This Part Ruined All My Work! The World's Largest Off Road Wrecker

So I got a build project and almost wasted the entire week.
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Everything Wrong With The World's Largest Off Road Wrecker!
• Everything Wrong With ...
Over Loaded! Trevor Almost Arrested For Filming.
• Over Loaded! Trevor Al...
Check Out The Flex On The Worlds Largest Off Road Wrecker
• Check Out The Flex On ...
This Is Why I Can't Have Nice Things!
• This Is Why I Can't Ha...
Stuffing The largest Engine We Could Find in the Wrecker
• Stuffing The 8.1 Big B...
Lying To Your Mom, Big Mistake! Dead Ford "Next" To Lake
• Lying To Your Mom, Big...
Customer Goes Off A Cliff! Lucky To Be Alive
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Massive Springs For A Massive Wrecker!
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You Don't See This Everyday!
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I Don’t Think This Is Legal… Forced To Break The Law
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[@kaleywhalie]

As a diesel mechanic and welder, I appreciate that you have encouraged and helped Lizzie explore her interests! Employers like you are awesome, she will become an incredibly valuable member of the team with the skills you have helped her develop.

[@AffordBindEquipment]

"will become" I think she already is!

[@brianelsner4175]

Lizzy kicks ass, love her “I want to learn” personality and she’s cute as hell.

[@chubbyraycactus3246]

Sometimes they become competition

[@gyoungberg]

Sometimes you train your employees and they leave. But wouldn't it be worse if you didn't train them and they stayed? 🙂

[@jakemccann2790]

@@gyoungberg that's a good one

[@researcher4good]

You got the radiators backwards. Since you are aiming for maximum cooling, it needs to be counter-flow. The air is flowing from front to back, so the coolant needs to flow from the back to the front. Hot water through the back radiator first will be cooled somewhat, then through the front radiator where air is the coolest, to get the coolant to the lowest temperature possible.

[@justjonazjameson5559]

Your right!

[@atubebuff]

I think he said at the start that when the thermostat is closed it circulates in the back radiator and when the stat opens it adds the front radiator as the primary.

[@researcher4good]

@@atubebuff , the rear radiator needs to be the primary.

[@sal07las]

Absolutely

[@marcelhartman]

Thank you! Hope they change it to this setup

[@drandisol]

You're all just a wonderful team. Thanks taking us along for the ride.

[@Zuflux]

Man, this show has such a wholesome feel to it. Loving what you guys do, it always makes me smile

[@johnguilfoyle3073]

TIG Weld? OF COURSE Lizzie jumped up and wanted to learn. It's one of the three skills she hasn't mastered yet. Lizzie Rocks!

[@trooperandcooperale3057]

She needs to do an Apprenticeship, she would blow them away.

[@iffykidmn8170]

which has she mastered? in other words what can she accomplish on her own without anyone being there to help supervise.

[@JT_70]

@@iffykidmn8170 Let’s see. She just turned 20. She competes in rodeos, teaches dancing (line and swing, I believe), plays piano, sings, does roofing, welds, assists in recoveries and has led several recently, and probably does lots more that we don’t even know about. She is extremely talented, has a super personality, has a drive to learn and excel and is a cute as can be. The skills she has all begin with someone teaching and supervising an interested student and she is still learning. What have you accomplished? Lizzy you rock!!!

[@iffykidmn8170]

@@JT_70 Getting your goat for starters lol, and I repeat what has she mastered?

[@yeroonvanleeuwen2555]

Feed the back radiator with hot coolant first, that allows a better temp delta for the airflow to coolant for both rads.

[@pfistor]

That makes the most sense to me. The 2nd radiator is getting the hotter air but that is still enough to cool the initial hot coolant and then the coldest radiator is the last place it goes before the engine.

[@mikeworkman3593]

Yes, this is the laws of thermodynamics. the delta T, keep the hot with the hot, the rear radiator will have the hotter air. Actually the front radiators exit air should NOT be able to go into the rear radiators air. It looks like they have a deflector on the rear but it only goes halfway up, they should make it go all the way to the top of the rear so it gets fresh outside unheated ambient air flow.

[@chutoy8355]

Yep! You were thinking what I was thinking. Much like how fish gills work in relation to blood flow and water flow.

[@ken3marcus]

Agreed!

[@lord_kek]

exactly this you get colder air to the hottest radiator. rather than trying to cool the coldest coolant with hot air

[@markusthiel7687]

As one of the 7 engineers, I’d like to say: by creating a longer more complicated path for the water you will create resistance to flow. That means that you will have a lower water flow rate with the stock pump. Most likely this will not cause any issues, if however there is an issue when you drive this thing on hot days you may consider changing the impeller on the pump or getting a pump with a higher flow rate.

[@Dozav7]

I was thinking an additional external pump would help with pressure, but not sure about reliability. If they had the radiators in parallel, it’d actually be less back pressure. Really I wouldn’t worry about it unless problems crop up.

