Rebuilding a CAT 3406B Cylinder Head - Valve Job - Resurface -  

I could watch this guy work all day. Good to see someone do this work that actually know his job well!!

The shorts are gonna bring a lot of people to your channel. Almost 5k subs in a day!

I like that in everything you do, you consider your customers advantage

This never gets boring, this is Pure Quality content right here

Love your videos and I appreciate family owned business! You folks, and those like you, are the lifeblood of this country - thank you!

Those shorts really do work my dude. I'm a sucker for machining channels just subbed.

I got a buddy who does this for a living with high performance motors. i can sit all day and watch what he does or anyone doing this kind of work. the kind of stuff i'm interested and never gets me bored😊

You guys are amazing artists and great humans. I love watching you and your dad work. Love from the Middle East ❤️

im super impressed by your work ethic, and chilled vibe, precise skill. we do this jobs in here but its not looking as clean, thanks for the inspiration to get better and better

That should be one damn happy customer. Lovely work.

This is very addictive,I was always searching for this kind of machining content,keep uploading

These are cool videos. They illustrate the amount of effort and knowledge needed to have engine work come out right.

Watching this video was like watching a job in our own workshop here in the UK. It's great to know that the techniques used are the same over there as over here. I'm about to embark on filming some jobs for youtube, but mostly based on smaller engines. Apart from the one stupid comment you have on here, i like to think that automotive machinists are usually pretty good towards eachother. We share jobs with several other shops here and all learn new things from eachother 👍 Really happy to see you gaining subs so quickly, you deserve it 😎

You just earned yourself a sub! Fantastic attention to detail and quality! It’s really nice to see there are still some really good machine shops out there, keep up the good work!

Thanks for posting this! You never know what shops actually do behind closed doors and certainly most don't take pride in their work.

While I won't be able to use your services (I live in Germany), I really like this content. To be honest, I like the small channels the most, because they are often just as good as the big ones, and you feel like you are the part of a small elite crew xD

I rebuilt CAT small and large bore diesel and natural gas engines, In my 25 years plus hands on experience, I have had to watched the best cutting edge updated precision engineering to machine the cylinder head ever seen. No one have that set up thru out in Pakistan at all.

You are bringing back memories of my years as a Cat tech. Those broken studs were brutal. Especially if someone hacked them before you. As you found out the cat studs have a taper at the inside potion that will come out if a square hole is drilled. We used heli coils when possible and the bigger cat inserts if the holes were too big. All while thr head was on and sometimes coolant still in engine.

Thank you! At the end of the video, you thanked everyone for watching and said that you appreciated it. I want to thank YOU for your time recording, editing, and posting these interesting, high quality videos. Almost documentary quality. Maybe you do talk and move through the video a little too fast sometimes, but I'm sure your videos will only improve with time and experience. It's also great to see a son working with his dad and appreciating his experience and humbly accepting it. Something rarely see these days. So, for myself and I'm sure many others watching your channel, THANK YOU !!! Regards.

I enjoy the work produced out of your shop and the time taken to film and crank out content for us nerds. I found a good shop in southern CO, but I’d bring my engines straight to you guys based solely on the content you put out. Referrals are one thing, looking over your shoulder is another.

Good job checking the valve protrusion/recession on a diesel head. Some shops don't understand the importance. I used to mix and match the valves to the chambers to try and average out the depths. Great video!

The beginning, when doing the guides, a machine shop here cracked my guide housing smh Leaked oil into the chamber when motor is running. All that compression is pullin oil in between the guide and wall into the exhaust port. You’re doing good work bud👍🏼

Thank you Brother I learned a lot. Y'all do a whole lot of hard work and thanks for sharing. God bless you and your family and shop.

As a car enthusiast and cnc lathe and mill operator I love the videos, best of both worlds in one 👌🤙

Gorgeous work, a lost art but a beautiful craft nonetheless. I’d love to see some of those engines started up after your client reinstalls them. I bet they’re 10x better after

On Cats, guides and springs are pretty much a given every time.

Is it wrong that i love both red, and yellow engines. 6NZ, and N14 and the early ISX are my favorite. Keep up the great work..

I want to add to my yesterday comment - how about all these Legendary Engines from every manufacturer AND expose the manufacturing weakness & how to Correct it thru machining

Kick ass repair job, And a HUGE +1 on those spade style incerts. Having had issues with a Heil-Coil repair in a head bolt that CAT never told me was bad on a C-15 we had rebuilt. And went threw 3 head gaskets in less than 10 days. You can say I'm SOLD on them. Yes there expensive and maybe not the best option on every repair. But I can tell you this, After we finally put the correct thread replacement in that engine it went another 1.3 million miles with out any trouble.

