Time for an update: I called chappy and some others all excited about getting the Alien running last saturday night. By sunday morning I was back pulling the engine out. I developed a real bad water and even worse oil leak. Neither looked possible to fix with the engine in the car.
Now remember, I'm trying to make the RCR Wednesday and the car has been in storage for a long time.
It took all day Sunday to fix the water leak. I discovered the oil seal on the pump was pushed out about 1/8". I removed the seal and cleaned up all the oil. I was out of Yamabond, which is what I usually use to assist with securing these seals. I glued the seal in with JB 4 minute epoxy to be sure the seal wouldn't push out again.
I reinstalled the engine Sunday. I fired it off this morning and ran it about 3 minutes when I noticed oil leaking again!
I figured maybe the pressure relief valve was sticking. I pulled it and cleaned it an reinstalled the cap with an extra aluminum washer to drop the pressure. Still leaked.
I called 928 International. I explained the issue to Jim one of the counter guys. He solved my problem over the phone by asking about 3 questions in about 1 minute. It seems there is an early and late oil pump and they are just slightly different.
During my rebuild I grabbed the cleanest pump of three that I have. It turns out the pump I used has the re-designed seal relief hole that gets blocked off if you install it in the early block. This causes the seal to balloon and leak.
Now that I know the leak isn't from the balancer or the block seam I pulled the pump with the engine in the car. It is possible to do, but the pump just clears the firewall. It is about a half hour job with the engine in the car. I matched up my three pumps and there is a clear difference in the seal relief location. I installed the early cast steel pump and put the late model one on the shelf.
So, After a two day set back I still need to install the axles and shift rod, Hit it with the timing light, Change the Auxilary air valve and wash about 2 lbs of dirt off the top surfaces.
I think I'll be ready to roll Wednesday early...