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      06-07-2014, 01:50 PM   #1
iv-128i
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Oil inside intake manifold

Ok so I've installed my DISA intake manifold yesterday by following this great write-up made by Stig ! It took me about 2hrs in total and job can be easily done by anybody with minimal mechanical skills.

Now, in my old intake manifold I've noticed an important quantity of oil !!
I would like to know if it is normal or there is problem somewhere....



Here is the oil quantity that went down after my intake manifold was sitting on the floor for 30min....
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      06-07-2014, 02:15 PM   #2
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WTF...
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      06-07-2014, 03:41 PM   #3
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I think some oil is normal.

Edit: Might look into replacing crankcase breather valve.

Last edited by MarkkyyMan; 06-07-2014 at 04:00 PM..
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      06-07-2014, 04:07 PM   #4
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Quote:
Originally Posted by MarkkyyMan View Post
I think some oil is normal.

Edit: Might look into replacing crankcase breather valve.
Mine was the same I had some oil but it was super clean other then that. Car had 21k when I saw it. Might look into a oil catch can maybe?
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      06-07-2014, 04:13 PM   #5
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http://www.pelicanparts.com/BMW/tech...eplacement.htm

I am not saying this is 100% what is wrong, just a good place to start.
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      06-07-2014, 05:09 PM   #6
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Mmm looks like money to me lol. How can we do a oil catch can on a N52? I can just go find a off brand and mount it somewhere. A catch can is a catch can.
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      06-07-2014, 05:14 PM   #7
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In all my previous turboed cars I was installing a catch can but on N/A car I never heard anybody doing this...
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      06-07-2014, 05:19 PM   #8
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Quote:
Originally Posted by ivan-128i View Post
In all my previous turboed cars I was installing a catch can but on N/A car I never heard anybody doing this...
I did in my last turbo car too, I mean it wouldn't hurt lol I just want to know what hose to tap into.
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      06-07-2014, 06:48 PM   #9
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It's normal. I mean you don't want a ton of oil in there but mine probably had a cup or two when i swapped.

edit: now that i think about it, it was probably half a cup. The only reason i noticed it is because it spilled onto the driveway. It wasn't nearly two cups.
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      06-07-2014, 07:38 PM   #10
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Some is normal, hard to tell exactly how much we are looking at there.
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      06-07-2014, 08:44 PM   #11
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Where it comes from?
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      06-07-2014, 10:26 PM   #12
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Crankcase vent. Crankcase has an oil mist in the gas, sometimes it finds it way to the intake manifold.

Last edited by MarkkyyMan; 06-08-2014 at 12:59 PM..
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      06-08-2014, 07:18 AM   #13
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Quote:
Originally Posted by MarkkyyMan View Post
Crankcase case vent. Crankcase has an oil mist in the gas, sometimes it finds it way to the intake manifold.
Exactly, which is why you have that oil return line on the firewall side of the manifold.
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      06-08-2014, 07:25 AM   #14
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ok so after some reading if my understanding is fine our engines have a crankcase vent valve integrated to the valve cover !

btw here is an interessing reading about N52 and N54 technical specs : http://wenku.baidu.com/view/ea653b01...8d15a4f3d.html
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Last edited by iv-128i; 06-08-2014 at 07:45 AM..
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      06-09-2014, 05:24 AM   #15
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If I remeber correctly, people were installing catch cans on N/A s2000's for this same reason. It's been awhile and I've had many cars after the s2000, so I may be mistaken.
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      06-09-2014, 06:16 AM   #16
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Quote:
Originally Posted by ivan-128i View Post
ok so after some reading if my understanding is fine our engines have a crankcase vent valve integrated to the valve cover !

btw here is an interessing reading about N52 and N54 technical specs : http://wenku.baidu.com/view/ea653b01...8d15a4f3d.html
We do now, it used to be mounted on the intake manifold on the early versions of the N52, which you can see in my DISA thread.
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