I used to run a big vertical mill in a pneumatic/hydraulic cylinder factory. I used to run that machine all day and dream about running it half the night. LoL Nice clean surfaces you machine. Top notch.

When I worked in a diesel engine shop we did complete engine rebuilds, in frames and had a cylinder head shop not only for our rebuilds and in frames but as stocked product. We specialized in Mack and Cummins but did plenty of Caterpillar, Detroit, and International builds. We also did transmission and differential rebuilding, had an injection shop, a parts counter, and we're a full repair shop. All that being said, every head got new guides, new seats, new valves. Every head was surfaced. Certain models received new springs or retainers etc. But I can assure you we never measured original valve guide clearance. Our heads were reconditioned to an as new condition with a warranty. Unless it's a low mileage engine or the head was recently rebuilt then the guides will be worn, guides cost a fraction of the labor to pull the head, it just isn't worth the savings to not replace them.

Nice work!! Fixing that broken stud was just icing on the cake 👍🇺🇸

Just found your channel today. Love the craftsmanship and attention to detail. Keep the videos coming man!

Nice work man. Good work on bring us in on the details as you were doing each operation. Not as easy as it looks to make RU-vid videos. Keep up the good work both in the shop and with making your videos. All the best. Peter.

I love how clean your shop is kept

Great job on the head and broken stud. I use carbide 4 flute end mills sometimes or left handed carbide twist drill bits. Whatever it takes. Beautiful Serdi and end product is awesome.

My first wife was a good at head work Always a finely polished product at the end

this is incredibly satisfying to watch. the shorts brought me in here so keep that up! you earned a sub.

Hi guys, your videos,no matter how boring they seem, are very interesting to me. I'm a retired auto mechanic and I spent some time in the automotive machine shop in the military, but never had a chance carry on the machinist trade.

Awesome video man! I’ve always wanted to work in a machine shop so being able to have that experience through your videos is amazing. Please these videos coming! Also love the fact that your working with your father.

Excellent work,, I still remember engineering the RHD (yes, the steering wheel in on the other side here in Australia) the CAT3406B, 3406C & 3176 engine installations on a Freightliner FLC112 way back in the late 80's / early 90's

U've asked what we would like to see most & the five selections actually what we really want to see is a PROFESSIONAL balanced & blue printing along with align boring not on the crack but crank&cam - decking head to block without loosing compression ratio + the plus & minus of polishing head chamber oil galleries, matching in tack ports to head ports etc etc this all done to 50's - 60's - 70's famous engines of these eras the purpose to increase efficiency & performance - think U get the idea

That air hammer frickin yeeted that valve guide at 1:32

Man I wished you all were located in Colorado!!! Awesome work you and your family do thanks for sharing 👌

Keep it up!!! Always love to see machine work. I work with my dad in a small shop as well.

New to your channel. Been watching some of your other videos and i definitely like the longer videos. My "Dad" was a machinist for 35 years he died at age 55 i only met him twice so it's cool to see some of the stuff he did. I turned out more like my uncle and am on the rebuilding side of engines. Definitely looking forward to watching your videos.

Valve seating process has certainly changed since I did it at college doing mechanics

I find with the serdi that sometimes really slow will cut through super hard seats better. But sometimes you just have to play with speeds to get that perfect finish.

That head is huge! The surfacing is very satisfying on that initial pass, almost like power washing!

Ive seen a lot of youtube fixers say "We sent the head to the shop". This is the first time ive seen what that entails. Nice job.

Y’all have the advantage of machine tools to help remove broke bolts. Caterpillar makes a tool to help drill out broken bolts and stud on the exhaust ports. They actually make couple different ones, and they are designed to fit multiple different Caterpillar engines. It’s a machined plate that stamped what engine model with bolt holes, harden bushing, in a few different sizes so can be step drill.

I like this channel Very straight forward and calming

What a monster head, very nice job.

You guys are awesome. Thanks for the wholesome and interesting stuffs.

Whenever I order those guides with the seal barb i always order a few extra. Messing some up is inevitable, and I even have the cat tool for installing them.

This relaxes me!

Glad to support a local family business!

