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Upper bell housing bolts should both be the same size and pitch ( 12x1.5x50). Did not notice these were not the same pitch when I removed them from the old motor, only noticed when Stephen and I were installing them into the new motor:
Luckily, the local independent hardware store has a surprisingly good metric selection ( much better than Lowes or Home Depot)
I then pulled whatever hoses, lines etc I could away from the firewall as best I could and stuck the foil on.
Now that's done, you can delete one of those items.
The sensor on the bell-housing (grey wire) was/will never be used. It can be removed and the hole plugged. (TDC sensor for a factory diagnostic machine.)
On a serious note, next time I pull a motor, since you have to drop clutch anyhow, I think I will leave bellhousing connected during pull, and just disconnect at torque tube instead. Even with the correct wrenches, top bellhousing bolts are a pain, but with clutch out, torque tube<>Bellhousing bolts are easy.
In other lessons learned:
1. When I pulled the motor, I had the lift come over the side;
2. When Stephen and I dropped the "new' motor in, we came in from the front.
Next time, I will do both from the side. With my lift at the front, the jack piston is right at the front bumper, risking damage to bumper. I had plenty of clearance from the side to get the motor over the fender, even with car up on liftbars at jackstand lowest settings.
I was at 1/2 ton setting on lift, and got plenty of height.
Also, since then connection across the load leveler is to the diagonal lift points, a strap around the lift arm down to belt pulleys is useful for true fore-aft leveling when dropping the motor in, as load leveler adjustment also causes left-right movement.
I removed and reinstalled my engine with the bell housing and had plenty of room to pull it forward and clear the firewall. All accessories and crank pulleys were removed though as well as the radiator.
Some other interesting differences between the '85 S3 motor and the '86 S3. The '85 dip stick is the ugly bent coat hanger style. You can't even easily upgrade it with the '86 dipstick because they are different lengths:
Why is that? Different tube lengths:
Why not just swap the tube too? Can't do that because the tube mounting scheme is entirely different and require a whole different center belt cover:
'85 Cover:
Versus the '86 cover. Note the extra bulge and mounting point for dip stick tube?