After overheating my bj70 the engine was missing and ran rough on startup. At one point there was a clanking noise. I feared a cracked head and possibly a dropped pre-cup. I pulled the head and all the precups look okay but on once on cylinders 2 and 3 it has obviously swallowed something and I have evidence of metal smashing into the piston and cylinder head. this is damaged one of the valves and valve seats on one cylinder. Cylinder walls look okay. I have no clue what this engine could have swallowed. anyone have any ideas what the engine may have swallowed and why it would have happened on overheating?
This vehicle is new to me I only drove it about a hundred fifty miles before this happened. There is evidence of poor mechanic work prior. Maybe a pre-cup had dropped before or pieces of one and smashed into the head and piston and had been left there on a previous repair and those bits of metal broke Free and started rattling around on this overheat instance. It overheated due to previous J-B weld freeze plug repair blowing out and all of the water blowing out of the engine the temperature gauge never went up. She started losing power and shut off as soon as I pushed in the clutch.
This vehicle is new to me I only drove it about a hundred fifty miles before this happened. There is evidence of poor mechanic work prior. Maybe a pre-cup had dropped before or pieces of one and smashed into the head and piston and had been left there on a previous repair and those bits of metal broke Free and started rattling around on this overheat instance. It overheated due to previous J-B weld freeze plug repair blowing out and all of the water blowing out of the engine the temperature gauge never went up. She started losing power and shut off as soon as I pushed in the clutch.