[@conradtonsul7343]

Favorite comment here😂

[@smcox1991]

I’ll be another one of the seven and agree with what you said.

[@noxious89123]

@@Dozav7 My old car had an electric auxiliary waterpump. It was still on the original pump (which still worked) when I sold the car, when it was 18 years old.

[@sHoRtBuSseR]

Glad you brought this up. An electric water pump to replace or be added into the system would be a big help, probably.

[@cephus0007]

Wow! Y’all are killing it! New to the channel. The “can do attitude”, positivity, SKILLS! teamwork, etc…. Thanks for the lessons and hours of useful entertainment. Failed to mention the contribution to community and giving back. America needs more folks like y’all. God Bless! Next time I’m out west hope to stop by and shake your hand. 👍🙏🇺🇸🥓

[@Josh-GT]

Kinda miss seeing Rudy around in these videos.. He's one of those guys that's always smiling. You need that in the workplace 😁✌

[@paulf.8651]

Agreed. My son is about the same age as him. They need to be independent, but it’s tough!

[@dannygarcia9989]

kzbin.info/door/hK8eDXz4le2_waQX5_5iuw

[@Cooldibs]

What happened to him?

[@hega-ks1jk]

@@Cooldibs kzbin.info/door/hK8eDXz4le2_waQX5_5iuw

[@Natures_Symmetry]

​@@Cooldibs Just growing up. Wanted to do his own thing and make it by himself in the world. He has his own channel now.

[@JxH]

Concept of the Day: "Contraflow" When doing heat exchange, the two media should be flowing in opposite directions. So if the air is flowing front to back, then the coolant should be generally progressing back to front, i.e. the front-most radiator visited last, just before sending coolant back to the engine. For clarity, if both circuits of a heat exchanger are plumbed with the same flow direction, then it's a "temperature averager". That said, everything might work just fine. This is just the basic idea of exchanging heat, applied to this example. Cheers.

[@isilder]

Should, if you want the heat exchanger to save you fuel/electricity bills .. in heating some building, for example. When you return the otherwise wasted heat to where you are heating by burning fuel/electricity, you save fuel, input power, money... When the heat lost to the air is just wasted (it being implausible to add a heat exchanger to each cylinder and expect it to achieve anything , in a reliable fashion... ) , its only a question of , is their enough heat exchanger power ? Factor into that the diminishing returns of radiators, as the air will also do cooling on the huge surface area of metal of the engine...

[@rezalbb]

That's right, the log mean temperature difference (driving force for heat transfer) is greatest in a counter-flow heat exchanger. In a parallel-flow HX, the large initial temperature difference quickly brings the temperatures closer, reducing the average temperature difference.

[@Derf1313]

Yeppers, lowest temp water should also be in contact with the lowest temp air! Otherwise the waste heat will just be reheating the fluids... Thanx tho, definitely a kool build !!

[@olspanner]

That makes sense!

[@Wannes_]

Exactly ...

[@naxster]

Counterflow the radiators. I.E. Feed the rear radiator with water first. You want to maximize the temp difference between the air and the water through the whole system. The higher the temp difference, the better the heat transfer. So in the front coil, the air is the coolest, so it can continue to cool water that is cooler than in the rear radiator. When the air hits the rear radiator, it's hotter, so you want hotter water in the rear radiator to continue transfering heat into the air. Hope this helps! This build is awesome!

[@spambeanie2]

Also, the straight through shot through the radiator is not what you do. You should series wire them. If you're going to have a bypass from one to the other you put a thermostat in between like you would on a piece of equipment. I would run a dual thermostat off like a caterpillar system basically a road grader tractor piece of equipment system

[@spambeanie2]

If you want to bypass circulate also run your heater core from your motor to your heater core and your heater core to the front radiator. Then run an expansion tank with a small line to it and to the heater core. The air bubbles will go through the expansion tank back to the heater core but you won't have a noticeable amount of float through them

[@sterlingbingham7975]

This is a group of solid good guys. So refreshing! Can't wait to see this wrecker on the trails!

[@killjoy1887]

Engineer here, my primary question after you found the 8.1 was how you were going to cool it. I feel like this episode was for me cheers from Missouri.

[@rs2143]

Always remember to cover glass when grinding and welding . Vintage glass is hard to find in curves like windshields . And yes it burns in glass .

[@o0RageCore0o]

I learned that welding on my M35A2. it will ruin the glass.

[@Mr87ri]

I to have learned this

[@EvrttGrn]

I learned that lesson the hard way. LOL

[@bushratbeachbum]

Ruined some brand new windows in my grandads workshop with my first grinder. Had only been in a few days

[@michaelm.1947]

Similar lesson learned when I decided to shoot grinding sparks with a DSLR. The sparks bounced right off the plastic body of the camera and lens, but completely pitted the glass element. Running your finger over the element now feels like sandpaper. That was 12-13 yrs ago, but I still have the lens. Sometimes ya gotta keep results of dumb@$$ery around as reminders.

