I've heard of old timers in the field doing in-frames with nothin' but a rattle-gun and feel, so i'm not surprised. Detroits have some of the funnest wrench-access engineered in. Not many special tools for them, the manual is like "if you don't have a shop press, use a punch and a hammer" and "if it leaks, tighten it" etc.
It's so nice to watch you and Matt working together I'm so happy to watch Matt ask you questions and listens to You when you are explaining things. What a huge difference from the Trans Job video, it's awesome when a Farther and Son work together really enjoy watching these videos. Awesome video as always keep up the Amazing Awesome work Matt
Did a stack of these in the BC Coast logging camps, still hear the 2stroke joke fire up and then be the green leakers. Even factory designed with drip tubes, we put hoses on them and into a jug,
Those exhaust manifold nuts are interesting on the Detroits. Note the thread pitch! Fine threads. As you discovered, they are loosened and the manifold slides off. Be sure to reference the torque specifications on them, in the order of 23 ft-lb if I recall. Replaced manifolds on one after they were overtorqued instead of replacing the gaskets. Great video, man!
Best to slide it back in too, till it rests on the little ledges. Some people try to tighten it down with the flange overlapping them and that's a guaranteed cracked mani.
Was there a special tool to get those on and off? That would be a full time job just to get them on...and very tideous and boring...I wonder how many v12 engines they assembled in a day ?
Nothing wrong with using an impact gun to disassemble most engines or transmissions it’s the going back together that you leave the impact gun in the tool box and use hand tools to reassemble everything.
It would be awesome to see your buzzin dozen in a needle nose truck. Something from the 50s or 60s that matches that engines era. Either that or drop it in a shiny new Freightliner cascadia so people crap their pants when you start her up.
Love the new channel Steve. Looking forward to v-12 rebuild! My brother used to work on 16v-645 loco engines when he was on the USS Nimitz. They had four on the ship and used them for electrical power generation. Each had two huge turbo's and ran 3,000 hp at 900 rpm max. Btw, on your engine the numbering of the cylinders from the front is 1,2,3,4,5,6 Left Bank and 1,2,3,4,5,6 Right bank. With LH (standard) rotation, the firing order is 1l, 5r, 1r, 6l, 2l, 6r, 2r, 4l, 3l, 4r, 3r, 5l.
Yes, its different from the many automobile engines I have done. But even there there were differences. Chevy vs Ford. Chevy runs along the crank, where Ford starts right bank then left bank.
I just wanted to say that your boy is definitely a smart one, because yes, engineers design the stuff people work on, and almost always, they design it in such a way that mechanics are always left scratching their heads, wondering just what went into building an engine. I myself wonder why engineers arent required to take stuff apart, before building the same type of stuff. And just saying, I've never seen any diesel engine torn down, so this is quite a treat for me, watching you guys tear down this 12-cylinder Detroit. And the way the young guy is going, should he choose to, he'll make one hell of a fine diesel tech. I'm thoroughly impressed by his work ethic. Good job, the both of you! 👍👍👊👊
@FSC Truck Shop what you do for when replacing the heads is with some old head bolts hold in a vice then run chop heads off then slot top of bolts so can get screwdriver on them. So when rebuilding place bolts in say each corner and one halfway then holds head gasket in place then slide head onto bolts/studs so everything held in place then insert new bolts in others and do middle bolts up a little and work your way out and can unscrew cut bolts/studs with screwdriver and replace with new bolts. Do all the time with slanted engines.
little pointer for you if you have to stamp any more parts that are sided rather that stamp in full RHT- right..... LFT- left etc etc or RH / LH makes things simpler and quicker. good vids and i'm curious to see if that crack was caused by impact and if it has been repaired on the inside.
Dig the new setup steve. Always a pleasure to watch you an matt work as a team. Wish my dad did stuff with me but he did what he could an for that i love him. Keep on keeping on!!
You going to in frame it with new bearings, rings, sleeves.... yada yada? The blower assembly seemed to roll pretty nice up top there. Turbo will pick things up. Knock it up to 70 injectors? Pretty sure you want your injectors to match numbers and letters like 70A should be with 70A get away with 70B but never 70C if you can help it. If you knock it up to 70 you'll get more HP but the mileage will be slightly more expensive on the fuel but more effortless sailing. A turbo will just feed more air to everything and that's always a good thing. You can adjust the boost depending on what you want to haul that can be advantageous [little extra boost for the heavier loads helps]. :-)) So cool. You thinking Pete long hood? Can't wait to see. Ol2stroker said he would shoot you a line to help out if you want it. He's way up on these motors as he has a couple of trucks with the 12v71's now and I think he has 3 maybe more counting the trucks he already has them in. He's converted at least one from a generator application to the truck application. You seem to be doing well though. Fun eh? Detroit had blowers in their motors since the 30's... crazy eh? lol Gotta love the old Detroits. Stout motor designs.
@22:59 ish you talk about rotating the engine to make it easier to re install. But on an inframe you can't tip the engine over. There's a technique to do it for sure.
