Detroit diesel 8v71 engine overheated, broken valve melted piston rings getting rebuilt Vintage bus 

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I love the sound of that 2 stroke Detroit.

Scott, please ask the young driver to take one recommendation from a professional driver with 45 years of experience. It is important to keep both hands on the steering wheel at all times, unless attending to other driving related tasks, such as using your directionals. Perhaps, one day, he will hit black ice, or a large pothole, or will suffer a front tyre blowout; in which case having both hands on the wheel will give him a far greater chance of remedying the situation, and possibly saving his gorgeous daughter from injury. This is mandatory in Europe, for excellent reasons!

40 years ago I had my first driving job, it was operating a shuttle from the airport to downtown motels. The buses we had when I first started were MC-7. Months later we acquired a couple Eagle 10's (4 speed Spicer). I got good at shifting the 4speeds , they shift just like a semi truck. Then we got some GMC 4905 (Buffalo). These were 4 speed with no clutch brake. Before I left the company they acquired some MC-8 with the 4 speed manual. They constantly overheated a problem with the MC-8. Your video brought back memories of my bus driving days. For the last 35 years I've been driving semi trucks, the last 15 years driving local. The 8v71 Detroit (318) is a motor I'm very familiar with a long with 6v92 (silver 92) Detroit I've driven buses and trucks with these motors. I enjoy watching videos about the old Detroit Diesels.

Your granddaughter is adorable. I learn something new every time I watch one of these and I don't ever have a bus. Nonetheless it is education and very interesting to me.

What I learned from an old mechanic who was the technical director of the bus fleets in Israel (Egged): Always, when you reach such a level of engine disassembly, the conrods bearings must be replaced. It makes no sense to save on these small and cheap items, which, contrary to their appearance, are critical and very important. The pistons and sleeves are new now and tremendous pressure is put on these bearings, as opposed to the lesser pressure that was put on them before, when the engine was already worn.

Now that's what I call improvement. Looks like that bus has a very strong engine now.

That was a wonderful family moment you shared with us. Thank you for not just fixing busses, and videoing them, but also taking time to share your exciting family experiences too.

One of our older LaFrance rigs ran a 6V92 in it and we were at a working fire one night and she started banging pretty good, Had a very slight drop in power but she kept pumping until the end of the call. Pulled it apart and it had sucked in a broken valve and hammered it through the top of the piston like a nail. Told them that she was a typical Detroit, would eat her guts and keep running with problems that would destroy other engines. Dropped in a replacement piston, rebuilt the head and she was back to front line status in under a week.

Gotta love the Detroits! Had an empty logging rig chase my wife and I UP a mountain road in North Carolina one time. We didn’t know the road but we were in a Chrysler 300 with a V8 and I have a good bit of track experience. I would pull away just a little bit in the turns and here he’d come filling the mirrors on even the slightest straight away. We laughed and played the game for about fifteen minutes when I pulled over and let him by which earned me two toots on his horn. He was very difficult to stay up with. The road finally straightened and he pulled off for a load of logs. I stopped next door and congratulated him on his excellent driving. Turns out he’d been driving that road for thirty years and was sitting behind a “breathed on” 8V92. Great stuff!

The remarkable sense of accomplishment, we could all feel. Kudos to the grand baby Emily!

That was quite the rebuild. Enjoyable viewing.

That looks like a great bus. Now it runs as good as it looks.

Awesome video! Really like the closeups and high resolution. Good detail. Always looking forward to new releases. Love Ellie's participation, stills & vids. Hard to beat being Pappy. Love to see one per day but I know that is a big job. Keep 'em coming.

The first start of anticipation and intense sense of relief when it pops like the 4th of July , amazing sense of accomplishment and satisfaction. Great video. Happy new year. 😊.

Very nice, enjoyed the entire rebuild. Great looking bus. Looking forward to an on the road test drive. Great way to start the new year.

What a beautiful bus. And quite the beast. Great addition to the family and the fleet. That baby is adorable.

Beautiful work Scott for a beautiful mobile home.Very well done team.

As always, great great job Scott and Tyler and all helpers, especially that beautiful granddaughter! Glad you had a nice family time too!