[@jamesbigham9036]

I really enjoyed how Matt explained the cooling process I always find that kind of stuff very interesting and educational. I really enjoy seeing the building process of the wrecker. The practical joke played on Lizzy at the end was priceless. Keep up the great work everyone

[@Scottybravo1]

I had a buddy of mine who use to help me work on my Jeep, like most backyard mechanics he knew wrench sizes and their order. Well he also would come work for me building houses and struggled with reading a tape measure until finally one day it dawned on me to hand him a tape measure and asked him that if I had a 1/2" wrench but it was too small what size wrench you hand me next, he 9/16", yes, but it's still a little small, what size are you handing me now, he said 5/8". I smiled , had him look at the tape and told him, you just learned how to read a tape measure. Never had a problem ever again with reading measurements. Just a little life lesson I had and figured maybe it could help others to grasp reading a tape measure.

[@pennypackmtb2542]

You know Lizzie's mad when you owe her Root beer. The build is moving pretty quick. Can't wait to see this Monster perform.

[@christopherweise438]

Lizzy SO excited about welding is awesome. She is just the best. I'd give almost anything to have an employee with her skills, work ethic, and thirst for learning.

[@23bobjr]

so what youre saying is youre hiring terrible people, so the blame is on you

[@christopherweise438]

@@23bobjr - LOL!! No.......My people are good....she's better.

[@nickhuff90]

@@christopherweise438 never seen someone get so mad over nothing😂😂 like you complemented Lizzy I don’t know what that guys deal is

[@xippzap]

Bro is it not so refreshing to see a young woman who is secure in her gender is not all covered in nasty looking Tats and does not have iron hanging off her face. Has a healthy respect for her elders and has killer work ethics. You can tell her parents love her and have taken the time to teach her how to be an excellent human being...You go girl.

[@christopherweise438]

@@xippzap - Well said.

[@bargeguy704]

It’s refreshing to see all the math, thought and user experience that your team uses to build the custom off road projects. My whole life I have built custom equipment that you can’t buy so it’s nice to see I am not alone. Keep up the patience it takes to teach.

[@robertparishsr.7955]

God ! I love Matt and his crew! They are the best quality people to watch at work. And what fantastic work they do!

[@kenwienken1396]

Based on my experience with heat exchangers in the process industry, you can get better cooling by running the hot water through the rear radiator first and then through the front radiator.

[@aaronwilliams1249]

That's what I was thinking since that's how my condensing furnace works. Run the water first through the rear radiator and then through the front radiator.

[@photic9855]

if everyone who liked this comment could reply to the comment (like this) then it'll have a better shot at making it to Matt :)

[@isilder]

It makes sense from the science of it too... the flow of heat is proportional to the diference in temperature (between coolant and the air flowing past it.. ) but that cooling power that might not be needed . If the separate cooling power of two radiators is well above requirements, then the second radiator can run at less cooling power than its design would allow. All these radiators cooling the coolant are raising the temperature of the air flowing past the engine and exhaust, and thats a lot of surface area that gets air cooled.. so there's a diminishing return on improving radiator performance...

[@keithfork8663]

You just threw a monkey wrench into this fabricobble.

[@ingoldsby]

Came here to say that exact same thing. Hit the initial water with the cooler that is dealing with hotter air, that will give it a larger gradient to dump heat. Move the then cooler water to the radiator that is working with the coolest air possible to dump off more heat.

[@rc6577]

Radiator tech here. You actually want to leave the cardboard on the radiator. It’s supposed to be there to deflect hot air from the environment from entering into your coolant system. You only remove the cardboard if you’re operating your vehicle in cooler climates like Canada or Alaska. I’m surprised you didn’t just install vent covers, that would be much more effective.

[@randytravis3998]

my truck has covers for that reason but it is a diesel pickup ..never used the cover but it takes about 15 mins to get heat when its below 0 degs F ..

[@Qwertyuiop-wg5xu]

that shroud is practically covering the whole back of the radiator, does that not impede the air flow through and behind it? i genuinely want to know how that works

[@NBSV1]

@@Qwertyuiop-wg5xu They will spend most of the time at low speed where you depend on the fan to pull air through the radiator. The Shroud makes sure the fan efficiently pulls air through the whole radiator. You can add one way flaps that suck closed when the fan is pulling, but blow open when going down the road.

[@gazzafloss]

I just love watching these KZbin videos from MORR so much, feels just like we're all part of "the team".

[@fr0ntl1n3r]

as someone who works alone.. every day.. for over ten years... its great to see you guys work together.

[@mannymayer9250]

Matt’s electrical tape on finger instead of a bandaid is the true sign of a real fabricator.

