I'm asking for a bit of help from those in the know about these things please. The orange rubber seal that sits inside the inlet air pipe to the turbocharger on the compressor side on my Sep 2007 Dooper is shot, it's split 2/3 of the way around. The part that I got from BMW, selected by me and the parts fella looking at the MINI drawing is very different, it's labelled as a swirl generator, although it sits in the right place on those drawings and it fits perfectly into the intake pipe and onto the turbo on the car The part number from the orange seal doesn't show up on the BMW OEM site, but when Googled came up of a French Citroen forum discussing the turbo/intake seal on the Picasso1.6 HDi, same engine (well that's what I think they were talking about!). Is the swirl generator an upgraded part or do I need to source an orange seal from somewhere? Thanks in advance.
No, it's not the swirl generator that you want, it's the Citroen part. Mini wants you to buy the entire intake piping section from the MAF to the turbo in order to get the little orange seal that is available here:
EDIT: I got curious about the swirl generator. Since my Mini is going in on Saturday for some work, I asked the dealership to order and install the swirl generator (not an expensive part). Apparently it is supposed to increase the turbocharger efficiency and decrease engine noise.
I'll update after the install.
Last edited by MiniDeLux; Dec 16th, 2013 at 11:40 AM.
Reason: Updated information
Okay, as promised I had the swirl generator installed today. I confirmed with the service tech that it's an upgraded part for the orange seal. It's made of a much harder plastic material. It's quite rigid, almost like a rigid kind of silicon. However, the fins are flexible and change angle with airflow. It's supposed to generate a swirl/vortex in the air that increases the momentum of the compressor vanes, thereby increasing turbo efficiency. It's quite sturdy so I have very little fear of anything breaking off and being ingested by the turbo.
It's supposed to improve turbocharger efficiency/performance and produce a quieter engine. I've driven about 75km with it today, various ups and downs, highway, etc... First impression is that it does increase the response of the car a little bit and definitely there is an increase in the pull in the lower revs. Not much difference in the higher end range I would say. Nothing major but for the price you can't go wrong.
Also, engine is quite noisy by nature, but I have to say it's slightly quieter under full acceleration. Not much, but definitely a little.
Probably the best bit is that I was charged €2.45 for the part and it is sold separately from the intake piping making replacement a cinch. It seems to grip the turbo inlet better than the orange rubber as well. I expect that it won't lead to the notorious splitting issue with the current orange seals.
Couple of photos attached. Happy to answer any questions.
Part number is: 13 71 7 807 061
Part name (in German) is: Drallerzeuger (even sounds cool!). English name is "swirl generator".
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