I have a 98 with the 4.0L.
I just rebuilt most of the engine (except for the mains, they were fine).
New Pistons / rings / rod bearings
New water pump
New radiator.
New Hoses.
Heater core bypassed at the moment
0630 junkyard head pull, cleaned up, cleaned up the valves using a basic lap method. After 500 miles, compression is fine and the engine runs great.
New fel-pro head gasket, and thoroughly cleaned the mating surfaces and checked for warp. All was ok.
Problem is, I cannot for the life of me find my coolant leak. Its a pretty big one, drips off the front diff.
I've sealed, and re-sealed the #11 head bolt using permatex high temp thread sealant.
I'm going to pull the t-stat housing and reapply RTV because i did break the seal once, and put it back, but it was during installation. Its the only thing I can think of. That is 'above the block' where a leak could occur.
I've noticed that from the front of the engine, coolant runs down the joint between the head and the block, from the front to the back of the engine on the distributor side. It also seems to dribble downwards from right under the exhaust manifold, straight down the side of the block.
I wouldn't think the #11 head bolt could leak water all the way around to the distributor side of the engine... I'm just running out of ideas, and antifreeze.
I just rebuilt most of the engine (except for the mains, they were fine).
New Pistons / rings / rod bearings
New water pump
New radiator.
New Hoses.
Heater core bypassed at the moment
0630 junkyard head pull, cleaned up, cleaned up the valves using a basic lap method. After 500 miles, compression is fine and the engine runs great.
New fel-pro head gasket, and thoroughly cleaned the mating surfaces and checked for warp. All was ok.
Problem is, I cannot for the life of me find my coolant leak. Its a pretty big one, drips off the front diff.
I've sealed, and re-sealed the #11 head bolt using permatex high temp thread sealant.
I'm going to pull the t-stat housing and reapply RTV because i did break the seal once, and put it back, but it was during installation. Its the only thing I can think of. That is 'above the block' where a leak could occur.
I've noticed that from the front of the engine, coolant runs down the joint between the head and the block, from the front to the back of the engine on the distributor side. It also seems to dribble downwards from right under the exhaust manifold, straight down the side of the block.
I wouldn't think the #11 head bolt could leak water all the way around to the distributor side of the engine... I'm just running out of ideas, and antifreeze.