[@lancerevell5979]

Hehe..... I have used bore patch and duct tape to bandaid a shooting range booboo. You make do with what you have! 😄

[@TTANA]

I truly miss Rudy it was nice seeing him and Matt together. God bless everyone on this channel :)

[@Breenild]

Exactly my thoughts!

[@TTANA]

@@JohnSmith-xn4yr I don't know? Just kind of feels like the loss of a loved one. I hope Rudy is doing okay he's a good boy

[@TTANA]

@@Breenild thank you for your reply I just hope Rudy is okay. We miss him

[@JoeKickass762]

@@JohnSmith-xn4yr He's just doing his own channel and his own fabricating. Rudy's Adventure and Design

[@CA11100]

@@JohnSmith-xn4yr nope, Rudy started his own channel

[@tjtobin86]

This is a cool build. Thanks for bringing us along to see it built. Sometimes you only get to see these types of things after they are done.

[@Tael71]

I have an engine oil cooler on my 3500 dualy. Considering the heavier loads you are going to put on a wrecker, especially in the environments you will be running I would highly recommend it. Its really helped out when pulling heavy loads up some steep grades in high heat.

[@davidc4162]

Matt, your coolant path is backwards in terms of cooling efficiency. You want the hottest coolant on the engine side, with the coldest coolant at the front of the truck. This makes a counter-current heat exchanger (air is front-to-back, water is back-to-front) and allows for maximum efficiency of heat transfer.

[@onecrak]

tend to agree, though honestly don't know what else or why run 2....see how it goes I guess

[@BQwain]

I was thinking exactly that same, otherwise the system would be re-introducing the shod heated air back into second radiator air flow.

[@macking104]

@@onecrak you ever been to the second place in the country hotter than h€££?

[@onecrak]

@@macking104 don't think so but she gets pretty bloody hot where I live🤔😂

[@alfonsogonzales2605]

That was cute the excitement lizzy had for wanting to learn how to tig weld. You're wisdom and kindness is being passed on. That what life is about. Amazing man! The man who took time to teach me his wisdom was Charlie Taylor R.I.P.

[@johnwardle9667]

I love this channel! I think you're all a great bunch of folks. I'm half American, half British. I live in the UK, but I spent some time working construction in New Hampshire. Watching you guys work in inches and quarter inches.. it's like it causes me physical pain. 🤣. Millimetres. I think you'd enjoy using them so much. Keep up the good work. That truck is going to be a BEAST!!

[@jameshash1522]

"it's a Miller - it smokes blue!" LMAO!

[@kevinhaley8625]

Lizzie has a lot of enthusiasm on the job, and that is great especially on wanting to learn tig welding, hell, just on learning more about everything……that is a great employee, keep her no matter what she asks for as it will benefit both of you

[@BruceNitroxpro]

Kevin Haley , Heck yeah... and considering the crap we see Lizzy getting or the amount of "skip over" she endures daily, you are lucky she is even around.

[@kevinhaley8625]

@@BruceNitroxpro I forgot about most of that, disliked letting her walk out of a place with steep canyons for a wedding I think it was, they could have had this guy take her out on the little quad rather than make her walk out….uncool

[@willrector9716]

She is his daughter..........

[@AffordBindEquipment]

@@willrector9716 nope, she isn't.

[@AffordBindEquipment]

the more skills you learn, it's another tool in the tool box that no one can steal.

[@Morg27]

Absolutely brilliant guys. I was a mechanic, welder and fabricator for 10 years over here in the UK. I had to stop and retrain because my hands stopped working properly. I was also raised in the 4x4 world and still compete in a yellow suzuki as it happens. Wish I could be over there working on your stuff. Keep being awesome 👍💪❤️

[@timwilliamson7524]

Nice

[@glennstatham960]

I'm a diesel mech in Australia for fifty years so far, sad that your hands gave out after ten. Retrain, relearn, refocus!

[@Morg27]

@@glennstatham960 thanks. I have feeling again but a permanent tremor. I work in psychology now. Needed the help after being in the motor trade 😂

[@donaldhalls2189]

Looking excellent, can't wait to see it finished, all the best to yous and your loved ones

[@robpeabo509]

Great work by everyone in this video. The big truck is coming along nicely!

[@ssl5745]

You can tell Matt’s real passion is building, he just goes out to recover to get fresh air

[@michaelc.3812]

I sure like Lizzie’s “Can-Do” attitude, and I’m thankful to Matt for letting her do most any of the jobs.

[@61Slughi]

Someone teach her TIG welding stat! 1:33

[@thomastessin1663]

@@61Slughi I'm going to marry that woman!

[@plunder1956]

She's got so many skills & interests. It's a very active life with Matt's rescue team.

[@dudeyo7264]

grooming

[@KoltFin]

But is it real? This production has people doing thing they wouldn't normally do.

