Running a new engine on a test stand or, especially, a dyno, makes so much sense we don’t know why everyone doesn’t do it. OK, it costs $1,000 or more for a 3-hour break-in, but you end up with a proven, leak-free engine when it comes time for the first flight in your new airplane. Sign us up.
Many shops have a simple test stand where they can run the engine, but the ideal is a dyno where the engine is run under load (as if on the airplane) and engine power recorded.
![](https://s28490.pcdn.co/wp-content/uploads/2024/01/dynamometer-test-EBG2024-6.jpg.optimal.jpg)
Besides validating the new engine is ready for flight—before your rump is in the seat—a dyno break-in gets around the problem of what’s good for a new engine and what’s good for the new airframe being at cross purposes. The engine absolutely needs to run hard against a load for an extended time to break in the rings while the airframe should be taken in the air in short, low-power flights. So break in the engine in safe, controlled conditions on a dyno and enjoy that short first flight that much more.
Back to the 2024 Engine Buyer’s Guide Index
Where can I find a company that will break in an engine with the Dymo?