Compound Turbo 15.2L Caterpillar C15 Core Diesel Engine - Will It Run?

[@ditherdather]

I know you have a life to live off of KZbin, but I agree with everyone else and wish you made more videos. These videos and your channel as a whole are incredible. Love the content. Thanks for giving us what time you do have.

[@Giggles_114]

Right this is like the 1 channel when I see a new video up I’m like YESSSS FINALLY 😂😂

[@publicgiants]

I could not agree more I love this Chanel

[@gopena1]

I think the secret is being a proper diesel mechanic is one of those jobs that truly pays better than youtube.

[@07decker]

I agree. I am a retired Toyota/Lexus technician, and I absolutely love this stuff! This fella knows his shit boys. This tweaks my interest in internal combustion technology, big time. Diesels are king for power. Fucking eh!

[@alleycatvietnam]

I agree.....He's a very knowable person...don't let that Southern accent fool you. Cheers from San Francisco

[@MtnHiker]

No fluff, no click bait, no BS. Straight to the point.Appreciate everything you share. Thanks.

[@37903eral]

KT in my 45 years of trucking and the last 40 years owning cats you are by far the most knowledgeable cat engine man I have come across. Top shelf, sir.

[@chrisfoster3772]

Hi

[@Rx7man]

Not to throw shade on KT, but AdeptApe is really good with his CAT engines as well

[@tinmanstavern]

​@@Rx7manif KT and Adept got together there wouldn't be a cat engine problem they couldn't fix

[@Rx7man]

@@tinmanstavern I don't think either of them need the help of the other :) I think KT has some videos that are definitely worthy of AdeptApe's "Destruction of the week".. Intentional or not

[@randygonzalez6250]

@@Rx7man I think I've heard Adept refer to a compound turbo as a twin turbo, so this guy has him one-upped at least once lol.

[@joshlink34]

This man has forgotten more knowledge about diesel engines or equipment than I have acquired in 42yrs. My wife and I love watching your videos and gaining your knowledge and know-how. Lifetime subscriber here

[@naylagarriques]

I'm from Jamaica and i watch these videos as i consider this gentleman as a professor in Cat and diesel engines, very brilliant

[@ralphbarchen]

the metallic slurry in the engine is alumaseal

[@holymartyr0]

One of the rare few channels I'm both excited to see a new upload, and watch the entire video through. No bullshit, very ready to explain things to a non-heavy equipment person, and relaxed. Thanks for taking all the extra time during teardowns to explain things AND film...it doesn't go appreciated.

[@473mec]

Me too. I always watch his uploads and never skip any of it.

[@chattonlad9382]

And it doesn't go unapppreciated. 🙂

[@wornoutwrench8128]

I'm a retired heavy equipment mechanic. I have a part time job helping a buddy out in his radiator repair shop. The crap that people put into their radiators to "try" to stop the leaks, oh man the junk they use. Radman in a can we call it. Just keep dumping it in until it plugs something up, maybe the leaking rad, maybe not. Always fun to gather around and try to figure it out. We do lots of logging equipment, the old time loggers and some of the fixes they use. Eggs, black pepper, what ever wonder cure the local auto store has on the shelf.

[@MelendezTechnologies]

This channel is an inspiration man, got me to apply at the yancey near my home so I can start learning about these awesome engines. I start Monday and can’t wait to see what it’s all about to work on big diesels. Like everyone else I love the videos and are thankful the videos you do post when you have time. Much respect to you bossman 💪🏻👍🏻

[@KT3406E]

Good luck, hopefully the industry will treat you well.

[@jamesburnette4120]

I wonder if that could have been some kind of stop leak or block sealant they used? Love your videos. Company I drove for bought some C15s. Typically they were on a 5 year rotation. I put 700k on one with only 1 alternator, 1 water pump the rest was just scheduled maintenance. Great engine.

[@geoffrey6000]

My man, back at it! There is something special about this channel right here, nothing quite like it on youtube.

[@12345.......]

The shot of that strap holding the engine gave me a chuckle

[@jeffreygoss8109]

Looked my dogs leash all chewed and frayed

[@dmcdow]

You would make an excellent instructor for diesel mechanics. Your videos are so informative and inspiring!

[@alexmanning8710]

I always get excited about a new KT3406E video.

