E90Post
 


 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > How to remove the swirl flaps from an N57



Reply
 
Thread Tools Search this Thread
      08-20-2016, 01:50 PM   #1
Len_Beach
Major
191
Rep
1,245
Posts

Drives: 435d
Join Date: Jun 2011
Location: UK

iTrader: (1)

I have a 2009 330d LCI with the N57. I have a glow plug fault as the car is shortly due a service; I started to look into carbon cleaning as the car is in 78k and the manifold would be off anyway.

This then got me onto removal of the swirl flaps. I decided to buy a second hand inlet from eBay and I had it sent to James at SF3 Engineering who makes the N47 swirl flap bungs.

James took a look at the manifold and established that the swirl flap setup is completely different to the N47. The N57 flaps are located on a dowel that runs from the swirl flap actuator. Removal of the dowel allows removal of the flaps and the actuator and DDE will know no different.

The carbon build up around the swirl flaps particularly ports 1 & 2 nearest the inlet is clear to see in the first photo.

After removal of the flaps and some vigorous clearing; it's clear how unrestricted the manifold and ports now are.

I've yet to remove my manifold so I'm not sure how coked up the inlet and head will be but this manifold was from a similar mileage car and at points there was 1/2 inch of oily carbon build inside the manifold.

In photo 2 you can see the lobe that links to the actuator then in photo 3 you can see the internal side if the lobe that locates the dowel. Photo 4 is then the view of the dowel locator with the port surround refitted.
Attached Images
     
Appreciate 0
      08-21-2016, 05:51 PM   #2
elbutio
Private
United Kingdom
10
Rep
91
Posts

Drives: 335d F31 & 330d E91
Join Date: Mar 2011
Location: UK

iTrader: (0)

Nice write up. Did he make a bung or did you just put the cam back to seal? I'm looking to use a bung on the old mans n47 soon which is leaking through this flap motor to dowel entry.

Considering this on my n57 for piece of mind but would be very interested in your feedback after fitting to make sure no errors or I'll behaviours??

Cheers
Appreciate 0
      08-21-2016, 05:55 PM   #3
elbutio
Private
United Kingdom
10
Rep
91
Posts

Drives: 335d F31 & 330d E91
Join Date: Mar 2011
Location: UK

iTrader: (0)

Just read your other post, no bung needed then?
Appreciate 0
      08-21-2016, 06:01 PM   #4
Len_Beach
Major
191
Rep
1,245
Posts

Drives: 435d
Join Date: Jun 2011
Location: UK

iTrader: (1)

No bung needed Buddy. The cam lobe will remain attached to the actuator so the car won't know the flaps aren't in situ.

All being well; I'm having this fitted next week so should get the car back on Saturday the 3rd so I'll keep you posted.

If this works; I'll be selling my existing manifold if you fancy doing what I've done and cleaning up, de-flapping etc ready for a straight swap.
Appreciate 0
      08-22-2016, 01:48 AM   #5
elbutio
Private
United Kingdom
10
Rep
91
Posts

Drives: 335d F31 & 330d E91
Join Date: Mar 2011
Location: UK

iTrader: (0)

Nice one. I would have been very interested but I got a new manifold about 1 month ago due to a dodgy flap control cam on the old one. I'm getting plausibility errors still so I guess my cleaning wasn't as amazing as I thought! I will probably remove the flaps soon
Appreciate 0
      08-22-2016, 01:51 AM   #6
Len_Beach
Major
191
Rep
1,245
Posts

Drives: 435d
Join Date: Jun 2011
Location: UK

iTrader: (1)

Quote:
Originally Posted by elbutio
Nice one. I would have been very interested but I got a new manifold about 1 month ago due to a dodgy flap control cam on the old one. I'm getting plausibility errors still so I guess my cleaning wasn't as amazing as I thought! I will probably remove the flaps soon
What errors are you getting?

This manifold came with an actuator which I plugged in yesterday to test but it threw 4 errors so that could be your culprit.
Appreciate 0
      08-22-2016, 02:32 AM   #7
elbutio
Private
United Kingdom
10
Rep
91
Posts

Drives: 335d F31 & 330d E91
Join Date: Mar 2011
Location: UK

iTrader: (0)

I get swirl valve controller position sensor signal. And swirl valve plausibility when hooked upto rheingold.
Cheers
Appreciate 0
      08-22-2016, 02:35 AM   #8
Len_Beach
Major
191
Rep
1,245
Posts

Drives: 435d
Join Date: Jun 2011
Location: UK

iTrader: (1)

Quote:
Originally Posted by elbutio
I get swirl valve controller position sensor signal. And swirl valve plausibility when hooked upto rheingold.
Cheers
I'll check what mine throws up; it sounds similar.
Appreciate 0
Reply

Bookmarks


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 06:41 AM.




e90post
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