your weld/crack repair and thread repair are my favorite, don't get me wrong, i love learning about valves and stuff, but there is something so satisfying seeing you masterfully fix something that most cannot. Cheers!
Wahoo, that was awesome. I have a set of 03 ls 862 heads that when I can get to it. I want to cut up for a ford 300 6 cylinder head. Thanks for your insight into the welding.
you got great talk about what's being done vibe... many dont realize how much value that sorta skill is.. its the difference in having what u do for fun in ur spare time double as something that equates transferable knowledge... personally ive always found these over shoulder POV vids to be the next bedt thing to being able to " :fly on the wall" shadow around a shop...
Great videos. No bs just the way it is. Worked in a head shop years ago. It's not magic it's time skill and hard work. These videos are a fantastic insight to what goes on in the real world.
Absolutely I worked in a machine shop, when I was going to high school, part time. The company would remanufacture caterpillar diesel engines . I seen 12 cylinder blocks being welded up, where a con rod went thru lower block! Heads with cracks being welded up. All engines came with warrenties, just like new!
I come across one of your shorts and I have to say this or some of the most satisfying videos to watch, I’m no machinist but I’m a auto technician so this stuff is fun to learn about.
No the crack was caused by an assembly error. And was never successfully repaired by the last guy that tried. The core plug hole was just the result of a previous repair attempt. Happens.
Just a heads up , don't use permanent markers on aluminium as the bromides and tints can cause etching which can cause cracking. You need a certified marking pen ,this was noted in the Philippines when repairing aluminium patrol boats
@jackdaniels2657 he was more than likely in the u.s. military. We had bases there until very recently. If you were paying attention, he said "patrol boats."
@@jamesarmstrong-jones5082funny thing is I use to work in a burn center and sharpie brand markers are considered ok for sterile procedures. The outside of the marker is not so they wrap them in blue sterile field paper and sterile masking tape.
So glad to come across this channel and see people that can use their brain to fix things instead of throwing it away and buying something else. And as you said those heads are worth $7,000 so if you went to sell them you got money in the bank.
@@EngineRehab You should look at that documentary on the Chrysler turbine car, Jay Leno's blew some part out of the turbine a regeneration chamber I think and they can't figure out how to recreate it. I think they know how or they have the plans or something but they can't recreate the technique. Take a look at that If you can figure out how to do that you talking about making some money or prestige or both actually. You seem to be an extremely talented machinist they might just need somebody like you that thinks outside the box a lot and has to fix things with what you have.
I used 4047 tig fill rod for this softer better wetting action , as for the welder , ever last EXT 255 great welder or miller Synchro wave 350 if you got the money
That was really interesting, thank you for sharing your process with us. I might have missed your explanation, but what does the peening process accomplish? Does it help to relieve tension introduced during cooling?
I didn’t go into details in the video, but it adds density to the weld and will help reduce any porosity too. You can tell the difference when machining. It does redistribute some of the stress in the casting as well. In fact you can take some warp out of a really overheated head by peening it all over with a blunt pointed chisel.
That's 100 % worth it. I've probably spent quadruple that amount of time repairing rare cast iron stuff, or cast iron stuff that I did a TON of welding and port work on. Love Your vids man, some of the absolute best Auto / Machine work content on this platform. Edit: Also, GREAT job on the repair!
I just started watching your channel. Question - Did older engines built 50 years ago and longer just not have the tolerances and materials to last? Always wondered about this. Thanks for your channel.
The first 10 seconds it looked like the crack went all the way around to the right, just what I thought maybe the camera could see it better than the eye , ?
So now the hole is welded up and the head bolt hole fixed, are you going to shave these heads and reassemble rocker gear, or was this just to show what you can fix?
There’s holes on both sides. It means that I made the head that would normally fit on both sides fit on only the drivers bank because of how I did the repair.
Man shit is getting expensive, $7K for heads, I can see why you would fix them. I only have a basic knowledge of machining and a fair amount of welding experience but I don’t know why the peening was necessary.
Why not just MIG it? Also, I used to 'try' to TIG with an old Miller dial-arc. 60Hz (just like the line) and 50/50 penetration vs. clean. UGH! I'm just not skilled enough. Switch to a Dynasty 350 - and 120 Hz became my friend. The arc actually goes where I want it and the tip doesn't ball up. Lanthanated tungsten! I have a pulse MIG which is like controlled spray welding - again, the aluminum goes where you put it. You don't have to weld in the flat with that.