Okay watched three out of order 3,1,2, i had 8V71 swallow a valve and engine not truck ran away, in BALTIMORE, real cold, know how the city cops love to ticket trucks, I had a lane and a quarter blocked, at least 6 cops ignored my truck, it was that cold, 8V easier then 12V, I quit school math up to ten, did like you did, get a book and rebuilt it, good job Steve, pull toy here 👍
Is anyone else seeing what I'm seeing with the old gaskets literally painted to the block and heads and then the various covers, manifolds, etc. painted again after installation? I noticed this on the airbox covers when they removed them in a previous video also. That pretty much guarantees multiple oil leaks as that paint dissolves during run time.😜 *EDIT:* Those heads look like the 4V-HAH heads they use on the 6-71's (4 valve heavy-as-hell)🤣 Nice job getting that left side off without smashing your toes!😁
We built a couple of heavy engine stands that we used our shop crane to lift the engine into the cradle.. It had heavy casters on it so it would roll around plus had a horizontal rotisserie for turning the block for access..
well i see u dont know Detroit. Its my home town. I can u think the noise that thing made when the crank throw trapped that bolt head & cracked the block. Its gonna be alot of type job. good luck young man. They do look nice sitten proud in w900. 10.....5 keep on a trucken
Man!! It is always bothersome to me (an old Navy Detroit mechanic) to see people take the Detroits apart with no book or experience in those engines. How to you expect to put that engine back together, set all the clearances and oil pump pressure regulator valves if you don't understand the engine. Wishing you good luck that it don't come apart on ya! 12V71, such a sweet engine!
Hi bud just started watching your stuff love seeing you & son working together. I love any thing to do with Detroit engines . I’m in north wales 🏴 uk reagards Les
On the part where you where dealing with the wrench on the exhaust manifold, it almost looked like there was a crack on the water manifold hole near the “c” cast in the head.
A easy way to remove the liners is to use a piece of round steel bar that will fit into the air slots in the liner. You run the piston down and insert the bar into the air intake slots and bar the engine over using the piston to push the liner up.
Anybody who knows me will tell you that I’m not a fan of Detroit diesels; for me it’s always been either a Cummins or a Cat: Period! But I’m finding this v12 tear down and eventual rebuild interesting. I’ll be here throughput the whole process, and who knows, maybe you’ll change the mind of this almost 70 year old retired truck driver / part time mechanic..
Spinning wrenches indy 21st century? I’m the same....stuck in a simple time because lithium mining isn’t “green” at all. Unless this is industrial use, you have a good boat anchor. 92s with hairdryers weigh about the same with the power difference justifying all weight. Modern diesels power to weight ratios get better with time
i never realised how tedious these old detroits were to work on there is a lot of little pain in the ass parts on these maybe you should just get a c18 cat and put a mechanical pump on it and you would never have to downshift on any hill as with the detroit its still not going to make a lot of torque even with 2 turbos and pouring the coals to it
The heads on Detroits (as well as blowers, liners, pistons, rods, and other parts) are all interchangeable within the same series of engines. (ie 71, 92 series)Sides don't make any difference as everything gets adjusted with go-no go feeler gauges.
Deboss Garage have or had a 1980s GMC cabover with a badly shagged 8v92. Might be worth a look. your 12v might go in and some ancillaries might swap. They are in Ontario.
Hey Steve, I was just watching your latest video on the trucking channel and I got an idea of a conventional truck you might look at putting this monster in, I was thinking of an Autocar mind you it would have to be 1953 or older because that was before White bought them out, again just a suggestion and good luck in whatever you put it in
My God man. If you are going to work on BIG TRUCK engines get some BIG TRUCK tools. Craftsman is for home and shop. Cheater pipe okay, took you long enough. You can use an impact to remove head bolts. Do you have an impact?
Hey Steve what the hell happened to ur head? My son's was like that's cool ur son help's ya. My kid's they love helping me work on our vehicles and also my Semi. The oldest he want's to be a truck driver. And he can drive dam good. He drives the rig's around the yard and back's loads up to the loading dock's. I had a hard time taking off a manifold that was like in the video where u could not get a wrench on it. My kid's was like how they put the nut on and i am like i have no idea. That's cool u bagged them seperatly also. We do that all the time at work. And my oldest explained to the wife since i was in the kitchen getting a drink. What kind of Military Tattoo is that on ur left arm? The mechanics at the shop even me always label each part. One mechanic said he never does. Will one day I seen pop's (employee we call pop's he's like a dad to all of us) at the mechanics work area. And pop's was showing him what part goes where. My wife was like are they using the cherry picker to lift those I said yeah. My youngest son goes dad used the cherry picker to lift the back end of ur car mom. I had a metal bar to hold the picker up. It can hold it good. But u can't tell if the jack might give out. Thats cool ur family and ur mom is moving to Texas. Cause we live in Dallas Texas.
@@fsctruckshop6537 dam sorry about the sunburn my youngest son thought ur son rubbed oil on ur head. That is why my oldest son thought about the tattoo. I said it look's like a Army tattoo. . How do u stay cool during the summer time in the sleeper?
