Engine toast?

[Ram06_1500]

Engine was rebuilt with forged and boost application. Had exhaust valve seats pressed in. Had about 2k miles on it. While driving with my kids to an appointment i noticed the check gauge come on. Saw the coolant temp all the way to high. I did have problems with my gauge cluster as rpm needle sometime stick. I also didn’t have any location to pull over(busy intersection) did not see any smoke so i thought gauge was acting up. Maybe 15 min into drive engine just stopped. I then see the steam and coolant drip. Turns out radiator was leaking at bottom. I thought it could be seized. Crank still spins but it seems as no compression. I’m hoping some things are salvageable. I’d hate to junk it. I already put a lot of money into it and cannot afford to rebuild again. I did have ARP head studs and cosmetic head gaskets. On crank it does sound as though timing chain may have snapped? I do have access to borescope. Any steps I can start to see if this engine is salvage aside from taking oil pan off? I realize its my dumb mistake. Any help would be appreciated.

 

[Ram06_1500]

Piston/bore

 

[jws123]

If you ran it so hot that the needle was pegged all the way and kept going that things toast. The heads will be warped head gaskets blown and possibly cracked cylinders I have seen hemis do that when they are overheated badly. Unfortunately modern engines can not take bad overheats due to alluminum heads ect your going to have to tear engine down and inspect you are probably better off throwing a used hemi in if trucks in good shape and want to keep it. Also I see you are in jersey aswell what part? I do have alot of hemi parts few engine blocks laying around sometimes buy blown up trucks if you end up getting rid of it.

 

[Dbrewton]

My '68 Lemans snapped a timing chain after locking up from overheating. I put a new chain on and drove it 10+ more years before doing a rebuild. But thats all cast iron. I'm not sure about the aluminum, although my '99 Eldorado overheated and never had a problem, maybe because the computer shut it down. Just throwing you a glimmer of hope.- good luck.

 

[Ram06_1500]

Thanks for the replies. Chain seems to be intact. I did a dry compression test only 1 cylinder(been busy) and got 60psi. If wet test pressure increases do you think I can get away with swapping warped or cracked cylinder heads? I know a full tear down would be optimal but I’m very limited with time. Obviously if wet compression test doesn’t increase rings or cracked cylinder walls possible. When it shut down I couldt even turn it over with key. I disconnected battery thinking it was pcm issue. Had similar problems in past because of tuning issue. Also thought it seized. It does turn over and, I’m just crossing fingers. Im by Toms River NJ

 

[jws123]

Thanks for the replies. Chain seems to be intact. I did a dry compression test only 1 cylinder(been busy) and got 60psi. If wet test pressure increases do you think I can get away with swapping warped or cracked cylinder heads? I know a full tear down would be optimal but I’m very limited with time. Obviously if wet compression test doesn’t increase rings or cracked cylinder walls possible. When it shut down I couldt even turn it over with key. I disconnected battery thinking it was pcm issue. Had similar problems in past because of tuning issue. Also thought it seized. It does turn over and, I’m just crossing fingers. Im by Toms River NJ

Your going to need to rip the heads off and look at cylinders for cracks/scoring it sounds like you overheated it prty bad. I recently worked on a durango with a 5.7 people ran it til it shut off like you I put new heads on it chased my tail for 2 weeks couldnt figure out why it would keep boiling over found a crack in 2 cylinders they only really crack the cylinders when cooked real bad.

 

[Ram06_1500]

Looks like I melted the #1 and #3 intake runners. All others seem fine. Almost close to tear down. As said im limited with time. But valves stuck with melted plastic. I saw passeneger rear knock sensor hanging. Must of overheated being so close to long tubes. Out of curiosity are head studs that can be reused have to be in its corresponding location or can they be installed anywhere if I only need cylinder heads?

 

[jws123]

If you melted your intake that motor is done stick a fork in it... your going to waste time and money if you try to just slap heads on it id bet money on a damaged block. Also you cant re use head bolts they are torque to yield.

 

[Dodge 1500 4X4]

Wow, Hope you learned your lession, with any signs of trouble shut it down, to melt the plastic runners on the intake you must have been well over 1,000f to melt that and get sucked into the intake valves. RIP Great Engine!!!

P/S Mechanical temp, and oil pressure gauges should be in your future to protect your investment.

 

[Ram06_1500]

Agreed. I can only hope. I might have to just keep on side a do tear down. I don’t have torque to yield bolts. Had everything ARP studs, now prob junk

 

[Ram06_1500]

Driver side(oil from pb blaster and oil from wet compression testing

 

[Ram06_1500]

Passenger side