1st start detroit diesel 671 after new 4v head install

[@BusGreaseMonkey]

$147 including tax for all those hoses.

[@MostlyInteresting]

I would get AN (and other) reusable fittings from summit racing and hose. Build my own, like I have done for rods and race cars way back. Keeping some hose and a few common fittings with me, just in case. So I can make a hose on the road. Cheaper? Not really, but flexible.

[@HankHill757]

Great price, where did you buy them?

[@jamespn]

Great price on the hoses. While on the road in rural areas Napa maybe the only game in town.

[@deanhauser6626]

Why is there 3 rocker arms per cylinder? And 4 valves?

[@BusGreaseMonkey]

Outside two open 2 valves each. Center one fires the fuel injector

[@pcspecialistpdx]

I was hoping to learn who did the crappy work on that head. In any case, it did turn out to be a blessing in disguise. We all learned a lot from it and you got to meet some awesome people because of it.

[@alteredmoodsdeep]

‘“Oh, yeah, i’ll just redo my entire fuel system after replacing my head, might as well.” Respect.

[@dross1492]

I can barely keep my oil changed in my cars & motorcycles-I love following Scott! When I see him hammer on a monster clutch, new head, etc. Then I wait for his video showing it run.

[@brendangeran7661]

The sound of that motor at a balanced idle sends shivers down my spine, especially with no hunting, hope I'm not alone with this, Scott, you're the tops!

[@jerryhayden8720]

Man I'm getting the fever for an old antique GM bus. I remember seeing the fugitive get off the bus the first of the program and get back on a bus and leave out at the end of the episode. I've always enjoyed the sound of the two-stroke diesels. Used to see quite a few of these pull in to fuel at the truck stops when I went to California and I'd have to go talk to the owner if I could. I really am glad I discovered your channel and really enjoy the videos. Man I've got the hots for one of these. 🇺🇸👍

[@alloutofbubblegum8165]

I was the head hose maker at the Napa store that i used to work at back in the day, it was really something of a stress reliever for me. I once spent a whole day back in the hose room cleaning it up and organizing all of the fittings, it was a complete nightmare. After that? I got on people's cases for not putting things back after pulling them from the drawers and bin's.

[@mojavedesert519]

Installing a primer pump is a pretty good idea. Back in my 2 stroke trucking days I put diesel in a pump up garden sprayer and attach the hose with a clamp.

[@justingray3456]

Those cicadas in the background make me think of hot, humid, dog day afternoons.

[@randytolle6706]

My oldest Grandson was recently talking about cicadas and I had never heard that term. I thought it was Locust making that sound when the family visited Oklahoma in the summer.

[@jmstew642]

That motor sure sound goooood, purs like a cat... Must of been put together by hand tools... Nothing like the fine touch of a machanic hands... Good job father and son!

[@zephyrold2478]

I second that.

[@nozmoking1]

The 671 is such a delightful mix of old-school physics and common sense. It might be a bitch sometimes but its simplicity and reliability are really hard to beat.

[@pettypendergrass8596]

man, i dont have a clue what you are doing, but i watched the whole thing ! great vids!!

[@DISOPtv]

I like the tap on the back of the bus starter you have!

[@trains4one]

I am amazed with what you know about the old Detroit diesels and making then run.

[@randysteele7386]

Great video as usual, don't see how you have the patience for that, Scott you Tyler are exceptional,and also the little lady behind the camera, keep up the good work.

[@brandoncherry1651]

I can't wait see turbo and exaust 😁

[@bruceleeroy872]

You are a freaking Diesel guru! I love watching your videos!

[@BOVMAN55]

Hands down, one of the best video sites on KZbin. Interesting and informative, I look forward to every one!

[@2flyabove]

I love the melodic rocker arm sounds and movements of your engine. It's impressive to see the mechanics of it work without the valve cover being on.

[@kaulincurtis9665]

Diesel knock is a really soothing sound.

[@terryharleyrides6109]

Great job, I’m super happy for you and graduations.

[@papasteve215]

I was a Detroit diesel mechanic for about 20 years beginning in ‘74 and 6-71’s were my favorite. Easy to tune and set the rack to the governor. Great engine.

[@jiveturkey9993]

To my untrained ear@4:33 sounds like that thing is idling absolutely perfect.

[@willrobbinson]

Diesel motors in all there variance ARE the workhouse of the modern (current) world we all live in, if all these engines stop now just imagine what WILL happen , YES I know they are polluters ect but they are the only major mover would wide. time will come with better motive ideas ect & welcome them until then well still here & lov the diesil engine sound ( work horse of the would)

[@carrolannethompson3947]

Thank you! That was really awesome! Congratulations!!

