Plenum

bugg · 09-27-2023, 06:28 PM

Going back to stock plenum and bought a secondhand one off eBay - I stupidly didn't look closely enough before purchasing and realized upon receiving it today that the outlet that vents to the oil separators is broken. Specifically, the little tri-wing plastic piece that helps seat the separator is missing from one side.

How critical is this piece? I figure it helps seat the plenum on the oil separator, and maybe prevents it from bottoming out and maintains a gap.

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Ajolives · 09-27-2023, 07:01 PM

That sucks, if you’re stuck with the part you should be good from an operational stand point. It tucks into the oil separator well.

bugg · 09-28-2023, 06:52 PM

I took a look at other aftermarket plenums, and it looks like I should be safe. The Haimus plenum omits the center tri-wing support which I take as confirmation that it's not essential to oil separator function.

09-27-2023, 06:28 PM	#1
bugg Private 24 Rep 60 Posts Drives: '11 E90 M3 / '95 993 Join Date: Oct 2020 Location: Seattle iTrader: (0)	Plenum - Broken oil separator outlet Going back to stock plenum and bought a secondhand one off eBay - I stupidly didn't look closely enough before purchasing and realized upon receiving it today that the outlet that vents to the oil separators is broken. Specifically, the little tri-wing plastic piece that helps seat the separator is missing from one side. How critical is this piece? I figure it helps seat the plenum on the oil separator, and maybe prevents it from bottoming out and maintains a gap. View post on imgur.com Last edited by bugg; 09-27-2023 at 06:35 PM..
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09-27-2023, 07:01 PM	#2
Ajolives Captain 922 Rep 933 Posts Drives: E90 M3 Join Date: Mar 2019 Location: Tampa iTrader: (0) Garage List 2019 Audi SQ5 [0.00] 2008 BMW M3 [0.00]	That sucks, if you’re stuck with the part you should be good from an operational stand point. It tucks into the oil separator well. Attached Images
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09-28-2023, 06:52 PM	#3
bugg Private 24 Rep 60 Posts Drives: '11 E90 M3 / '95 993 Join Date: Oct 2020 Location: Seattle iTrader: (0)	I took a look at other aftermarket plenums, and it looks like I should be safe. The Haimus plenum omits the center tri-wing support which I take as confirmation that it's not essential to oil separator function.
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