Usually, most of the manufacturers for the wire thread inserts (Helicoils) also recommend to chamfer the hole to 1 or 2 Px 90 or 120 degrees prior to taping. This helps in preventing any sharp chips forming on the edge of the hole. It also is very helpful to see when you stop with the helicoil. In practice, you drive the helicoil until you are flush and after that you give it one more rotation (360 degrees). The manufacturer has also the correct drill size and also 2 thread taps for the stronger or sticky material. In this way you can form the thread for the helicoil in 2 steps and the tap tool has less chances to brake. I would also advice to spay coat the helicoils with dry lubricant (again you can find it on most manufacturers like McMaster or Bollhoff). And if somehow you damaged the helicoil while you insert it there are some diamond shaped tools that you can use to extract it. There is also a chart to determine the needed helicoil length based on parent material and the bolt class that you want to use. For example, in a 6061 Aluminum, for a M8 screw in 12.9 steel quality bolt, you would need a helicoil of 1.5D (1.5x diameter of the screw). You don't need to get a longer helicoil, like 2D or 2.5D, because in the dimensions in the table, the screw is already the weak part. They are amazing products that distribute much better the load in the screw and you can easily replace the damaged ones without the need to enlarge the holes.
Ah ! I've watched a few similar videos but this is the first to mention when screwing in the helicoil you cannot reverse if you screw the insert in too far. Something that is probably so obvious to those practised folk it never occurred to them to point that out. I'll be putting in my first helicoils soon and appreciate knowing that ahead of time. Thank you MR Volkswagen.
Ein video von anfang bis ende mit guten tips , wirklich herzlichen dank so muss das gezeigt werden damit auch ich dass probieren kann man hat ja nur den einen versuch danke
Hi Nice explained video. I have helicoiled my Bmw e36 M52 aluminium block after striped the treads on head gasket instal. I have made a home made bracket to centre the drill from a 20cm wheel spacer..because i heard that if the hole is not straight the repair is not gonna hold.. Wass a fun project. I hope is gonna hold. Up till now 1000 miles and no issues.
Use paraffin as cutting lube for aluminium so you don't tear the threads. On something critical always use a engineers square to check 90 deg angle from the surface. (No matter how good you think you are) Lastly, throw that piece of junk ratchet tap wrench in the skip and use a proper Tap Wrench so that even pressure is applied to both sides of the tap. This will also keep tap from cocking over out of true and in harder metals it will minimise the chances of snapping the tap.
watching this before repairing the threads on my dogbone engine mount. ive been putting it off because for some reason, drilling into my transmission makes me nervous. thanks for the tips!
@@The_Real_Chris yup here for the same. Broken bolt stuck inside. Drilling through and going try this out to keep everything to spec. Pain in the ass situation lol
Great video. Few questions . I recently had 1 head gasket bolt go beyond its yield point and and break . Can see its twisted thrn broke . My settings are 25mm in sequence and thrn 37nm its a motircycle. The 25nm went OK its when I upped it to 37 that I had the break at heli thread . Heli don't seem the issue here more that possibly it bit sooner (clamped ) than the others and bolt had nowhere to go so sheered . All bolts as adv9sed by manual were oiled . So would it be a case of less torque ? Or no oil on the heli? Or maybe the 2 heli method ? Thanks in advance
I now have zero confidence in helicoil in VW case. I just changed heads on an engine and a helicoil on a head stud popped free at 18ft-lb. I torque-tested the rest of them to 25ft-lb and five others popped. I'm changing all the helicoils out for actual case-savers.
you can buy case savers of different lengths and sizes for upgrade or repairs from California imports..Cip1.com I have lots of videos or repairs and building performance vw engines ..if you look up Mark Russell Volkswagen on youtube
@Figment078 When I blew the head gasket on my 04 BMW 325ci the head warped & pulled out over half the bolts. I used the Time-Sert coil repair kit to fix it. I did the repair over 7 years ago & the repair has held up. I have had zero problems! I drive the car all the time & it has no leaks whatsoever. I highly recommend Time-Sert for any repair where you have to apply allot of torque to the bolts.
