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Registered
Join Date: Sep 2005
Location: Louisville, CO
Posts: 2
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Need help : Engine / CIS vacuum connections
Hi Everyone,
I just installed my rebuilt engine and gearbox into my 1978 911SC (Euro) Targa and have a few engine bay connections that I need help with. The picture shows these numbered one to four. Could someone with a similiar year 911SC help me out? BTW, I don't have cruise control or a brake booster....found reference to these while searching the forum messages. Hope that helps. Little video clip of the initial start-up ....no rear muffler! http://spd_racer911.home.comcast.net/Porsche_startup1.AVI Thanks, David  
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09-06-2005, 08:27 PM
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Registered
Join Date: Jun 2005
Location: El Paso, Tx.
Posts: 80
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Welcome and bump!
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'79 911 SC |
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09-07-2005, 02:06 AM
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Registered
Join Date: Jun 2003
Location: Jax, FL
Posts: 89
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Number 1 goes to the charcoal canister. Evap/emissions containment. Number 2 goes to the vacuum limiter(kinda a j-turn metal tube/hose that connects to the highest point on the rear of the throttle body. If you had a brake booster, it would Y off of this point.
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83 SC Coupe 58 Speedster Previously 76 914 84 944 |
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09-07-2005, 02:43 AM
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Registered
Join Date: Sep 2005
Location: Louisville, CO
Posts: 2
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smcdermaid,
Thanks for the reply. I don't have a charcoal canister that I can find. Wondering if the Euro models had them? Can anyone else help out with 3 and 4 ?? Thanks, David |
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09-07-2005, 10:34 AM
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Registered
Join Date: Jun 2005
Location: El Paso, Tx.
Posts: 80
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What is the purpose of the charcoal canister? Should they be replaced periodically? Source?
Thanks, dg
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'79 911 SC |
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09-07-2005, 10:44 AM
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Unregistered
Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
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The charcoal canister temporarily absorbs evaporated fuel fumes from the fuel system.
When the engine is started it pulls a slight vacuum on the canister and draws out the fumes into the intake and burns them. On my 1980 SC it is located in the passenger side of the engine compartment in front (towards front of car) of the oil tank. It does not hurt performance, so the only advantage to taking it off is a slight weight savings. Even though I am far from a tree-hugger, I'd rather have a few extra pounds on my street car than to allow unburned fuel to evaporate into the air we have to breathe. |
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09-07-2005, 11:58 AM
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