The Ford Barn

elmangle · 08-14-2019, 12:28 PM

Little help, folks! My '52 8rt engine runs 10-15 degrees warmer on the driver's side, and about 200 degrees cruising on a moderately warm day. There is also enough moisture in the exhaust to fog a mirror, even after running the engine extensively. I removed the water pump belt and upper hoses and thermostat housings and ran the engine to check for bubbles in the coolant, which began to appear around 170 degrees and became quite frequent at 190 and above. A previous check of the radiator with a "sniffer" did not detect exhaust gasses. Revving the engine produced no surging. I did a dye penetrant test on both the head and block and saw no cracks. I sent the head off for pressure testing and it was fine, although very slightly less than completely flat, so was lightly milled. So my questions for you smarter folks are these: What next? Now where do I look?

08-14-2019, 12:28 PM	#1
elmangle Member Join Date: Aug 2016 Posts: 62	Elusive Block Crack? Little help, folks! My '52 8rt engine runs 10-15 degrees warmer on the driver's side, and about 200 degrees cruising on a moderately warm day. There is also enough moisture in the exhaust to fog a mirror, even after running the engine extensively. I removed the water pump belt and upper hoses and thermostat housings and ran the engine to check for bubbles in the coolant, which began to appear around 170 degrees and became quite frequent at 190 and above. A previous check of the radiator with a "sniffer" did not detect exhaust gasses. Revving the engine produced no surging. I did a dye penetrant test on both the head and block and saw no cracks. I sent the head off for pressure testing and it was fine, although very slightly less than completely flat, so was lightly milled. So my questions for you smarter folks are these: What next? Now where do I look?