[@neonhomer]

Something just musical about the sound of a 2-stroke Detroit... I've been wanting to put a 6v53 in my Jeep... But the motor probably weighs as much as my Jeep!

[@Newcumpas1]

I have learned a lot from your videos and I just enjoy watching you work. Please remove your ring when you are working on engines, hate to see someone else loose a finger to a direct short.

[@richardgreene3460]

Scott...You give me the incentive to get to the shop each day & do some wrenching! I'm currently working on Range Rover Classic and a turbodiesel Mercedes. I enjoy your "REAL" videos! Thanks for the inspiration!

[@bigassfordsd]

man, detroits are awesome

[@phooesnax]

Engine sounds great. You got a ton done.

[@oldflatbeder3218]

I'm a cat guy, always been. But when I heard the Detroit two stroke being tuned to an idle it was talking to me. May you have many miles of fun.

[@br1022]

Looked like you still have a leak at 19:15 in the video. Bottom curb side of filter dripped. I would also bend the positive alternator lead back away from the alternators case as it is very close and would cause big issues if it should touch.

[@siaripop7]

I can't believe how nervous you were at the 1:40 mark as you started the engine, you were shaking all over!

[@nickraschke4737]

Not helping my plan to walk the dog! Enjoying this series

[@BusGreaseMonkey]

Walk the dog, this will still be here when you are done

[@soillife1]

Awsome with the new fuel lines and filter.

[@malcolmmcleod9784]

Cicadas in the background? Some noise every vid at you're place lol great channel more more I have learned heaps about GM 2 strokes not scared of them anymore great engine

[@malcolmmcleod9784]

Sorry traffic noise lol got it figured

[@honeyman71962]

Also being new to your channel I would very much like a tour of your bus to see what you did and maybe get some ideas for a future build of my own thank you again.

[@SomeGuyInSandy]

I think it sounds a bit throatier! Nice work!

[@wallacegrommet9343]

Sounds deeper, lower pitch....power!

[@docholliday3150]

Enjoy all your videos and buses are not even my thing. Would you consider adding an ending comment to each video instead of just an abrupt cut? Just a respectful suggestion. I love to see anything old and mechanical restored or repaired. Keep up the good work. doc

[@BusGreaseMonkey]

Sometimes i do. Tune in tomorrow for the next part ;) Long tiring day so you get to be continued.

[@timbroderick3831]

Have you considered instead of running idiot lights to the dash (I know you said you weren’t) for the new fuel filter to just install idiot lights next to the fuel filter? I know you’ll have the engine running at times while at the back of the buss. That way occasionally you would see if you had any fuel system problems if the lights were on while servicing in the engine compartment.

[@BarnyardEngineering]

Ok, I was wondering how you were going to prime the fuel system with a prybar... All this time I thought Detroits were supposed to lope at idle... Either you're doing something wrong or everyone else is LOL.

[@markhall7646]

Favorite sounds- the 671 idling and the cicadas. Looks like a Leece Neville alternator on board?

[@TylersNeighborhoodGarage]

Good job, now you gotta put it to work visiting clients...earn it's keep!

[@wallacegrommet9343]

Consider getting a new clear filter housing? No clear fuel bowls allowed on an inboard boat engine per ABYC standard.

[@16B9]

Why is that??

[@Mullay2]

This was a great series of videos, Scott. The bus sounds a lot throatier now with that 4 valve head installed.

[@rodneyhendrix1292]

Scott, You're wife's hands look so ladylike and CLEAN,but that she doesn't hesitate to get in there and get at it = Good partner's........now you can say the bus is TIRED...🤣

[@thomasandre4728]

I've been waiting for this

[@ericdee6802]

Awesome job Scott,sounds great. Can't wait to see the turbo installation.

[@peterg.8245]

Those tires look like an obstacle course, you wanna use the bathroom you better get your knees up!!!

[@danmartin9558]

I would have thought you would have used a2 air & fuel line with aeroquip reusable ends.

[@KilgoreUSA]

Now I having my second beer. This is not good.

[@bogiewheelman71]

The beer ?

[@MrMusicluv69]

Thank you camera lady:)

[@donkmeister]

That sounds insanely smooth for an idling diesel. I love the two-stroke DDs.

[@irongoatrocky2343]

is it me or does Lenny sound a tad bit different/better at idle w/ the 4v head? 55555555

[@colmornane5684]

Hi Scott, Firstly great videos, I love the 6:71 Detroit's, we run two of them on our old Rail motors, here is a link if you wish to see them. kzbin.info/www/bejne/qZfIoomffMmAf6c In changing your fuel lines it looks like you have replaced the return line fitting in the head with a new one. I always understood that fitting holds a restriction that provides the fuel pressure internal to the engine. Just checking that your fuel pressure is ok. Keep up the good work. Regards Colin Kelly a Fan from AUS.