[@George-dy3pt]

Fact! He is the REAL DEAL

[@dirtfarmer7472]

You & me both, I look forward to the videos by KT.

[@penniesfromheaven2511]

As a man who’s re-pinned an ecm (thanks Cummins!), and changed a manual to an auto in that same truck, your knowledge of all systems including electrical is impressive. I can’t say I enjoy doing this type of work, yet I can’t not watch your videos. You’re a great teacher, even if you don’t wanna be. Safety 3rd! 👍

[@timothypowell5687]

What make, model and year of truck did u convert from manual to auto? Would love to do the same

[@penniesfromheaven2511]

@@timothypowell5687 2006 Kenworth T300.

[@penniesfromheaven2511]

@@timothypowell5687 I had a donor Sterling garbage truck that the motor and trans came out of. I wouldn’t recommend doing it without the donor, as the TCM has a 40 pin harness. There are sensors and shit still on mine that I have no idea what they do. It took me about 2 weeks to get all the wiring figured (working) out, with schematics. I think I lost a couple days bcuz of a missing resistor on end of a data cable my helper cut when removing it. It wasn’t fun, but it’s been running strong since 2019 and it’s my DD.

[@chadhelmer3835]

For a guy that doesn't know squat about these engines, this was an extremely informative video. You're an intelligent young man, KT!

[@cs-gj3yf]

middle aged lol

[@HJZ75driver]

@@cs-gj3yf He’s not. He’s 30 somethin

[@cs-gj3yf]

@@HJZ75driver hes like 34, middle aged

[@robertwest3093]

This man seriously does not know what a legend he is in the diesel world. And did you say 1850 lb/ft at 1200 rpm? Christ!

[@George-dy3pt]

He's definitely a legend! Especially when he ran that tour bus into the tree! And the burn out call out he won!

[@mdaa2kv2]

Looks like a radiator leak that was fixed with magic powder, but it also lost cooling fluid and was run with straight water for a while

[@cesargallo7424]

yeah, cavitation seems to be caused by straight water. The mistery is the hairy thing on the coolant though

[@glennrobichaux7490]

Yea u was thinking the same. Someone tried using stop leak

[@t.w.3]

@@cesargallo7424 Left open to "cool it down" and a cold rodent crept in?

[@cesargallo7424]

@@t.w.3 who knows!!

[@edwinhsingmaster9135]

The remains of "The Stopleak Squirrel" , may it rest in emulsion.

[@CraigOlove]

That crap in cooling system I believe is a stop leak product. I have seen it before in a few cars with a blown head gasket or cracked block . I could be wrong ,but that is what it looks like to me. Cool channel and thanks for the upload..

[@rereg543]

"You don't want any of that junk those 4th graders over at Cummins designed"😂

[@Eastahtata]

They're too busy designing their woke June rainbow logo and writing equity statements to produce a decent engine anymore

[@russellv6234]

@@Eastahtata As opposed to cat? Who couldn't engineer well enough to stay in the truck market?

[@Eastahtata]

@@russellv6234 Can't blame them for staying out of the emissions shitshow

[@russellv6234]

@@Eastahtata yes I can? According yo your post that means they weren't smart enough

[@markm0000]

@@EastahtataI see that on Linked and shake my head.

[@kobusdutoitbosman6240]

…you most certainly know your story about these machines KT : a real pleasure to observe from a distance. Keep it up. In a mediocre world you shift boundaries of excellence effortlessly, and it makes mark. Thanks stacks ex ZA. Great stuff…👊🔥

[@Lance57H]

I'm honestly impressed with how clean that was running for not having the compound turbo setup connected to the intake. Even when you were revving it, it was still blowing pretty clean.

[@MississippiMudMX]

they usually burn pretty clean

[@Lance57H]

@@MississippiMudMX lol, you should see what mine looks like if you try to run it without the turbos 😂. Same engine just turned up to about 800 hp.

[@Kincentc]

I would assume that's because it has a fuel table that adjusts fueling based on RPM and PSI. It could tell there was no extra boost.

[@normpelletier4402]

Please do not stop with the videos you are a great teacher and in my judgement a greater person thank you for your time to do this for all the diesel motor head's

[@212kody212]

Greatly appreciate the knowledge you share.

