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Registered
Join Date: Sep 2005
Location: So. Cal.
Posts: 11,247
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MFI Air intake question
Has anyone ever R&R'd the air flapper mechanism on an early 911? The part number is 911 108 015 00 and is called a Regulator Housing. I think it was an emissions device added some time around '71. Anyway I mistakenly took mine apart rather than just removing it and now I am having trouble with a spring inside. I went to PET but could not find an exploded diagram.
This is it installed   BTW - do I need it?
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David 1972 911T/S MFI Survivor |
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02-03-2011, 11:21 AM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,493
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It was an emissions device. That spring controlled flap is operated by heat. The flap is closed when engine/outside air is cold to allow intake to draw in warmer air from heat exchanger. Opened up as engine warmed up. Your engine will run just fine without it. As to how to repair it, can't help you there.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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02-03-2011, 11:25 AM
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Registered
Join Date: Sep 2005
Location: So. Cal.
Posts: 11,247
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Thanks. There are actually two "flaps" and I am having trouble with the spring on the one that opens with heat. The other one open with throttle position.
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David 1972 911T/S MFI Survivor |
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02-03-2011, 01:22 PM
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Registered
Join Date: Dec 2008
Location: San Antonio, Texas
Posts: 3,590
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It was a warmup device for emissions. Just take the whole assembly off and store if you ever need to show the car.
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1973 911S (since new) RS MFI specs 1991 C2 Turbo |
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02-03-2011, 01:30 PM
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Join Date: Jul 2008
Posts: 1,393
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Hello
Does anybody have one for sale?
Thx |
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02-03-2011, 02:04 PM
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Porsche Enthusiast
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Are these emissions device and snorkel still available?
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74 Carrera 2.7 | 75 Turbo 3.0 | 97 Boxster | 12 Cayenne S GONE >> 04 GT3 | 75 Carrera 2.7 MFI | 76 Carrera 2.7 MFI | 77 Turbo Carrera 3.0 | 86 Carrera 3.2 |
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01-30-2013, 02:21 AM
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I'll sell you mine, just need to find it.
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72 911 Although it is done at the moment, it will never be finished. |
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01-30-2013, 03:05 AM
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Tobluforu