[@joshuabrown1309]

Matt, especially since you ran into that by-pas issue, you can run coolant from pump to rear radiator first then through front and you'll get a greater total temperature drop. That 195° from front is going to saturate rear radiator. And just leave by-pass heater core circuit the same so you get good heat. Or you can put card board back in lol! I won't bore you with the math I did between oil cooler, condesor, radiator temps. But you should be able to drop 15°-30° per radiator. You just always want your coolest temperature Liquid cooler in the front. Great double radiator idea! I'm super excited to watch this! Gonna be amazing!!! 😃😃😃

[@misswildlife7905]

I love hearing how this is going to work!!!!! As your channel grows bigger and better, always stay true to your common core..I love the dynamics of all involved. "You owe me some root beer now"...How sweet is that!!

[@NardoGreyRam]

The Wrecker has its own fan boys now I guess everyone has such a dream of building his own dream vehicle from scratch, whether it's an offroad or ratrod or rac vehicle

[@gunners4129]

"Its gunna be a pretty shrill noise" *everyone puts on hearing protection except matt Matt: "That's pretty loud, isnt it?" 😂

[@RubenKelevra]

11:50 why not add just hot water mixing valve? Once the small loop opens, you split the flow with a Y pipe: One goes to the hot side of the mixing valve and one side goes into the 2 radiators and then back to the mixing valve on the cool side. The output of the mixing valve goes into the pump and the heater box. So you first heat up your engine and as soon as the large loop slowly opens it will feed-in hot water to the heater box. As set temperature is met, the mixing valve starts mixing it cool water thought the radiator in, as necessary. You could then add a secondary temperature gauge which looks at the temperature in front of the mixing valve, on the cold side. This way, you know how much cooling capacity you have left. As long as the second temperature is lower as the set temperature, you're in the green. :)

[@chrischristenson4547]

great to see another person learning. your shop is full of learning people.

[@thenameseric3849]

This has to be one of my favourite channels, everyone’s so friendly you feel like your right there with them. Great way to start the Sunday.. and I lost it when Tom lifted Matt’s fingers off the hot rad 😂

[@shades3388]

OH-MY-LANTA...I thought I was gonna hear Lizzie swear! That smoke ball trick never ceases to ammuse...LOL "It's a Miller...it welds blue." ~AWESOME!!!~

[@williamoverton7265]

The cooling system explanation was very interesting. This whole build is fascinating. Thank you

[@ABurghouts]

Really happy for Rudy and his amazing channel. But meanwhile i'm bummed he's not on this channel anymore.. Seeing him here was amazing. Love you guys. Amazing content. keep it up!

[@patriot1303]

I love the lighthearted way your shop interacts - it keeps me smiling and even gets a laugh outta me sometimes- love this channel!

[@kevola5739]

That wrecker is not just rad, it’s double rad. Great to see how everyone keeps their sense of humour when the gremlins arrive.

[@aaronbrand3813]

Rad, like from the 80’s…. Playing, you just don’t hear “rad” anymore…

[@kevola5739]

@@aaronbrand3813 - It’s an old truck, with two rads, hence the reference.

[@deanrandall8542]

Can't wait to see this one up and running, it's going to be a beast!😬🤯

[@mikekuczynski1552]

As the eighth engineer I’m not going to say anything. Can’t wait to see it run . Thanks for the video

[@bryancondrey6457]

Assuming you have the room under the bonnet, consider finding a way to raise the fill port a few inches so it is above both radiators to aid in filling. You need to have a common high point to properly purge the air.

[@yeahtube69]

I was going to say something similar. From my experience in building water cooled computers's back in the day before they made main stream blocks and RadFanCoolerReservoirs for them like they do now-- I toyed around with extra large reservoirs where the pump drew from the cooled water in the res than from the cooled water from the Rad. Although this created a condensation effect on hot days from the Res...the system ran cooler with Res to pump to block to rad than drawing directly from the Rad to Pump to block to Res.

[@eriklarson9137]

It was shocking to see neither of you have ANY fabrication videos on your channel. yet here you are giving advice to a professional fabricator. Dang that is weird stuff.

[@Truroben]

Came here to say the same thing. As it is, I'd say he will have a issue with air pockets. I'd recommend adding a steam port from the crossover to the fill port.

[@truckstotractorsrepair]

@@eriklarson9137 it was good advice.

[@EarlLeeBird]

@@eriklarson9137 not all experienced builders have to be youtubers so no need for negative feedback on a valid suggestion. Its a common knowledge that the filler or the reservoir has to be higher than the rest of the system since the air gets trapped in the highest point. To me it seemed that the filler was the highest point so it should work just fine. If its not possible to achieve, there is a bleed valve added to the highest point.

[@anthony5227]

It’s wild how entertaining this channel is. Matt you’re legit funny and the filming is on par. This reminds me of the old automotive TV shows on Spike that were good.

[@ZboeC5]

Those shows had horrible scripting and you could tell that between every scene they had a team of real mechanics doing all the work for them.

[@johnnycash2238]

Yea those shows were only good to people that go to a shop for an oil change. Lol.