[@quietbrianquiet]

I feel like I should apply for college class credit after that. Thank You. Please at some point in your life if you haven't already teach at a vocational school or a Cat diesel engine school. The amount of knowledge you can pass on to others is amazing. I think it would give you joy as well as you seem to enjoy walking us through the engines you tear apart. . Thank You, Thank You.

[@jbj27406]

You are truly the Professor of Caterpillar, with a well earned honorary PhD on the subject. You make this material so interesting and understandable. Thank you.

[@alanhiggins2928]

I love the no B/S attitude you have and tell it like it is! I don’t even know anything about diesel engines and I enjoy watching your videos! I reckon if you and I lived in the same town here in Australia, that we’d be good friends!👍

[@jacobwebb9334]

As so many have said, these are the best videos to watch if you grew up on a farm like me, are a trucker, a mechanic, or just enjoy listening to an expert in their field. CAT should pay you as a consultant in product manufacturing, engineering, and sales. Thank you for sharing and please continue to make more. God bless you man.

[@zowiefenderblast4602]

You are a great teacher for those watching and learning! 😎

[@puncherdavis9727]

The best parts of your video is first of all your language pretty clean. You know how to speak with a proper sentence in English which is a joy. You don't treat your viewers like idiots but act like a teacher that shows us things that we would like to know. I loved learning about the compound turbo setup. I do not work on diesel engines but I thought that was pretty cool. I watch plenty of your videos and enjoy each one. You seem very knowledgeable very down-to-earth and definitely a caterpillar product enthusiast .I can tell you as a truck driver for 10 years I don't blame you I never really got to drive a cat most of my stuff was Cummins or Detroit. When the 600 horsepower truck went by with a straight stack cat you just sat they're n a w e and enjoyed the sound

[@904C5ZOSIX]

Hands down the best diesel mechanic on KZbin! Thanks for the great content. 👍

[@jetstream454]

Well I for one, did NOT expect it to fire right off as soon as it got good cranking power. Very surprising revival, well done!

[@DirectCurrent4u]

Every time I watch one of Your videos I always seem to learn something new! I really appreciate everything that You do here on KZbin! I have never seen anyone that is as knowledgeable as you are with these Cat engines! I have a lot of respect for You and Your meticulous craftsmanship.Thanks for sharing this cool stuff with us all. Keep up the great work and stay safe out there.🙏🏻👍

[@jacobhartschuh824]

The man still lives! I would also like to comment with everyone and say thank you for your time producing these in your spare time. I personally miss the video where you talk through all the progressions of the 3406 then go hauling stone. Anyways thank you!

[@robertsmith1030]

Its always a great day to see you have posted a new vidya , and just like you said about zip ties and bias plies , i dont know how ive made it this far in life without your channel !! Thanks for your knowledge and time !!

[@cameronskelton9227]

I enjoy listening to him talk as much as I do mike Rowe or Morgan freeman. Well spoken and to the point 👍🏽

[@honkie247]

Could that crumbly crap in the cooling system be some kind of stop leak?

[@dougstout3663]

That's what I was thinking

[@clynesnowtail1257]

Ah yeah! that would explain the fibrous stuff. They rebuilt it, but were to cheap to use the proper coolant, accrued cavitation damage to the liners to the point it developed pinholes, and they dumped a crapton of stop leak into it to try and save it.

[@themountainman2613]

It’s a grey mouse 😅

[@George-dy3pt]

​@@themountainman2613 😂😂

[@kingsley2565]

Always learn something from you KT and that's appreciated. Thanks for inviting us along

[@flocksbyknight]

Thank you for going through the trouble of sharing this with us 🙏

[@tomparker7140]

Thank goodness liners are changable...no block damage I suppose...good job. Your narration is spot on. Love to watch a journeyman at work plying his trade.

[@greglammers9905]

Good example as to why you should run the right coolant and testing it regularly. Unbelievable how quickly cavitation wrecked those liners. Great video

[@Pledgeman]

Damn this guy is good. Just fascinated watching and hearing his expertise. This is the kind of mechanic you want working on your rig!

[@GodzilaTuner]

I'd almost put that metalic sludge in the cooling system to be a water pump failure. you did mention that it has a new water pump so i would say most likely the old pump had started prematurily failing due to maybe incorrect coolant. Keep up the videos, always fun to see this kind of content.

