The internet is an amazing thing. It allows PUBLIC information to be PUBLIC.
Here is the NTSB Probable Cause Synposis on the plane crash.
" The National Transportation Safety Board determines the probable cause(s) of this accident to be:
The failure of both pilots to abort the takeoff when a suitable climb rate could not be attained. Contributing to the accident was the reduction of available power due to the camshaft lobe and lifter corrosion/wear, the high density altitude, and the CFI’s inadequate supervision."
Here is the NTSB Factual Report.
Here is the NTSB Brief of Accident.