I did this in October on my 240z. Rebuilt everything under the car but didn't want to remove the engine. Started with rear end and then did the front. Here is what I did.
- Entire car was lifted up on heavy duty jack stands.
- Bought extra crossmember on ebay and powdercoated it.
- BTW, transmission is installed and trans mount is installed. Just letting you know since you have had the rest of the car apart. Both of these help stabilize the engine.
- Removed radiator, control arms, steering rack, struts, TC rods, everything since all was being powder coated...not radiator.
- Removed hood.
- Used engine hoist with tilt attachment, connected to stock engine lift brackets.
- Loosen engine mounts.
- Lifted engine off mounts.
- Removed old crossmember.
- Installed powder coated crossmember with engine mounts. Installed mount fasteners but kept loose.
- Getting the engine to drop in place on the mounts is kind of the same challenge it always is when you reinstall the engine. At first I was trying to keep the crossmember mounted but loose. This didn't work because it wasn't where it should be. Ended up tightening it up and the install went far smoother. Keeping the mounts a bit loose though helped. I had to fiddle with the hoist and tilting device, lifting, lowering, re-balancing, etc. I did a little pushing and pulling with a pry bar too. Eventually I was able to fasten the mounts and tighten.
- I don't think I would attempt to do this without an engine hoist and tilting device. Also, my engine hoist has a nice long arm / beam which helps since the car was in the air. Trying to do it by supporting the engine with jack stands below, to me, would not give you the movement you need to get everything lined back up.
Yes, I would do it this way again and plan to this summer with my dad's 280z.
Hope this helps. Best of luck.