After spending $4,000 on the engine and another $4,000 on other parts, it still has the same performance it did when he started. But having a gas turbine in your tractor that runs at 112 dB? Well, for the garage tinkerer, that is priceless.
Mr. McDonald will not be cutting grass with his baby but will take it to the Tractor Museum in Vista, CA and other "outdoor" shows. Listen for that turbine screaming.
Reader Project of the Month: The Jet-Powered Lawn Tractor | Popular Science.