Finishing the rebuild on the detroit diesel 6-71 First start

Final checks and steps in the detroit diesel 6-71 after the in-frame rebuild. 1st start and test drive.

[@sstocker31]

That is the best looking cleanest GM 671 I've ever seen.....looks like he put a lot of effort into paint and polish on this....props to the owner for that !!!

[@MrRossi1805]

Exactly my sentiments! 😊❤

[@MrCivildefense]

you could rest your sandwich on it while you were working

[@r8edrv4fun65]

Scott, the mechanic, is the owner. This is Lenny, his bus. 😊 It was a little forgotten while they were fixing buses for everyone else.

[@MrLBPug]

@@r8edrv4fun65 That's not Lenny, that's Oz's bus - the guy who did Lenny's new paint job. The engine on his bus was very much down on power and Scott did a complete engine overhaul.

[@johnquilter7620]

And that polished blower cover is really killer.

[@wyatthull6613]

That painter has written his resume with that engine compartment. A true craftsman. Just like you Scott. Thank you.

[@DrDiff952]

Ah the glorious sound of a 2 stroke detroit

[@fatbackjacob5738]

One of my favorite automotive sounds. Detroit running after Scott’s magic brings them back to life.

[@DonRRicks]

First start sounded sweet. Well done, Scott, Jonathon and Oz.

[@wallacegrommet9343]

The sound of a good running Detroit diesel sent me back in time 50 years! I feel young again!

[@bowslap]

The sound of a first start of a rebuilt engine is one of the most satisfying things to a gear head….especially a previously worn-out engine that barely made enough power to pull a greased string from a cat’s behind! That 6-71 certainly matches the exterior appearance of this bus….particularly fond of the exterior detailing of the engine.

[@TruthProvider]

I can’t wait to see the hill climb!!! The engine looks fantastic now!

[@paralyse78]

Nothing sounds better than a Detroit. Could listen to that sound all day.

[@sparksalot4950]

Hey Scott, what a sweet sound coming from that motor! I ran an 8v 92 in a truck and trailer for 250,000 miles. Every day I drove it like I stole it.. magnificent sound at 2300 rpm. Every time you fire up a Detroit it takes me back to that time in my life. Thanks for taking the time to video for us !

[@hillbilly4christ638]

Nothing like pouring the coal to a Detroit going through the hole in the wall. My exhaust pipe became disconnected before the muffler and I liked running that way. Yes, you need to keep them wound up and not lug them like the four strokes.

[@user-yc2oz8kc5k]

That 6-71 revving took me back to my teenage days back in the 1970s Puerto Rico, When the island transit authority had Flxible and GM fishbowl buses using these same 6-71 as engines. Great to hear it run and let my mind wander back to those days of my youth.

[@sha1om]

Pretty sure the fishbowls used 6V71s, not the straight sixes. The older 6-71 has a slightly smoother sound to it.

[@BusGreaseMonkey]

Old looks used inline 6-71 and new looks had 6v71 probably a few new looks had 8v71’s but i don’t think i have ever worked on a 8v in a fish before.

[@user-yc2oz8kc5k]

@@BusGreaseMonkey i know it was a 6 or 6V cause it sounded a lot like yours.

[@sha1om]

@@BusGreaseMonkey New York City had *one* T8H5307A fishbowl with the 8v71, S/N 1166, but it was owned by, and painted for, the transit police department, not the regular NYCTA. Figures they'd have wanted the bigger engine. All the other transits were six cylinder powered.

[@rudycarlson8245]

@@BusGreaseMonkey was this a total engine overhaul on this 671?

[@Tchristman100]

I never get tired of any 2 stroke Detroits

[@wesleypulkka7447]

Scott, another transformation from dog to tiger! No smoke even when the rings have barely seated! You always build back better! Thanks for the job you do!

[@MrTwistedBad]

I know more about "screaming Jimmies" than ever , even tho I installed 100s of jugs and pistons with crankshaft work. Heads

[@bill8582]

Oz definitely has the attention to detail down pat, what a beautiful engine. His whole bus is gorgeous.

[@stanwooddave9758]

So as I'm watching, I see Scott is only wearing a Tee-Shirt, the other guy is dressed for Alaska. I tell myself, must be from Florida. Then I see the bus license plate, Alabama. I was right. Those southern people, if the temperature is below 70 degree's their freezing to death. Funny as all get out. Thanks for sharing Scott. That engine sounds awesome for a first startup. From the video, that bus seemed to have way more kiddy-up, just on flat ground, pulling away from the shop. To one and all do have a Happy Thanksgiving, God bless.

[@themediaman100]

There's some love gone into that. It's a showpiece engine. However, I see a stud and nut missing from that two stud flange on the governer - or whatever it is.

[@BusGreaseMonkey]

The stud was stripped we removed it and a new one will go in. I was not going to not start it because of that.

[@themediaman100]

@@BusGreaseMonkey I'm sure you will. It all looks and sounds as good or better than new. Geat job.

