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Registered
Join Date: Apr 2003
Posts: 56
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Cis air box size
i blew my air box on my 1983 3.0 engine ,because i was careless
and did`nt install a popoff valve ,so now i have to change it The problem is that i do not know the size of the air box If i take the serial number of the intake runner ,will this tell me the size of the new box all help welcome 
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11-04-2003, 07:15 AM
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Registered
Join Date: May 2002
Location: Wisconsin
Posts: 739
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The airbox is Porsche part number 911.110.904.00 and the same one fits 2.7 and 3.0 from 1974 to 1983.
Happy hunting.
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1977 911S 1973 Alfa Romeo GT Veloce 1997 Lotus Turbo Esprit V8 2016 AMG C63S |
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11-04-2003, 07:23 AM
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Somewhere in the Midwest
Join Date: Oct 2001
Location: In the barn!
Posts: 12,499
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I can't remember exactly, but at some point Porsche/Bosch included a cold start fuel manifold inside the airbox. I want to say it was in '81.
Edit: but you can still use an earlier air box for a later SC. Last edited by MotoSook; 11-04-2003 at 07:41 AM.. |
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11-04-2003, 07:29 AM
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Join Date: Oct 2003
Posts: 3,019
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You can't use the airbox from a 78 or 79 as the intake runners are larger. The cold start manifold was added around 80 or 81 to prevent airbox backfires but hey, yours blew w/ it so it seems to have limited value ie. you could just as easily use a 2.7 airbox.
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11-04-2003, 07:43 AM
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Somewhere in the Midwest
Join Date: Oct 2001
Location: In the barn!
Posts: 12,499
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A-CIS Air Box, 911 (1977-79), 911 Euro (1978-83) C-110-906-00 372.50
B_CIS Air Box (38mm Intake Port), 911 (1974-77), 911 (1980-83) Two sizes. SIZE...CSV fuel manifold is a different thing |
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11-04-2003, 07:45 AM
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Make sure you find all the shards and pieces of your old one if you haven't already, Could complicate matters if sucked in
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Harlan Chinn Pacific Northwest Region 1998 Carrera S ArcticSilverMetallic 1982 911SC PazificBlauMetallic |
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11-04-2003, 07:46 AM
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1982 Porsche 911SC 3.0 litre
Katja
