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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N57 / M57 Turbo Diesel Discussions - 335d > Buying replacement Swirl flaps



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      03-09-2016, 10:23 AM   #1
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Question Buying replacement Swirl flaps

My swirl flaps are leaking oil.

Can you buy replacement ones from BMW? Having trouble finding them on the exploded view........
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      03-09-2016, 10:51 AM   #2
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Quote:
Originally Posted by mjn77 View Post
My swirl flaps are leaking oil.

Can you buy replacement ones from BMW? Having trouble finding them on the exploded view........
The flaps come pre-assembled as part of the intake manifold AFAIK. Not sure you can buy them seperately.
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      03-09-2016, 11:04 AM   #3
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Yes, looks like they are part of the inlet manifold.
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      03-09-2016, 12:12 PM   #4
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Careful. It depends where the leak is coming from the flaps. The rectangular port gaskets are certainly replaceable. If leak coming from pivot axis of flap, then perhaps another flap needed. I will go consult a link I have and let you know.

Got a picture for us?
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      03-09-2016, 12:18 PM   #5
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Here is the link I consulted.
http://5series.net/forums/diy-do-you...-engine-53457/

see pictures #10, #11, and #12. I removed my flaps and cleaned them as part of overall intake cleaning. Dental pics and lots of carb cleaner got the job done. That close up of the removed and cleaned flap looks like it has a brownish/orange sleeve around it for sealing it into the intake manifold bore.
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Last edited by BB_cuda; 03-09-2016 at 12:24 PM..
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      03-09-2016, 12:25 PM   #6
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Sorry, no pictures. Just what my mechanic tells me.

BMW should be covering this under their warranty but they're weasling out of it at the moment.
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      03-09-2016, 01:02 PM   #7
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Print out that first picture I posted and ask him to point to where the leak is.
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      03-09-2016, 03:28 PM   #8
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I will do.

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      03-09-2016, 07:09 PM   #9
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I'm pretty sure that the European swirl flaps are different than the US flaps - certainly the drive is electrical in the USA/CA. This is detailed in the various training docs that have been posted.
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      03-09-2016, 07:51 PM   #10
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There are no oil on swirl flaps, so whatever leaks the problem is not in the swirls, the problem is what oil is doing over there?
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      03-10-2016, 04:50 AM   #11
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Quote:
Originally Posted by Lexx.md View Post
There are no oil on swirl flaps, so whatever leaks the problem is not in the swirls, the problem is what oil is doing over there?
Yes, that is the main concern.
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      03-11-2016, 02:55 PM   #12
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Concerning that link I posted. The guy who wrote the 5 series based M57 intake removal thread is in Finland. So, the swirl flaps shown are European but may or may not match your 335D specific ones. My North American ones don't have the orangish looking plastic on the butterflies themselves. Mine are all metal with plastic body and rubber seal that the butterfly seals against.

I had some oil too but nothing externally leaking though. I have catch can so hopefully the oil is way slowed down now. Another thread going where guy shows his swirl flaps and they are really caked up. He has North American car as his profile says British Columbia.
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      03-11-2016, 03:34 PM   #13
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      03-12-2016, 02:57 AM   #14
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I have us swirl flaps and the rod , pm me if interested
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      05-03-2016, 09:01 AM   #15
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Update: replacement inlet manifold and oil filter gasket replaced under warranty.
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