I just finished the engine swap for my 90 740 turbo! Charged the old battery after adding a little distilled water to it, installed everything, including coolant and oil, and it started right up after I tightened down the fuel feed line.

Thanks to everyone that helped me, I removed the blown 87 b230ft with unknown miles (I put 100K on it) and installed a 93 b230ft from a crashed 944T successfully.

I'm going to compile a write-up for it because I don't know of one and most of the time I wasted was on minor stuff, not on major components of the swap. Important detail I overlooked was using the turbo oil feed line that was on the replacement car - it's incompatible even though it looks like it fits.

Happy bricking and Happy New Year!
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1990 740 Turbo, on its way to stock specs, maybe beyond

Congrats! May Frank the Tank have many, many more years.

Yes, Congrats!
A comprehensive write up of the procedures would be a valuable contribution to the FAQs. And as you suggest it very often is the unexpected details that can both take time and are undocumented that are real hurdles on jobs like this.

Thanks, All the Best for 2011,


Rob

Are you getting a CEL due to the EGR issue? How did you solve it?

I kept the complete EGR setup (92 setup and computer, only the dealership/PO knows why). It's only been run for a few minutes so far, due to the wrong oil tube for the turbo dumping oil out. I'm going to put in the correct tube tomorrow, burp the coolant, and flush the transmission fluid.

I think your solution might wind up being a 49-state ECU (no egr) instead of a CA ECU. I think that the CA ECUs were the only ones with EGR for a while.

The new manifold didn't have any cold-start injector either, so I kind of had to use the old manifold. If not, no cold start injector, and I'd have the egr to deal with.

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1990 740 Turbo, on its way to stock specs, maybe beyond

Congrats! Feels good doesn't it?

Feels awesome! I can't wait to drive it. The wrong oil feed tube means I put about 2 quarts of oil on the ground in 2 minutes. I guess it has better oil pressure than the last one! :D
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1990 740 Turbo, on its way to stock specs, maybe beyond

Congrats Will, great news.