TomSeller
Super Member
A while back while backing the MF245 up to an implement a loud "whap, whap, whap, crunch, crunch, crunch" came from the engine. The engine was at idle at the time and oil was full when drained at tear down. Oil pressure was near pegged as normal for this engine. The engine had been recently rebuilt "professionally" according to the previous owner with probably 30 hours on it to failure. It's not always good to buy anything "just rebuilt" but if the price was right and it was a nice tractor......
The #1 cylinder liner failed from what is expected just below the lip on the liner. The lip stayed on top of the piston along with apparently some liner fragments that must have been shoved up there by the piston? The "whap, whap, whap" sound was the rod smashing the liner into bits and the "crunch, crunch, crunch" was the #1 piston pulverizing the liner lip and liner fragments. The impact to the head popped the gasket as there were tons of white smoke (coolant ingestion) before the engine was shut down. The #2 and 3 liners pushed out by hand, so guess is the wrong liners were used or they were made wrong. The #2 liner is actually fractured off just below the lip and looks like it was going to be pulled into the crankcase next. #3 liner looks normal. I have not tried to re-insert the #3 piston into the liner yet to see if the fit was too tight ( liner too small). The #1 piston has damage at the top and on the side bits of what must be liner are imbedded into the piston.
Turned this over to the shop for repair (hopefully) since this requires more time than I have right now.
Anyone wanting to take bets on if this block and head will survive to run again?
The #1 cylinder liner failed from what is expected just below the lip on the liner. The lip stayed on top of the piston along with apparently some liner fragments that must have been shoved up there by the piston? The "whap, whap, whap" sound was the rod smashing the liner into bits and the "crunch, crunch, crunch" was the #1 piston pulverizing the liner lip and liner fragments. The impact to the head popped the gasket as there were tons of white smoke (coolant ingestion) before the engine was shut down. The #2 and 3 liners pushed out by hand, so guess is the wrong liners were used or they were made wrong. The #2 liner is actually fractured off just below the lip and looks like it was going to be pulled into the crankcase next. #3 liner looks normal. I have not tried to re-insert the #3 piston into the liner yet to see if the fit was too tight ( liner too small). The #1 piston has damage at the top and on the side bits of what must be liner are imbedded into the piston.
Turned this over to the shop for repair (hopefully) since this requires more time than I have right now.
Anyone wanting to take bets on if this block and head will survive to run again?