Well, long time no update but I have finally made some progress. Mike aka VCH indeed had a pile of stuff I could use including a fuel injected dual-outlet manifold and an earlier aluminum intake. After stopping over at his compound and enjoying the sights and food of Maryland, I returned ready to rock. Then I let it sit for another three weeks.
But today:
Got the old manifolds off pretty easily. The manifold to downpipe connection put up a fight, there really isn't a good way to get at those nuts (more on that later). Once the manifold was off I saw that it had not actually cracked, instead...
I'm not sure how all that metal corroded away, but you can compare that exhaust flange to the one adjacent and see how much metal is gone. I'm assuming the previous owner drove the car with a stud broken off for a long time.
Ah, much better. BUT how to get these two pieces that were never actually installed together by Volvo and which have different flange thicknesses to bolt flush to the head?
Enter my patented stagger-washer. Basically I bought eight of those thick Volvo manifold washers, stuck two in the vice at a time, mig'd them together, and then cut half of the bottom one off to ensure a nice, tight clamping force on the manifolds. Worked great.
So here it is, parked outside for the first time in forever (and with a fresh gas filler neck rubber seal). Overall it was a success; I haven't even re-tuned the carbs and the car revs so much more freely than it did before. So that's a plus. It's also quieter, so that's a plus too. However; there are some negatives:
- The water pump is dripping coolant now and I'm not sure from where. I replaced the o-rings at the top when I did the headgasket and the one for the pipe that goes around the back of the head. Not sure what happened there...
- There is an exhaust leak at the downpipe to manifold connection. I replaced the studs with ones from a Dorman kit that comes with studs and brass nuts. There is a very small shoulder between the two threaded parts (just like the studs that were on the old manifold) but I worry that [i]perhaps[/i] the shoulder is slightly too bulged out and is preventing the two surfaces from mating completely. So that will have to get figured out at some point.
- I still haven't welded the new trunk floor in. All in good time!