GM Escalade Denali 6.2L Gen5 L86 Direct Injected V8 Teardown. Not What I Expected!
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- Опубліковано 16 вер 2024
- If you haven't seen the other teardown videos, check them out here! • Blown Up Engine Tear D...
I own and run a full service salvage operation in Saint Louis MO called Importapart, and we lean heavily towards niche market vehicles and parts. This is just one of many parts of this business!
In this video, I tear apart a direct injected 6.2L Gen5 GM V8. This is found in 2014+ Cadillac Escalade and GMC Denali.
This was a core engine which I knew nothing about, like most of my core engines. The results were not nearly what I expected!
I appreciate all of the comments on these videos. I'd struggle to call myself an expert but I've got a lot of experience taking these cores apart.
I don't use a stand on the heavier engines because I have forklifts and tables which make moving and position the engine even easier than being on a stand, plus the set up and teardown time eats away at how quickly I can get them apart. I've never dropped a motor, not even once.
If you are looking for parts shoot us an email at
Importapartsales@gmail.com
Thanks for watching!
Never thought i would be hooked on
ENGINE AUTOPSIES.
Literally took the words out of my mouth
Same. Would love to see Japanese engine autopsies.
Yup
I blame youtube, one of his videos was in my suggestions and I watched it, now I'm hooked
I am enjoying your videos and finding them very interesting. I have a Denali with this engine in it. I especially like the recap at the end when you explain what the mechanical failure was. Any speculation on what event could’ve contributed to the failure would be interesting as well.
I enjoy these teardowns dude. Very interesting.
I find watching your teardown vids very therapeutic.
Keep doing teardowns and maybe try some “building engines from scratch” videos and your channel will continue to blow up.
We’re loving these teardown videos forsure
Failure happened after water somehow got into the oil- remember the milky oil? The oil/ water separated or simply froze (very easy to do in a small confined oil passage and the temps St. Louis had in Feb.) due to cold weather in the lifter/ push rod causing blockage of oil by the ice. This blocked oil flow in the push rod causing the lifter (which is a buffered oil pump) to over pressurize and pump up, causing it to open up the valve, getting hit by the piston, breaking off the hollow exhaust valve and break off the tip of the push rod. (It also scored the cam a little per the video). The lifter locked up so much it tried to pull out the rocker arm and probably cracked the head when the valve was smashed by the piston. Same freezing of water in the push rod happened to the other side that was bent. Sodium filled valves don't need much of a reason to pop. (Can't believe GM still using them). My 1967 GTO 400 cu in with 43,000 miles dropped a valve at 1,500 rpm @ 20 mph- smashed piston, block destroyed. BTW...last Pontiac I ever owned.
A broken spring does not explain the bent push rod on the other bank-the above analysis does. Broken spring can be explained by cold weather and not warming up before driving, making it break due to other carnage.
The screw under the other cyclinder is one used to hold in sensors and EGR into the plastic plenum cover. A bad mechanic dropped it into the motor and was too lazy (or afraid) to get it out. Look at the plenum cover. I am sure you will find a screw with a different patina showing it was not the original.
sodium filled valves are still used because they improve performance, a failure is going to happen either way
engine detective right here
@@mobilemarshall This. The sodium helps with dissipating heat IIRC, which is something you want on an exhaust valve.
R U a Degreed Engineer ?
Every engine can run great with a non-sodium valve and very little to no problems up to 8,000 rpm-if you don't float a valve with conventional hydraulic lifters or weak/ broken springs I have seen LOTS of destruction WITH sodium filled valves at lower rpm. High rpms kill. If you are a poor boy like me build the motor and drivetrain to do the job below 7000. I never liked wasting a race or money-back in the day.
The frozen push rod causing the problem is an easy failure diagnosis if you ever tried to get water from a partially frozen garden hose. I don't remember why there was water in the oil and in the push rod- but there was.
Keep these coming. I like seeing the failures and how engines die. Very entertaining to see the destruction. Thanks.
I look forward to the teardowns, keep them coming .
You and precision transmission are putting out excellent content.
I love these vids! I've been seeing a lot about broken valve springs in LT engines as of late.
Just a bad batch
@@Pabloperes675 looks that way. Not the first time in the industry and won't be the last.
What is “a lot”
@@kyleallen3857 enough that GM issued a TSB for it IIRC.
