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911E vacuum pipes?
I am in the process of refurbishing a 1973 911E Targa. I am trying to replace all the vacuum pipes with SS braided ones (I know I don't need that spec but I had some piping, of the right diameter, so what better use than to make the engine compartment look good). I didn't remove the old ones and am having trouble finding where they go and what route they took.
The engine is a 2.4 with fuel injection so if anyone has a schematic or can give me any info I would be most grateful. |
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01-24-2010, 06:08 AM
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Join Date: Feb 2008
Location: Altamonte Springs, Florida
Posts: 342
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Are we talking vacuum or emissions here? The vacuum system is very limited on these motors. Basically there is a small diameter (ID of ~3mm) hose that connects to the front of the intake maniflds and "T"s off to the vacuum pot on the distributor. As for emmisions hoses, there are two lines (ID of~12mm) in the engine compartment, one connects to the back of the air cleaner housing and the other connects to the back of the engine shroud. Both of these lins go down behind the transmission and connect to hard lines at the back of the center tunnel.
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FC '73 911 Track Car '99 996 Daily Driver '93 968 Wife's Car '05 Cayanne S Family Car |
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01-25-2010, 06:58 AM
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It is the vacuum pipes ID 3mm. I have the two from the front of the manifolds and to the distributor. I then have the same 3mm connecting each ram stack but am not sure where the pipes from the rear of these go. I have assumed that they are connected to each other but then (looking at the 'T' pieces involved) must go somewhere else...???
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01-25-2010, 12:32 PM
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Join Date: Feb 2008
Location: Altamonte Springs, Florida
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The "T" and "L" connections on the plastic velocity stacks are not vacuum lines...they are fuel lines used for cold start enrichment. These fuel lines connect all of the stacks in each bank together then both banks connect (from the back side of each bank) into one line that connects to the top of the cold start solenoid that is on top of the fuel filter housing.
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FC '73 911 Track Car '99 996 Daily Driver '93 968 Wife's Car '05 Cayanne S Family Car |
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01-25-2010, 02:23 PM
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Thanks for that. I now understand how I got confused with the piping. They were all the same size so I thought they did the same job (although it did seem excessive for Vacuum).
The stainless braided hoses I have used will do this job brilliantly. Thanks again. John |
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01-26-2010, 08:19 AM
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