Amazed that the engine ran with a bust valve. Nice job in the rebuild.

I am a retired auto mechanic with 43 years working on cars. I can tell you i find it so much more interesting seeing you work on these busses then any cars . What a beautiful family you have.

BGM- Those diesels can really take a hard hit and come back strong! WOW! Great job Scott + Company!

Been following you since you were a mobile bus mechanic. You have had such great vision in getting this whole thing together with family now grandchildren and having the facilities that you built!! What a great great blessing. Good to see you able to enjoy family and have the flexibility to have the privilege of working with your Son and Family! All the best of 2023 from Surrey BC Canada

Sounds nice and sweet - quite a change from the spluttering and staggering before the rebuild. That's going to be a great cruiser for your kids (and Elly)

Wow, Scott what a great video! Your granddaughter is a real cutie-pie! Super job on that engine, the sounds and visual performance tell the transformation that engine underwent. Thanks for sharing your personal family experiences, that's very special to us great g-pa's! I'm always happy to see a new video from you all. Blessings for the New Year and for the wonderful work you do! Stay well, stay safe!

Love to see people working on older stuff and know what they are doing. Truly professional. I have minimal experience with Detroits , I worked in a fleet truck shop that had a few old ones hanging around, also saw you helping Dangar Marine guy out on his channel.

Beautiful bus, sounds great too and so much quicker up that hill

I do not own a bus but someday I might get one. I subscribed to this channel a few years back because I love the way this family and the employees works together. They are so knowledgeable. Great job guys. And extremely cute grandchild. I remember when mine where that young. I really miss those days.

That's a damn nice coach.. even nicer now that it runs right! Great video. I learned quite a bit. It's nice that these motors can be rebuilt in frame.

Excellent ! Your daughter and son inlaw must be so psyched😍 she's a beautiful bus☮️

Seeing Tyler in this video ,brings back so many memories. Those early years were so precious.

Great to see the rebuild finished, your grand daughter seemed to enjoy going for a ride. I feel Tyler's pain, 2 things I don't miss from my former careers are the smell of burning electrical components and cold start clag (especially when you have a depot full guys starting at the same time).

It always comes in handy to have a small team member like your granddaughter around to do the work that requires crawling into tiny spaces 😉 (J/K of course. Nice work on getting the engine to run much better. That bus clearly deserves it.)

What I really like is the constant positive attitude to all the problems you encounter. Me I get all worked up for a stuck bolt! Learning from you! It's therapy!

What a beautiful bus, inside and out. Great job all!!

Good to see Leroy. And your granddaughter looks like she's having fun. To help not curb the rears have the spot mirrors set so you can see the rear end. Buu wide enough you can see both lanes and shoulders on 24/40/65 in Nashville in the center lane.

*the engine is very similar to Scania. We are filming a repair video right now.* 👍🏽🔥

That’s a pretty bus and now has an engine to gettr done!!! Great work and your content is amazing!

It's amazing how much incompetence is "out there" in supposedly professional shops. As a Diesel Technologies student eons ago, we referred to a local shop with the initials, DSU, as Dumb Sh*#s Unlimited. Not much has changed. It's good to see you guys doing stellar work fixing other people's mistakes. You're a credit to the trade.

I love the way you are passing down your considerable expertise Scott, through Tyler and now also through his new apprentice (I'm sorry, I don't know his name). In the years ahead, these old buses are going to need expert and specialist mechanics to keep them running.

It was neat to watch this TEAM operate I think Tyler (already an able mechanic and engine whisperer) has really risen to be an all around Master. While it appears that you folks are pretty much maxxed out for time and shop space, I think opening a spot for an intern would be cool. I also hope you consider a week or long weekend of Boot Camp for bus owners (using buses already in your shop) and particularly for folks JUST thinking about buying a bus; basic knowledge, spotting faults, runaway engines are not our friends, bits of knowledge you suffer to get so they won't have to, treating the core issue not just the symptoms and safety, safety SAFETY. I believe you could fill up several classes a year with a 'clean' classroom day off site, a hands on, down and dirty day and day tying up loose ends, Q & A, etc.

