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Slippery Slope Expert
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CIS Pop-Off Valve
I finally got around to pulling the air filter on my barnfind '82 SC this morning and was amazed to find no pop-off valve. I thought those were standard on some SC's, or did I miss something? Engine number is 64C1499, which corresponds to an '82.
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04-30-2013, 11:49 AM
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ROW '78 911 Targa
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Not a factory option, only installed aftermarket.
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04-30-2013, 12:06 PM
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Registered
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Fortunately its not hard to do yourself. It is highly recommended - one unlucky backfire and you'll be way behind on cash. 101 Projects covers it iirc.
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Lillie - 1979 911 SC Targa, The Original 911 SCWDP Car. Currently in open heart surgery. |
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04-30-2013, 12:25 PM
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Now in 993 land ...
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The only thing the factory added on the later SCs was a metal fuel distributor in the air box. The pop off valve never was installed by Porsche. I would recommend adding a pop off valve as soon as possible. Make sure you install it facing the right way (hinge towards the air filter) otherwise it can remain stuck open when it is triggered.
Good Luck! G |
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04-30-2013, 12:39 PM
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Join Date: Feb 2006
Location: Ontario Canada
Posts: 2,947
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as you know i would highly recommend having a well tuned car and passing on the aftermarket short cut.
but that the thing about opinions......
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1976 Yamaha XS360 ( Beats Walkin') 1978 911 SC Targa ( Yamaha Support Vehicle ) 2006 Audi A4 2.0T (Porsche Support Vehicle ) 2014 Audi A4 2.0T Technik (Audi Support Vehicle) |
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04-30-2013, 02:15 PM
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Slippery Slope Expert
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Thanks for all the replies guys. Food for thought, but I'm a ways from having to worry about that.
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04-30-2013, 06:05 PM
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Join Date: Sep 2007
Location: London Ontario Canada
Posts: 209
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I JUST finished installing a pop-off valve on my 1974. I really couldn't figure out why NOT to file down (Dremel) the plastic ribs in the air box so it could sit flush; and get the most surface area contact for the epoxy. I did it and it worked PERFECTLY, I have photos and will post one of these days. More food for thought, be sure not to over eat...
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Extremely Yellow ’74 Targa 2.7 L - aka WIFE’S BANE |
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04-30-2013, 06:24 PM
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Caveman Hammer Mechanic
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Quote:
That's like saying if you are really careful, you will never have an accident....
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1984 Carrera El Chupacabra 1974 Toyota FJ40 Turbo Diesel "Easy, easy, this car is just the right amount of chitty" "America is all about speed. Hot,nasty, bad ass speed." Eleanor Roosevelt, 1936 |
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04-30-2013, 08:17 PM
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Join Date: Feb 2006
Location: Ontario Canada
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Quote:
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1976 Yamaha XS360 ( Beats Walkin') 1978 911 SC Targa ( Yamaha Support Vehicle ) 2006 Audi A4 2.0T (Porsche Support Vehicle ) 2014 Audi A4 2.0T Technik (Audi Support Vehicle) |
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05-01-2013, 01:12 PM
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Keep the Shiny Side UP! Pete Z. Last edited by Peter Zimmermann; 05-01-2013 at 03:42 PM.. |
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05-01-2013, 03:39 PM
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Quote:
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1970 Porsche 914 1.7L, 1982 Porsche 911 SC Targa, 1977 Porsche 924, 1979 Porsche 924, 1999 Ducati 900SS |
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05-01-2013, 04:28 PM
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Heinz
Lillie
1982 Porsche 911 SC Targa
The Trackday Project
The Survivor
Squeaky Duck