[@waynebard5809]

I am not a mechanic, I have limited knowledge of diesel engines in general, but I have to say I enjoy your videos so much, you are such a talent in this field. 5 star content for sure, keep up the great work, and thank you for teaching me so much. Intrigued by your knowledge and professionalism you are top-notch and such a pleasure to watch your videos great content keep it coming thanks for sharing looking forward to watching more videos in the future

[@jamiebeverley9705]

Hey KT, Jamie here from Newcastle Australia, excellent video Sir, Cat gear is my weapon of choice, but as far as the Acert Compound Turbo versions I didn't know a lot about, well your video here has hit the spot, great content, and as a lot have said, there is no limit to your videos, they are truly very good, we'll all look forward to the next one, maybe some more C15 performance stuff would be great. Thanks again, cheers from Australia 🤝🇺🇸🇭🇲👍

[@Fackler91]

Great explanation of the compound portion of the video.

[@George-dy3pt]

Couldn't have explained it any simpler!

[@caleb5962]

My eye definitely twitched a little with the condition of that web belt lol. On the flip side, I've tested belts in worse shape that still made the 5:1 safety factor they build those to before breaking. Excellent video. Loved seeing that motor turn over.

[@alfadoofus]

Thanks for filming and uploading . I'm not a mechanic or owner/driver but I pick up what you put down . Cat should give you those goodies for all the advertising you do for them.

[@TiffMcGiff]

Don’t ever change man.

[@RyanD_C]

Learn more from 20 minutes worth of your videos than I would from watching dozens of hours of other people’s. Wish you were our company mechanic LOL but that would be a dishonor to one with your skill and pride! Thanks for these videos!

[@dandan3643]

I just recently found your channel and it's one of my favorites. Your knowledge and sense of humor is great. Keep it up. I honestly love your channel.

[@freightdawg6762]

Your knowledge on these cats is incredible love your vids

[@rikmeyer1469]

Your camera work and fluid commentary is unmatched. I sincerely appreciate the great content that takes so much effort to share with all of us. What you provide is truly a gift. Thank you.

[@ashwinwahlquist]

Everything that I know about giant diesel engines, I know from watching you. Got to be my favorite channel on this site. Very entertaining videos

[@teannatrump2622]

I’m a 19 year old who might be a diesel mechanic or police officer and I love watching these videos I eat up every second of them hope you post more

[@donbrashsux]

A New Posting .. feels like Xmas

[@lntrlp4936]

Best channel on KZbin and I'm not even a diesel mechanic.

[@sbtoolman12123]

I know nothing about diesel engines nor have I ever owned one or plan to own one, but i watch all of your videos and have learned a ton! Please keep making them. Thank you for all you do.

[@randyjones9188]

Your knowledge is just miles deep...I learn so much! Keep it up

[@jpMcnab]

I'm just a 5.9 Cummins guy but I'll sip beers and watch this mans content. It's informative, funny and down to earf

[@jonlowe8727]

Man knows his way round a big diesel engine. Top content as always 👍

[@Wasmachineman]

Man seeing that exposed turbo made me all giggle. Love your straight to-the-point videos KT, subbed.

[@SMGPERFORMANCE16]

Damn I wish you made more videos!!

[@wolfguardian8312]

i've worked with diesel and Gas engines since i was 16yo with my Grand Father who was a CAT mechanic....Yer a well informed highly skilled dude....Thanks 'fer your video....

[@bjhunt4909]

Kt I have learned a lot just watching and listening to you . Keep up the videos

[@THEMOWERMEDIC1]

good to see you back, I enjoy watching these big bohemeth engines. Your videos are very intriguing. Thank you!

[@gethinjones1348]

Another fascinating video good sir 👌🏻, many thanks for sharing with us the tear down process of this engine and pinpointing what was the issues with it. A truly awesome channel this is 👍🏻

[@joshuaoliver2619]

I stumbled across your vidoes and was instantly impressed with the quality of your work, presentation, narration, and content. I have to say you are extremely lucky to have that shop, the tools, and knowledge to be able to do what you do. I would sau you live up to the saying if you do what you love you never have to work a day in your life. Id say you fit that script for sure

[@christopherwebber1104]

I just did a brand new cylinder head on 07 Cummins. Still blowing out coolant tank when hot. Pretty sure he cracked the block, drove it 10 miles highway speed no coolant. Started coolant elbow on fire on top of head.