[@ZboeC5]

@@leeroyjankins2307 A felon is someone that has been convicted of a felony...Matt wasn't convicted of a felony. Derp

[@Skinflaps_Meatslapper]

@@leeroyjankins2307 Who gives a shit whether he is or not?

[@haroldphipps3457]

@@leeroyjankins2307 was NEVER convicted dumb fuck. Go away if you don't have anything to contribute! 🖕💩🤡

[@aaronschultz946]

Have to tell you this story and I hope you read it. Very funny. My dad worked for GM and was a machine repairman by trade. He was working with a "new" guy and my dad told him to go measure something so they could cut it to length. The guy came back and told my dad it was 33 inches and THREE LITTLE MARKS!!!!!! My dad was stunned and confused. To the point where my dad had to see this. So the guy showed my dad the "three little marks." The guy in question stated he never had to learn to read a tape measure because all the little marks are the same. In which my dad pulls out his machinist scale from his pocket and shows this guy. quote..."Holy crap!!!! that's a lot of little marks!" Sorry for the long comment. Keep up the great videos.

[@charlesistheman]

So I've seen a couple of Matt's videos over the years. I just recently subscribed and I have probably watched at least a hundred of his videos in the last week.... It's awesome to see the work the crew puts in and how they all work like a family. Please keep up the amazing content. You guys are awesome!!!!

[@lucaskuczek]

So much better than most of the drivel on cable

[@elginnelson7934]

Watching and listening to Matt and crew work is mesmerizing. I don't know enough about motors and vehicle inner workings to understand what he is talking about but I sure enjoy hearing their banter with each other and what they all have to say. Thank you.

[@madhucks]

Best channel on YT at the moment by a long shot! Lizzie's excitement to learn to TIG weld , the spinning time travel, huge disappointment thermostat and singing! It's got it all! Great work team!

[@johnme7049]

@Dominic Blissett Don't forget some pretty darn fine whistling! :D

[@ronwilken5219]

Specially as they were turning clockwise yesterday and anticlockwise tomorrow. That "thing" is a beast. Looking forward to it's first excursion to the rocks and gullies. Regards from Canada's banana belt. 🤞🇺🇦🕊️🇨🇦🍌👍🦃

[@michaelc.3812]

and I’ve said this many times. Lizzie is a gem, the perfect employee and future owner of Winder Towing. Willing (and able) to take on any and all tasks. Give her a raise Matt….

[@ammy247]

She's not his daughter, not a future owner.

[@trenellwest9580]

I just adore Lizzy! She amazes me with all the stuff she's willing to do. Welding is one. Love your channel.

[@stevebounds4285]

Love build days! The way everyone has a good time and still gets stuff done is amazing. Matt is hilarious!

[@Boy-sg2ch]

Same

[@jamesmontgomery8403]

As a retired GM technician/engineer, my advice is to use OEM/ACDELCO thermostats on GM vehicles. While thermostats from different manufactures may look the same, they are not and often do not operate properly.

[@rrr3r2]

Same way with Cummins.

[@jmfb.1984]

It's a great project, a great team. Being able to balance the balance between vehicle weight and workforce is a huge goal. A resistant structure is needed for the great work that will be carried out every day, a large structure can be equal to a lot of weight and this greatly favors the sinking of wheels on soft floors in the work area, although how much traction force will be needed? . Besides, I consider that the management of the volume flow of air in the area is very important (how it enters, who displaces it, how it goes outside) (the idea is to steal heat quickly) and also the volume flow of water in the system of refrigeration, you will possibly need an auxiliary electric pump to be able to run the distance quickly in the shortest time. An oil tank greater than the standard, in the engine, in the transmission, in the direction, will allow its radiators to help cool the system and with electrical assistance included, we must remember that oils, apart from lubricating, are also great heat sinks and if they are Coolers give more life to the engine and transmission, minimizing failures and giving more useful life.

[@TheRealPOTUSDavidByrd]

After the explanation on the split radiators at 9:30 they make more sense. Pulling in fresh air for at least the lower half of the second radiator will surely put it to some benefit, even if the top half doesn't end up doing much. Fun fact - Corvettes use a similar radiator setup to your second one that draws air in from the bottom. Very nice 😎

[@ISupportTheCurr3ntThing]

when you cut out his tacks. lmfao. “your dad isnt proud”

[@highdesertrambler2342]

I was in stitches, hahaha

[@Kevy-vn9db]

I always looked up and said “ I wonder where the chickens were roosting for the poop to land there?”

[@NigelMarston]

I have a guy working for me with just the same work ethic for the job that Lizzy has. I love working with him because if I feel like I'm having a CBA day (can't be arsed), his sheer enthusiasm is so infectious that it's not long before I'm full-on too.

[@charleslandrum514]

That will look incredible in my driveway! Can't wait to see it finished. I've always wanted one!!

