FrozenMerc
Full Access Member
So, long story short, I installed a CCD turbo kit on my '85 F350 last winter, spent most of the spring just driving the truck, and getting it tuned in how I was hoping. Everything was working well until August when it started puffing white smoke when I started it after a hot restart after unloading some stuff at work. I parked it right away, and came out to go home after work and it would not restart. It was acting like it hydro-locked. In fact, it kicked back so hard, it snapped the nose of the starter off. I ended up towing it home, and quickly discovered that the oil pan was full of coolant.
At that point, I figured the best thing to do was to pull the motor, tear it down and hope that there was nothing major wrong. Pulling the top end off revealed that the valley pan gasket had let go by the rear coolant passage (under the turbo) and the coolant was free to run down into the oil pan. I breathed a sigh of relief, as that was easy to deal with. When I put the head studs in two summers ago, 2 of the studs on the passenger side were weak and wouldn't pull torque. So I figured, I would completely disassemble it, fix the head studs, and hopefully get away with just a re-ring and gasket job. Turned out the rod bearings were toast from running with coolant rather than oil, but the crank was in excellent shape, so one less thing to worry about.
Motor on the stand.
Cleaned up and ready for work.
After getting the block all cleaned up, I finished the decks, honed the cylinders, and flipped it over to run taps through all the bottom side bolts holes. That was when I discovered the cracks in main web #4. I don't think this is repairable. Anyone have a good 6.9 block near SW Missouri for sale?
The offending crack.
Guess I am off to the junkyard to see what I can find...
At that point, I figured the best thing to do was to pull the motor, tear it down and hope that there was nothing major wrong. Pulling the top end off revealed that the valley pan gasket had let go by the rear coolant passage (under the turbo) and the coolant was free to run down into the oil pan. I breathed a sigh of relief, as that was easy to deal with. When I put the head studs in two summers ago, 2 of the studs on the passenger side were weak and wouldn't pull torque. So I figured, I would completely disassemble it, fix the head studs, and hopefully get away with just a re-ring and gasket job. Turned out the rod bearings were toast from running with coolant rather than oil, but the crank was in excellent shape, so one less thing to worry about.
You must be registered for see images attach
Motor on the stand.
You must be registered for see images attach
Cleaned up and ready for work.
You must be registered for see images attach
After getting the block all cleaned up, I finished the decks, honed the cylinders, and flipped it over to run taps through all the bottom side bolts holes. That was when I discovered the cracks in main web #4. I don't think this is repairable. Anyone have a good 6.9 block near SW Missouri for sale?
The offending crack.
You must be registered for see images attach
You must be registered for see images attach
Guess I am off to the junkyard to see what I can find...