Discontinued aftermarket heads with an aftermarket port, receiver grooves. $2000 in valves and springs and set up for a special rocker system. It all adds up.
You really neeed to heat the whole head in an oven then weld /reheat before it gets cold then weld repeat. Then cool it off slow in an oven like Min 4 hours slow. Or you will build internal stress and it will fail. probably why the first repair failed.
I've done a lot of racing engines. While you can repair aluminum, I don't think it holds up in extreme use. Since the point of racing is to cross the finish line, after a few failures, I sell the cracked heads or blocks to someone with a small budget that thinks he's saving money.
Depends on who your clientele is. Maybe amateur drag racers will buy that. They run stuff till they have to sweep it off the track. The higher class racers drag race oval track road race dont like failure. One of your fix it and save them money jobs fails. You will be a lonely boy. @@EngineRehab
@@tomhutchins1046 thats a different situation, parts are disposable. Engine programs change. They’re definitely still doing extensive repairs on their castings.
Very worth it. I used to live for fixing things others wouldn't attempt. Love it.
your weld/crack repair and thread repair are my favorite, don't get me wrong, i love learning about valves and stuff, but there is something so satisfying seeing you masterfully fix something that most cannot. Cheers!
Wahoo, that was awesome.
I have a set of 03 ls 862 heads that when I can get to it. I want to cut up for a ford 300 6 cylinder head. Thanks for your insight into the welding.
I’ll do my best!
Hi Josh: Shout out for being so darn entertaining. Can’t and don’t believe you didn’t have formal training. Very creative approach to your repairs.
you got great talk about what's being done vibe... many dont realize how much value that sorta skill is.. its the difference in having what u do for fun in ur spare time double as something that equates transferable knowledge... personally ive always found these over shoulder POV vids to be the next bedt thing to being able to " :fly on the wall" shadow around a shop...
JAMSI sent us over here this week instead of loading their own video.
Glad I stopped by
Glad to have you!
Wow, awesome work! There are people who talk and then the rare ones that do! Many would have scraped the head.
Great videos. No bs just the way it is. Worked in a head shop years ago. It's not magic it's time skill and hard work. These videos are a fantastic insight to what goes on in the real world.
Absolutely I worked in a machine shop, when I was going to high school, part time. The company would remanufacture caterpillar diesel engines . I seen 12 cylinder blocks being welded up, where a con rod went thru lower block! Heads with cracks being welded up. All engines came with warrenties, just like new!
I come across one of your shorts and I have to say this or some of the most satisfying videos to watch, I’m no machinist but I’m a auto technician so this stuff is fun to learn about.
Love it! Glad i found you, i have been enjoying your videos thoroughly and i look forward to the next one Sir
Welcome aboard!
Nice job,, thanks for sharing the settings and materials used.
Very nice machine work! I really like these videos, lots of knowledge!
BTW, when you said "Pretty OK" Understatement. Perfectly OK :)
Solid work, mate. Another JAMSI follower sent here, subbed and looking forward to scrolling through your other vids👍👍
Awesome workmanship and thinking on the fly.
Thanks 👍
Looks like someone welded up the core plug hole for some reason. Think that may have caused the whole cracking issue?
No the crack was caused by an assembly error. And was never successfully repaired by the last guy that tried. The core plug hole was just the result of a previous repair attempt. Happens.
actually often, core plugs are welded up on boosted cars to prevent being pushed out and water down the tires.
Just a heads up , don't use permanent markers on aluminium as the bromides and tints can cause etching which can cause cracking. You need a certified marking pen ,this was noted in the Philippines when repairing aluminium patrol boats
Na it'll be fine. Just buy a new head
The Philippines don't got good technology and are u hiring welders or people from home Depot
@jackdaniels2657 he was more than likely in the u.s. military. We had bases there until very recently. If you were paying attention, he said "patrol boats."
Idk about that, sharpie is considered fine for aircraft sheet metal repair. Maybe boats are different
@@jamesarmstrong-jones5082funny thing is I use to work in a burn center and sharpie brand markers are considered ok for sterile procedures. The outside of the marker is not so they wrap them in blue sterile field paper and sterile masking tape.
I found using diesel on aluminum can give a really nice finish.
So glad to come across this channel and see people that can use their brain to fix things instead of throwing it away and buying something else. And as you said those heads are worth $7,000 so if you went to sell them you got money in the bank.
Used race car parts don’t tend to hold their value.
