ZPOST
BMW Garage BMW Meets Register Search Today's Posts Mark Forums Read


Go Back   ZPOST > BMW Z4 Technical Talk > Engine, Exhaust, Drivetrain Modifications
  TireRack

SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS!
Post Reply
 
Thread Tools Search this Thread
      04-14-2013, 01:39 PM   #1
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
HPS silicone intake elbow

Has anyone tried this on the e85/e86 z4m yet?

http://www.hps-siliconehoses.com/06-...-tube-red.html

I know a few folks that tried to adapt the e46 ones with no place for the vacuum line. This one claims to be specific to the z4m. Did a search with no luck so wanted to see if anyone had tried this yet.

Last edited by R0ME0; 04-15-2013 at 11:41 AM..
Appreciate 0
      04-14-2013, 02:24 PM   #2
exdos
Second Lieutenant
England
6
Rep
222
Posts

Drives: Z3 M Coupe(S54) and Z4 M Coupe
Join Date: Apr 2008
Location: UK

iTrader: (0)

I honestly can't see how the OEM part is described as "restrictive" or how this part will make any significant performance gain. The air passing through this part has just passed through the most restrictive part in the air-intake system, namely, the MAF, and the internal area of the OEM part progressively increases the further away from the MAF as it joins the plenum.
Appreciate 0
      04-14-2013, 05:41 PM   #3
yousefnjr
salty cowboys fan
yousefnjr's Avatar
6115
Rep
3,392
Posts

Drives: ‘06 Z4MR, ‘20 X7, ‘22 M4x
Join Date: Dec 2012
Location: Bay Area, CA

iTrader: (2)

I'm pretty sure the factory plastic piece is bent 90 degrees. It's also huge and wide open, so I'm not sure where the restriction comes in. The ID on both ends would have to be identical anyway for this thing to fit, otherwise you would need a wider MAF and manifold.

I've also purchased a very similar piece, made from the same material but admittedly smaller, for around $13 if my memory is working.
Appreciate 0
      04-15-2013, 12:07 AM   #4
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
Quote:
Originally Posted by yousefnjr View Post
I'm pretty sure the factory plastic piece is bent 90 degrees. It's also huge and wide open, so I'm not sure where the restriction comes in. The ID on both ends would have to be identical anyway for this thing to fit, otherwise you would need a wider MAF and manifold.

I've also purchased a very similar piece, made from the same material but admittedly smaller, for around $13 if my memory is working.
Do you have pics?
Appreciate 0
      04-15-2013, 01:15 AM   #5
beta
Lieutenant Colonel
80
Rep
1,663
Posts

Drives: 2006 M Roadster
Join Date: Mar 2011
Location: CA

iTrader: (2)

http://www.zpost.com/forums/showthread.php?t=306405
__________________
Appreciate 0
      04-15-2013, 01:28 AM   #6
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
Quote:
Originally Posted by beta
Yes I saw this post but that one doesn't have the vacuum line port nor pictures. I'm hoping someone has tried this. Would love to get feedback!
Appreciate 0
      04-15-2013, 02:07 AM   #7
johanness
Banned
56
Rep
1,739
Posts

Drives: 2008 Z4MC
Join Date: Aug 2010
Location: Seattle, Vancouver

iTrader: (3)

Garage List
Quote:
Originally Posted by exdos
I honestly can't see how the OEM part is described as "restrictive" or how this part will make any significant performance gain. The air passing through this part has just passed through the most restrictive part in the air-intake system, namely, the MAF, and the internal area of the OEM part progressively increases the further away from the MAF as it joins the plenum.
Well it certainly won't net the same returns as the 370bhp from your custom intake alone... That's for sure
Appreciate 0
      04-15-2013, 03:10 AM   #8
exdos
Second Lieutenant
England
6
Rep
222
Posts

Drives: Z3 M Coupe(S54) and Z4 M Coupe
Join Date: Apr 2008
Location: UK

iTrader: (0)

Quote:
Originally Posted by johanness View Post
Well it certainly won't net the same returns as the 370bhp from your custom intake alone... That's for sure
Exactly!

Here are a few photos of the OEM part.



As can be seen the inside is very smooth/polished



I've run a stream of water over the corrugated section at the inlet end of the elbow to show any restriction that might occur. It appears to me that this has a tendency to spread a "boundary layer" onto the smooth section of the pipe rather than create eddy currents which might impede flow.



The inlet orifice measures 85mm in diameter (Area 56.74sq cms) and the elbow is an increasing taper to the elliptical orifice which measures 110mm x 135mm (Area 116.71sq cms) which is double the size of the inlet. No restriction there.

Last edited by exdos; 04-15-2013 at 04:01 AM..
Appreciate 0
      04-15-2013, 04:07 PM   #9
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
Just heard back from HPS and it appears its the same part as the M3. I have showed them pics and they are working with their R&D Product department to see if they can get the vacuum port added.
Appreciate 0
      04-15-2013, 07:05 PM   #10
eunosracr
Colonel
157
Rep
2,231
Posts

Drives: a car
Join Date: Oct 2007
Location: here

iTrader: (4)

You can put a breather on the end of the vacuum line and call it a day.
Appreciate 0
      06-26-2013, 01:05 PM   #11
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
Quote:
Originally Posted by eunosracr View Post
You can put a breather on the end of the vacuum line and call it a day.
Any issues so far from running it like this? I was thinking about just capping it or putting a breather fitting on it to keep it clean. Thoughts or pics of your setup?

http://a248.e.akamai.net/origin-cdn....jpg?1317640687
Appreciate 0
      07-06-2013, 08:37 AM   #12
eunosracr
Colonel
157
Rep
2,231
Posts

Drives: a car
Join Date: Oct 2007
Location: here

iTrader: (4)

Quote:
Originally Posted by R0ME0 View Post
Any issues so far from running it like this? I was thinking about just capping it or putting a breather fitting on it to keep it clean. Thoughts or pics of your setup?

http://a248.e.akamai.net/origin-cdn....jpg?1317640687
I ran it like this for a few months without issue. Then i picked up a Grouppe M and took off the silicone elbow as the Gruppe M was not fitting exactly right.
Appreciate 0
      07-08-2013, 01:48 PM   #13
R0ME0
"The Midas Touch"
R0ME0's Avatar
519
Rep
1,055
Posts

Drives: F87 LBB ///M2
Join Date: Aug 2007
Location: Seattle, WA

iTrader: (14)

Garage List
2017 M2  [10.00]
2008 Z4M - SOLD  [0.00]
Quote:
Originally Posted by eunosracr View Post
I ran it like this for a few months without issue. Then i picked up a Grouppe M and took off the silicone elbow as the Gruppe M was not fitting exactly right.
Do you have any pics of your old setup before the Gruppe M? I picked up the HPS elbow and it didn't have enough give or play to work with the AFE
Appreciate 0
      07-08-2013, 07:03 PM   #14
eunosracr
Colonel
157
Rep
2,231
Posts

Drives: a car
Join Date: Oct 2007
Location: here

iTrader: (4)

Quote:
Originally Posted by R0ME0 View Post
Do you have any pics of your old setup before the Gruppe M? I picked up the HPS elbow and it didn't have enough give or play to work with the AFE
No pics sorry. But i had the same issue with my Gruppe M.
Appreciate 0
Post 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 10:00 AM.




zpost
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
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