530d - Broken Swirl flap = Broken Engine
#51
Senior Members
Join Date: Mar 2007
Location: Manchester, UK
Posts: 423
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: E60 525d M-Sport Saloon M57N2 3.0d LCI
EXTERIOR: Jet Black, ///M-Aerodynamic Bodystyling, ///M-Rear Spoiler, De-badged, Gradual Tint Windscreen, ///M-Double Spoke 172M 19" Alloy Wheels (with non-run flats & space saver spare wheel) & ///M-Sports Suspension;
INTERIOR: ///M-Steering Wheel, Black Dakota Leather Heated Sports Seats with Electric Lumbar Supports, Brushed Aluminium Interior Trim & Anthracite Headlining.
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by Jambers' post='783937' date='Feb 3 2009, 01:09 PM
The 525D (LCI and non LCI - 2.5D) don't have these dreaded beasts, neither do any diesels with the least BHP/output (so the 318d doesn't, but the 320d does though they have essentially the same engine).
I think they are there to create a "swirl" to disturb the air in the manifold to stop any soot etc from depositing itself there for anything coming out via the EGR, at low speeds...
That's what I gleaned after several weeks of investigating this before buying my LCI 525d...and was one reason why I avoided the 530d which I just loved...
There is loads on this at bmwland.co.uk - in the 3 series forum (Potential engine weakness's sticky thread)
I think they are there to create a "swirl" to disturb the air in the manifold to stop any soot etc from depositing itself there for anything coming out via the EGR, at low speeds...
That's what I gleaned after several weeks of investigating this before buying my LCI 525d...and was one reason why I avoided the 530d which I just loved...
There is loads on this at bmwland.co.uk - in the 3 series forum (Potential engine weakness's sticky thread)
#52
Senior Members
Join Date: Mar 2007
Location: Manchester, UK
Posts: 423
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: E60 525d M-Sport Saloon M57N2 3.0d LCI
EXTERIOR: Jet Black, ///M-Aerodynamic Bodystyling, ///M-Rear Spoiler, De-badged, Gradual Tint Windscreen, ///M-Double Spoke 172M 19" Alloy Wheels (with non-run flats & space saver spare wheel) & ///M-Sports Suspension;
INTERIOR: ///M-Steering Wheel, Black Dakota Leather Heated Sports Seats with Electric Lumbar Supports, Brushed Aluminium Interior Trim & Anthracite Headlining.
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by Dr Dave' post='783984' date='Feb 3 2009, 02:21 PM
simple, it overfuels because its been set up for performance, and the fuel/air ratio is biased.
if its set up normally there are no over fueling problems, but im not concerened with economy on this car.
ps: its not common on scoobys either, because type 7 onwards use common rail injection.
and piston 3 problems are only due to the location of the turbo (next to piston 3) resulting in overheating sometimes.
i have 2 fully prepared scoobies.Attachment 70963
if its set up normally there are no over fueling problems, but im not concerened with economy on this car.
ps: its not common on scoobys either, because type 7 onwards use common rail injection.
and piston 3 problems are only due to the location of the turbo (next to piston 3) resulting in overheating sometimes.
i have 2 fully prepared scoobies.Attachment 70963
Scoobies are mapped from the factory in general to 'over-fuel' - this I was reliably informed by one of the leading UK mappers is to help cool the engine amongst other things and is one of the reasons they are so poor - even in standard form - on fuel. Cylinder 3 overheating is very common and is indeed in part due to the location of the turbo, but also because that cylinder is the furthest away to be supplied in line with fuel. This is a relatively common problem on Scoobies when being driven hard, especially on track days!
Whilst not upgraded to your spec, I too had a pretty sorted Scooby in the past. Whilst an awsome car, with buckets of character, loads of fun and like rockets, they are fundamentally a flawed design in essence. I loved mine immensley and still to this day mis the car!
![](https://i73.photobucket.com/albums/i205/Palmo_2006/Engine.jpg)
#53
Contributors
Join Date: Apr 2007
Location: Kajaani, Finland
Posts: 5,851
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: Bmw 530d 2004
![Default](https://5series.net/forums/images/icons/icon1.gif)
Back to topic.
I removed the swirl flaps too and made a DIY for anyone who's interested to do the same.
Here: Removing the swirl flaps in a diesel engine
I removed the swirl flaps too and made a DIY for anyone who's interested to do the same.
Here: Removing the swirl flaps in a diesel engine
#55
Contributors
Join Date: Apr 2007
Location: Kajaani, Finland
Posts: 5,851
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: Bmw 530d 2004
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by Dr Dave' post='787778' date='Feb 8 2009, 03:41 PM
the diesel medal of honour goes to.........................Anzafin................ ................. ![Big Grin](https://5series.net/forums/images/smilies/imported/biggrin.gif)
![Big Grin](https://5series.net/forums/images/smilies/imported/biggrin.gif)
![Unsure](https://5series.net/forums/images/smilies/imported/unsure.gif)
But so many people have already done this and I just followed...