[@jamespn]

Nice job on the cylinder head install and the reconfiguration of the fuel lines. Can you get a clearer replacement globe for the fuel filter that hasn’t yellowed?

[@olspanner]

At 19.16 saw a leak from the underside of the filter???

[@BusGreaseMonkey]

I spilled some filling

[@LegendsRacer37]

Sounds nice, power lead on that alternator looked a bit loose.

[@LegendsRacer37]

Sorry, should have watched the whole video first, you tightened it ;-)

[@MC-ft8zv]

what's bubbling between cylinder head and block around the 3.20 mark?

[@BusGreaseMonkey]

Coolant i spilled vibrating

[@briananderson3801]

Have you ever had one start up while baring it over ,,,,I have had a ratchet on the front and it started ,,,also love it when they run backwards,,13 speeds in reverse one speed forward

[@shreddder999]

Sounds great! (How about a burnout for the camera?)

[@billsmoot67]

you'll be merging on the highway like you're coming out of pit lane.

[@davidepperson2376]

So yeah, that is my question - addl' valves so it'll breather better? More fuel efficiency? More power? More Speed? All of the above? Or none of the above until the turbo is added?

[@Patriot1776]

​@@davidepperson2376 With how diesels are compression ignition, you need more air in order to ignite more fuel, so better breathing allows you to put in larger injectors because there is more air to ignite the larger fuel charge to give you the more power you're after. Turbocharger though really wakes things up as you can guess, as now you can run injectors much, much larger than would be safe otherwise without it, and 4 exhaust valves per cylinder allows it to exhaust all the extra air the turbo's cramming in.

[@Hawkers02]

@@Patriot1776 all the valves are exhaust on a Detroit. The intake is in the middle of the cylinder sleeves

[@tribeofjosepht.i.community9977]

Sir, you are an artist fixing these beautiful diesel motors. I sure enjoy watching your videos, because how you explain in “layman’s terms” helps greatly for one to learn . Thank You and God bless You and Your Business .

[@davidepperson2376]

A few questions - addl' valves so it'll breather better? More fuel efficiency? More power? More speed? All of the above? Or none of the above until the turbo is added?

[@SkrixFox]

@11:19 Great! Now I gotta go pee!

[@ronaldmorrison6013]

😁

[@mikeekim1972]

Nice tune.

[@KPearce57]

The new plumbing looks a $150 better.

[@gregmurray1918]

Sitting here listening to you set the idle on the engine made me realize that I need a white noise generator that sounds like a Detroit Diesel at idle. I’ll take 10% as royalties.

[@bababooey7576]

Starting at approx 3:00, the most glorious engine idle sound. I could listen to it for hours.. I have my surround on and turned up the sub a little. I'm in heaven!

[@andrewsmart2949]

they make more power with "N" pistons than 4 valve conversion

[@wi11y1960]

She sounds throatier. Maybe a better powercurve?

[@Captain4life3]

didn't know you have two left hands. lol always good to have a loving wife

[@thefrugalsnowbird4098]

Having a 2-year degree in auto tech (1978) from a time when points and condensers where the norm gives me an appreciation of this mans archaeological (he digs them out from the ground) motortech.

[@CC-mf4kl]

Am I the only person who loves the smell of pipe dope?

[@samuelsamsonian5832]

I like watching the valve "fingers" do their thing, its an interesting design.

[@Shane-Singleton]

Samuel Samsonian big EMD locomotives used basically the same design scaled way up. Think of instead of an 8v71 having a 16v710. That’s 11,360 cubic inches of 2-stroke GM diesel goodness. The turbo charged versions of those sound absolutely amazing. A rumble that will move your soul.

[@ShainAndrews]

Rocker Arms, but valve fingers does have a nice ring to it. Rocker fingers is better IMO. Running full tilt they are certainly rockin.

[@GGNoble47]

@@Shane-Singleton , 2, 12v567 EMD. Were my baby's while in the Navy. LST-1150. On one tour (Vietnam) did not shut them off for 257 days.

[@kaulincurtis9665]

Very interesting they use one rocker arm to operate a fuel injector for each cylinder. I think it's so innovative how injection timing ties right in with the cam timing like that on this engine.

[@jamesshanks2614]

When I worked for the railroad we used to shut the down once per month for maintenance. Since I retired the railroads both GE and EMD have gone from a 30 day maintenance schedule to 90 days and with computerized locomotives today when the locomotive is isolated on the control panel shut themselves down so long as air pressure and engine temperature are maintained to operating norms will restart themselves as necessary to maintain air and temperature. Horsepower is from 1000 to 4500 horsepower. Bot GE and EMD do it the same.

