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911 carrera 3.2 (1985)
 
kees's Avatar
 
Join Date: Sep 2001
Location: Harmelen, the Netherlands
Posts: 656
Porsche Crest Ambient air valve

I've bought a new ambient air valve, bracket and hoses.

Technical Bulletin says: connection for the short hose is marked with an arrow. I'm a little bit confused. Can anybody point out where to put the large hose and the short hose? The small hose is obvious.

Thanks,
Kees

Old 02-13-2018, 02:38 PM
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Others will chime in, but I suspect that as long as you hook up the vacuum line to the smaller bottom nipple, it won't matter which way you hook up the oil tank vent hoses.
Old 02-13-2018, 02:49 PM
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911 carrera 3.2 (1985)
 
kees's Avatar
 
Join Date: Sep 2001
Location: Harmelen, the Netherlands
Posts: 656
Porsche Crest

Thanks for your reply, but there's definitely an arrow on the valve so it seems to me it matters.

Can somebody please take a picture of their (911 3.2 > 1986) ambient air valve?


Kees.
Old 02-15-2018, 02:52 AM
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This is the only picture I can find, it's from a 1987 3.2 -



The flow is from the oil tank to the throttle body.

Mike
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Old 02-15-2018, 05:18 AM
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Quote:
Originally Posted by MConn View Post
.....
The flow is from the oil tank to the throttle body.

Mike
I agree - it is to provide warmer air from the oil tank to prevent throttle body icing in cold conditions. There isn't much in the Bentley manual beyond this info. My '87 has the original Pierburg part and it looks like Mikes' photo.
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'87 Targa Carrera 3.2 - Fabspeed Cat Bypass, M&K Muffler, SW Chip
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Old 02-15-2018, 06:14 AM
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