Thread Repair - How to install a Helicoil
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- Опубліковано 16 вер 2024
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Using a Helicoil thread repair kit to repair threads inside an aluminum fixture. This damaged stripped thread repair can be done in a variety of materials and applications but the procedure is the same. Visit https//:www.thejunkmanadv.com for more helpful tips.
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TO THE POINT, no rambling on and on. Good vid.
This is what we need on yt❤
Used a $40.00 Helicoil M14 - 1.25 cm kit to replace the oil pan plug hole which stripped out on my F250 6.0 Diesel. To replace the pan would cost upward of $2000 for the labor, (engine would need to be pulled) and $250 for the OEM Dealer part. Thank you Amazon for the parts and you for the video. I wondered about doing this and appreciate your advice on fixing a stripped out hole.
you need a hole box of helicoils for these new engines
What about the broken tang? Where does it go? If oil pan is still attached how does one fish it out?
Magnetize the end of the punch OR put a little grease on the end. It will stick.
Nicely done and explained. Good video!
I like that the information starts at the start of the video rather than 3/4 through
What a short sweet and very well explained and demonstrated to the point video. None of the irritating self-effecing waste of time. Thanks again
Just to give a little more information on these taps used to install Helicoils. The taps for the helicoil are special. They are not to be confused with common standard type taps. If you look on the side of the tap, it will have a STI (Special Thread Insert) designation for a given size. These taps are not regular taps.
I was told better off buying the kit. Or bring your own tap to the store and compare
Cheers Michael. You saved me a headache.
The tap comes with the kit.
*Screw Thread Insert = STI
@@supermotos I'd assume that the pitch of the thread is different, which basically means that the distance between each individual thread will be unique to a regular metric tap. The helicoil kits will have done this as a marketing tool so that you have to buy the full kit to do a proper job.
Thanks for explaining perfectly how helicoils work!
Really good for things that you regularly take apart eg.racing engines.If my memory serves me well,some specialist engines have steel or brass inserts already cast into the engines so the threads don't wear out.They do not oxidise either and break bolts either.Very good and straight to the point video.
I now have the confidence to perform the task thanks to you. Should I be worried about metal particles getting into the engine? Replacing an oil drain bolt on a 250cc motorcycle engine, drain bolt is located on the bottom of the engine chassis. Thanks again
flush the engine with tons of oil
There is an oil strainer and an oil filter that will eventually
Flush it out. Thats why use thick grease before drilling to contain the metal bits.
Nice instructional, like the setup you have going on, always a good professional quality to your vids.
Thank you for the video. Me and my dad are going to do this on my moped.
hey man, what kind of moped have you got?
Amazing demo of instaling helicoil
I sure learned something new today. Thank you sir!
Fantastic demo. It's not hard to do but scary to do it for the first time 😊
WOW! Thanks!! Going to do my first one tomorrow on an aluminum bell housing. Not worried at all now!
I'm doing this on a go kart muffler.. now I dont fear also
You just saved my lower unit. Thanks dude.
Thanks for the video i have to do a toyota block in next couple days so im watching every video i can lol.
Glad it helped.
When you start the tapper put it in the drill press so it starts straight....3-4 threads then cut the power and then finish it by hand. When I install the helicoil I use loctite sleeve retainer.
When installing the coil, it seems the hole must be at least the same height as the coil. In my case, it was only half, and the tang refused to come off. I''ve decided to use an angle grinder with a cutting disc to reduce the coil size. I've also decided I'll try and use blue threadlocker before busting the tang.
Your correct. Shortening the coil is sometimes necessary.
Mahalo for the video! Frickin Honda valve cover bolt holes are weak.. Again, Thanks for the vid. Breaking off the last part always gets me nervous. lol Aloha
I’m fixing the same thing how’d it go
Great video. Simple & 2 the point
you make it look easy
Straight to the point Excellent video 👍👍👍
Lock tight for the threads.. genius tip thanks
WOW. SHORTEST AND BEST VIDEO. SUBSCRIBED
Awesome, thank you! Not sure exactly why, but my helicoil needed to be poking just a tiny bit out of the hole for the bolt to bite. Once I'd got that sorted it's working a treat. A little touch of oil helped too. Thanks again :)
Good job 👍🏻
Thank you. Short and sweet.
Yes back out the tap a bit after a few turns to break off any metal shavings and so they don't bunch up.
I don't understand. If you tapped the hole, why not screw into that rather than the helicoil? Is it because the helicoil is steel and creates a stronger grip? I'm a newb.
In theory some situations you could do just that, but in most you want to be able to go back with the same sized bolt. Also the base material here is aluminum which is soft and that is why it stripped in the first place. A heli-coil thus makes steel threads that will wear out slower or are less prone to damage in the future.
thejunkman ok it didnt strip because it was aluminum, it stripped because some noob over tightened the fastener. Next time torque it correctly, maybe even use some anti seize
Hey sorry guys... I'm the one who stripped out all your bolt holes before you got them...
