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Ahhh, that sounds lovely.
I ran into both the problems with which belt goes on first, which groove to put them in, and that you have to use an open end wrench on the fan nuts. THAT was a fun few weekends.
As for bushings, I guess they help keep things running smoothly and reduce wear on metal parts. Metal dents, rubber springs back....?
If you're going to do the breather box, it's not too bad.
No real need to remove the intake manifold.
I did it in 45 minutes, including having to deal with EGR nuts and whatnot.
So, take off your intake hose from the intercooler up to the throttle body. Disconnect the Idle control valve (IAC or ICV) and move the bracket down (be careful not to short the alternator contacts to your ratchet on this part).
If you have EGR (I hope you don't, but things come apart just fine):
The bracket that holds the EGR assembly to the block shares bolts with the breather box. You'll need to disconnect the EGR intake and exhaust tubes (I think with 21 or 22 mm wrenches. They're huge, I just used a vise grips) They're dry, you just need to break the rust free.... heh. "Just". I had the whole car rocking with how much I was whaling on them.
Also disconnect the EGR tube that goes into the top of the intake manifold.
Assuming that you have the EGR valve and egr-intake tube removed, now you might be able to reach a ratchet into the space you have to remove the bolts from the block.
I found a good use for a twist-handle ratchet I'd bought a while ago, you might want one. You can rotate the grip instead of moving the ratchet handle.
Two bolts, lots of cursing and twisting (and not breaking anything, or it will drop into the oil pan...) DO NOT remove the tube where the breather box fits. You'll break your oil pump. Remember how the heater hoses and wire bundles are arranged, or you'll have to move them around and there's very little room.
Good Luck.
Even with all that to consider ^^^ I got it done in 45 minutes.
Happy bricking,
Will
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1990 740 Turbo, on its way to stock specs, maybe beyond
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