In a previous video (https://youtu.be/EBIbZjkbfHk) we removed some broken bolts from the head of this Chevrolet 2500 6.0 using the welder. Unfortunately someone was there before us and made a big ol mess of this head. Now it is time to show you how to (hopefully) recover the hole(s) and use some thread inserts to make the repair.
-Enjoy!
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Lots of choices out there for thread repair kits on the web. Personally I have used Time-Sert (The best IMO) and I have used a LOT of Helicoil brand and have had great luck with them as well. I see a lot of off brands on Amazon that have really good reviews too. Do your research, take your time then just get after it! Best of luck to ya!
-Eric O.
Heli-Coil 5546-8 M8 x 1.25 Metric Coarse Thread Repair Kit : https://amzn.to/3Iwt6Dl
All any of us wanna do is show them what it looks like😂😂😂
Hot sauce!
I have done a lot of those situations. Sometimes I will use a Keensert for those situations when a Heli-coil won't work.
Nice Job Eric !
People crank too hard on aluminum. Especially if the threads are wet. If they're wet, torque HAS to be reduced by 20%-30%.
For example, if you're changing your transmission filter, when you go to torque the bolts down without purposefully degreasing them and the hole they'll go into, you will strip thise threads sooner than later even if using a torque wrench at the manufacturer's recommend dry torque value.
You took that cylinder head from a mess and turn it into a masterpiece those three Heli-coils you put them in perfect you did exactly what any good machinist would have done and you did an excellent job there Mr O .
nice job.
Super cool video Eric O
you are one of the most gifted technicians i have ever seen
aluminum
/ə-loo͞′mə-nəm/, not al-loo-men-nəm. Eric, where did you learn how to pronounce the second most common metal? Or are you just doing that to drive viewers nuts?
That was the best!
I have never done this before, but it looks like I might have to soon. Thank you for the excellent video! You mentioned that others use locktite on the helicoil but didn't mention why you chose not to do so? What prevents the helicoil from coming out when you unscrew the bolt? And are you able to use OEM torque or should you use less or what? Thanks!
Is it possible to do this on a LT4? Without taking the head off the car. I have 2 exhaust manifold holes that will let the bolt screw it about half way then get resistant. Do I just need to run a tap or a die through to repair the preexisting threads or do I have to make new threads?
Excellent Video sir! Question : Do the helicoils stand up to Torque spec?
Just helicoil the helicoil
Helicoils are a lifesaver. I find the no-name ones work fine (those I've tried).
One of the other Utubers..torque test or project farm, I forget which…found that they are stronger than the Time-serts. They are sure more available, cheaper, and easier. A shop I worked at had time-serts, so I tried them, but mostly stuck to helicoils.
Most helicoils are 304 SS, so mostly iron- they are ferrous, but non or minimally magnetic. (65-70% iron) I don't understand magnetism..mysterious.
Most airplane cylinders come new with helicoiled spark plug threads, and I see them elsewhere in New things.
It's rare that you can fix an effed up part, and make it better than new so easily.
Nice moves cleaning up that naughty hole, Mr. Rocko "Big Stiffy" Holecleaner.
Time sert. Much better
Gosh I wish you were my neighbor love your analogies lol.. I have a Chevy Colorado that could use a new timing chain and two snapped head gasket bolts that we could work on!! …So if you ever are by Buffalo, NY let me know …of course I had to order the parts ahead of time
I saw it falling out
I've installed hundreds of KeenSerts in heavy construction equipment and large diesel engines. Biggest difference is the bolt can be removed and replaced many times without disturbing the insert. With Helicoils the insert is usually ruined when disassembled.
I love this video â¤
Quick question, I’m sitting here with not as much experience so bare with me, he mentions that one of the holes have already been drilled out and can’t do much for it. Would it be a good idea to up the size drill for all bolt holes essentially asking for a slightly wider thread ?
If the thread is destroyed, why not drill it out to next larger size, M10 instead of M8? Is there enough meat in the head to do that?