A few things about this teardown. Several viewers mentioned running upside down, I do think that's a valid theory! I also think someone was in there trying to get the crank to turn so they could remove the torque converter bolts, however it was clear their efforts were.... futile. The missing main cap bolts also make me think this. The stubborn/tight/rounded off main side bolts for the main caps were too tight to use an extractor, and likely would've broken the head off the bolt had I tried to weld to them. We aren't supposed to use open flames in the shop per insurance rules, so I try to keep that type of work off camera (It never happens, promise!) Overall, this has to be the wildest failure I've seen to date considering the relatively unaffected cylinder heads. Thanks for the comments!

I owned a Marauder for a few years, had to sell it to take care of my mother in law who was battling cancer. Sure miss them both.

The fact that both of the cylinder heads survived that insane grenading action enough to be serviceable is beyond amazing.

The 32 valve double overhead cam 4.6 Intech V8 is probably one of the best engines Ford ever produced. I had worn in my 98 continental and it was trouble free. It is a great engine.

Never ceases to amaze me how big the modular engines are versus their cubic inch capacity with the huge heads and cam chains.

I don't know how many times I've imagined taking a hammer to a frustrating bolt. That must've felt good! Lol. Another great teardown choice!

Expected a teardown, watched a beatdown! That poor engine thought the worst that would happen was its catastrophic failure. What it couldnt have foreseen was its corpse being defiled for "forensic investigation"! Thank you Sir for sharing this adventure with us!

Those 4.6 4V units are strong, powerful and sweet sounding. This poor thing must have been so neglected.

Whats more likely is that the engine seized. Someone pulled the pan off and torched and knocked the pistons up in order to free the crank so they could spin the engine inorder to get the torque converter bolts out. I used to do this a lot. I worked for a company and did all the replacements for years and atleast 250 engines I have replaced, I had to go through those lengths in order to get the crank to spin. In a shop, you're not paid to pull it all apart so a lot of guys will rip through the engine as quickly as possible. It's considered junk to them anyways.

That motor should read “Cleetus was here”.

Best teardown ever. I can't imagine the noise this made and for how long to cause that much carnage. Amazing.

27 year master certified tech, i agree with other comments stating missing bearing cap bolts and molten metal along with extreme discoloration on rod journal seem to indicate acetalene torch was used to cut rods free of crank. the oil filter being empty, as well as no oil in the housing suggests that oil starvation at high rpm locked the engine up by galding of the rod bearings. Smashing the block with a sledgehammer was so satisfying to watch!!!! I love teardowns and inspections-failure analysis because it is like a who done it mystery story. the debris, and scarring to the oil pump housing may be an indication of extreme neglect of maintenance and i would cut the filter open to see if it had ruptured the paper element. loved the video!!!

Love how he speeds up the boring bits and the remaining video is all the interesting bits

I can honestly say I don't think I've ever seen someone use a hammer on a teardown like that. Gotta say I'm jealous lmao

This has been my favorite teardown so far, all pistons at TDC, zero rods connected and smashing the absolute hell out of a block in order to solve seized main bolts, broken hammers is also a plus

I had a 1997 Lincoln Mark VIII with the 4.6L SOHC engine and it was a fantastic drivetrain and vehicle all around! These motors are capable of going for a very long time and are actually quite efficient for what they are! Thanks for another great tear down!

looks like a very well built engine as has been proven many times in use.

Looks like the inside of a Chevy V6 my friends and I blew up when we shot unregulated nitrous into the filter box while the engine was banging off the limiter. I believe that for approximately 0.03 seconds that 4.3 made north of 5000 horses and then promptly grenaded. The blown out rod big ends especially looked like the ones in that engine. Partially melted and fractured metal.

You know it's a good teardown when the sawzall comes out. I suspect someone in a pick-apart lot torched the bottom end of the engine trying to get it to spin around enough they could unbolt the torque converter.

11 months later and I am still totally entertained by this teardown. I can't even wrap my head around how this could have happened. Just weird. Aliens?

That's incredible. Those engines are way overbuilt too so I'm impressed.