m8 helicol tap..it is sized for the outside diameter of the coil..it comes in the helicoil kit and the driver and about 6 coils ..around 40 bucks from local jobbers
I did remove drive tang and waited 24hrs for loctite to cure up ,and then I run a tap back through to ensure lock tight debis does not interfere with the bolt threading into coil
@Rendro Schifolli Because you want the helicoil to Stay inside the hole, and not back out if you have to someday remove that long bolt to open up the case.. Without the loctite Red on the helicoil, it can unthread right out of the case on the bolt sometimes, when you are removing the bolt....
Can this technique also be used on the fastener of the timing belt tensioner? I tried to renew mine and while doing that accidentally stripped the block. Unfortunately there's barely enough room in that location to run taps and dies. Feel really shitty right now. Might have to remove the engine to repair this.
OR....you could buy longer Helicoils. 3 X 2D will be 2X diameter long (6mm) I've seen 3, 4, and 5D Helicoils, but at least you Loctite the coils into the block like I do. Can't go wrong if you do that. One thing I have used is JB weld but I have not tested the torque it will take afterwards.
02 Elantra......Anyone know what torque limit should be on this Helicoil's on a Timing Belt tensioner pulley Bolt which calls for 38Ft pound will these Helicoils hold up to 38 Ft of torque
Hey great vid i'm getting ready to do this on a stripped bolt hole for a drive belt tensioner. The only part i'm concerned about is that all the helicoils seems to be the same size and I only see people using one. The bolt threads im replacing are about 3 cm on an m8x1.25 bolt.. Would one helicoil be enough?
helicoil has different sizes ... depending on the torque of the bolt you can use a longer one .Usually the standard size 6mm is strong enough for 20NM +
I thought it was completely NO GO to use loctite on helicoils due to the physics Of a helicoil thats a “spring” rather than a solid bushing (time sert)??
Hola amigo gringo, a lo mejor usted sabe por qué cuando se arma un motor de escarabajo al apretar las tuercas (con el torque correcto) para unir las 2 carcasas el motor se traba... Que podrá ser?
Are helicoils generally slithly bigger than the hole diameter and compress as they are threaded in? I ask because I have checked my finished 3 pitch with 3 different gauges and all read the same but when I received the package of coils I ordered from the hardware store the seals were broken and the coils are nowhere near the size on the package , thinking someone returned these and they had been mislabeled,
The Helicoil's come in a compressed state. When installing them then they lengthen. Also, Helicoil's come in lengths x diameter. So a 8mm 1.5D is 12mm long which is what these look like.
When i bore cases i keep the cuttings for campfire time...be careful...magnesium used to be in old flash cubes....its a croud pleaser lol...i throw marble size bits in...again be careful
Use a Time-sert. It’s a solid threaded insert that is far superior to a helicoil. It’s super easy to use and everything needed comes in the kit. I just fixed a stripped 8x1.25x11.7mm drain plug in the aluminum housing of my outboard’s lower unit using a stainless steel Time-sert. It costs more than a Helicoil but is worth it.
I was under the same impression and for the most part I still am, although I must admit the others comments are factual, they are tests that demonstrate the helicoil has greater "pull out strength" or whatever the proper term is. Long story short, thats only one test, one type of experiment. Basically, the tests need to be broadened to include more variables and then we'd probably find the timesert's beating the helicoil's in certain tests, and vice versa.
Hang on!! Did I see a set of molegrips? I thought this was a good video until I saw a ratchet spanner being used on the tap and a set of molegrips being used on the thread inset tool!!! Why can't people use the correct tools nowadays?
Usually, most of the manufacturers for the wire thread inserts (Helicoils) also recommend to chamfer the hole to 1 or 2 Px 90 or 120 degrees prior to taping. This helps in preventing any sharp chips forming on the edge of the hole. It also is very helpful to see when you stop with the helicoil. In practice, you drive the helicoil until you are flush and after that you give it one more rotation (360 degrees).
