Call me crazy, but don't you think maybe you ought to get the engine running and broken in before you even start thinking about forced induction? You've still not got it together and running, let alone the difficulty you've had with parts. I don't know you too well but given what I do know you seem like once you get it working you're going to be hammering the poor thing around every curve you can find to make up for lost time- I don't see that sitting well for the health of the engine, and you're considering force feeding it. That sort of thing should be put off for a good bit of time after you get it all together and running so you can work out whatever kinks you'll have and break it in properly.
Im not going to call you crazy, since I don't think you fully understand what I intend to do with this car.
The thing is, that Im planning to break the engine eventually. I can get a new used engine for ~100?, and this one has done a lot of kms and is on the latter half of it's life. When it blows up, I'll buy a new engine and fit proper internals (Saab rods and Mahle pistons) Then I'll have most of the FI parts (IC, extra injectors, exhaust manifold, boost pipes, downpipe etc.) ready for the engine that will actually be suited for the job.
As I said, Im not at all sure if im going to put it on the Sierra, and If I am, im going to make it cheap and cheerful and run 0.5bar max until it gives in. No, Im not the most experienced person in this field, but I have friends who know a lot more about this than I do. Im going to take this as a learning experience, afterall, Im not going to blow up anything expensive in the process. As I said in one of my previous posts, I've ditched the idea of the Sierra being a daily driver, it's purely a project car now. I don't expect it to be capable of reliable transport in the next 2 years, and I don't need it to be, thats what the Volvo is for.
The plan is:
1. Weld up an exhaust manifold as welding practice.
2. Get a cheap turbo (T03 or T25 most likely.)
3. Get a cheap chinese Intercooler.
4. Get extra injectors and run them off an oil pressure switch to provide more juice when on boost
5. New (used) fuel pump to provide more fuel for the extra injectors.
6. Fit Brakes from a V6 model.
And before you say anything about getting the car running first, Im ofcourse going to do it as soon as I can. You try working in sub -20 Centigrade temperatures. Im 100% sure that it would already be running if I hadn't run out of time last Autumn. Im studying to become a traffic engineer, which is going to take the next 3 years of my life, and for that time, Im most likely not going to need a car that much. For that time, Im prepared to keep this as a project, It's a hobby.
We'll see you with adaptech and 2 turbo sierras at the 2018 ringmeet! Mark my words