dev pushed for the n55.

Rob@RBTurbo · 09-30-2012, 10:29 PM

dirtygerman,

Did you ever make use of that turbine housing? I would like to start back on this program but could use that part to help out the R&D...

lmk,
Rob

fasteddie222 · 12-14-2012, 08:01 AM

I made an account here just to show interest for RB turbos for my n55

I have been a member at e90post for like 5 years lol

Slops · 12-14-2012, 08:14 AM

Quote:

Originally Posted by fasteddie222

I made an account here just to show interest for RB turbos for my n55

I have been a member at e90post for like 5 years lol

me tooOO!O!O!O

Rob@RBTurbo · 12-14-2012, 09:23 AM

Going to get back on the N55 in January. Will see what we can do with this thing

Slops · 12-14-2012, 09:26 AM

Quote:

Originally Posted by Rob@RBTurbo

Going to get back on the N55 in January. Will see what we can do with this thing

Nice, now that Cobb is out for us should make things interesting...

F335i · 12-14-2012, 11:56 AM

Seems like RB and Vargas are gonna go at in Jan. This should be interesting.

fasteddie222 · 12-14-2012, 01:12 PM

Quote:

Originally Posted by Rob@RBTurbo

Going to get back on the N55 in January. Will see what we can do with this thing

YES!!!!

Rob@RBTurbo · 12-18-2012, 10:28 AM

Just purchased a few N55 singles to butcher up...

torqdout · 12-18-2012, 06:38 PM

Quote:

Originally Posted by Rob@RBTurbo

Just purchased a few N55 singles to butcher up...

So pumped for this... definitely subscribed for updates! Hopefully the N55s will be able to throw down similar numbers or even surpass their older brethren (N54s)

allona · 12-19-2012, 12:01 PM

Quote:

Originally Posted by Rob@RBTurbo

Just purchased a few N55 singles to butcher up...

Xcution · 12-30-2012, 03:53 PM

sucks so much reading this...and geting to the last post.

Come on ROB you got this man!!!

Rob@RBTurbo · 12-31-2012, 06:58 PM

I can tell you I do have all of the turbos now on hand, so this will be happening soon

Quote:

Originally Posted by Xcution

sucks so much reading this...and geting to the last post.

Come on ROB you got this man!!!

Xcution · 01-01-2013, 09:18 AM

Quote:

Originally Posted by Rob@RBTurbo

I can tell you I do have all of the turbos now on hand, so this will be happening soon

ALL HAIL ROB!!!

I will be one of the first to buy whatever you got for the N55. If possible just keep us, who are losing hair on your behalf while you come up with something in the loop

Shift_Drift350z · 01-01-2013, 03:09 PM

*Keeps fingers crossed*

Rob@RBTurbo · 01-01-2013, 04:45 PM

An upgrade will definitely be made available. The only thing to hope for is the amount of work that I can actually do, making the gains more and more apparent.

Quote:

Originally Posted by Shift_Drift350z

*Keeps fingers crossed*

toronto335i · 01-04-2013, 04:22 PM

Quote:

Originally Posted by Rob@RBTurbo

An upgrade will definitely be made available. The only thing to hope for is the amount of work that I can actually do, making the gains more and more apparent.

the n55 needs all the help it can get!!!! great news Rob looking forward to this

Rob@RBTurbo · 01-04-2013, 04:49 PM

I agree! Should have a prototype by month end- then a Guinnea pig willing to do a lil trailblazing for the n55 crowd.

torqdout · 01-04-2013, 05:29 PM

Quote:

Originally Posted by Rob@RBTurbo

I agree! Should have a prototype by month end- then a Guinnea pig willing to do a lil trailblazing for the n55 crowd.

Any specifics you look for in your pigs? AT/MT? Location? I know I and multiple others would definitely fight for this honor

Rob@RBTurbo · 01-04-2013, 05:37 PM

Prefer a RWD car and the biggest thing is just someone who is highly motivated to install and tune and get on the dyno and has some tuning know how or capabilities to help speed the process (or is in very close proximity to a tuner like Terry).

torqdout · 01-04-2013, 05:44 PM

Quote:

Originally Posted by Rob@RBTurbo

Prefer a RWD car and the biggest thing is just someone who is highly motivated to install and tune and get on the dyno and has some tuning know how or capabilities to help speed the process (or is in very close proximity to a tuner like Terry).

I'm a RWD and very motivated to install but unfortunately not close to Terry :/