The manufacturer has also the correct drill size and also 2 thread taps for the stronger or sticky material. In this way you can form the thread for the helicoil in 2 steps and the tap tool has less chances to brake.
I would also advice to spay coat the helicoils with dry lubricant (again you can find it on most manufacturers like McMaster or Bollhoff). And if somehow you damaged the helicoil while you insert it there are some diamond shaped tools that you can use to extract it.
There is also a chart to determine the needed helicoil length based on parent material and the bolt class that you want to use. For example, in a 6061 Aluminum, for a M8 screw in 12.9 steel quality bolt, you would need a helicoil of 1.5D (1.5x diameter of the screw). You don't need to get a longer helicoil, like 2D or 2.5D, because in the dimensions in the table, the screw is already the weak part.
They are amazing products that distribute much better the load in the screw and you can easily replace the damaged ones without the need to enlarge the holes.
Ah ! I've watched a few similar videos but this is the first to mention when screwing in the helicoil you cannot reverse if you screw the insert in too far. Something that is probably so obvious to those practised folk it never occurred to them to point that out. I'll be putting in my first helicoils soon and appreciate knowing that ahead of time. Thank you MR Volkswagen.
If you want to reverse it, you need another tool
@@emilyfan8894 well you can do it with pliers but its not easy
Yea can definitely be done.
@@chriscs9080 Professional tools are better
@@chriscs9080 I've done it twice its fiddly but doable I agree
This video was a lifesaver, thank you 🙏🙏🙏
Ein video von anfang bis ende mit guten tips , wirklich herzlichen dank so muss das gezeigt werden damit auch ich dass probieren kann man hat ja nur den einen versuch danke
Dankie/ Merci Mark Russell. Know I know much more of heli-coil. Thanks for showing the red stuff to fasten the heli and make it hold better.
How to heli coil an aluminum head on a 2001 Chevy Silverado 1500
Hi
Nice explained video.
I have helicoiled my Bmw e36 M52 aluminium block after striped the treads on head gasket instal.
I have made a home made bracket to centre the drill from a 20cm wheel spacer..because i heard that if the hole is not straight the repair is not gonna hold..
Wass a fun project.
I hope is gonna hold.
Up till now 1000 miles and no issues.
Nice improvement made wid using helicoil.
Use paraffin as cutting lube for aluminium so you don't tear the threads. On something critical always use a engineers square to check 90 deg angle from the surface. (No matter how good you think you are) Lastly, throw that piece of junk ratchet tap wrench in the skip and use a proper Tap Wrench so that even pressure is applied to both sides of the tap. This will also keep tap from cocking over out of true and in harder metals it will minimise the chances of snapping the tap.
watching this before repairing the threads on my dogbone engine mount. ive been putting it off because for some reason, drilling into my transmission makes me nervous. thanks for the tips!
Here for the exact same reason. Working up the courage to plunge a drill bit into my aluminum trans housing.
@@The_Real_Chris yup here for the same. Broken bolt stuck inside. Drilling through and going try this out to keep everything to spec. Pain in the ass situation lol
Thanks sir you solve my problem
Great video.
Few questions .
I recently had 1 head gasket bolt go beyond its yield point and and break . Can see its twisted thrn broke . My settings are 25mm in sequence and thrn 37nm its a motircycle. The 25nm went OK its when I upped it to 37 that I had the break at heli thread . Heli don't seem the issue here more that possibly it bit sooner (clamped ) than the others and bolt had nowhere to go so sheered . All bolts as adv9sed by manual were oiled . So would it be a case of less torque ? Or no oil on the heli? Or maybe the 2 heli method ?
Thanks in advance
Good idea thanks.
Awesome job! I would do it the same way.
Thank you!