314k Ford owners watched this video
And double that for old timers that jamb SAE bolts into Metric holes...
Mason Marrone 👍🏿
all new engines need helicoils a lot of them
I own a ford and you are correct
when i put my engine in i didnt thread the bolts for my slave cylinder in all the way and i pressed the clutch and it ripped both the bolts out (then they both fell in a bucket of oil), and let me just say im glad there was enough threads left so i didnt have to do this under my car!
otherwise i would be here needing this video :)
These helicoils are small. How come they come in longer lengths? Or can you install multiple helicoils on top of eachother?
Nice! Thank you very much!
Was able to fix my brake lever and shifter clamps. Thanks!
GOOD VIDEO. THANKS FOR SHARING.
Dang that took me a few hours but thank you for your knowledge!
Great video!
Cheers boss, good video, clear instructions nice one!
Great video mate 👍
That is a nice E series KDX.
Good morning I liked the video, just wondering if this wood work on a carburetor on a 135 massy Ferguson the bottom screw for adjusting the fuel or air adjustment screw thanks!😇🇺🇸🤠
Nice video grey helpful thanks
Can you put the original bolt back in? Just curious how different thread sizes work with helicoils. My bolt has pretty shallow threads and I don’t know if I should try to find a bolt with deeper threading to replace it. Does the helicoil warp to form the threads of whatever bolt you screw in (obviously with the correct diameter)? Or does the helicoil form a fixed set of threads that you should purchase the correct bolt for? Don’t want to strip out the helicoil threads haha! Thanks :)
That is the idea is you can put the original bolt back into it.
I love to learn to fly a heeeeelicopter one day.
Thank you, rusty bolts like to eat threads, time to fix one on my steering rack
Thanks
What do you do if you need the threads at the bottom of a cylinder head & you can't bust off the tang cause there's no way to get it out? Do you just leave it attached? Cause I've got to do this to my aluminum head for the valve cover, but there won't be a way to bust off the tang & get it out
Watch this video. It discusses blind holes. ua-cam.com/video/l1tXNEsjwSQ/v-deo.html
You would usually finish the heli-coil at 1 to 1 1/2 threads below the surface and don't forget to retrieve the tang you broke off!
What if the hole where the tang will fall is inside an engine or other mechanism? Does the tang need to be removed? Is there a different method for doing that in the case where you can have a loose piece of metal dropping into the case?
personally I use a magnetic screwdriver with a small blob of grease on the tip. That always has worked for me. I have done this on crankcase fill plugs with no issue.
tip: put weight (light) on quill so the drill or centre drill can alin the tap for you thats what the nub in rear of tap is for :)
so how did you get the swarf and tag out so they don't clog anything up?
💥✨💥 Great video and very professional. I have to do this on an oil drain pan that is still on my car. Any advice how to reclaim that snapped off tang and also how to clean out the shavings from the pan after tapping it.??
Put a little grease on the punch, or magnetize the end.
thejunkman thanks
start the tap with a point in the drill press so it will be strait
That would be ideal, but a lot of people might not have that luxury so I wanted to show that it can be done with some patience.
When be needed a long thread, can be installed two inserts in the same hole ?
You can, but I would use a product called a Time-Sert
Thanks bro.
Thanks?! Just got figure out what size bolt I have and then buy the one to fit?
Use a bolt sizing guide and thread pitch guide. They can be found online and you can match it up. I have physical tools for measuring myself.
@@thejunkman well, I’m going to see if I can tap the existing thread and clean it up and see if the new bolts from Toyota will tighten down to spec. If that doesn’t work, then I’m probably gonna type it out to something bigger and run some completely different bolts. Thanks for the reply! Great video.
If there is enough "meat" that is a viable option.
@@thejunkman thanks! May just drill it out and add a new nut and bolt 😄
Do you know what size I could use to rethread my bike pedals on to the stripped crank? TIA
No, but you can get a thread measuring tool and find the thread of the pedals, then buy the appropriate helicoil.
It’s been 6 years do you still ride the Moto
Yes
Question. If you just tapped the threads then Why do you need a helicoil if you have new threads?
I think it might be obvious, but how else are you going to be able to go back with the same size/thread bolt? Also in this case, its aluminum and these steel threads will be more durable.
What happens to tang in blind hole ?
Either use a small magnet to get the piece out, or apply a little grease to the punch used to break it off. The piece will stick to the grease on the punch. Blind holes I tend to over drill the depth by just a little bit to allow room.
hi great video buddy, top info and good camera work. can I just ask if I was to use one of these on a hole that didn't have a bottom to it, could I just leave the tang on and hope the bolt pushes it flat when it passes out of the end of the helicoil, reason I ask Is because I want to use it to repair a hole on my inlet manifold, and I don't want the tang going into the engine. thanks.