[@cmcer1995]

Lizzy stepping up to learn a new skill, Awesome Girl!! "I use my eyes on everything I build." Geez, where have I heard that before? Now Lizzy is supervising too, what next whistling? TMI, at least you didn't comb anything else, I hope! The word of the day...Cool! Parts is Parts eh? Well, it is coming along nicely and figuring things out on the fly seems to work as well. Excellent job by the Crew too! Great video coverage as well.

[@Jordan-ws6jy]

Love how excited Lizzy is to learn TIG from TomTom

[@andyheinecke1280]

This channel is awesome! Thanks for keeping it real and showing how you do things. I'm no engineer but I was hooked when you were explaining the cooling system. This rig is so sick, can't wait to see it in action!

[@TexasBig]

****Props to editor of the videos, I know it takes a lot of time and easy to overlook because it becomes sooo entertaining but on point to the project. Thanks! Your video editing is getting dangerous, and I like it!

[@sumosteve665]

I freakin LOVE the "snap" changes. All of you have the best sense of humors - wish I was closer.

[@davidquirk8097]

Hey Lizzy! Learning to TIG weld bad is easy: it's learning to TIG weld good is the hard bit.

[@nuttersspeedshop]

These Sunday build videos make me smile. Every time. I watch all your videos, but working in the shop with friends is the best. This one has reminded me to get back on some projects with my friends on my own channel. It was just a fun video. Keep it up Matt and crew!

[@leadnsteel1428]

I always liked to work on things with my dad weather it's cars, boats or lawnmowers. Was never interested when I was younger but I like doing it now

[@TheOldaz1]

The wrecker continues to evolve and Lizzie continues to impress - well done guys.

[@ger128]

Matt: "It will work. And if it doesn't work, we're going to fix it!" Words to live by

[@kevincoutu373]

As an engineer... Wow, that's really cool!😅

[@Fix_It_Again_Tony]

Wow, that's pretty cool. I think the air should flow through the secondary radiator first, and then through the primary. Temperature difference is important to heat transfer and if the air flows through the primary first the temperature difference may be higher across that radiator, but it would be reduced across the secondary radiator. If the air goes through the secondary first, it will maximize the temperature difference across that radiator, and there should still be a significant difference across the primary because it will always be warmer than the secondary. What are your thoughts?

[@Fix_It_Again_Tony]

@@MattsOffRoadRecovery Yeah, I agree. You should see how it works the way you have it first. There may be an efficiency advantage to the air flowing through the secondary radiator first, but it just might not end up making a practical difference here. And if you need to change it then you will know it's done right because it will have been done twice. Can't wait to see this thing move under its own power.

[@ingluv]

@@MattsOffRoadRecovery Can you get reverse pitch fans that will blow forward, like your forklift likely uses? Or would the air pressure from driving keep that from working properly? Just a thought. I love watching you work with your team!

[@kjknuth9127]

@@ingluv you can get push or pull fans. I haven't finished the video yet but if the area between the radiators is fully closed off then installing a "pull" radiator on the back of the front radiator will push into the back radiator

[@timhurst1813]

@@ingluv I don't know if you'd want to push the air forward against the natural flow when driving.

[@coltin4803]

I love watching videos like this! You did a great job explaining everything for us 👏

[@pianoman4967]

The blue smoke prank was hilarious!! See you edited out most of the cussing! Great job on the cooling system and great beard trims on Matt and Trevor! Best channel on KZbin!

[@madmechanic3213]

As a mechanic of 20+ years I was wondering 16:21 if this motor already had that. Still a great concept of extra cooling, you can never have too much extra cooling capacity!

[@26b47]

Same! I was trying to comprehend what he was explaining with the bypass, seemed like he was trying to re-invent the wheel!

[@69soulseeker]

That rig is going to be a beast! Can't wait to see it completed. Great job everyone!

[@jimmy5860jim]

I love how everyone is commenting on one comment I don't think mat needs y'all help with building a off-road wrecker guys he also probably doesn't care yet considering the fact its not done yet meaning he still needs to perfect it. Also who cares if it runs and does the job Matt needs it to he will be happy. He's expecting problems to arise with it I'm sure he knows and plus let him learn from who he want to learn from he is a busy man taking care of all the idiots that get stuck... So I think matt is fine especially since he has one of the best groups of friends and family out their. ☺️ I'm not trying to say he won't read your comment and be like oooo I'm just saying enjoy the show stop complaining about how his wrecker rads aren't hooked up properly... Who cares this thing is a beauty and honestly I like this wrecker more than any of the others Ive seen. Be happy and healthy guys keep it going and keep doing a 💯 like y'all have been love the vids yeye!!

[@jimmy5860jim]

Who brings a Prius to the sand...