I now have zero confidence in helicoil in VW case. I just changed heads on an engine and a helicoil on a head stud popped free at 18ft-lb. I torque-tested the rest of them to 25ft-lb and five others popped. I'm changing all the helicoils out for actual case-savers.
you can buy case savers of different lengths and sizes for upgrade or repairs from California imports..Cip1.com I have lots of videos or repairs and building performance vw engines ..if you look up Mark Russell Volkswagen on youtube
@Figment078 When I blew the head gasket on my 04 BMW 325ci the head warped & pulled out over half the bolts. I used the Time-Sert coil repair kit to fix it. I did the repair over 7 years ago & the repair has held up. I have had zero problems! I drive the car all the time & it has no leaks whatsoever. I highly recommend Time-Sert for any repair where you have to apply allot of torque to the bolts.
Great video it was very helpful to me. Thank you 😊
I see you are using lock tight to fix the helicoil.i am subscribed
Loctite
@@genapolyakov who cares. 🤣
Thank you. I'm a helicoil virgin for a few more days.
Ça te sauve la vie,à avoir dans sa caisse à outils.
Thanks for posting this great video/job! So, for a 5/16 thread, what size drill bit do I need to use? Thanks
A 1/4 bro.
@@danielanderson2739 thanks bro, already did the work and apparently came out good
Oh cool. Was i correct or did you have to use a specific MM?
This needs to be converted
@MR Volkswagen Why did you select a helicoil instead of a time-sert?
Find these work the best in most application..used an insert for spark plug..never again.. i will always use helicoils even in vw heads
I have a question Sir what Size can i use for my swing arm loss tread having 14mm bolt.
Hello Dear Friend
I congratulate you, I recommend you Turkcoil helicoil.
thanks man
Very good jab Godbelsyo. T. Q
You can't over torque any engine bolts that's what strips it out to start with
When be needed a long thread, can be installed two inserts in the same hole ?
Can
Your tap and the Helicoil o.d. was M8x1.25.
What size was the bolt you installed after the helicoil was placed OR what size was the helicoil I.D.?
So you fixed M8 thread yes ? What's the size of tap you used to fit helicoil ?
m8 helicol tap..it is sized for the outside diameter of the coil..it comes in the helicoil kit and the driver and about 6 coils ..around 40 bucks from local jobbers
I didn’t see you break off the tab on the bottom of the helicoil.
I did remove drive tang and waited 24hrs for loctite to cure up ,and then I run a tap back through to ensure lock tight debis does not interfere with the bolt threading into coil
@Rendro Schifolli Because you want the helicoil to Stay inside the hole, and not back out if you have to someday remove that long bolt to open up the case.. Without the loctite Red on the helicoil, it can unthread right out of the case on the bolt sometimes, when you are removing the bolt....
It was a great job. You should have put a piece of cloth on the motor so that the refrigerator or small iron pieces do not fall into the motor
Any time he's doing a full build, before final assembly he spends several hours cleaning the block
The only thing I would do different is Vacuum out the filings instead of blowing them all over the inside of the engine.. Good video though!!
5:13 Can you tell me the size of Helicoil tap that came in a kit? Thanks
Thanks
Can this technique also be used on the fastener of the timing belt tensioner? I tried to renew mine and while doing that accidentally stripped the block. Unfortunately there's barely enough room in that location to run taps and dies. Feel really shitty right now. Might have to remove the engine to repair this.
Yeah.. You'll most likely have to remove your engine for that
@@lilkanethebig omg
Interested to know what the outcome was. These sort of things happen to me all the time.
I broke a extractor bit off in the case trying to get a broke bolt off. What kind of drill bit will cut that hard metal? HELP!!!!!
try cobalt bit ,or left hand cut drill bit/extractor ..go slow to prevent walking in hole
OR....you could buy longer Helicoils. 3 X 2D will be 2X diameter long (6mm) I've seen 3, 4, and 5D Helicoils, but at least you Loctite the coils into the block like I do. Can't go wrong if you do that.
One thing I have used is JB weld but I have not tested the torque it will take afterwards.
Jb weld is very weak when tapped. My s10 would confirm this. 😂
Like a V-COIL VOLKEL
I ordered my helicoils. Don't fit my tool . They seem to be a tad bigger?
