Offboost
Well-Known Member
Lets take look at why engines may fail or need to be replaced here are some reason"s I can think of feel free to add. Again until someone takes several of these apart after failure besides Ford we wont know the reason.
1. Most common seems to be excess oil consumption. (possible ring or cylinder wall issue or normal for this type of engine) Not sure this constitutes a actual failure of the engine.
2. Assembly error, broken rings during install (not likely) bolts not properly torqued should not happen but you never know.
3. Debri left in block oil passages after machine process and it gets into bearings or oil pump and engine fails. This debri could possibly damage the oil pump then the bearings fail soon after. What I find interesting is it seems that most that have blown have broken a rod. I would think a engine without oil pressure would seize and lockup before it broke a rod. Maybe the pistons are breaking.
4. Improper bearing tolerance or improper material used cannot take the high RPMs.
5. Running the engine low on oil and maybe at RPMs the oil in the engine does not drain back quick enough to prevent oil starvation.
6. Possible poor seal between oil pump pickup tube and pump causing cavitation.
7.Improperly engineered or material choice or bean counters choices.
8. Operator error high rpms cold engine, driving with more than a quart low.
9. Aftermarket tunes that cause detonation etc.
10. Failure of internal parts from metal fatigue.
1. Most common seems to be excess oil consumption. (possible ring or cylinder wall issue or normal for this type of engine) Not sure this constitutes a actual failure of the engine.
2. Assembly error, broken rings during install (not likely) bolts not properly torqued should not happen but you never know.
3. Debri left in block oil passages after machine process and it gets into bearings or oil pump and engine fails. This debri could possibly damage the oil pump then the bearings fail soon after. What I find interesting is it seems that most that have blown have broken a rod. I would think a engine without oil pressure would seize and lockup before it broke a rod. Maybe the pistons are breaking.
4. Improper bearing tolerance or improper material used cannot take the high RPMs.
5. Running the engine low on oil and maybe at RPMs the oil in the engine does not drain back quick enough to prevent oil starvation.
6. Possible poor seal between oil pump pickup tube and pump causing cavitation.
7.Improperly engineered or material choice or bean counters choices.
8. Operator error high rpms cold engine, driving with more than a quart low.
9. Aftermarket tunes that cause detonation etc.
10. Failure of internal parts from metal fatigue.
