That feeling of dread when it just keeps spinning. Ugh. WTF did I break now? This is by far the best video I’ve found on the subject. Thanks for posting.
I’m glad you found it useful. I greatly Appreciate your comment. Thanks for watching. Please like share and subscribe. Also please hit the notification tab 🔔
I broke the coil while tightening one of the bolt of my new exhaust manifold. Yap the bolt just keeps on turning after that. It was fixed now. I ended up replacing the washer with a thinner one just to chase the remaining coil.
Still don’t be tempted to go ahead and try when u don’t have a clue , I just done to my 250 and I’ve made the threads worse helicoil failed and tool warped , take to pro or you’ll be a lot of money out of pocket
After watching I can't tell you how many videos for the helicoil installation, you are the first to tell me HOW to find out what size I needed to buy. I am sure there must be another video or two that gives that information but it has been frustrating seeing how to install one but not know how to decide the size to buy. This was really great. Thanks for the help and Jesus bless.
you just saved me a lot of money. Stripped the holes my shock mount bolts on to on my car. Was about to take it somewhere to be professionally repaired, but I found your video and gave it a shot, and it's really quite easy. thanks a lot!
That was a great video. When tapping the bolt hole, I've noticed that the thread chips will break into smaller pieces if you unthread about a quarter turn for every turn that you thread the tap in. It results in a stronger threading and less stress on the cut. Also, you'' be able to tap the hole with less effort
I've seen other videos on helix coils and the last step was to knock out the small hook on the end of the coil but I didn't see you do this at the end of the installation of the helix coil.
i read many comments on how he should have tapped the hole by turning and then back, he did say it was an alum head which for sure is very soft compared to steel, i myself thought he was going to deep with the new threads, but this video does gives people the idea how to fix a bad hole, heli coil
When tapping it's best to turn forward a full turn then back half a turn to "break the chip" of the threads that you're cutting. By simply running it straight through you put a lot of stress on your tap, and removing a broken tap turns a bad day into a shitty day.
Nah - that's easy, you just need to get one of those drill bits that can cut a beautifully straight core through a little chunk of hardened steel with a splintered-off top. I forget the brand of those bits, but they're usually on the shelf next to the broken camshaft glue.
Found two stripped bolt holes for the rotary valve cover on the block of my jetski after a full rebuild probably why the dam thing would run like crap with leaky compression. Anyway, watched this video and now i feel ready to get this fixed and get the carbs back on. Thanks!
this video gave me Forest whitaker eye. there is some mildly funny stuff like the bit not staying in and for the love of God use oil then follow proper procedure to use the tap. do not run the tap straight through it can cause issues and not cut correctly. That said Kudos for have a UA-cam channel and trying to help people it is more than i am doing
use cutting oil, WD40 spray will do, and each time you make a full turn clockwise do a half turn anti just to break the metal chips, just makes it a bit easier and less chance of error...but you did a good job anyway so I guess you have done it before!!
I rarely comment on videos, but good job, and thank you! I'll rethread one head bolt on my motor that got stripped while I was using a torque wrench as well.
Nice video. Just a note that on the insert tool has a collar with a grub screw which you can lower to the top of the insert. This acts as a stop so you don't put the insert in any deeper than you need to, which can easily be done. If it is too deep. in some applications, the bolt may only be caught on a couple of threads of the insert, which is not enough. Also, you need to break the tang at the bottom when it's inserted. Just take the tool out slightly, turn 90 degrees, and tap it with a hammer/wrench/heavy-ish object :-)
That's what my dad taught me too! I forgot that while rethreading the fuel inlet on my boat carb & bam had to go up the next size...& the metal was so thin @ that point I didn't want to chance it so 400 bucks went down the drain on a new carb lol
You can use the wrench shown in the video, of course, but you'll have an easier time of it using (1) A 12-point socket and ratchet, (possibly with an extension); (2) The closed end of a combination wrench; OR (3) A die handle from a tap-and-die set. I prefer the latter, but you need lots of space to turn it, which you may not have in constricted areas. However, it provides you a means to evenly distribute the force (think of it as a large T-handle wrench).
Thank you that was the best stripped bolt hole video I’ve seen so far. I stripped the bolt hole on my motorcycle valve cover and now I feel confident I can fix it. Thank you again.