02 Elantra......Anyone know what torque limit should be on this
Helicoil's on a Timing Belt tensioner pulley Bolt which calls for 38Ft
pound will these Helicoils hold up to 38 Ft of torque
Hey great vid i'm getting ready to do this on a stripped bolt hole for a drive belt tensioner. The only part i'm concerned about is that all the helicoils seems to be the same size and I only see people using one. The bolt threads im replacing are about 3 cm on an m8x1.25 bolt.. Would one helicoil be enough?
Tell me the installation steps
helicoil has different sizes ... depending on the torque of the bolt you can use a longer one .Usually the standard size 6mm is strong enough for 20NM +
ehy buddy, no svitol?
A thread insert is much better than heicoil and is available in long lengths
I thought it was completely NO GO to use loctite on helicoils due to the physics Of a helicoil thats a “spring” rather than a solid bushing (time sert)??
1. Tap handle
2. Winder type insertion tool
Very good understanding
Hola amigo gringo, a lo mejor usted sabe por qué cuando se arma un motor de escarabajo al apretar las tuercas (con el torque correcto) para unir las 2 carcasas el motor se traba... Que podrá ser?
Bonjour vilebrequin fauce ,voilé ,ou alors ces le carters à l œil sa se voit pas bonne journée
What glue do you used in helicoil
Loktite
No glue is needed, and the steel wire screw sleeve plays a role in fastening the thread
No need to use red Loctite on helicoil ,,what is this, amateur hour?
@7:15 you can hear Bubbles from trailer park boys lol
Are helicoils generally slithly bigger than the hole diameter and compress as they are threaded in? I ask because I have checked my finished 3 pitch with 3 different gauges and all read the same but when I received the package of coils I ordered from the hardware store the seals were broken and the coils are nowhere near the size on the package , thinking someone returned these and they had been mislabeled,
The Helicoil's come in a compressed state. When installing them then they lengthen. Also, Helicoil's come in lengths x diameter. So a 8mm 1.5D is 12mm long which is what these look like.
9:18 i don't think you're squre ,dude. LOL
Hey guys! Let's chase some threads right over our open engine case!
Case was at initial cleaning stage ..cleaning and checking fastener holes..repairing threads
للحصول علي المنتج والسعر
What is call that oil red
Red loctite
Magnesium alloy! A VW case?
When i bore cases i keep the cuttings for campfire time...be careful...magnesium used to be in old flash cubes....its a croud pleaser lol...i throw marble size bits in...again be careful
Green loctite. Can't remember the number designation.
Oil resistant. Permanent.
Use a Time-sert. It’s a solid threaded insert that is far superior to a helicoil. It’s super easy to use and everything needed comes in the kit. I just fixed a stripped 8x1.25x11.7mm drain plug in the aluminum housing of my outboard’s lower unit using a stainless steel Time-sert. It costs more than a Helicoil but is worth it.
Helicoils can actually take more torque than a timesert. There is a test on TH-cam. The timeserg failed at 70 ft-lbs and the helicoil at 90.
no its not there are several tests on TH-cam that shows helicoil is far superior to timesert.
I was under the same impression and for the most part I still am, although I must admit the others comments are factual, they are tests that demonstrate the helicoil has greater "pull out strength" or whatever the proper term is. Long story short, thats only one test, one type of experiment. Basically, the tests need to be broadened to include more variables and then we'd probably find the timesert's beating the helicoil's in certain tests, and vice versa.
Rule 101 always use a fucking hoover. Blown that shit all over your engine 😂😂😂😂😂
Forgot to remove the tang
I can replace helicoil
Hang on!! Did I see a set of molegrips? I thought this was a good video until I saw a ratchet spanner being used on the tap and a set of molegrips being used on the thread inset tool!!!
Why can't people use the correct tools nowadays?
My carb gonna be reared with this method.
Blessings, John 3:16. Jesus loves you.
You said mic, no your tested with a dial caliper not a mic know what to talking about.
Next time keep hands out of way of camera
Robin reeds dude chill.
@@ryanhenry21 That was about the chillest way he could have said that.