[@DT-ge8gd]

I love how you explain things and make it so easy to understand. I also know that your knowledge base is quite simply incredible. And the work ethic of your rebuilds is just amazing. The finest detail of torquing exactly and balancing pistons etc... just amazing. If I ever get an engine like this, first I will come to you to get your opinion... then I'll get you to rebuild it, because I know then, it will be done better than the day it left the factory !!

[@edhoran1709]

I've worked on a 6 cyl. in line diesel where the sleeves looked like just what you have there. My motor was actually pumping crank case oil into the cooling system and over-pressurizing it. No anti-freeze in the crankcase, just engine oil in the cooling system.

[@abc-jd9se]

What coolant did it run before the rebuild?

[@edhoran1709]

@@abc-jd9se It was 25 years ago, so not sure, but probably green stuff. JD motor in a 30 series tractor. IIRC, a sleeve kit and new heavier ground wire to the starter cured it. The motor ran fine after that and never had any further trouble. Took 3 trips to the shop before we figured it out. A real head scratcher. First two attempts only fixed the symptoms before we pulled the motor down and found the sleeve pitting on the third trip. Had to use a special dye to figure out that the pitting was where the pressurized oil was getting into the cooling system. Weird thing was the coolant system didn't develop enough pressure to get into the crankcase through those pits.

[@AnonymousEuropeanDriver]

One of the most interesting KZbin channels out there. No bullshit just straightforward information.

[@luvtruckin]

I’ve driven diesel trucks the majority of my life I’m retired now but man I learn so much watching your channel so thank you very much.

[@handle690]

I'll be the one to say I don't want you to become one of those annoying youtubers who makes videos all the time. You're one of my favorite youtubers exactly how your channel is. Don't change anything please.

[@markm0000]

This guy has done so many videos on the exact same engines he has expressed how he thinks we’re bored to tears from these videos. That couldn’t be farther from the truth.

[@ThisManTriggeredMe]

Who would have believed that there's a KZbin channel that actually makes content that matches the title of the video. A+ my man

[@ljkck3578]

The mess inside that thing is some form of stop leak, or multiple brands mixed together. Ive seen the fuzzy stuff plug up heater cores solid, and you can't pour the coolant through a paint strainer without plugging it either.

[@wraithette01]

Thank you for another top tier video. Your commentary in regards the situation with the engine was excellent - thank you again!

[@jackthereaper4462]

Can confirm that's exactly what happens when you run straight water or damn close to it.

[@anthonyscott5407]

As a Shade tree auto mechanic I really enjoy your videos. Even though only understand 20% Of your mechanical speak. But I try. Thanks.

[@Carstuff111]

I bet the liners started leaking due to a lack of cavitation protection, and the person added stop leak to the radiator. That is very likely what the metallic fibers were that you found.

[@AugustusTitus]

They might be fiberglass or aluminum.

[@blauer2551]

As a driver I appreciate your explanation of how this works. Any knowledge I obtain helps.

[@PresidentSkroob12345]

You know, a compound turbo setup works very much like a twin spool turbine engine. Those have a low pressure compressor, high pressure compressor, high pressure turbine, and low pressure turbine (simplified of course - each compressor and turbine has multiple stages). The LP turbine drives the LP compressor and the HP turbine drives the HP compressor. All of these run on concentric shafts, the HP shaft on the outside and the LP shaft on the inside. The air flows just like it does in these compound turbos. Some engines like the Rolls Royce RB211 and its descendants have intermediate pressure turbines and compressors on a third shaft. Each shaft with its associated compressor and turbine blades is called a spool because of its shape.

[@George-dy3pt]

Always one of ya

[@paradiselost9946]

and yet, despite the bleeding obvious solution staring people in the face, noones actually taken that next step. who says combustion chambers have to be a fixed volume? and who says every stage of a turbine engine has to be a turbine? tradition. lot of tradition holding development back. people oughtta use their imagination more. and/or refer to the history books a bit more. the old patents and designs that may have been deemed unworkable... at the time. limits in materials, reliance on other technology, blah blah... if we had had turbochargers about 150 years ago... the so called "otto cycle" would be a brief chapter in history.