Weld a trough to the perimeter of your table (like a gutter) that drains into a bucket.
You won't have to clean the floor anymore.
And spend a minute with a wet-dry vac on the water ports. It's rare for an engine to 'leak' on you after that.
Cool beans . Watching this channel for engine teardowns , and then precision transmission for trans teardowns ( and transfer cases )
In the late 80’s, I used to work in a core yard doing exactly this. After the decent parts were separated from the trash it’d all get shoved into a shopping container and sent to Australia. They couldn’t get enough, did that everyday for 4 years
Yes, we got a lot of crap. Though all the ones I saw [and bought] were complete and after bouncing around in a container for weeks were fairly beat up.
Had one with about 50 thou end float in the crank, another with a broken cam. And have seen no end of gunkers with broken pistons,burnt valves, flat cams etc Fords Chevs Mopars.
All the ones I bought though were good blocks. The 2 bolt I bought with excess end float turned out to be a 4 bolt so balanced out I guess.
I have seen imported LSs with plenty of faults. Though LS1s here were very bad news, GMH made the pickup tube too small!!!!! and they ran the bearings. Or oil pump failures. Every Holden dealer had 5.7 corner with cars with no engines or engines being changed. And they all had bad piston rattle as well, By 04 they had finally got them ok.
GMH were patching up the engines as required, no new ones, just patched up ones to go back in the next broken one. A couple of them came back as well.
They are over rated really.
I know nothing about engines yet these tear down videos are super interesting. Thanks for posting
yes we do want to see the WHOLE teardown
At 70, I am a little late on the learning curve, but I thoroughly enjoy these videos. Learn a lot.
WOW! This brings back memories from over 45 years ago when I was a teenager and could just about field strip any chevy small block. Back then everything was easy to work on and kids didn't have any money so you learned to repair the cars yourself. My first car was a 70 1/2 split bumper Camaro SS. It was a rolling rust bucket buy it was mine. Days gone by.
I dont have money and i repair them myself
AFM/DOD failure?
The great thing about watching these teardowns is when you are looking for an engine to build you can see what fails and why which helps you know what to look for in a core for your build. I'm looking for an l.s based engine to swap into my '78 chevy c30 and I'm starting to learn what to look for and what to shy away from!
Lovin’ these videos. Got several of my buddies hooked to. We’re all sub’d. Keep it up, please.
When I bought my 2015 I get to see the engine torn apart, with 8,043. Bad oil pump. GM installed a new crate engine
it's amazing what happens inside the bore when things break off! Very cool. I expected a punched-through piston.
Im a yr late to this party. But thank you for showing it. I recently acquired a 6.2 engine like this from a crashed Cadillac. It was a roll over accident, And I was told that the engine ran perfectly fine after it was righted. And the tow company purchased the complete vehicle for a project that never got of the ground. They drained the oil (what was left in it) and assembled a make shift radiator and it apparently fired right up. Held 40 lbs of oil pressure at idle and 60 at a free rev. 140-K miles on the vehicle at the time of the crash. Thankfully they took there time and took everything with the engine so its a very complete drop out. Even the factory exhaust (manifolds to tail pipes) Even the converters came with it. I think we did OK, at $2200.00 seeing the converters alone are worth $450.00 to recycle them. And $800.00 to $1-K sell them used with the complete exhaust.
Thanks ERIC, I've been anxious to view a 6.2 LT , CHEERS FROM DOWN UNDER
This guy is living my childhood dream. I loved to take my mopeds' engines apart just for fun.
I'm so excited to have stumbled upon your channel.... great video.
Subbed!
As a GM fan I would love to see miles outta all these tear downs you do I know that info isn't available to you but just from curiosity standpoint think that would be interesting
Really enjoy the tear downs. I cringed when you opened it up and saw the broken valve spring. I have a 2020 Dodge ram hemi. That had a broken valve spring bent push rod and damaged rocker arm at 4000 miles. Luckily nothing else was wrong truck runs fine now. I guess you never know.
I love these full tear downs, wiring harness and all.
This is my new favorite channel.
I'm lovin these videos as a home mechanic with a dream of my own shop. This would be an awesome future for me. Keep up the great work and keep the vids coming.
It would be nice to see an updated L86 video where you show in depth like your newer videos
Cool to see this one, same engine in my dad's '18 Chevy 1500 LTZ.
the new 6.2 is different. Your dads 18 should be fine.