Oh and since it doesn't have a bottom to chop it like you show, is there a safe way to chop it off and remove it out of the hole if I need to?
In your case I would use a product called a Time-sert. Heli-coils require the tang to be broken off to swedge themselves in there, a bolt would just back the helicoil out. You could magnetize a chisel and use a little grease to catch the tang when you broke it off.
+thejunkman awesome, just checked those out and they do indeed seem to be what I need! Cheers gave you a thumbs up
If the hole is not blind, the tang will fall. You
can risk smearing grease at the end of the breaker but you need a dry
blow to break it, and the most likely is that you help it fall faster. Using a nose plier for this purpose will disrupt the insert (which is like a spring) and the thread pitch will be lost.
In
the case of blind holes such as video, you have to remove the broken
tong otherwise the screw will stop on it and will push up without
adjusting and damaging its thread. It can be solved by shortening the screw if feasible.
One thing......if this is going into an engine compartment or some such, and don’t want to risk dropping the “tang” into the engine, can it be left in place?
This has been addressed in the comments and in the video. The tang needs to be removed as this is what "locks" it into place.
Can i use 2 helicoil if i need more dept.
Buy the correct depth jelicoil
When you insert a helicoil does the thread hole become smaller therefore you need a smaller bolt than before?
No, that is the main point of the heilicoil. You can repair the threads back to the original size.
1.Is it a helicoil suit for fibreboard?
2. I believe Helicoil work perfect for the blind hole and what about through-hole?
1. There are nut inserts for wood 2. They can work on a through hole as well.
@@thejunkman
Thanks for the information shared 👍
So i need to do an exhaust port on a small 9 horse gas engine , threads are stripped, how do i know what size heli coil to get ? Do i need to go up to the next size , if i do then my muffler threads will be to small.
Buy the size of the bolt that mounts the exhaust. That's how they are sized.
You broke that tab off the bottom. Hey w did you get it out of there?
two ways. magnet, or put a small blob of grease on the end of the punch and that will capture it.
Hi, i have M2,5 bolt and M2,5x0,5D helicoil: which thread tap and drill should i use? thanks
+Fabrizio V the package should tell you
Why do you need the coil in there if you’ve already created a thread using the tap in the first half of the video?
To put back the correct size fastener.
@@thejunkman of course! It’s obvious… the hole bored out would probably be bigger than the screw/ fastener that needs to be inserted back in.
Hi, I need to re thread a 12mm bolt. What size of helicoil do I need and what size of tap and drill bit should I use? Thanks in advance
Go to the Helicoil site and it will tell you
@@thejunkman can you tell me what the site is? I've no idea. Lol. Please help
lmgtfy.com/?s=k&q=helicoil+website ;)
would you still be able to do it without drilling the hole out?
No, helicoils require a specific size just a tad larger than the original hole so the thread can go back in.
What's the point of using a helicoil insert? Why not just tap the thread out and install the bolt straight away? Is it somehow stronger? Cheers!
Yes, and you can go back to the same size which is necessary in most cases.
So do they work on bigger bolts??? I only see one size coil and all that
Yes they come in all types of sizes. You buy the one you want to go back to the original size. Each "kit" is for the specific size you want because each size requires a different drill, tap and install tool.
Steel helicoil in an aluminum pipe? Wont that cause an issue? Galvanic corrosion?
Galvanic corrosion won't be an issue as long as there's no electrolytic - ie moisture. Ask yourself how auto manufacturers use aluminum heads on iron blocks.
It's stainless and what holds an aluminum engine together? Steel bolts.
Use some grease on the bolts to exclude any moisture when finished.
You say "Use the correct size drill bit." Is the "correct size" the same diameter as the screw / bolt that goes in the hole?
The correct size drill bit is the one specified for the size of Helicoil you are going to use. It is listed on the packaging, and probably on their website. For example installing a 1/4-20 Helicoil requires a "H" (.266) sized drill bit. If you buy the kit for the size you are replacing it comes with the drill as well as the install tool.
thejunkman thank you!
Stihl vs. Echo...........almost every single echo I have worked on has become “alchemically” bonded to the fastener....resulting in broken fasteners....Very rarely have I had to helicoil a Stihl.....most fasteners used on Stihl eqpt. have a coating on the screw that keeps if from bonding to the part.
What the name of the tool
Those that work on the sink faucet ring?
Huh?
Woukd u look at that if you have Brembo calipers at least 1 of your calipers have 1 stripped hole :) .. heres a helicoil vid to fix it
Do you thread the coil all the way down or just keep it flush?
It should be flush when installed. There are different length inserts for different depths, but follow the directions and you will be fine.
If you’re tapping, what the point of the coil?
