Well I haven't pull it apart yet to confirm the carnage. But it's never good when the engine goes runaway and pukes about a quart of oil out of the intake. Leak down test produced a gargling sound out the oil fill tube.
A while ago, I posted a thread called "my oil pan just blew up". To those of you who speculated a connecting rod left the building, you were spot on. The connecting rod in the #8 cylinder completely disintegrated, leaving only shrapnel in the bottom end and trashing the motor. Have yet to pull the heads, not sure if they will be usable, the block is completely trashed and will take up more space in my shop until I can make a run to the scrap yard.
I was hoping to post pictures, but my computer running windows 7 will not recognize my iphone 5 as having any pictures to import. If anyone is tech savvy enough to help me work around this issue, I'd love to be able to post pictures. I still use a flip phone and inherited this now ancient iphone for the sole purpose of pictures and video for this engine tear down and p400 build that will hopefully begin in a few weeks.
I was able to get the devices to talk to each other. Here's some pics...
Shrapnel on oil pump pickup screen
Connecting rod blew through both sides of oil pan...
Iron blown off block where starter mounts
Where'd the rod go?!
I'll post more when I pull the heads and pistons. The crank seemed to be in otherwise fine shape. I was told by a long time 6.5 mechanic that this type of carnage can come from overspeeding the engine. I never took the motor to redline, and did run close to 3000 rpm when towing, given the 4.10 gears and all, but was under the impression that these motors were fine in that high 2k rpm range. I have a donor truck with 3.73 gears, so I'm considering a swap down the line. Need to get the truck back on the road with a new engine first though!
I do wonder if the pickup screen did save any metal from getting sucked up into the heads. Won't know if they're good/ cracked/ ruined until I pull them, but it was a nice tight motor for the few years I owned it. No coolant leaks (that I know of), always great oil pressure, always started in the cold. I installed brand new bosch injectors bought off ebay only 6k ago, is there any chance that this could have had anything to do with the rod blowing up? I thought injectors ruined a motor by leaking fuel past the rings and into the crankcase, which wouldn't happen with a new set; I'm pretty sure the old ones were the original ones! Just wondering if it's coincidence or just my bad luck.
That come out the gm casting that i pulled out to replace with the optimizer. And your right scrap isnt worth toilet paper with skid marks and no brake pads lol i have a block with one fine crank in one main web i was told i could grind it out and weld it with a nickel rod or nickel wire
I’ve seen it sieze engines. He is to lazy to pull the injector and retrieve the broken part- smh
when it jams between valve and valve seat bending the pushrod- valve hit by piston.
Seen it jam between piston and cylinder wall and instantly lockup.
iirc purposely faulty work causing damage could lead to a court marshal. Done in war time could be hit with serious charges. Have a failure from it in a fire fight a few weeks after that asshat worked on it- that would be great.
Thousands of military mechanics bust their tails to ensure everything works the best it can. I’ve several friends that would whoop on him for doing that kind of thing, even now- years later.
Not to often mil. folks brag on their being lazy and sub par performance.