@@EngineRehab You should look at that documentary on the Chrysler turbine car, Jay Leno's blew some part out of the turbine a regeneration chamber I think and they can't figure out how to recreate it. I think they know how or they have the plans or something but they can't recreate the technique. Take a look at that If you can figure out how to do that you talking about making some money or prestige or both actually. You seem to be an extremely talented machinist they might just need somebody like you that thinks outside the box a lot and has to fix things with what you have.
I used 4047 tig fill rod for this softer better wetting action , as for the welder , ever last EXT 255 great welder or miller Synchro wave 350 if you got the money
Thank You Sir for this great tutorial !!! ... your demeanor is a hoot !!! ... Amazing Work Sir
Nice job even if you was just experimenting a fix is a fix 👌✌️👍
It came out great thank you!
That was really interesting, thank you for sharing your process with us.
I might have missed your explanation, but what does the peening process accomplish? Does it help to relieve tension introduced during cooling?
I didn’t go into details in the video, but it adds density to the weld and will help reduce any porosity too. You can tell the difference when machining. It does redistribute some of the stress in the casting as well. In fact you can take some warp out of a really overheated head by peening it all over with a blunt pointed chisel.
@@EngineRehab thank you for the information, that makes excellent sense! I genuinely appreciate you taking the time to answer
That's 100 % worth it.
I've probably spent quadruple that amount of time repairing rare cast iron stuff, or cast iron stuff that I did a TON of welding and port work on.
Love Your vids man, some of the absolute best Auto / Machine work content on this platform.
Edit: Also, GREAT job on the repair!
Good job man
Thank you!
Very cool sir. Really enjoying your content 🙂
Guarenteed its a heat stress crack from welding. They should of heared up the whole head to relieve stress before welding
And kept hot and cooled down slowly
U pulled a absolute beast mode on that head
I have a feeling this guy REALLY know what he is doing 😁😁
I just started watching your channel. Question - Did older engines built 50 years ago and longer just not have the tolerances and materials to last? Always wondered about this. Thanks for your channel.
Parts are better, machining practices are better. Engines are less crude.
great job and lots of patience.
The first 10 seconds it looked like the crack went all the way around to the right, just what I thought maybe the camera could see it better than the eye , ?
If you ever get the time to try it, use isopropyl alcohol on aluminum to get a mirror like finish when machining. Really cool video my man. Much love!
What's the reason to ping the welds since you were cutting it anyway? Just less cutting?
what if you peened it as you were building up the hole?
Appreciate the explanation. Subbed here
Great job
Red Nick Fix I FREEKING LOVE IT
Well done sir. Subscription earned
what rod 5356???????????????i use a air co water cool 350 torch
Noticed you don't sharpen the tig tip..nice
Did you see that Chris Razor video that Steve Morris did? Very interesting to the crappy garage welding that I identify as 😂.
Sweet repair
So now the hole is welded up and the head bolt hole fixed, are you going to shave these heads and reassemble rocker gear, or was this just to show what you can fix?
I still plan to remachine the deck and redo the valvejob.
Fabulous, looking forward to watching that too
What burr are you using to grind out with?
What kinda 7,000$ cast ls heads are they?
Excellent work sir, we’ll worth it!
Good job👍
Nice job
At least they were not cast iron heads you had to fix.
Verry nice job
I can’t find my previous comment. If I offended you I’m very sorry sir.
You did a awesome repair on the aluminum head.
Didn’t delete any comments but I think we should delete this one just on principle.
How did you exactly pressure test or seal up the head to pressurize it???
The heads were bolted to each other with a gasket and i fed regulated air i to them thru the water temp sensor port.
@@EngineRehab I ; as a welder; enjoyed your video
@@EngineRehab I’m up here in northeast Pennsylvania area. Where you from ?
Its like magic! Ty
Does this mean you have to drill and tap holes on the other side of the heads to bolt parts up?
There’s holes on both sides. It means that I made the head that would normally fit on both sides fit on only the drivers bank because of how I did the repair.
@@EngineRehab Perfect, one less thing to do. Nice work saving rare castings.
Holly cow. I love it !
BwaaaHaHaHa grind grind. 💥
Its in my eye
What product is in the mothers bottle?
Spray wax. Ive been playing with it for finish passes. Smells better than wd40.
@EngineRehab I have never tried that but I'll have to next time I cut on aluminum.
@@1clnsdime1 a lot of people swear by pledge
@EngineRehab never heard of that either lol. I would have never thought of trying spray wax or pledge. I currently use wd-40
@@1clnsdime1 its the wax in the two products thats helping. I will say the spray wax does work better.
