E90Post
 


The Tire Rack
 
BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > VRSF N54 Aluminum Turbo Outlet Charge Pipe Now Available!



Reply
 
Thread Tools Search this Thread
      11-16-2018, 01:49 PM   #67
jacobniell
Second Lieutenant
jacobniell's Avatar
Denmark
11
Rep
226
Posts

Drives: BMW 335i
Join Date: Feb 2011
Location: Denmark

iTrader: (0)

Garage List
2007 335i  [0.00]
Quote:
Originally Posted by Rob@RBTurbo View Post
Quote:
Originally Posted by Tiago@VRSF View Post
Measure the ID of the OEM outlet adapter which when installed is inserted INTO the OEM interooler's inlet and outlet Rob. That's where the restriction lies. When utilizing OEM connectors, you're limited to the ID of the OEM inlet/outlet adapter which are certainly not 2.4", but less than 2" ID.
If one were to try to re-use the accordion style OE coupler with any new high flow outlet, for reasons unknown, then agree it would be less ID at around 2.1". A standard straight 2.5" ID coupler will correct this condition.

The point was that the use of the OE style circlip connections on an IC itself, is of no restriction. Here is an adapter that shows as such.

Rob
Would it be possible to get the kit with some kind of adapter that would support the VRSF hot side and connect to the IC. I preferred to keep my HPF IC as this is quite effective even with the original couplers.
If the kit does not support the IC coupler, do you Rob have a coupler that would make it all work well? I think that my RB turbos would like the more free flowing hotside ;0)
__________________
Appreciate 0
      11-16-2018, 02:38 PM   #68
Tiago@VRSF
BimmerPost Supporting Vendor
Tiago@VRSF's Avatar
United_States
1548
Rep
33,654
Posts


Drives: 335i, M4, M6 GC, X5M
Join Date: Dec 2007
Location: MA

iTrader: (99)

Garage List
Send a message via AIM to Tiago@VRSF
Quote:
Originally Posted by jacobniell View Post
Would it be possible to get the kit with some kind of adapter that would support the VRSF hot side and connect to the IC. I preferred to keep my HPF IC as this is quite effective even with the original couplers.
If the kit does not support the IC coupler, do you Rob have a coupler that would make it all work well? I think that my RB turbos would like the more free flowing hotside ;0)
You can use your OEM accordion adapter.
Appreciate 0
      11-16-2018, 03:35 PM   #69
jacobniell
Second Lieutenant
jacobniell's Avatar
Denmark
11
Rep
226
Posts

Drives: BMW 335i
Join Date: Feb 2011
Location: Denmark

iTrader: (0)

Garage List
2007 335i  [0.00]
Quote:
Originally Posted by Tiago@VRSF View Post
Quote:
Originally Posted by jacobniell View Post
Would it be possible to get the kit with some kind of adapter that would support the VRSF hot side and connect to the IC. I preferred to keep my HPF IC as this is quite effective even with the original couplers.
If the kit does not support the IC coupler, do you Rob have a coupler that would make it all work well? I think that my RB turbos would like the more free flowing hotside ;0)
You can use your OEM accordion adapter.
Okay and it would not be damaged in any way? I would still be able to go back to Original setup?

Can you please provide the link for ordering the high flow outlet?
__________________
Appreciate 0
      11-16-2018, 04:36 PM   #70
Rob@RBTurbo
Lieutenant Colonel
Rob@RBTurbo's Avatar
United_States
328
Rep
1,557
Posts

Drives: '08 335I AT, '14 M6 DCT
Join Date: Jan 2008
Location: St. Louis, MO

iTrader: (5)

Quote:
Originally Posted by Tiago@VRSF View Post
That specific adapter you linked is an aftermarket solution and if you were to use that adapter you're still restricting the intake tract going from 2.5" to 2.3". The OEM connector which 99% of customers are limited to using neck down to around 2".

Every upgraded outlet option available goes ranges from 1.75" to 2" at the turbo outlet and merges into a 2.5" collector at the intercooler. With the OEM connection, you'd then neck down to 2".

That's a bottle neck. Word it however you'd like but it's a restriction in the intake tract.
Your aluminum outlet here is a 2.5" OD (Outer Diameter) pipe with about a 0.060" wall thickness, no? So when you consider both walls (on the diameter) your part has an ID (Inner Diameter) of about 2.38", which is right inline with the adapter shown in the attached picture.

This is unlike the silicone options (vs. aluminum options) as they are measured in ID. So a 2.5" silicone size is TRULY a 2.5" ID, whereas a 2.5" aluminum size is TRULY a 2.38" ID. Unless you've sourced some special 2.5" ID aluminum tubing, then my apologies as this would not be the norm and probably is really in a Metric standard (if the case).

So as for the guys running these aluminum high flow outlets looking for max flow with IC's with OE connections, they are still good to go with an adapter as I've pictured. All they need is a 2.5" straight silicone coupler, and voila beautiful solution without having to condemn the otherwise high quality IC.