I'm amazed at the fact these busses will run with engines in the condition some are in. Seems like almost nothing can stop them.

I love the way that you approach. To repair work, I have been working on transit buses for 29 years. I've been an inspector for the last 7 since I. Retired, inspecting the drive train and all components being put back on the bus. I would love just to see your operation in person. God bless

Classic old Detroit. Not too many around anymore. I was a truck guy and shied away from busses. Good job. Well done.

Beautiful grandbaby Scott. Congratulations. My days come'n! Can-t wait.......enjoy!

great video, love the sound of them Detroits. Used to keep them serviced in yachts for many years :)

Good job guys...I used to use reusable studs to line heads..keeps mistakes from happening or moving o rings or head gasket....

My dad did an in frame rebuild of an 8v92 for a well drilling truck. The old diesel was the power for the drill. I'll never forget hearing that thing fire up for the first time at around age 12. Scared the living crap outta me, but now at age 34 I'd love to hear it again. These engines are so cool, and epitomize American engineering and expertise.

What a gorgeous bud and great job on the rebuild what an improvement

You guys are awesome. What a great job there’s not very many people left that do this kind of work quality work thanks guys.

I work five years on a truck with 8v 71 detroit engine.i love that sound.hello from Romania

Gorgeous Bus !!!! Beautiful Grand Daughter !!! Fine Family Moments Cheers from Calgary

Wow, great work and what an improvement! Love the work you are doing on these beautiful old buses.

Wow nice work... another resurrection up on the mountain! Back in the day when I was taught to drive a charter operator's fleet of vintage ex-Greyhound 4106's by vintage ex-Greyhound driver Mr. John Brandt, he passed along some wisdom about taking those old coaches around the corners in the city of Philadelphia. He'd say, "Kid, when you corner, you drive the g*dd**n BACK of the bus, not the g*dd**n front of it!" and "Kid, if the g*dd**n room's there, TAKE it!" He also taught me to hold the wheel with my thumbs outside the wheel, so if it whipped around when the bus hit a pothole, it didn't bust my thumbs. I never dinged one of those old Greyhounds worse than they were when I pulled out of the yard and I never broke a thumb. Thanks Mr. Brandt and thanks Scott, for dredging up all these old memories!

Nice looking bus and it runs well now!

Such a beautiful bus!! Nice job Scott and Bus Grease Monkey crew!! Congratulations Jonathan!

I like the tear downs and details you show us. thks.

I guess he’s a great kid a hard worker, and a new father sometime this young generation, and they had to learn by their mistakes. That’s what I did. Thank you for the video.

Wow that was cool, I’ve got a lot of respect for someone who can pull that off. Thanks for sharing

Fine work, Scott!

Great job, as usual. It's a beautiful bus , now with a rebuilt engine done by qualified mechanics, she's ready to put some miles behind her. Boy, that young man married into the right family, lol!!

I feel sorry for the people who you bought the bus from I bet they wish they had found you before they went to the dodgy mechanic Good for your family Scott I also have my daughter and son-in-law living on our property and see my granddaughter every day Ours is not quite walking yet but having them here is just the best 👍👍😍😍

That is a beautiful bus, I love the way that they did the dash. Your granddaughter is too cute, but man do they grow up quick.

Made to be worked on. Installed to be worked on. Neat to see. Thanks for the quality content.

Nice work what a great job you’re all doing and what cutie Emily is she reminds my daughter at that age she was lying under a car with me replacing the gearbox she would pass me the spanner’s fantastic video keep safe guys and many great travels from Wales 🏴󠁧󠁢󠁷󠁬󠁳󠁿

That is a beautiful bus. Now it sounds as good as it looks.

At least it made it up the hill in one go, before the rebuild, unlike that other one that took four or five trys. 😆 That motor was messed up! Beautiful grandbaby. I ran the heck out of my turbodiesel Peugeot in the mountains back in the early 90s. It blew the headgasket and put all kinds of little cracks in the head. It did no damage to the lower end. It only cost me around $400 for a new head, and labor was around $ 200 or $300. Just a 2.0 litre 4 cylinder.