Oil starvation caused the rod bearings to seize on the crank journals, at high RPM, and the torque combined with the drag on the rod bearings caused the rods to twist right off. Oil failure plus high RPM. That's what it seems like happened to me. The main cap cross bolts were jammed due to displacement of the caps. Bet the bolts are bent. Check them, they will be. As for why there's no visible lubrication problem in the cams, I'd venture to guess that it had an oil passage obstruction that only affected the bottom end, where it matters the most especially at the redline.

Taking "teardown" to a new level in this one

The 4.6L engine that cab drivers could not kill!!

This is the very reason the 2 valve PI 4.6 is so reliable it has none of the problems of these complicated versions that Ford worked so hard and spent so much to make it a timebomb!

My guess would be: Foot on the floor, hit something and tore the bottom of the oil pan out completely (hence no oil pan on the core). Bottom end went totally dry at seriously high revs and self-destructed so quickly that the top end hadn't had time to run out of oil yet.

The last part of the video reminds me of breaking apart my old cast iron bath tub with a 12lb sledge hammer. Stuff goes flying. Except I was on a rotten floor and the broken bathtub and I ended up in the crawlspace

When I was trying to get the heads off of my old 4.6L engine a few years ago, that dipstick setup drove me insane! They never come out easy.

That is some serious heat to be able to create such extreme heat and wear on those journals, bearings, and rods. Such a unique case. Good job brohsk.

Some of that bottom end was taken apart in order to crank the engine to get the torque converter bolts out due to it being locked. Looks like a torch was used as well.

Talk about internal combustion, BOOOM!!! Insane.crazy vid man, great job.

I don’t know why but I love watching you struggle with dip stick tubes 😝

The carnage is a testament to whoever engineered that engine. It kept running despite the absolutely horrific conditions it went through! Amazing!

Looks like a textbook case of Quick Lube syndrome, (forgot to refill the oil),followed by somebody's "mechanic" leaving a hammer in the oil pan while replacing the pan gasket, followed by a cold start with the throttle stuck wide open, while tumbling down a granite cliff face. I see this all the time...🤔

I found your channel a few days ago and I am pleased and impressed. #1 takeaway: take care of your engine! That oil that they put in at the factory will last the life of the engine, just wait. #2: I would really like you to publish a glossary of the terms you use, for instance bearing rich oil, cylinder gravel, piston mc nuggets, etc. Keep it up and you will have a million subscribers.

Really enjoy watching these.

Years ago my wife had an 80-something Mazda 626 which killed all 4 of its cylinder walls. I maintained it carefully, always checked the oil, and it had less than 100K miles. For a weekend trip we were driving a few hours from home on the highway. Suddenly it lurched and died, and put out this ugly oily black smoke under the dash. She steered it to the side of the highway and turned it off. I thought that this would not be good. I opened the hood and nothing looked wrong, yet the radiator seemed really really hot. I figured it can't hurt to add some coolant. So I hiked to a gas station and returned with lots of water. When I put the water into the radiator, it sizzled. Again, not good, I thought. I was going to call for a tow. But I thought, what the hell, why not see if it starts? So I did and it started right up. I imagined that the oily black smoke never really happened and we drove it home. It seemed to drive fine, but the temperature gauge was all over the place, back and forth from too cool to too hot. Otherwise it seemed to run fine, and my wife drove it to and from work for a few more days as we waited for our appointment with the Mazda tech. Turned out that it was so bad that all the techs were very entertained. They said it was the most messed up they ever saw. All cylinder walls were horribly scored. They found the likely initial source of the mess: a crack had forced a passageway between the oil and the coolant. They were amazed that we were able to drive it for like 100 miles after it cracked. The block was not rebuildable. We put in another engine and kept it for many more years.

Had me a marauder once. It was a good ride. Then I put a 3:73 in the rear end. Then it was a great ride.

Brilliant vid sir...keep them coming

Thank you for doing a video like this. I had a great time watching. Thank you.

Still one of the best motors of the Ford family in the past 50yrs. Swapped an early Intek out of a Mark8 into my 98 Mustang back in the day. On a small dry shot that thing would take almost anything on the street back in the early 2K's. And it took the abuse time an time again. Had some nasty timing chain rattle on cold start but that was about it. Those blocks were made out of the same aluminum an at same Teksid factory out of Italy as the Ferraris an Lamborghinis. At least up until the late 90's early 2Ks anyway. The Ford Modular Motor family was awesome for the backyard weekend warriors to build and tinker with, before the later gen engines began to get more an more complex.

