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-   -   Intake charge air line question (http://www.bimmerfest.com/forums/showthread.php?t=627291)

TDIwyse 06-15-2012 07:15 AM

Intake charge air line question
 
Hypothetically, if someone wanted to remove the intake charge air line (#12 in diagram below) and reinstall, would they also need new seals (#13/14)?

http://www.realoem.com/bmw/showparts...88&hg=11&fg=40

And does anyone have experience with this removal/install procedure they can elaborate on?

d geek 06-15-2012 08:55 AM

It would probably be best to replace the seals, but you could try to re-use and replace if you had any leak.

BB_cuda 06-15-2012 01:53 PM

I would inspect them and see if they still are "fresh" enough i.e. not hardened and smashed down. It is not real complicated to measure the radial gap of the two parts being sealed. Measure larger diameter and smaller diameter being sealed at the o ring grove (if there is one). (OD-ID)/2 =radial gap to be sealed. Next measure with a caliper the o-ring thickness. Now is the complicated part. If this is a forced pressure line, the pressure on the o ring has to be higher than the pressur eit is sealing. The pressure on the oring is computed from how much deflection it undergoes to fit between the two diameters. If it's really a PITA to remove the line, spring for the $15 in seals and be done with it. Personally, i'd atleast inspect the old seals.

How old are the current seals?

TDIwyse 06-16-2012 04:07 AM

Current seals are ~ 2 yrs old.

Found this thread that has some good info on the process.

http://www.bavarian-board.co.uk/foru...ne-replacement

BB_cuda 06-16-2012 05:10 PM

After reading the DIY posting, i woudn't hesitate to change the seals. Do you have this oil leak issue too? I would think even if oil were not leaking that oil in that pipe going to the intercooler is BAD. Wouln't that foul up the ability to cool off the charge air as well as slow down air flow. I wonder if the oil is coming from the turbo in the first place?

best of luck.

TDIwyse 06-16-2012 06:28 PM

No oil leak. Just curious in regards to future modifications . . .

Concentric190 06-19-2012 06:45 AM

Quote:

Originally Posted by TDIwyse (Post 6896727)

And does anyone have experience with this removal/install procedure they can elaborate on?

I'll be trying this shortly.

TDIwyse 06-19-2012 07:34 PM

Nice. Hope you have time to share lessons learned.

dekesh 12-03-2012 10:06 AM

Sorry for bringing up an old thread but is this fix applicable to the X5 3.0SD MSport 2008/2009 model, as I too have a very similar situation with the red rubber hose covered in oil. Also I have noticed that it is a bit oily around the oil filler neck area. What could be causing this?

Changing the seals should be straight forward so not worried about doing that but why is the oil going through that pipe anyway. I may be wrong but should this pipe only have air going through it? Please can somebody clarify this for me.

62Lincoln 12-03-2012 12:36 PM

Quote:

Originally Posted by dekesh (Post 7228336)
Sorry for bringing up an old thread but is this fix applicable to the X5 3.0SD MSport 2008/2009 model, as I too have a very similar situation with the red rubber hose covered in oil. Also I have noticed that it is a bit oily around the oil filler neck area. What could be causing this?

Look through these threads:

http://www.e90post.com/forums/showth...red+boost+pipe

http://www.e90post.com/forums/showthread.php?t=595716

cbjr 07-15-2014 01:23 PM

Has anybody in the US had this replaced under warranty? I have a CPO car with Gold extended warranty and they're trying to tell me that is is a wear item and $900 to fix.

cbjr 07-15-2014 01:24 PM

Item #1 below:
http://www.realoem.com/bmw/showparts...=11&fg=40&hl=1

cbjr 07-15-2014 01:24 PM

It seems as if everyone in the UK had this covered by the warranty.


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