You should look into e-z lok. Their thread inserts are perfect for CAT exhaust stud holes. They have different OD thread sizes if you have a need for a thicker insert wall. Great video man. Keep it up.

Very smart to allow tap to slip instead of snap in the head and to finish by hand.

My head is in the shop here as I type. I hope he is as thorough and great as you guys!

Love the content brother! Stop screwing up n stressin ur dad out lol jk it’s nice to c a family working together like this.

These videos are so theraputic and relaxing

You guys do excellent work which is extremely hard to find anywhere anymore. There is one good shop in my area and 10 other shops that need to be run out of town. I spent the biggest part of my earlier life doing machine work and moved on to other things. As I approach retirement age if it wasn't so expensive to outfit a shop I would do exactly that as I know I could stay covered up with work. The only good shop in town is always 3plus months behind. Should have thought it over a few years ago and started stocking up with equipment before now.

If I lived near you I would volunteer to help. Its nice to see quality workmanship.

You are working on my favorite engine

No blue grease to keep it from rusting? 😂. The 3406B is a rare find these days. The handful of guys that I watched make them sing by working their magic on the pump all retired years ago.

I've got an old Ford 390 FE block tucked under a workbench that I bet weighs less than that head. Lord that thing is big!

Nice work!! And The eye fir details and explaining! Good to see always wearing safety glasses....I live also with those!! Seen couple of men with one eye left just because not wearing safety glasses and loosing an eye because of shattering piece of metal of a part , In 2 cases without hammering or pressing hard to get part in. Hard parts sometimes launch pieces of them with bullet speed because of internal tension and only very minor blow is needed!!!

Love watching your stuff

Piece of art...

Next time you get a Cat head in to change valve guides, blue or vac check the valves before you cut them, Cat heads are the only head I've ever come across that blue in/vac seal every single time after changing guides, most other heads won't do this. I'm not saying you shouldn't have cut the seats by the way, I just think it's interesting that Cat heads are always like this.

I just resurfaced the head for my 96 tacoma in my school's machine shop today, definitely didn't have as nice of a finish at that CAT head but itll do

Provided your in side say (guestimated) 0.005" on the skim I think this is acceptable. And a head gasket should squish a fair amount. Nice finish too. I have to do stuff manually. Look at that fancy machine shop. Props too you guys

Awesome!!! Nice work my friend!

Fun to watch, nice job👍👍👍👏🏻👏🏻👏🏻👏🏻

I eventually want to continue my career machining engines. Think that would be awesome and challenging

I’ve done a few of these back in the day at the Cat dealer.

That's a 3406C cylinder head. Round exhaust ports, and valve stem seals. 3406A and B had no stem seals, and square port exhaust.

That thing is massive

Ive had to pull seals back off because i forgot to put the valve spring seat on first. Dont recall what it was on but i think it was an 8v71 or a 92.

Brilliant Video..Very informative..well explained..customers can see what care a attention you both take! quality

1:26 That's typical.The reason why back in the day I made a tool for it on the lathe,with the part driving it in resting directly on the guide instead of that thin top end of it,and with the right height so one doesn't need spacers when pressing it in.I used to fit them in on an vertically ajustable sliding hydraulic press so the chance of happening what we saw is minimalized to the maximum.

Awesome video i like the complete explanation of the steps your doing im a gear head myself and have an appreciate the work you guys do

👍💯Great Job! You should be very proud of yourself also be very grateful and thankful for what your father has passed on to you. Things fathers teach their sons are Priceless in this case he taught you Priceless things also away to provide for yourself and your family forever.

Those taper lock exhaust studs are a pain in the ass. Amazing how many of them these cats like to break.

Very nicely done!!

I approve of chucking taps. I build equipment and I’ve had best results running the taps in a chuck.

Brilliant work

Such professional work.will follow. Takes me back.

You think of everything! I will your vids always now.

Great video mate, thanks 😊

It is awesome to watch someone who obviously knows what they are doing using precision machines and precision tools and equipment. It’s like watching an artist! Thank you for your posts. I always look forward to more.

Comes up on my recommended list. I end up down a rabit hole of Machining Videos.

Really enjoyed watching .. You guys have a lot in of experience bigg respect.

Pure craftsmen!

Enjoy your videos. Does the new head gasket need to be thicker by the amount machined off?

This is the type of work that most shops keep under wraps to gouge prices!

Excellent work

Love the way u guys work ❤️🤍💚

Left hand drill bits burrs picks and last resort blowing them out with torch all sorts of fun