Board Thread:Questions and Answers/@comment-5963087-20130115150834/@comment-5319459-20130115152319

What are you trying to power/get it connected to?

The Engines can only be reorientated when there is a block/pipe for them to connect to. If there is such a block/pipe you can use ether the BuildCraft Wrench or the OmniWrench to reorientated it.