Damn man you beat your WAP till you broke it, takes skill and persistence for that to happen

Is what a great tear down video is air down video don't know much about that 4.6 block engine combination but I learned a lot thanks for your time.

I have a 2004 Marauder, rebuilt engine 60k ago, lovely to see the innards of this amazing motor! Used to rebuild motors for fun back in the days. Thanks for this vid, very fun to watch. Loved the "convincing" it took!

I like the way this dude thinks. When all else fails, it's Hammertime. I figure the stress relief is worth more to me than whatever material item I just obliterated.

I’ve seen this in a John Deere tractor engine. They some how knocked a hole in the oil pan. The engine was at full rpm’s and under full load. By the time they see the oil pressure gauge it’s to late. The rods remove themselves from the crank.

My dad has a 1999 Mercury Maruator Police Edition..he bought from a police auction in Tempe,Az.back in 2007..it now has 200,000 miles on it & doesn't burn oil or have leaks ..the only thing he has R&R is front struts & rear shocks..he has Motorkoted the engine..power steering..& runs injector cleaners religiously..👍 are

Wow- the amount of damage is...... incredible

I've seen this kind of Carnage before it was caused by the vehicle being upside down at high RPM

The only thing I can possibly think of is, they were driving at high speed, hit something in the road which put a vent hole in the pan, and just kept going until it came apart. Guess there was just enough oil left in the cam journals to save the heads. It honestly makes no sense though how the heads survived but there was that much damage down below.

Best episode ever! Insane destruction. I can't fathom how this motor lasted long enough to do that kind of damage. I once killed a Mazda 3.0 V6 in my horrible Ford Escape, where it finally threw a rod and broke the block and pan, but it was nowhere near this level of burnt and melted. Clearly a pro at work!

Great video ! Love your last resort all purpose persuader tool !

I had a Marauder for 10 years. It's cool to see the innards of the motor it had.

This is hands down the absolute BEST teardown so far. I laughed a lot.

WOW!!! I hope you kept the crank...one helluva souvenir...and proof if anyone ever asked about the biggest failure ever. As for failure My guess is it was intensional...oil filter basicly dry and empty it appeaered and the wear on the oil pump gears. My guess is someone drained the oil probably dumped some on the topside and once it lit off kept it matted. THAT would be a video to see too...Im glad those heads survived. I've never seen that much purple and black on a crank before...wow...just wow!! Fantastic video!!

What a mess. My best first guess would be just like you said, it was revved super high and those rods “became adjustable” one after another. And of course the pistons have no place to go but slam into the heads. Pretty darn amazing.

"Cooperative pistons!" They all want to be together. I really like the precision block adjustment with the sledge. Those bolts definitely deserved it. That all is shocking.

I'm just impressed at that level of damage, just really impressed. That's professional levels of chaos inside the bottom end. Just... Wow.

Always fighting the dip stick tube. My top two enemies as an auto tech are dip stick tubes and sway-bar links.😂 these are the two things that are almost impossible to remove and reuse ♻️

Defiantly one of the best so far. when you have to beat it to death with a shop hammer to get it apart, massive carnage. keep them coming :-)

I, personally, like ALL of the engine teardowns. It's also why I subscribed and watch most all of your videos. Your personality and knowledge about engines keep me around.

8 rods out of 8...that's impressive carnage!

Eric, lol! That was amazing! A quick story- my step mother bought a 2008 Mirader after my dad passed. We all thought she was crazy. Traded in her minivan! Anyway it was totally black with all dark windows. Polished aluminum wheels. Everyone thought she was dealing drugs, at 75. Anyway that car was fast and smooth. Took it out without her a couple of times. Unbelievable the damage that engine had!!! PS: those dang dip sticks!!!

Now that is what I call Carnage!!! WOW.

That the heads weren't trashed is amazing.

Super look forward to your videos every week, keep up the great work; and as everyone has already said: The more carnage the better!!!

I like these tear downs. That was carnage. Subbed from Dawsonville, GA.

