'79 633CSi distributor vacuum line routing question

[jc43089]

Hi, working on a friend's early e24, it has an electronic ignition distributor with 2 vacuum lines. All of the diagrams I can find only show one line (they also show the points type distributor). The car has been sitting for 14 years because of a cracked head. We pulled the engine and put a late head on it with the smaller coolant passages and resealed the bottom end. The engine is back in and it is almost ready to run. The only questions we have are the 2 vacuum lines on the distributor.

Background on the car. It was desmogged and had a bunch of Alpina parts installed by Miller Norburn when it was brand new, I think Supersprint headers and Primaflow exhaust that were put on back then too. So there is no smog pump, EGR and all that jazz. Here are a couple pictures. It only has 59k miles on it. Never driven in winter, it is in excellent condition.

[kojo96]

Nice looking car- If you're keeping the original distributer setup with the late model motor then the distributer vac lines go the the throttle body nipples, there are two- the forward line on the dist (closest to the fan) goes to the bottom nipple, the back side goes to the top nipple.
If that isn't clear, shoot me a PM and I'll send you images. I have the same setup in a 79 e23 and they should be the same.

[jc43089]

Excellent, I should have specified, the head is a late head but from a euro car so it matched up with the Ljet distributor. Thank you for the help. There is very little information I could find on the few years with electronic ignition before Motronic took over. I also don't know where to look because I mostly work on the later DOHC engines. The plan is to start it up on Friday if all goes well.

[jc43089]

We tried to start it Friday but the high pressure fuel pump wouldn't work. New Bosch unit coming on Tuesday.

[jc43089]

New fuel pump got it going. We adjusted the timing and took it out for a spin, it drives pretty nice. A few electrical problems that I think are from the body ground by the battery being in poor shape but otherwise it seems pretty good. I will make a new ground strap before messing with anything else. The owner is going to be gone for a few weeks so he was glad to get it running before he left.