To put it back to the same size, and in this case add steel threads rather than just threading into the aluminum as before. That was the reason these threads failed in the first places. Steel bolt into a (cheap) aluminum thread.
bonjour bon video
How to do it in a blind hole
It is still done the same way, but you have to drill deep enough. For blind holes I prefer a product called Time-sert. It is installed much the same way but it uses its own special tools.
does helicoil works with square or acme thread ?
Possibly. You will have to buy the correct helicoil. Check with their website to see what is available.
Who does not like to break off a little tang from time to time?
Just tread and use a bigger bolt ???
That is not always possible in all cases.
Is drilling a bigger hole still recommended. I need to retap my case cover thread from putting a larger Bolt.
Yes, to install the new threads you have to drill a bit bigger.
no
Hey man great video, can I ask a question, I have a 30mm aluminium hub centric spacer with a stripped thread, It won't tighten and just keeps spinning, I don't have strong enough drill to do this myself, what kind of places would do this kind of repair? I can't seem to find any place that specifically mentions they do this kind of work but I have found shops that sell the kit. Would I be looking for a fabrication company? Thanks
Generally any machine shop should be able to do this. Also i this is relating to a wheel, a custom wheel shop should be able to re-thread this.
Thanks man, I'll call up a few places tomorrow and see if they can do it.
I decided to just do it myself got a helicoil kit, just hope my 18v drill can make the hole bigger, thought it was worth it since If it happened to one spacer it could happen to the other 3 and would be worth my while being able to do them all myself.
after you drill the hole the put the tap in the drill press and turn by hand it guarantees the tap will enter the hole square. I learned this from an old machinist. once the tap is in the hole square and solid you can finish driving the tap with the hand wrench. never use power of the press to turn the tap it goes to fast and will snap your tap off.
Yes, and turn the tap forward 1/8 turn, then back 1/4 turn, forward another 1/8, etc to eject the chips. NEVER go 1/2 turn or more without ejecting chips. That is, if you want the strongest psosible threads.
The coils we use in aviation are 400 a piece . Robbery!
Probably 399 dollars for the insurance and a dollar for the part
If you're tapping a hole anyway, why put a helicoid in there...what for?
To go back to the same size bolt. Also to put steel threads in place of aluminum.
so quick question I have a 2001 raptor 660 and the bottom banjo bolt is striped along with the hole will this work on that with the heat that comes from that part of the engine?
Yes, although in that situation I would use a "Time-sert" which is a competitive product to the "Heli-coil" installs much the same way.
thejunkman ok thanks for the quick response
No problem. I should make a video on the time-sert, although like I said, it installs much the same way.
Do you know it works with 14mm bolts for a motor mount
Yes, they make them in all kinds of sizes
I need to do this for a stripped threaded hole in my car's engine block. it's just one of the head bolts that's not tightened but still I don't wanna risk burning the head gasket. is it safe to do this with the engine head installed?
You can. Just be careful and coat the drill bit and tap with grease to catch the chips you will make
thank you for your time to answer me. I imagined so. one thing that scares me a bit is not going down perfectly straight since ill be working in the engine bay and the stripped hole is at the back of the engine head near the firewall.. its the weekend I think I'll do this this saturday :) that'll do for a relaxing saturday. hope itll be ok
Could I use a m6x1 tap to retap it for a 6.3x1 ?
Go to the junkyard and buy a used block. Helicoils aren't strong enough for the sort of torque needed for head bolts, GENERALLY.
A TIME-SERT is an option for these. Metal stitching is an option for these situations but is probably not cost effective for easily obtainable automotive engines. Its more for industrial, antique, or high cost castings where entire replacement blocks are not available or practical. www.locknstitch.com/precision-metal-stitching.html
Did you use the next higher tap from the initial thread size for the coil?
+Marlen Cisneros i used the one specified by the coil i am using
thejunkman I figured it out. Had a 10x1.25 and didn't know if I had to use a 12x1.25 for the coil but turns out taps for coils are different in width. Thanks for replying
would this work on my car oil sump pan as the threads are gone on the sump for the the nut to go back in
Yes, probably. As long as there is enough material around it to enlarge it a bit to re-thread.
Why not just tap it oversize and use a larger bolt? If metric, go to the next SAE size up; if SAE, the next metric size up. Eh?
Why use the insert when the tap makes the threads?
Because you have to enlarge the hole and then you cannot use the same sized fastener to go back in. In my example used in the video this is also aluminum where as the original threads were just into the aluminum with a steel bolt run into them, thus why they stripped in the first place. Putting a steel insert in gives more robust threads for this application.
Do not back out tap in aluminum unless it is binding. You turn back to break the chip of a hard material.
Wish your hand hadn't block the video especially when you introduce next tool use like bar stock with hammer.
I am not sure I understand, seems like your missing some words in your comment. You can plainly see each step and each tool.