[@danielsmith9500]

That is the exact filter I run on my Detroit. I think the new filter from napa ( in bulk package ) is 8 bucks. I love running it

[@skwyrz1]

About time that big fkn diamond ring payed off,Yeah I saw it.

[@BusGreaseMonkey]

Scott Squires haha

[@wallacegrommet9343]

The decrepit hoses caught my eye and I didn’t have long to wait for you to take action

[@honeyman71962]

I am new to your channel and really enjoying the post that you have made thus far that I've been able to see but I am curious as to exactly what you do are you a mobile mechanic a traveler and do mechanic work on the side I'm a little confused and if you could enlighten me I would greatly appreciate it but I am still going to continue watching your post because I find them to be incredibly interesting and I have always loved buses and diesel engines thank you in advance for your response God bless you and I hope you have a wonderful day.

[@OfficialNakatsuMegami]

Ah, those are the taller 12R22.5 tires! Those should make the bus look really nice and run a lot better on the highway for those long open road trips. Cant wait for the test drive and your thoughts after its all done.

[@shreddder999]

I'm worried that there will sap some power if he is already struggling on some hills

[@jerrykinnin7941]

Taller tires will definitely make it long legged. But how much taller are they over an 11R22.5. Will they run at full lock on steering or suspension dump.

[@carytowncat]

Goodness that sound. Mmmm. Does something in the primal part of my brain that makes me feel like everything is ok.

[@castirondude]

6:40 my bus actually has a vacuum gauge on the dash to tell you when the filter is plugged. It actually just said vacuum, took me a while to figure out what part of a diesel engine would pull a vacuum....

[@TheObersalzburg]

The installation of the filter with the new hoses looks great. And that electric aux fuel pump looks like an old Stewart Warner? They were noisy but super dependable.

[@coenvanwyk1]

You mentioned that you used to have a filter for vegetable oil. Could you share your experience of that journey please?

[@thomasandre4728]

Sounds awesome

[@timsatori]

So how was your 5/8 of a scale wouldn't bust replica going you getting close to being ready with it I should be pretty awesome

[@dcallan812]

That started up without any problems. 👍 I was just thinking what would the guys who built the engine think of it now. I dont think they would expect it to be still running and working so well.

[@RexCars1]

Good Deal.. Looks like Lenny is almost ready for some New Adventures..

[@bassface1984]

2 ,3,4,671 series are some die hard motors.Dad had a671 ran it daily for over 20 years without rebuild.Yes it did white smoke until it warmed up worn fuel injectors worn sleeves.Come to find out the serial number on the block was 00000006 sixth engine out of production. ROBERT JOHNSON gave my Dad a rebuit engine for his old one which he put on display at his shop.

[@RodneyJKemp]

Got a look at your lovely wife's diamond ring, isn't she a lucky lady.

[@alansailing1387]

A few q’s which end of the engine is the traditional front and which way does the crankshaft spin? Clockwise or anti clockwise. It looked like you were spinning the engine in the opposite direction when you were priming the fuel system. You mentioned in a previous video that the 4v heads shut the valves later, does this require a different cam shaft or is something else different? The injector timing appears to be from the middle rocker, how do you adjust the injector timing? Is there some sort of adjustment on the camshaft for this?

[@MrMopar413]

Great video that brought back some memories, I know that drill all to well.

[@donellmuniz590]

I live near an Indian reservation on the west coast. A lot of the older fishing boats still run Jimmy engines. I've found both a 3-71 and a 4-71 at their garbage dump, a few years apart. I grabbed the blowers off both of em!

[@brandoncherry1651]

can't correct my comment I'm so sleepy i drive at night but me and my nephew meet up in morning over bfast he lives with me 18....hes going to college diesel repair....i get home he's waking up...we eat breakfast watching grease monkeys vids 😁

[@WifeBTR123]

Why does the engine idle faster then slower, faster then slower at first start instead of steady idle?

[@brownwrench]

Last Detroit 2 stroke I dealt with was a 6v92 Silver with ddec on it. Ran so nice.

[@maximolopezsr9399]

Hi Steve ,you must pay special attention ,to the Air Compressor ,,Remember all those Air compressors Do pump engine Oil into the Brake System ,,also the fist Air compressors discharge hose ,

[@Mr4pete]

What!!! No white walls??

[@MaShcode]

The engine sounds quieter? Looks like my scene when I'm replacing bike tread. Tires go where there's room. Simple as that. :)

[@steverowley5257]

can you please do an 18 wheeler (with the same motor) ?

[@RJ1999x]

I've got a Chevrolet Bison with the 8v71 he can do if he comes to Wisconsin