“Malice in the combustion palace” Pure gold.

The wild part to me is the relatively light damage to the main journals yet the rod journals are beyond gone. Just wow.

Best tear down ever seen in your channel tho!! That was an incomprehensible damage to that engine. Regards from Spain!

If you've ever watch any of "friction welding" vids, you know the heat damage can happen in seconds. My guess is an instantaneous loss of oil while the engine was under load. All 8 rods at once! Wow. The bottom end welded up before the top end knew something was wrong. Best video!!

this was the best beatdown ive ever seen

We love the total carnage!! Keep em coming!!

These are rare engines! Glad to see you finally tear one down.

Saws all ! Nice touch. Also like hammer head flying off

The motor was probably over revved while descending a mountain grade in a low gear. Initially one rod cap failed, causing no oil pressure to the other rod bearings. Continuing down the grade the engine would be forced to keep turning at a high rpm, even while most of the rods had failed. Eventually the final rod would let go, while all pistons remained at TDC. That's the best theory I can think of. BTW, in my younger years we used to deliberately destroy old engines by running them at wot while draining the oil and/or coolant and keeping them running at wot until they seized. Then we'd tear them down to see what let go (sometimes with a bit of a wager to see who guessed right). Never did we end up with an engine with every rod letting go, never. That is why I'd bet something external kept that engine revving at max RPM even after the rods let go.

Hard to imagine how that much damage happened. You did a great job taking it apart.

Cleetus just posted a video where he destroyed the totally-not-turbo'd motor in his Marauder. Too much boost, and engine got real hot. Coincidence?

I’m new to your channel and enjoy it very much. Just a backyard mechanic seeing the destruction of those engines.

That engine looks clean inside, though one side is cleaner than the other.. I am amazed the bottom can look like that and top looks as good as it does

No malice in the combustion palace. Somebody likes the three stooges.👍😁

A nut welded onto the top of wallered bolts & nuts usually works to get them loose. I think the heat during welding might help.

Greetings from northen Sweden. I have done a fair amount of mechanics on cars, city buses, tractors, boats and snowmobiles and I have never seen all pistons at TDC at the same time. This condition of an engine is what we would call Rather Unhealthy among friends... Great video.

I forgot that I had already watched this video. I concur that it must have been run upside down. All the oil went to the top end and saved the cam bearings until those rods let go. I'm pretty amazed once again to see this much carnage on the bottom end.

the only comparable carnage that ive seen are vehicles that have been towed behind RV's in gear.

The towed in gear crowd are right I think. That's why all pistons are TDC, rods let go and have then been repeatedly bashed out of the way by the still spinning crank.

This was something different. That's why you get viewers. Thank you. How can this engine even start up?

I am like you I have never seen anything like it . I have no idea what could cause this kind of damage. Unbelievable no damage to the cams .

Love these videos, im a DIY'er so I am always learning. When the main cap bolts rounded off, I wondered why you kept trying. Once rounded, forever rounded. Invest in a set of turbo sockets. They remove rounded bolts. They go by another name, which I can't remember but the sockets have a spiral cut edge inside of them. Happy Holidays and thank you!!

That is a new experience for me. I have never seen anything like that either. I agree it looks like some gremlin with an oxy / acetylene torch was inside the engine melting the rods and crank. I wold love to know if the heads / cams ended up still being serviceable.

I am really surprised the block just shattered like that under those hits ...and btw awesome vid lol

I didn't know that I was watching a car god until I saw Eric break that main cap with a hammer!

In all the teardown videos you've uploaded, I certainly don't think there's been such an extreme disparity between the condition of the cylinder heads and the bottom end of the engine... yikes.

I love how you went full on caveman to get the crankshaft out.

Great new solution for a stuck bolt. I wonder how many mechanics have felt the desire to do the same thing only they needed the block for the engine to run?😃

Good job.. like the shots..

"Malice in the combustion palace." Okay, I am definitely using this the next time we get a big rig in with a blown engine!

This appears to be an oil starvation (smoked bearings), mixed with mechanical over rev. The perfect storm 👌

I love these motors ! They make great power and are fun to boost

i was not aware you can just beat a engine block apart with a sledge hammer, this video was taught me something