Any idea what caused the initial damage?
The head got clamped down onto an o ring that fell out of it’s groove.
@@EngineRehab wow! That type of thing would have never crossed my radar!
Cool channel man.
Helium, Helium, Helium, that's the magic !!!
Only way I could do it on ac with only 180 amps
Yeah who needs a water jacket for cooling! I mean, what even are hot spots, right?!
You must not have watched the video. I do show exactly why thats okay.
@@EngineRehab I know, I was just joshin, but I suppose it didn't come out that way.
6:51, you deserve a badge.
Deputized!
7k head but how much this work cost?
Gas and time!
Should've exclude $7000 from the title. Missed opportunity 🤣
Exelent job !!!!!
Хорошая работа! Классное видео получилось! Мне понравилось! Круто Круто!!!
Man shit is getting expensive, $7K for heads, I can see why you would fix them. I only have a basic knowledge of machining and a fair amount of welding experience but I don’t know why the peening was necessary.
very nice!
Thank you! Cheers!
Beautiful
Oh the pain...
Now that they're fixed.... I'll give ya $250 for those heads! 😂
reminds me of the dentist
First time watching a video. Last time watching a video. Dude cried atleast 10 different times.
"Dont skip this step" *cracks head again*
Edit* great work tho. No hate.
More because I forgot someone shallowly welded a plug into it.
@@EngineRehab so it had been repaired before maby?
Why not just MIG it?
Also, I used to 'try' to TIG with an old Miller dial-arc. 60Hz (just like the line) and 50/50 penetration vs. clean. UGH! I'm just not skilled enough.
Switch to a Dynasty 350 - and 120 Hz became my friend. The arc actually goes where I want it and the tip doesn't ball up. Lanthanated tungsten!
I have a pulse MIG which is like controlled spray welding - again, the aluminum goes where you put it. You don't have to weld in the flat with that.
Why are heads worth $7k?
Discontinued aftermarket heads with an aftermarket port, receiver grooves. $2000 in valves and springs and set up for a special rocker system. It all adds up.
So not 7k 3k in vales and rockers min. Probably 5k... Heads are ls3 normal heads.
You really neeed to heat the whole head in an oven then weld /reheat before it gets cold then weld repeat. Then cool it off slow in an oven like Min 4 hours slow. Or you will build internal stress and it will fail. probably why the first repair failed.
Oh no, it will never work!
Yeah buddy everybody else that does it right is an idiot. You know it all/@@EngineRehab
Videos you can smell. Ever tried 4943 filler?
I may have? I don’t remember. I know there was another one floating around that had the 4043 characteristics but more silicon or just wetted in nicer.
@EngineRehab that's the one, I've found it works way better for casting repair and can be used as a 4043 replacement pretty much everywhere.
I've done a lot of racing engines. While you can repair aluminum, I don't think it holds up in extreme use. Since the point of racing is to cross the finish line, after a few failures, I sell the cracked heads or blocks to someone with a small budget that thinks he's saving money.
Yeah I’d disagree with that. Repairs are really common and accepted in the racing world.
Depends on who your clientele is. Maybe amateur drag racers will buy that. They run stuff till they have to sweep it off the track. The higher class racers drag race oval track road race dont like failure. One of your fix it and save them money jobs fails. You will be a lonely boy. @@EngineRehab
@@tomhutchins1046 you got that backwards IMO.
look at all the good used parts from cup racing on the market . Why are they selling good expensive parts so cheap?@@EngineRehab
@@tomhutchins1046 thats a different situation, parts are disposable. Engine programs change. They’re definitely still doing extensive repairs on their castings.
They are already junk to start. Might as well try to salvage them. (At about $3K into it, I'd bin them. Anything under is pure win.)
Why not just UT/MP it too see if there are any other cracks
LMFAO $7k 🙄
Mate the Tony wannabe is overpowering
Okay I’ll bite. Who’s tony m8
Wear a mask!
You know. I don’t disagree
Nice work 👏 but you talk way to much for me . But hey who am I 😅
Those are not 7k smfh
Somebody doesn’t listen
No. They cracked for a reason.
What do you think that reason was?
@@EngineRehab poor quality. Or a bad tune. Either way. Toss em.
@@buysncharge throw the whole world away
@@EngineRehab just charge for it. And once it's done. Yeah. Get one that didn't fail you once already.