Very cool. Thanks for this video. Without this video, i would have probably had to make a second trip for the drill bit, but now I know to open the manual and look for the size drill bit I need. Also, the bolt measuring gauge is a neat item to have around.
you need to break off the install tab and take it out, also before installing heli coil you put on some red tread locker, otherwise next time you take the bolt out the heli insert will come out with it. I am surprise the little inspector who was watching in the beginning of the video did not say something and let you continue. He shows interest that is good.
@@donwest5387you ask someone Who has an old,historic english motorbike. Or look for a club english motorbikes and ask. It is very common on a bsa and others.
Great tutorial. I'm restoring my 94 Pontiac Trans am and some of the 10mm bolt holes are stripped out on the fend well.... I just ordered a tap and die set...
I’m glad you found it useful , thanks for watching and commenting. I greatly appreciate it. Please like share and subscribe. Also please hit the notification tab.
nice video..question: i got confused about the left hand bit (what does that mean) and started my drilling into the broken bolt counter-clockwise😟..idk if ive gotten totally to the end of the bolt, but if so is my only option to go to the next size drillbit and then rethread? thank you in advance
Very Very Nice. I have a Bosch Router and want to re thread the bottom plate screw holes. They are small so I am still not sure what I am doing but this was a fantastic start. Thank You!
does the taping has to go all the way down or just enough so the coil can be close to the surface?. or either way would have worked ? what make the coil to remain strong even using torque ? thank u
okthat takes care of the hole, but can I reduce the diameter of a threaded rod? I bought the wrong diameter and was wondering if the screw can be made thinner and re threaded.
Jacob Curley - Im thinking if you want to use the threads cut by the tap it will have to be a bigger bolt, and it might be too thick to go through the rocker arm, in this case.. By inserting the correct thread helicoil into the tapped hole, you have the same conditions for the original bolt, before it got stripped out..
my man, i just picked up a similar kit at McFaddendale's here in Vegas...i was informed we need to pop that tang end off before it's complete... not really?
Majority of the time the hole is drilled slightly larger then the original size and then traced with the new threads. Because it would most likely be to tight if it was not drilled a little larger.
magga619 Thanks for watching. I always say follow the directions of the manufacturer. But turning back every 1/4 inch is a good tip for people to follow.
That is standard practice for anyone cutting new threads. The purpose to backing it up frequently is to break the thread material (slivers of fine metal) so they release and come out through the relief slots cut into the tap or die. If you didn't, you'd soon lock up the tap/die with slivers and be unable to proceed.
+Ian Thompson you have to follow the directions on the kit. But usually you have to drill the hole bigger. I hope this helps. Thanks for watching and commenting. Please like, share, and subscribe.
The coil insert is the new threads. If the application allows you to put in a bigger gauge bolt then I do not see why not. Just be careful. Most of the time you cannot go to a thicker gauge bolt .
Great job what about the thread in a crankshaft the problem is the engine is still in the car radiator is removed for more room but still hard because if of air con condenser
Sounds tight. It also sounds like one of those jobs where I would actually have to be there to see exactly what’s going on. So I cannot advise anything over the internet without seeing the whole situation. I greatly appreciate your and also thanks for watching.
That statement contradicts itself, that I did everything wrong but it worked. If it worked, then how is it wrong. Regardless , thanks for the comment. All comments are welcomed.
I sort of agree, he got the job done but the method was a bit careless and could easily have gone wrong. He should have removed the head before doing any drilling, leaving it on the engine like that is asking for trouble. The metal shavings could have easily gotten into the engine, especially when removing the paper towels AND using the air gun to blow them off. You could see the left port was exposed. The drilling and subsequent re-threading should be done using some sort of assembly that holds your tools at the right angle and prevents movement. I have to say this is a good example of non-professional backyard mechanics. I think the guy know what he's doing and he's got experience but what also shows through is the slack, approximate way of getting things done.
