Sorry, your site is confusing me.
Here is a better-posed question and the one I THOUGHT you had read:My 2003 Dodge Ram 2500
Van 5.2liter overheated soon after I had done a long-leaking plenum gasket after a previous more minor overheating when a freeze plug blew.
I ran the van without coolant for the one year it took me to realize the freeze plugs were weeping coolant slowly and from unexpected places.
So another freeze plug rapidly blows and this time the overheating is more instant and severe.
Once again, there is oil in the air plenum but this time there is also water in the oil. I figured I had blown a head gasket, but instead, find a cavity in the #6 piston lower perimeter, about 1/2” wide, running a tapered overall length of 1” along the outside piston circumference, down to at least the top-most ring, as I can see the seemingly intact ring. Some tramp aluminum film seems fused to the cylinder wall in the piston failure area, but the pistons seem to still freely rotate, as I cleaned the cylinder walls and rotated the engine to inspect all the cylinder bores. Although the van engine was still in missing-but-running-condition when disassembled, I regret I never did a compression check.
The van was bought new by me in 2003 and has 130,000 around-town miles.
The head gaskets and plenum gaskets all seemed intact, upon disassembly.
I have removed the plenum stamped sheet metal bottom and see no evidence of gasket failure or plenum casting failure. I have heard this is hard to diagnose. Should I “scope” the unseen passages?
Would just a hole in one piston cause oil to be in the water in the crankcase oil and also watery oil in the air plenum? So far, that is all we can find wrong.
Seems there must be a casting crack somewhere?
Seems not too tough to seal the passages and do some vacuum pumping or compressing to check for casting failure. Any suggestions here?
I seek to know the cause of why only the number six piston looks badly. It also has some aluminum flakes bonded to the top.
I have cleaned the heads, rotated the crankshaft and inspected cylinder walls and can find no cracks.
I wish to keep this van, as the interior is built out for my business.
Can just one piston be removed without removing the engine?
Could a hole in a piston result from the rapid loss of coolant thru a fully-blown freeze plug at highway speed?
Are the crankshaft and camshaft likely damaged from this same overheating?
Can the oil pan and a piston be removed with the engine still in the vehicle?
What is the time to remove an engine with the heads already off from this vehicle?
Does the engine remove from the front, rear or below?
The van is currently sitting normally in the concrete driveway.
Maybe it is time to buy or rent an engine stand?
I would appreciate any advice on all of this.