@@TheCamaro5 it’s the same motor. 6.2 is the l86 in the 14-18 GM trucks. Those motors are known for collapsing lifters due to afm. The l83 5.3 is included as well
@@Fuck_Off00 2019 they came out with DFM system. Engines are now call 5.3L and 6.2L. It allows up to 7 cylinders to deactivate where the old one was afm and only allowed 4 cylinders to deactivate. Also there was a specific date in 2020 that some of these engines had service bulletins to run a test of springs. there is no bullentin for 2018-2019
Epic revolutions! ! Same thing on my LS1. this was programmed and had no rev limiter. Great video.
Thanks for the video! Can you start giving your opinion what lead to failure? It would be good to know what caused it,... customer abuse or just part failure (bad design) etc...
Those 6.2 break the valve springs all the time. Mine did the same thing but I only had to replace the valve spring.
This is like an unboxing video that doesn't suck.
I have been hooked on your channel for the last couple days. Really cool channel. Keep up the awesome work
Any clue what bent push rod in other head? Enjoy these teardowns.
U can also use cardboard or carpet scraps on your table to absorb spills somewhat.
Never fails i shake my head at how complex these engines have gotten i will just stay with my chevy small & big blocks
I would like to c u check wrist pins. No need to remove them but just a twist and wiggle to see if they rotate and slide side to side as they should while staying square. I almost never see pin failure.
Correct me if i'm wrong, but that color looks like someone didn't change oil very often, which could lead to various problems. I know a guy, who had an Escalade, and didn't change oil like he was supposed to do, and the oil got like sticky tar, and the oil pump had to be replaced, and then the car was sold to some unlucky guy. Seen those golden/brown parts before, sign of old oil.
I really like the end where you talked about the differences in the new and old motor.
My favorite Adam Sandler lookalike engine guy.
Enjoying the tear downs. I always dig into engines after replacing to find of the reason for failures when I am allowed. I wish you had mileage info on these....
These are like toy unboxing videos for gearheads. Great addictive stuff.
Never thought I would see Adam Sandler disassembling engines
These teardowns are extremely informational. For someone trying to working on an imperfect engine and having someone give a detailed BREAKdown of the engine is a recipe for success. If you can get your hands a genesis lambda engines, that would be great too (as a selfish request from a subscriber :))
I won’t lie. I started laughing when the 30 degree bent pushrod was shown 😂
Another excellent teardown video
As a GM Tech I've seen a number of these 6.2's bend pushrods and also a few broken valve springs but never quite to that degree.
Surprised you didn't mention the 1 shorter Allen key headbolt on the left side cylinder head.
Yeah I almost did but not sure why it’s there, do you know?
Keep it going really enjoy watching all teardown
The direct injected cylinder head is probably worth a good buck. Great videos. Thumbs up!
same exact thing happened to my 2015 denali, valve was stuck same exact way in head,spring was broken in 3 pieces, piston had same damage, maybe little more, i replaced head and after inspecting piston very closely i decided to leave it (no cracks, cylinder was good) it runs like new again
My god your series about cars you buy for projects are also amazing!!! Here I was thinking you only made videos about engines being pulled apart, but your series about the Beemer are quite entertaining, when are you gonna upload part V? Its been 4 months🤣 Im glad I subbed, youre way picky but I love your ethic, you do things right👍🏻
If you have a 5.3L Tahoe engine, should do that soon!
Those afm engines get collapsed lifters over time. Sooner than later if not maintained well.
@@20tea It's especially problematic on the engines that burn oil and the owners don't check it between changes. Nothing seems to kill AFM lifters quicker than an engine running a few quarts low on black nasty oil.
I love these teardowns, keep them coming!
I have a special request if you think it'd be worthwhile. I'd love to see a teardown of one of VW's 2.5L 5-cylinder motors, only because my ex has one in her 2006 New Beatle and we've sunk a ton of money into it. And I still wanna see a Cummins teardown one day too! And then for comparison, a Duramax and a Scorpion.
I don’t really try to buy vw engines, as we don’t do a ton of parts for them. The diesels will be soon, but they’re buried a bit.
Trying to get my hands on some new stuff for new videos!
U have to sink tons of money in EVERY German motor, that's just the way they are. I buy chevy cause they will go 300k miles with great reliability and VERY little cost or maintenance.
