Originally Posted by
dan_vector
They are not all pre-run depends if it was ordered as such. The engines that are pre-run come with a test card in the box and also has a pre-run label on the outside of the box.
I think most of the Nova based engines that he has left are "run in" versions as all the "new" engines have been sold. For some reason there is a stigma attached to a "run in" engine being worn out already. Seem that most people have their own break in process and don't want to deviate from it. A lot of guys are a bit squeamish of a full throttle break in. I'm not one of them...