I'm surprised so many of you answered without asking the "obvious" question, which is:
What do you mean by 1mzfe? Does it include the transmission too? The alternator, the starter motor, A/C, what? I am in the middle of transplanting this motor into my Corolla, so I want to know what everything under the hood weighs, not just the block and heads and manifolds.
Unfortunately, I don't know the answer either exactly. I made a balance beam scale and weighed my 4age and 4agze motors and when the engine comes out of the Solara, I plan to weigh it the same way, but I am still a few weeks away from removing the Solara engine. If anyone is interested, they should keep an eye on my website:
www.ozone1000.com.
I can tell you that the E58 transmission in my Corolla which is very similar to the one in the Solara weighs 110 lbs. My expectation is that the E153 weighs about the same. From searching online, I have found numbers of about 400 lbs for the 1mzfe, but just like here, no one mentioned what was included in that weight.