I really enjoy teardown videos. Thanks.
Very interesting to watch you tear these motors apart, if you could just throw in a few waterboy references while you are in the process of doing the tear down that would be epic 🤣, but if you don't I'll still watch, but if you do the waterboy references I'll subscribe 👍
Thanks I really enjoy your videos
I would like to see you video the whole breakdown! Not boring!! CMON!!! 😂
Like unwrapping a present 🎁
Those behivev springs are trouble.
The main advantage to engine designers, in the past, are that with standard springs you can add two types of inner springs, another smaller spring or an inner flat spring. Basically behivev springs are just cheap substitutes for double springs. Prove me wrong😎
Interesting to say the least. Wonder how much carbon has built up in the intake ports and valves since it is a direct injection engine.
Really good informative video and well edited. Your experience shows through as you describe the damage and broken pieces. While you’re tearing down those engines would you please describe the tools you’re using or put their description in the remarks section of the video... Good Job..!!
So much knowledge on this Chanel
You should give us a tour of the shop and show how you recycle or sell the broken stuff to a scrapyard.
That’s not a terrible idea!
I really look forward to these now!
I enjoyed this tear down. Loved all the rest also
I love watching your videos and so knowledgeable:)
These are fantastic videos and you deserve more views.
Love these engine tear downs, keep em coming!
That engine looked like it has been run hot, all that varnish inside. Either that or it had maybe one oil change in its life.
im curious how many miles on that engine? the build up on the intake valve didnt look too bad....for a DI engine.....
Great videos man! I see snack packs in the back on the shelf there good choice!
Question for I Do Cars: I don't know the first thing about disassembling an engine, but since discovering your channel, I've always wondered: why do you use a ratchet to get a bolt loosened then remove them the rest of the way with an impact? I'm sure that your various Milwaukee impacts can crack every bolt you have to remove, from start to finish. What's the deal with that?
I am not a mechanic but I imagine the impact will crack off a weak bolt head - whereas using the ratchet you can sense/feel a problem before it breaks.
Best way pass time - love these videos!
A very rare example of Honda’s central air conditioning block
thank you for skipping ahead to main teardown, great video.
Quick question... I notice in this video you used your impacts to remove the rod caps and on your gear puller. In previous videos you've done it manually. Whats the diff? Not criticism at all. Honestly just curious. I love your videos!
Use manual wrenches if you want to keep parts from warping or bolts snapping. Use impact if parts are trash or if it’s a part strong enough for an impact.
Awesome! I would have done a lifter, spring, cam swap and ran it.
@12:58 i know that feeling have had cams slice my hand pretty good before
great teardown you should try to do a ford 3 liter v6
I want to see the 6.4 hemi i own one and i want to know what to look out for
Valve seat
Yep. You can even get new ones like that.
Oddly satisfying channel.
really enjoying these vids
Gotta love a good Dexcool bath! LOL
wondering why valvespring would break? you cant really over rev these because of the rev limiters?
As a many years retired mechanic I would love to have your job
Good news! It only messed up the piston. And the valve. And the lifter. And the rocker arm. And the push rod. And the cylinder head. lol.
I would love to see a tear down as part of a live audience. “Car-nage! Car-nage! Car-nage!”
I’m a novice, what’s a price for one of these engines?
HD roller lifters made in Mexico have issues with the roller portion. Maybe same here? I suspect the pistons in this one were forged due to the lack of cracks, especially the bad one.
Just curious - what can you typically make on these? I assume it’s pretty profitable based on the man hours you put into the tear downs.
I love this channel I'm such a nerd for this kind of stuff if you could possibly find a 4.6L V8 engine to tear down that works be cool I have a 95 Tbird with that and kinda wanna know what it looks like on the inside
Seeing that valve wasn't burnt up. Without a doubt AFM lifter was stuck and they drove around for a while with it hammering away. Useally we can fix them by just replacing the lifters the VLOM and and couple of push rods.
Broken valve spring.
Been trying to find a 4.7L v8 out of a 02 dodge ram 1500 can't find anyone that has one for a decent price
I would like to know where the oil pump pickup tube is. Didn't see it when you pulled the pan or the front cover
What is the best cordless impact wrench and why?
have you ever done a vq30de engine tear down, i would be really intrested in seeing one of those!