77 911S Injector Plumbing

[offyman]

I am finishing up the rebuild of a '77 911S. My customer brought it in a basket.
I am now in need of a good diagram of the injector plumbing. or pictures of same.
I have looked in the books I have(Haynes, Wayne's How to Rebuild and the parts
books. But nothing that shows all connections. Any help would be appreciated. TIA.
Lee Mullin

[boyt911sc]

Originally Posted by offyman

I am finishing up the rebuild of a '77 911S. My customer brought it in a basket.
I am now in need of a good diagram of the injector plumbing. or pictures of same.
I have looked in the books I have(Haynes, Wayne's How to Rebuild and the parts
books. But nothing that shows all connections. Any help would be appreciated. TIA.
Lee Mullin

Lee,

From the top of the FD (fuel distributor), there are seven (7) outlets. Six (6) look the same and one (1) odd one. The odd one is for the WUR. Connect the injector's fuel lines for cylinders 1-2-3 to the left side outlets (FD) and the rest to 4-5-6 cylinders.

The main delivery fuel line from the fuel filter goes to the back of the FD (inlet) and second smaller fuel line from this inlet goes to CSV (cold start valve).

Another fuel line connected to the back of the FD is the fuel return line that goes back to the gas tank. I don't have any pictures of a '77S CIS engine but do have '78-'79 SC engines which are very similar with your engine's fuel lines configuration.

Tony