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
#56
Senior Members
Join Date: Feb 2009
Location: Scotland
Posts: 452
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://5series.net/forums/images/icons/icon1.gif)
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
Originally Posted by Jambers' post='783937' date='Feb 3 2009, 09:09 AM
The 525D (LCI and non LCI - 2.5D) don't have these dreaded beasts, neither do any diesels with the least BHP/output (so the 318d doesn't, but the 320d does though they have essentially the same engine).
Do you mean that my 2004 525D doesnt have these annoying engine killers after all
![Big Grin](https://5series.net/forums/images/smilies/imported/biggrin.gif)
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
Thanks,
Bob
#57
Contributors
Join Date: Apr 2007
Location: Kajaani, Finland
Posts: 5,851
Likes: 0
Received 3 Likes
on
3 Posts
My Ride: Bmw 530d 2004
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by Bob525D' post='787900' date='Feb 8 2009, 08:33 PM
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
Hi Jambers,
Do you mean that my 2004 525D doesnt have these annoying engine killers after all
![Big Grin](https://5series.net/forums/images/smilies/imported/biggrin.gif)
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
Thanks,
Bob
![Wassat](https://5series.net/forums/images/smilies/imported/wassat.gif)
I would check the underside of the intake manifold if I could find that metal rod moving the flaps.
#58
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by Anzafin' post='787901' date='Feb 8 2009, 01:44 PM
That's some great news if this is the case, but I'm not completely buying it, yet...
I would check the underside of the intake manifold if I could find that metal rod moving the flaps.
![Wassat](https://5series.net/forums/images/smilies/imported/wassat.gif)
I would check the underside of the intake manifold if I could find that metal rod moving the flaps.
http://www.realoem.com/bmw/showparts.do?mo...hg=11&fg=40
I am sure I read somewhere that no 525d's did have the swirls, but may be wrong!!!!!!
The 525d LCI M57N2 (i.e. the 3.0l) doesn't appear to have them according to REALOEM:
http://www.realoem.com/bmw/showparts.do?mo...hg=11&fg=40
#59
Senior Members
Join Date: May 2008
Location: Aberdeenshire, Scotland
Posts: 253
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://5series.net/forums/images/icons/icon1.gif)
Slightly off topic
Palmo, You are 100% correct in what you are saying
Dave is not quite so right
My car is running over 340bhp and 700nm and not even a wee bit of smoke. Cars with DPF should NEVER smoke unless the DPF is knackered with over fueling :thumbsdown: Yes non DPF cars can smoke on initial throttle until the turbo spins up. If they smoke for more than that they are not set up right.
Smoke is unburned fuel. unburned fuel does not make power
Palmo, You are 100% correct in what you are saying
![Thumbsup](https://5series.net/forums/images/smilies/imported/thumbsup.gif)
Dave is not quite so right
![Whistling](https://5series.net/forums/images/smilies/imported/whistling.gif)
My car is running over 340bhp and 700nm and not even a wee bit of smoke. Cars with DPF should NEVER smoke unless the DPF is knackered with over fueling :thumbsdown: Yes non DPF cars can smoke on initial throttle until the turbo spins up. If they smoke for more than that they are not set up right.
Smoke is unburned fuel. unburned fuel does not make power
#60
Senior Members
Join Date: Mar 2007
Location: Manchester, UK
Posts: 423
Likes: 0
Received 0 Likes
on
0 Posts
My Ride: E60 525d M-Sport Saloon M57N2 3.0d LCI
EXTERIOR: Jet Black, ///M-Aerodynamic Bodystyling, ///M-Rear Spoiler, De-badged, Gradual Tint Windscreen, ///M-Double Spoke 172M 19" Alloy Wheels (with non-run flats & space saver spare wheel) & ///M-Sports Suspension;
INTERIOR: ///M-Steering Wheel, Black Dakota Leather Heated Sports Seats with Electric Lumbar Supports, Brushed Aluminium Interior Trim & Anthracite Headlining.
![Default](https://5series.net/forums/images/icons/icon1.gif)
Originally Posted by Jambers' post='788487' date='Feb 9 2009, 01:42 PM
Actually - I think it might having checked REALOEM - you need to check it out:
http://www.realoem.com/bmw/showparts.do?mo...hg=11&fg=40
I am sure I read somewhere that no 525d's did have the swirls, but may be wrong!!!!!!
The 525d LCI M57N2 (i.e. the 3.0l) doesn't appear to have them according to REALOEM:
http://www.realoem.com/bmw/showparts.do?mo...hg=11&fg=40
http://www.realoem.com/bmw/showparts.do?mo...hg=11&fg=40
I am sure I read somewhere that no 525d's did have the swirls, but may be wrong!!!!!!
The 525d LCI M57N2 (i.e. the 3.0l) doesn't appear to have them according to REALOEM:
http://www.realoem.com/bmw/showparts.do?mo...hg=11&fg=40