Hawk81A-2

[JtD]

The V1710-33 as used on the H81's had no automatic boost regulation. This means it essentially was up to the pilot to control the boost, up to full throttle at nearly all altitudes. It was therefore extremely easy to totally overboost the engine when flying at low altitude and getting a lot of extra power out of it. This, of course, would cause mechanical failures of all sorts rather quickly.