[@wayneroyal3137]

Love watching you fine tune this. We had 671s on a boat years ago and the governor was not set right so shifting was a pain. The old Detroit guy got in there and made it perfect. Great series on this rebuild

[@uglysteve1]

Beautiful. Not a bad job for an ex-photographer with a bum neck.😊 Steve

[@tallpaul9475]

I thoroughly enjoy the sound of the old GM diesels revving up like that. Seems just like yesterday when I was young kid and seeing, smelling, and hearing them in regular service.

[@jimdandy2275]

That engine first started so easy. Like butter.

[@6isenough161]

Music to my ears. Great build.

[@sporty1701]

Nothing, I repeat NOTHING sounds as good as a Detroit/EMD diesel!!!

[@thoraldshib4393]

god I still remember when you got the head rebuilt, then found that multivalve head, then when you added propane, feels like yesterday! missed you driving Lenny around the country

[@notajp]

This is Oz’s bus. Not Lenny.

[@huissens]

Something is definitely wrong with me… I spend my KZbin time between here, air cooled VW rescue/restoration channels, and steam locomotive videos. All have their individual and distinctive sound tracks, but you tuning a glorious Detroit sounds the best! Oh, to hear it start its scream (with the turbo spooling up) as it left the shop! Can’t wait to see the hill climb! Hope your Thanksgiving was great!!!

[@bradleysmith1566]

Another great job! I do miss watching you do a test drive into town. It's always nice to see the buses going through the paces after your excellent work.

[@edmctug8800]

Kudos ! Zero smoke ,true testament to Scott and the crew on this great rebuild,,,!!!!!!!

[@johnnyhunter4345]

Thank you from all the bus lovers of America!!!!!

[@stevebyrne4235]

Sounds a lot better than when it showed up; great channel, thanks.

[@billbrophy6484]

It is appropriate that the auto generated closed captions say “applause “ while it’s running.

[@timinsandiego6979]

If the interior of that motor is as clean as the exterior, that's one good looking motor.

[@robertcambareri1028]

That engine sounds amazing.

[@user-KrackerJack]

Sure wish I could afford an old bus , they're so cool and the sound those ol' Detroit's make is music , nothing like a straight piped Detroit

[@marinablueGS]

Best looking engine compartment on a 4104 I've ever seen! Matter of fact, it the best looking 4104 bus I've seen in a long time!

[@louk231]

Bravo !! Hearing that baby start up for the 1st time was music....Can't wait for the hill climb...

[@heatherkohlwey8379]

Sweet! Two buses getting some love and memories shared with friends. It doesn't get much better. Have a very blessed Thanksgiving.

[@gersonhay984]

Parts came in. Great tuning.

[@UlfWolf_Skater]

So clean! What a sound! I know the feeling and the tension when a rebuild engine comes to life once again! Great job! Looking forward to seeing the hill climb 🎉

[@063317Art]

Scot and Kelly may you have a happy Thanksgiving! ❤

[@mikecollins8241]

Random tip for diesel guys of all kinds: prefill your fuel filter(s) with Seafoam when changing ( should eliminate need to bleed), it'll help keep injectors clean and engine will run fine on it ;) (as per Seafoam recommendations & does NOT void any warranties!)

[@bertgrau3934]

On older engines, you should add some oil. The old fuel pumps and injectors used fuel that had more lube . Thanks to our EPA, oil refineries were required to remove most all lubricants. That resulted in many fuel pumps and injectors needing to be replaced much too soon. Seafoam may be OK for new engines, but older engines might suffer from getting the lube removed by Seafoam. Just my opinion.

[@tonyb3400]

That detroit purring like a cat. Great to hear.

[@knoester7714]

Looking and sounding good 👍 guys

[@cjmarsh504]

That Detroit Diesel sounds awesome

[@repairitdontreplaceit]

wow shes stunning . not one puff of smoke from the rebuild , great work guys :)

[@samspade03]

Love your channel and lenny strokers will never die that sound sam in devon england

[@duanelundgren7985]

So NICE when that first start after heavy engine work sounds so normal!! Cheers!!

[@billtodd6509]

He s going to have put a wooden block under the foot pedal to keep from doing burnouts after he gets all that newfound power, right. Great job. Engine looks amazing in her dress up clothes, Bill

[@focus82grothm.84]

That engine really shines and sounds excellent 😊👍 Great video 😊👍

[@hifiman4562]

I just noticed a bus graveyard in Williams CA. There must a couple dozen of them, sitting on an industrial lot. You can see the lot from I-5.

[@halhenryg]

The 6-71 not only sounds great, but also looks amassing. Attention to detail.👍👍👍👍

[@creativeloafer9792]

Sounds perfect! Gonna climb it now!!!

