Originally Posted by Sjoholm

The 182 at the school I instruct at just got back after a gear up landing repair. The engine was completely redone but now it feels like it lacks power. The takeoff role is almost twice as long as published in the poh. It's a Lycoming o-540 making good rpm and normal manifold pressure. Maintainence says It's fine. Any ideas what could be causing poor performance on a rebuilt engine?