good comment but., sometimes backyards jobs are million times better than pro job ., mechanics are careless and I don't want to say assholes ., every time I bring my car to the pros . they fix it but give me another problem the last time my car was making a weird noise he say it was inside the water pump he change it doing a good job but the noise still there and he give me the check engine light on , when I told him about it after he use the scanner and saw the code his answer was in a really bad mood you can go to California with that light ., honestly mechanics are rats., every time I do a backyard job I do a very amateur job in many hours but with better results.,
I ha e even gone out an bought a helicoil kit now. The tensioner bolt side mounted for cam belt lost its thread and I really wanted a solution without change the lower half of the engine, and now I have one. Bummer though, to get access to it I have to use a right angled drill attachment doing a 8mm 1.25 helicoil. So first ever helicoil going to be tougher than most I recon. Ha ha
+James Barratt yeah that sucks. I hope it worked out. I'm glad you found the video helpful. Thanks for watching and commenting. Please like, share, and subscribe.
It did work out perfectly first time. Real easy system with flawless results. I didn't have to use a bolt chart either, as i measured the bolt with a tape measure and then measured the thread gap same procedure and just went for it. 8 x 1.25. Thanks to you and this video I fixed a cam belt tensioner and saved the engine. Ha ha
I had a hard time getting the flywheel off of my 50cc Chinese scooter. it seems the threads are messed up on the post that protrudes through the flywheel that the locking nut goes on. I'm not mechanically inclined can you suggest what to do?
I currently need to rethread a hole in my brake caliper mounting bracket for the guide pin bolt, would this be a possible solution, considering the bolt opening is open ended?
Caliper mounting bracket guide pin has no (male) thread. It just slides in and out. If you are taking about the hole on top of the guide pin which is used to hold the piston unit, then yes the guide pin does have (female) threads. However, why not change the guide pin itself? you will be changing both at a time! Easy and most imp, safe!
Hi there, I got a couple of questions. 1) why do impact guns do no harm to wheel nuts but yet can strip the threads of bolt holes? Where I live, mechanics use impact guns to fasten wheel nuts all the time. 2) Can tightening subframe bolts with an impact gun instead of a torque wrench cause the chassis' treads to be stripped? (I suspect this was what happened to my car, the handling is a little off now. An amateur foreman might have overtightened something).
Andrew Chan funny you say that. My wheel hub and lug nut are stripped from impact gun. I need to do this to wheel hub so I don’t have to pay $1,000+ to replace the wheel hub. Exactly why I watched this video! Hope it works!
Haha, at that time I lived about a 1/4 mile from the firehouse. I didn’t even realize how loud it was because I was so use to the siren. Thanks for watching and commenting. Please like share and subscribe.
It looks like when you retap you are using the same diameter, but if the thread was stripped I don't understand how this is possible. Shouldn't you have to retap with the next size up in diameter since there shouldn't be enough material on the existing diameter to do the job properly?
handy man I think I understand, you tap the hole to the next size up but the insert screws in using the next size up, but the internal thread of the insert is the old size for the original bolt? Thanks
Good video. Im going to refer to it as I re-thread my crankshaft snout bolt hole. Only a 1/2 inch porttion at the beging of the hole is stripped. My bolt is 14mm with 1.50 pitch. I'm goimg to drill the 1/2 inch portion with a 14.5mm drill and them use a 14mm hand tap (plug type). Any opinion? Wont hold you to it if I screw up (lol). Also. are the coils necessary ? Been researching for couple of weeks, never done before, got to soon. Kia wants $800.00 bucks......not going to happen.
2014 chev cruise and someone stripped out a valve cover bolt. M6 30 with E10 socket bolts. What would I drill and retap bolt hole with?, drill bit size and rethread size?
what about a stripped bolt hole in the rear differential? does the differential and drive shaft need to be pulled in order to heli coil it perfectly straight or can it be done on the car? also with the amount of torque it has will it hold up well?
I just did this and my bolt doesn't go down All the way the rocker arm still had some play🤦🏿♂️ so I tried getting out the thread but it doesn't want to come out so I tried Retaping it out in snapped the thing that wholes the rocker arms set in place then I tried drilling it out and that snapped the drill bit inside 🤦🏿♂️ can't win I did rocker arm all the time but this one time the bolt just had to be stripped 🤷🏿♂️🤦🏿♂️🙏🏾
I have a stripped transmission f bolt hole on the right side of the transmission. Any help would be nice i don't want to drop the transmission. . thanks
Great video. Learn something new every day. I didn't know there was such a thing as a Helicoil (to be used with a Tap). Just when I start to think I know a lot ;) Thanks for the enlightenment.