[@Exit213]

Brother matt. You know that I live in the hottest region in the world. The temperature in the summer reaches 54 degrees Celsius 130f and the temperature of car machines rises. The solution is not to expand the radiator slots only. The only solution is to add small fans to the radiator from the outside, To compensate for the lost air in the direction of the truck's movement because relying on the zinger fan is not enough.. Try placing two small fans, two will suffice. Then you will feel that the machine is working comfortably.. Your friend from the Middle East 👋🏻

[@jaredgreen502]

Love this build & the extensive planning going into it. Great work everyone involved!

[@lonhoschar1943]

Ther wrecker project is coming along very well!! You guys got a lot done!! I don't think the average person realizes how much thinking and planning goes into every facet of a build like this. You all are doing a fantastic job!!!

[@allenmorris2661]

Nice to see Ed giving the temps!!!! It's definitely 🔥 out there!!!! 🤯

[@gtir300hp]

Love the radiator concept. If you disided to use the older stile thermostat , without the heat up valve on the bottom of it. You will need to plug up that hole that the valve covers. Or the water will follow the shortest route and make it overheat. You also can't run them without a thermostat. Will also over heat. I guessing you already know that. Can not wait to here it run. So cool.

[@watkinstreefarm6880]

Being an engineer myself I enjoyed the explanation. Looking forward in seeing if it works!!

[@the_abraham_project]

Feeling the same way. 👍🏻

[@shanebrown5668]

I discovered this channel when y'all went to bring the Golden Nugget off the mountain and been watching ever since. Absolutely love this channel and every one of the "characters" involved. Hey Matt....I really enjoy when you teach what you know and are planning. It makes me feel like I learn something every time. Thanks!

[@jacobgibson4035]

I appreciate being called out as one of the 7 engineers that thought that explanation was cool!

[@jwBn13]

Just caught up. A friend recommended MORR. I started at the beginning about a month ago and watched them in order. No jumping ahead. Really. I haven’t read many comments, so if this has been mentioned already, apologies. Has Ed ever been tested/fitted for hearing aides? Once my dad got them, he realized he was missing more than half of the conversations. It was a pride thing for him, but ultimately glad he got ‘em.

[@JohnFL]

Can't answer that question, but I can assure you that I have not seen it asked before. And I always read the comments section.

[@Fei8lo]

The front radiator needs a dip tube to ensure flow goes to the bottom half of the radiator. Also, hot fluid to the inner radiator first to improve cooling as others have commented. It is called counter current cooling if anyone wants look it up.

[@scottmcwilliams2204]

Matt, Please take note of these two comments. You may actually make your cooling worse if you don't fix the fluid instability issue in the front radiator. The way it is set up now the hot water will enter the front radiator, flow through the top portion and flow out the top. The hot water will never reach the bottom of the radiator especially when you are driving and cooling the fluid that is in the bottom half. The cooler/denser fluid in the bottom won't mix with the hotter/thinner fluid in the top. There is a reason the inlets and outlets on radiators are on opposite corners. Also swap the radiator flow. The radiator with the cooler fluid should have the cooler air. Otherwise you could end up with the second radiator fluid and air temps being very close together which would negate any cooling effect.

[@ryananderson8593]

Dude.. you're a genius 🇺🇸👍

[@87sport]

I have always thought the Morvair was the coolest rig but I am really falling in love with this wrecker. I can see the end game now and what an awesome rig she will be!

[@rrangel3015]

Great build...so awesome how it's being built by family and friends...

[@ecka4x4]

Really fun to watch this process of thinking & trying stuff out although a bit more research of things could save time & effort. Love Lizzie's enthusiasm to learn something new. We need more young people like her. Good to see Rudy again. I do miss seeing him & Matt working together. Many fun times sprinkled in as often happens with the final smoke bomb prank being a great finish.

[@socaliguy81]

Off the top of my engineering brain, I think it would be a more efficient cooling path if the hot water goes through the back radiator first. I could be wrong.

[@socaliguy81]

@@MattsOffRoadRecovery Ahhh, reasons. Always reasons. LOL I'm still hoping for my invitation to come up and install electrical/audio/communications/lighting ; ) Let me know! I have some free equipment as well!

[@edgeofeternity101]

Just a thought, it would not hurt to make a rubber "saddle" over the top of the inner radiator to make sure it can not work loose and get into the motors fan. added insurance. The hoses may keep it fairly rigid, but considering where this truck will be used, and that Murphy guy is rumored to be living out on those trails.

[@henkoosterhof5947]

The best heat exchange is counterflow. On an tube cooler: when oil flows from right to left the water flows from left to right. The oil comes in hot en drops in temperature. Where it leaves the cooler the cold coolant water gets in. This way you have the most difference in temperature between cooland and the stuff to be cooled. This gives the best heat exchange. Thats why i suggest to connect the outlet of the engine to the rear radiator. Indeed the air is hotter but there will be the most difference in temperature between coolant and air.

[@Bic804]

Love it!!! Fix your weak link before you need a tow. Y’all need to Get a Transfer case pump rub kit. They’re prone to rubbing through and leaving you stranded.