[@George-dy3pt]

​@Paradise Lost we can't them politicians and the pos in DC wouldn't be able to line their pockets!

[@Username-qx9gk]

I figured compound turbo is two separate turbos of different size in parallel, both fed off the same exhaust manifold and both connected to same inlet manifold. The "compound" describing how/when each turbo is engaged, not the airflow route like stages in a gas turbine/compressor. This way you get a wider range of usefulness and quicker response/spool up time from the smaller unit. I guess some are in series like this one? Twin turbo I thought is two identical turbos usually each feeding a separate bank of cylinders

[@PresidentSkroob12345]

@@Username-qx9gk All of the compound setups I have ever seen have had one turbo feeding the other like the ones in this video. I don't have any experience with them but the high pressure turbo is usually smaller and since it's closest to the engine it still produces good response.

[@michaelgrayrn4579]

Agreed, thanks for your service to us hospice nurses driving around, watching your videos between patients.

[@Craigs_Adventures]

just plain entertaining. keep them coming

[@40beretta1]

I'm Cummins and CAT Thru and Thru....leaning Cummins. I do agree, If I can find a pre-Enviro engine ill try and pick it up... Eventually everyone was forced into the Enviro insanity

[@ssgpentland8241]

looks like it was a pretty good core. alot nicer internally (where it matters) than on the outside. a dip in the block washer, a fresh coat of paint and reassembly and shed live another 20 years. i agree that they were likely running pure water for coolant or at the very least they were running parts store "all engine" coolant and not genuine Cat diesel coolant. Other than that, the internals looked really good

[@JPRD2379]

Sir - your commentary gave me the hardest laugh’s I’ve had in a while!!!, your very methodical and neat while you work, I appreciate that.

[@jimsvideos7201]

Someone is no doubt salty about putting a heap of money into this engine and getting so little out of it. I'm glad you got it though; it makes for a great video.

[@alsshenanigans2883]

My favourite engine I ever had in semi. Only problems I had was keeping turbo boots and clamps in the truck. 60 psi was amazing pulling hills.

[@dirtfarmer7472]

Thank you for the video I had very good luck with mine 1,128,000 miles when I sold it still original Thank you Sir

[@dw600]

i would assume the inside of the radiator was corroding out and contaminating the coolant system with all that fine particle grit . not sure but yet another great vid KT thanks!!!!

[@singleturbosupra7951]

It's so interesting to see the similarities and differences in diesel engines between different applications. I work as an assembler at a factory that builds diesel engines for agricultural machines (tractors and harvesters mostly). Some of the bigger engines there do use also compound turbo set up just like here. Difference is that the air-to-water heat exchanger is located between the secondary and primary turbos, instead of after both of them like here. Also the wastegate in the primary turbo is controlled electronically by a servo-motor. The compound turbos in my factory seem to be kinda getting phased out though. They are being built a lot less than before and some of the newer bigger engines are getting replaced with big single-turbo setups. But there are still newer versions of some engines made that still use the compound turbo setup

[@camperhauleru812]

Love the content. My friend has one of your motors in his Pete. Definitely a beast of a motor.

[@jazzsounds8159]

Please do a live stream, you have fans and viewers across the globe. You're national treasure on Cat engines.

[@Lysdexis]

Wrong coolant caused cavitation which eventually caused coolant loss or pressure in the cooling system like you said. Tried to fix it with some cheap parts store stop leak that had some kind of metal suspended in it like bars liquid aluminum stop leak. That would explain the weird metallic sludge.

[@richc4122]

Videos are very good, as a Cat technician myself you doing a great job, the liner damages looks like poor cooling system maintenance, very common as most people don’t know how important cooling systems are and how to maintain them properly. SOS is a great tool for this. Hopefully the lower bores and upper deck is in spec. Take care

[@aj9270]

could it be silver seal stop leak ?

[@ictdpowerstroke4591]

I was literally thinking about when this guy was going to post again just today,glad he’s back

[@djr2078]

Thank you for your videos, always learn a lot! Can you make one showing your wiring/cable building process?

[@justinblanchard2746]

If you like his content, besides liking the video, subscribing, and or sharing with someone, the next best thing you can do is let the ads run. Don’t skip ads, let the ad play all the way through, he gets credit for that.

[@two6520]

That is some cool stuff man, thanks for sharing with us! Stay safe my friend.