[@GWBridge]

I only ran across Scott and the channel two or three months ago, and by now I have the illusion that I have intimate knowledge of buses and Detroit Diesel engines! It is interesting how much you can learn by watching these videos. I love it when I can diagnose a problem before Scott describes what's going on because I have learned so much from him already. Bear in mid that I have never worked on a bus or a diesel engine in my life. I just love any kind of straight six engine, but these 2-stroke diesels are just brilliantly designed and so perfectly suited to their application. Just beautiful machines. KZbin is a very strange experience when you can watch someone else's video of some guys trying to start a Detroit Diesel in an old tractor trailer, and here I am sitting in my recliner never have touched one but knowing why their engine won't start because I've been schooled by the Bus Grease Monkey!

[@johngaither9263]

Go back 3 or 4 years in the episodes. Back before Scott came off of the road and began building the hill top complex. He and the wife traveled the country making dilapidated 2 stroke Detroit motors run right. In and out of frame overhauls and removing heads was a daily event. You'll learn Detroit's from top to bottom watching them.

[@GWBridge]

@@johngaither9263 Yes, John, I've been plowing through those old ones. Enjoying this very much and wishing I had engines like that in my road cars!

[@michaeld9731]

Very nice! Well done! 👍 🙂

[@awake.collective]

100% goals. What clean freshness

[@kevinrhodes335]

Even on the very first start, it just sounded so amazingly smooth. Well done! And so pretty too!

[@lugnutgmc]

Damn, that thing fired up right now. That was impressive. Nice job!

[@noelmcgarry456]

Love that engine looks the goods (I realize in only a short term appearance )

[@David_Stee]

Looks and sounds great!

[@18robsmith]

Sounds as good as it looks - SWEET 🙂

[@alanbranch851]

Has to be so satisfying the engine looking good and sounding great 🙌

[@jackkreighbaum783]

Love that sound.

[@drdiesel1]

What a beautiful sound!

[@rockymini625]

Beautiful! Sounds good to!

[@mikenonameneeded3485]

It seems like you and Oz have become very good friends. You and him make a good team.

[@72polara]

She sure is running great now. Nice work and happy Thanksgiving.

[@rickey5353]

Nice job, Scott. That first fire-up sounded like a fine Swiss watch.

[@kevinhamling1963]

G'day, That's a sweet looking engine and what a sound. ✌️ Peace

[@carcrazysammy]

That engine is pure music.

[@u.p.tinkering]

Dang, really moved out good there at the end! Can't wait for the hill climb!!!

[@woodwelder]

That sound never gets old ..! Two stroke heaven .. got to love the Detroit Diesel chorus 🤗🙏

[@bnkwupt]

Very nice rebuild. Happy Thanksgiving! 🚎

[@stephengorin3059]

Just fantastic and a good end to all of your hard work that was put in !!

[@marksmith-ew7ir]

nice rebiuld on bus engine started nice well done scott. fine tuning after nice warm up new fuel lines should run sweat .

[@levin645]

Sweet sound of success.

[@davidowen888]

That's NICE 👌 REAL NICE ☮️✌️

[@kb748]

Great Job Guys

[@josephperkins4163]

Great sounding Detroit, started so easy! Clean air, clean oil it will last!

[@francishagen8508]

What a Nice sound❤

[@timw4561]

That motor is a work of art! Wow! Sounds amazing. 👍👍

[@rickhorsley9383]

Must be so satisfying to see all your work and expertise culminating in a great result Bravo

[@franciscojosepellegrino2553]

Great job, congrats

[@chrisbarnes2823]

What a lovely sounding engine!

[@kobusdutoitbosman6240]

that first start is magnificent❗️

[@rickweissmann7101]

Happy Thanksgiving to you and yours. God bless

[@LaLaLand.Germany]

This is so nice, not a whiff of smoke! I knew a Detroit can run clean! What a lovely engine. And pretty, too. GOOD JOB.

[@jdeltoro518]

Sounds great. Great job

[@hiteck007]

Sounds like a strong beast now

[@user-dg2ji4cj7g]

Great job 👏 sounds great

[@johnstanczak5075]

Great job guys, runs and looks fantastic...

[@robertcormier242]

Wowwww..nice job guys looks very very nice.....happy turkey 🦃 day to all 👍

[@MiguelMartinez-gd1sv]

Wow sounds sweet and looks great

[@nascar427]

Great job. Looks so nice and clean also.

[@srenlarsen7580]

Wow 1 class work

[@daviddamico4288]

Nice work Scott, sounds great

[@woodsontr]

Good job! The motor looks and sounds great!😉👍

[@PCMenten]

You make great content. It’s amazing to see an old GMC with a Detroit Diesel restored like you do. Now for the hillclimb of glory after the hillclimb of shame.

[@raygunsforronnie847]

Wow, she cleaned up nice! Sounds great, Scott.

[@jeffcooper5789]

Looking good it sounded nice. Liked the way it took off down the drive way.

[@drsadventures]

Nice work!!!

[@williamedwards8183]

Work of art

[@donaldewhitlockjr]

yall did good work on the bus