Board Thread:General Discussion/@comment-69.19.14.19-20140517121004/@comment-24942596-20140518005708

There isn't much info, but I'll try: They output about 4MJ/tick a tick = 1/10th of a second. Anyway, they turn on when you start them, my way of getting lots of lava is to make a nether lava pumping station. You should start at (my guess) about 4 - 6 engines, providing you have that much lava.