How or where would you find enough power to make time travel possible?

How could you generate enough power to create time travel? The universe, in my opinion, is much like the body, everything is interconnected. For instance if time travel were possible I could not send my brain back to the time of Caesar, my lungs back to the American Revolution, and my heart to the Battle of the Bulge, lungs to the French Revolution, and my kidneys to the gold rush while leaving my body here. My body parts would surely die not being connected to the rest of the body. Likewise you could not send the moon, or Saturn back in time while leaving the rest of the solar system here, either it all goes back or none of it could. Where would you come up with enough power to send the whole universe back in time? Where would the influence of any temporal field stop, the end of this solar system? If not, how far out? If you removed the solar system from the present universe how would the universe compensate for it being missing and unbalancing the universe?