Great job rebuilding that engine!

OMG! That baby is adorable. You have a nice family.

That's a really nice bus!! Now it's got a runner for an engine too!

Plugged my ISM block warmer in and got exactly that. Was a bare to pull out. Nice work all

Neat piston tools. Boy, whomever worked on that last did not know what they were doing for sure. Few out there old enough to have worked on these when they were common.

Beautiful job, at this cool Motor home.Congratulations.

I can see Grand Pa beaming ear to ear! You got him Ellie!!

Beautiful bus, now with a well running engine.

Saw Leroy, haven't seen him in quite awhile. Great job on the bus.

With a broken valve, punctured piston and at least 3 seized top compression rings it's a compliment to the manufactures of Detroit Diesels it climbed the hill at all. The after repairs run was in the bag. When they're good they're great and when they're bad they still beat walking but not by much.

Beautiful job and bus! Congrats Grease Monkey!

That Detroit is running nice. No smoke at all climbing the hill.

Nice bus. With that rebuilt engine should last a long time.

Another great rebuild job nice job nice bus too.

Wow, what an improvement, perfect.

Excellent work you guys (from Pakistan). The little baby and track were awesome!!!! God Bless your family and the bus

nice looking bus/RV good score for the kid!

My first time seeing your channel. This video was way cool! And I'm not a diesel guy. This makes me want to go and get a bus, lol. Love that cute grand baby! 👍

13:30 awwwwwwwwww that’s absolutely the best part of life. Thanks for sharing. Awesome stuff!

That bus must be a dream buy for you, a beautiful bus with a bad motor that you have the knowledge to fix with ease, yet get a good deal on the bus due to it's problem.

He sure is a sweet little girl. I’m glad she’s close to you guys now.

Nice sound when loading and unloading momentarily .

Motor looks beautiful, all cleaned up and ready to make 2 stroke music

This is a welcome break from speaker of the house proceedings.

Sound good on the hill pull , nice job

Exactly what a fresh 8V71N should sound like.

Gotta love this bus, and the rebuild

I'm amazed how many so called "Diesel Mechanics" Don't understand the Detroit Diesel!! When I was taught "Diesel" by an old timer "Leroy Owens" he told me "if you can build and understand the Detroit, You can build any of the others", but If doesnt' work the other way now does it? I have never heard you mention the "restrictor fitting" in the return fuel line. Great video.

Great improvement when engines are makin power !

That is a really nice Bus, I like it. Did you know in 1970 I was the youngest School Bus Driver in Europe ever, I still hold the record at 18 years old. I drove a 1966 International 44 pass Flat Nosed school bus for the School run and for the 8th Infantry Division Band, the US Army Loved me. You had to be 21 to drive any Bus in Europe but I got an exemption. I also got to go to Nato Hq in Brussels Belgium driving Diplomats, but they assigned me a slick Mercedes Tour Bus handed me the Keys and said Figure it out Hot Shot. So I did. Then while I was there the USAREUR Commander his driver got Ill and they pulled me and I drove him a couple of weeks a 4 star General. We got along good. I got paid back then 200.00 a day dislocation pay and I was making more than a Full Bird Colonel with all expenses paid. I was only a E-4. I went to Nato three times all the money was tax free. That was a lot of money back in the day. I drove for some famous people. My Uniforms were done by a Maid Service and I had Hotel service and a Diplomat Car to drive when not in the Bus. I had 2 grand I signed for in my pocket a Diners Club, American Express, and a US Govt Credit card and a Top Secret Clearance. My home base in Bad Kreuznach Germany was jealous of the Trips made. The General Liked me. Long Story but I never washed a Vehicle while on the road the Motor Pool did it for me. I never gave or turned in an expense ticket but I was considered the lowest spending Soldier of any assigned drivers by 50% they could tell. They knew how much I was Spending by the Bills that came in but I never was asked to account for the 2 Grand I signed for and I had receipts. They shipped out so many drivers for Drinking and messing up. Me I just did my assignments.

Nice work guys hardworking 👏

Remember, your grandkids are your reward for not killing your kids!

Very nice Engine work!