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Author Topic: 1991 318is M42 Air Intake Boot hose?  (Read 6754 times)

e3091318is

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1991 318is M42 Air Intake Boot hose?
« on: July 16, 2013, 11:00:32 PM »
Which hose fits in the bottom hole under the intake boot closest to the throttle body.  Sorry, I know it isn't easy with no photo, need to take one tomorrow.
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bme30

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1991 318is M42 Air Intake Boot hose?
« Reply #1 on: July 17, 2013, 10:17:33 AM »
I know where you are talking about.  On my car its sealed. 
The valve cover line goes to the hole closest to the afm.  And the icv connects to the bottom of the tb.  No clue what that sealed one was for. 

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Slowered318

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #2 on: July 17, 2013, 10:25:18 AM »
Quote from: DrJeremy28 on July 16, 2013, 11:00:32 PM
Which hose fits in the bottom hole under the intake boot closest to the throttle body.  Sorry, I know it isn't easy with no photo, need to take one tomorrow.

That extra inlet on the intake boot? That's for the nitrous fogger.
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bme30

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1991 318is M42 Air Intake Boot hose?
« Reply #3 on: July 17, 2013, 07:45:13 PM »
I just got my replacement elbow in the mail today.  It has both open as well.  So ill just use the plug and elbow from the old one to the new one.
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bmwman91

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #4 on: July 17, 2013, 07:53:33 PM »
Yup, the hole closest to the throttle body is supposed to be plugged. I am not sure if anyone knows why that is there.
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e3091318is

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #5 on: July 17, 2013, 11:10:24 PM »
I believe it is for the E36 M42 engines and the E36 may have an extra hose.  Right now I have it plugged with an extra oil sensor I had lol. 
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Slowered318

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #6 on: July 18, 2013, 03:57:04 AM »
Quote from: bmwman91 on July 17, 2013, 07:53:33 PM
Yup, the hole closest to the throttle body is supposed to be plugged. I am not sure if anyone knows why that is there.

My best guess is that the boot moulds were made for plumbing with or without the heater plate.
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kpjo4

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #7 on: July 20, 2013, 04:50:21 AM »
To the above comment, I have an e36 m42b30 and I was messing with my oe intake boot and I can confirm we only have 1 hose bung.
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bme30

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1991 318is M42 Air Intake Boot hose?
« Reply #8 on: July 20, 2013, 05:55:29 AM »
M42b30?

How is that even possible?
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kpjo4

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #9 on: July 20, 2013, 06:01:18 AM »
Quote from: bme30 on July 20, 2013, 05:55:29 AM
M42b30?

How is that even possible?


O shit i mean M42B18, I also own a 335i which uses the N54B30; You see I just made a senseless mistake and I talk about the N54 way more lol, apologies.
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Slowered318

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #10 on: July 20, 2013, 06:24:17 AM »
Quote from: kpjo4 on July 20, 2013, 04:50:21 AM
To the above comment, I have an e36 m42b30 and I was messing with my oe intake boot and I can confirm we only have 1 hose bung.

You got a 3.0 4 cylinder? Only Porsche would build something like that! LOL

Anyways, the original question was regarding an e30 M42. Slightly different intake and happily has two teats on the underside. ;)
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ti_tony

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Re: 1991 318is M42 Air Intake Boot hose?
« Reply #11 on: July 20, 2013, 11:18:38 AM »
We have a e36 ti, 1995 and the bottom "nub" has a clip coming out of it for the AFM wire's.
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