[theducksguts]

I had a thread way back when for how my coolant was mysteriously disappearing

http://www.jeepforum.com/forum/f11/4-0l-losing-coolant-878140/

I had a cylinder leak-down test performed which it was clear that the head was bad. Here is were it cracked


I pulled the head and set is aside. There was coolant in the #3 and 4 cylinders. I cleaned off everything and cleared the old gasket, which was intact and not blown. I checked the block for any visible weakness or cracks but could not see any. I am hoping for the best. Cylinder test failed at the head so we never made it down to the block.



I installed the new head over a new Fel-Pro head gasket. Making sure to torque the bolts to 110 and #11 at 100. Thanks to Kettle's and CJ7-Tim who helped me out with the 00 Torque sequence

Placing the exhaust and intake manifold was difficult because the reman-head did not have the dowels to line it up. I bolted it up loose so I could adjust it as needed.


I put in a new Thermostat housing and bolted the rest in.


I added some coolant and oil and fired it up. It ran rough for about 5 seconds before the computer adjusted the timing. It also smoke a bit because I got some grit/grim down into the intakes when connecting them to the head. That burnt off and it runs well.

I still have the low oil pressure on the gauge but no milkshake in the oil so that is good. I am watching it closely. I will change the oil in a couple days and hook up a manual oil pressure gauge to see if I need a new sending unit which is likely.

I'm not calling it finished yet because I don't want to jinx it. Thanks to everyone who helped me with this repair.

[justanotherjpr]

I would change the oil right away. Who knows what kind of gunk got in there during your fix.

Edit: And congrats!

[theducksguts]

Originally Posted by justanotherjpr

I would change the oil right away. Who knows what kind of gunk got in there during your fix.

Edit: And congrats!

I did, last night. I ran some oil system cleaner with the new oil. I will change it in a couple days just to be sure. I want that thing clean. I might also drop the pan.

[justanotherjpr]

How hard were the bolts on the bottom of the intake/exhaust manifold for you to get off?

[theducksguts]

Originally Posted by justanotherjpr

How hard were the bolts on the bottom of the intake/exhaust manifold for you to get off?

They actually weren't too bad. I sprayed them down with some PB blaster and they came right out. They should only be 20 or so ft lbs of torque.

I got them from the underside. Had to move the front drive shaft to get at them. If you have a head lamp or stationary light it helps a lot.