Thanks,
Rob
Appreciate 1
      11-16-2018, 05:18 PM   #71
jacobniell
Second Lieutenant
jacobniell's Avatar
Denmark
11
Rep
226
Posts

Drives: BMW 335i
Join Date: Feb 2011
Location: Denmark

iTrader: (0)

Garage List
2007 335i  [0.00]
Quote:
Originally Posted by Rob@RBTurbo View Post
Quote:
Originally Posted by Tiago@VRSF View Post
That specific adapter you linked is an aftermarket solution and if you were to use that adapter you're still restricting the intake tract going from 2.5" to 2.3". The OEM connector which 99% of customers are limited to using neck down to around 2".

Every upgraded outlet option available goes ranges from 1.75" to 2" at the turbo outlet and merges into a 2.5" collector at the intercooler. With the OEM connection, you'd then neck down to 2".

That's a bottle neck. Word it however you'd like but it's a restriction in the intake tract.
Your aluminum outlet here is a 2.5" OD (Outer Diameter) pipe with about a 0.060" wall thickness, no? So when you consider both walls (on the diameter) your part has an ID (Inner Diameter) of about 2.38", which is right inline with the adapter shown in the attached picture.

This is unlike the silicone options (vs. aluminum options) as they are measured in ID. So a 2.5" silicone size is TRULY a 2.5" ID, whereas a 2.5" aluminum size is TRULY a 2.38" ID. Unless you've sourced some special 2.5" ID aluminum tubing, then my apologies as this would not be the norm and probably is really in a Metric standard (if the case).

So as for the guys running these aluminum high flow outlets looking for max flow with IC's with OE connections, they are still good to go with an adapter as I've pictured. All they need is a 2.5" straight silicone coupler, and voila beautiful solution without having to condemn the otherwise high quality IC.

Thanks,
Rob
Quote:
Originally Posted by Rob@RBTurbo View Post
Quote:
Originally Posted by Tiago@VRSF View Post
That specific adapter you linked is an aftermarket solution and if you were to use that adapter you're still restricting the intake tract going from 2.5" to 2.3". The OEM connector which 99% of customers are limited to using neck down to around 2".

Every upgraded outlet option available goes ranges from 1.75" to 2" at the turbo outlet and merges into a 2.5" collector at the intercooler. With the OEM connection, you'd then neck down to 2".

That's a bottle neck. Word it however you'd like but it's a restriction in the intake tract.
Your aluminum outlet here is a 2.5" OD (Outer Diameter) pipe with about a 0.060" wall thickness, no? So when you consider both walls (on the diameter) your part has an ID (Inner Diameter) of about 2.38", which is right inline with the adapter shown in the attached picture.

This is unlike the silicone options (vs. aluminum options) as they are measured in ID. So a 2.5" silicone size is TRULY a 2.5" ID, whereas a 2.5" aluminum size is TRULY a 2.38" ID. Unless you've sourced some special 2.5" ID aluminum tubing, then my apologies as this would not be the norm and probably is really in a Metric standard (if the case).

So as for the guys running these aluminum high flow outlets looking for max flow with IC's with OE connections, they are still good to go with an adapter as I've pictured. All they need is a 2.5" straight silicone coupler, and voila beautiful solution without having to condemn the otherwise high quality IC.

Thanks,
Rob
Thanks Rob
Can you advice where the 2,5" straight silicone coupler can be bought? And will it work/ fit the N54?
__________________
Appreciate 0
      11-16-2018, 06:19 PM   #72
Tiago@VRSF
BimmerPost Supporting Vendor
Tiago@VRSF's Avatar
United_States
1548
Rep
33,654
Posts


Drives: 335i, M4, M6 GC, X5M
Join Date: Dec 2007
Location: MA

iTrader: (99)

Garage List
Send a message via AIM to Tiago@VRSF
Quote:
Originally Posted by jacobniell View Post
Thanks Rob
Can you advice where the 2,5" straight silicone coupler can be bought? And will it work/ fit the N54?
A 2.5" silicone coupler will not work without the adapter Rob mentioned. You'd have to buy that adapter along with the coupler.
Appreciate 1
      11-17-2018, 05:47 AM   #73
jacobniell
Second Lieutenant
jacobniell's Avatar
Denmark
11
Rep
226
Posts

Drives: BMW 335i
Join Date: Feb 2011
Location: Denmark

iTrader: (0)

Garage List
2007 335i  [0.00]
Quote:
Originally Posted by Tiago@VRSF View Post
Quote:
Originally Posted by jacobniell View Post
Thanks Rob
Can you advice where the 2,5" straight silicone coupler can be bought? And will it work/ fit the N54?
A 2.5" silicone coupler will not work without the adapter Rob mentioned. You'd have to buy that adapter along with the coupler.
Yes but where can I find the parts needed?
__________________
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -5. The time now is 08:45 AM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST