Berg
07-12-2004, 08:40 PM
Well sorry it's not cruiser related but kind of off road related...
My brother has a 1939 Ford 9N 4 cylinder tractor that recently.. he thought he siezed the engine.
Here is what happened..
Plowing a small field and he began to hear a metal to metal noise in the engine. Looked at the oil pressure gauge and NO oil pressure. :eek: Stopped the tractor and started to check the usual stuff. Oil was up, coolant, fuel -air all OK. thinking he lost oil pressure he pulled the oil line off the gauge and started it up..to his surprise.. oil shooting out hose with pressure. Put the hose back on the gauge ( which did not work) and assumes gauge is bad. :( keeps on plowing and using it for the last years season. This year starts again and plows away and can still hear unusual metal to metal sound. ( not knocking like a rod btw)Assumed it was a bearing and decides to put the hammer down. Engine ran then siezed up.( or so he thinks) could not turn it with manual crank. Decided a rebuild was on the way anyway. When the tractor cooled the engine would turn over fine though.
pulled the engine and flipped her upside down and pulled the main caps.
There rear was slighty pitted in the beaing and the crank was very ever so slightly scored. The other two mains were fine. Piston walls look fine and no major problems there. What would cause it to sieze ?? All I could think of was a main bearing, which IMO did not cause the sieze. Rod bearings and fine and turn easily ..pistons move freely as well. Just wanted to throw this out to the engine guys and see what you all think. The suspect rear main bearing does not show enough abuse to stop that little 4 banger imo.
Not wanting to get rebuild fever ...what's next
thanks again.. sorry it's off topic
berg
My brother has a 1939 Ford 9N 4 cylinder tractor that recently.. he thought he siezed the engine.
Here is what happened..
Plowing a small field and he began to hear a metal to metal noise in the engine. Looked at the oil pressure gauge and NO oil pressure. :eek: Stopped the tractor and started to check the usual stuff. Oil was up, coolant, fuel -air all OK. thinking he lost oil pressure he pulled the oil line off the gauge and started it up..to his surprise.. oil shooting out hose with pressure. Put the hose back on the gauge ( which did not work) and assumes gauge is bad. :( keeps on plowing and using it for the last years season. This year starts again and plows away and can still hear unusual metal to metal sound. ( not knocking like a rod btw)Assumed it was a bearing and decides to put the hammer down. Engine ran then siezed up.( or so he thinks) could not turn it with manual crank. Decided a rebuild was on the way anyway. When the tractor cooled the engine would turn over fine though.
pulled the engine and flipped her upside down and pulled the main caps.
There rear was slighty pitted in the beaing and the crank was very ever so slightly scored. The other two mains were fine. Piston walls look fine and no major problems there. What would cause it to sieze ?? All I could think of was a main bearing, which IMO did not cause the sieze. Rod bearings and fine and turn easily ..pistons move freely as well. Just wanted to throw this out to the engine guys and see what you all think. The suspect rear main bearing does not show enough abuse to stop that little 4 banger imo.
Not wanting to get rebuild fever ...what's next
thanks again.. sorry it's off topic
berg