A few days ago I stripped transmission drain threads. I’m thinking to re-threads it but if I do that do i need a bigger bolt? I’m think the drain hole will be slightly bigger there for I need big bolt.
They do sell these and here is the link amzn.to/2R2eGCM I hope this helps. Just make sure you know what size it is , you can watch this video to help figure out the bolt size and thread pitch ua-cam.com/video/0JammBOVZ8w/v-deo.html I hope this helps. Please like share and subscribe. Thanks for watching and commenting.
Thanks for the vid! I was working on my Honda Shadow 1100 trying to put some insulated fiberglass wrap around my exhaust pipes, and on re-installation I stripped one of the bolt holes. With my engine being a lot bigger than a lawnmower, would this method still be viable? I'm thinking about a possible change in compression, and how big of a difference I could be looking at
I have done this method on cars for several different reasons. I only used a lawn mower for this video for demonstrating purposes. I hope this helps. Thanks for watching. Please like, share, and subscribe.
My bolt connecting the carb to the engine is stipped. Its a 3/8 bolt but i cant figure out how to do what you did.. Can you send a link with the kit and if my bolt is slipping in and out wont i need a bigger bolt after rethreading? (I have never done this before im just working on a lawn mower) thanks.
I am assuming the threads are fine and not coarse, if so here is the link for 3/8-24 inch thread repair kit.amzn.to/2chC6gq The directions will be written on back of the kit, also what size drill bit that you should use. I hope this helps. If you do not know what size thread pitch you have, then please feel free to check this video out ua-cam.com/video/0JammBOVZ8w/v-deo.html . Any questions or concerns, dont hesitate to ask. Please like, share, and subscribe.
I stripped 3 bolt holes' thread/groove while changing my transmission fluid accidentally by over torquing it. Fluids been dripping out slowly per day and what kind of HeliCoil, size of drill, and tap will I need? Also how deep will I need to drill a bigger hole?
You have to find out what size and pitch bolt you have, which I showed how to do that in this video. Than you have to find the right helicoil set and follow the directions that come with the helicoil set. It also states what size drill bit you need. As for how deep you have to go, I don't know. I personally do not go any deeper than the hole already is. These videos are tutorials only on how I do things in hopes that it helps someone out. Thanks for watching and thanks for the comment. Please like, share and subscribe.
handy man do you have to use the drill bit before you use the tap? What'll happen if you just use the tap to create new threads w/o drill the hole first?
7150285 you always have to pre-drill the hole, and remember to keep straight. although you could size up with a slightly bigger tap and put a slightly larger bolt in it rather then using thread inserts. This would work if you have the room for a slighty larger bolt. EXAMPLE: if your striped hole was 1/4 X 20 tpi you could drill and tap using a 3/8 tap and 3/8 bolt
7150285 you would probably break the tap. Once that happens you will have a chunk of tap stuck in the hole that is impossible to remove, because you won't find a drill bit hard enough to drill it out. Whatever you are working on is now a boat anchor.
Thanks for commenting and watching. Here is a kit that has everything you need amzn.to/2jNblE1 . I hope this helps. Thanks for watching and commenting. Please like share and subscribe.
use whatever you want to turn a tap? I'm sure you don't include in that whatever any kind of power tool. The wrench you use is perfect. No rotary drills when driving taps PLEASE! Thanks for the video. I didn't know about these hellicoils.
Nice video. Trying to learn. Is re-tapping the stripped bolt hole with the same size bolt as original and "re-setting" the mangled thread, not an option? If not, why?
Thanks. After watching your video, I learned about thread chasers and therefore I ordered one in the size I need. A brand new $20 Harbour Freight torque wrench failed me on its first use and caused me to strip a small bolt hole on my commercial mower. It is a non-critical bolt so I am going to experiment a bit. Thanks again.
Probably not. It may be difficult to find one that even was the correct size and/or thread pitch. Self-tapping bolts or screws are okay with soft materials (like wood); not so much with metal. Another issue is that taps have 3 or 4 vertical slots in them to transfer the waste material out as you're tapping (or cleaning up the threads) in a hole. That eliminates jamming the waste material down into the hole you're attempting to clean up. Spend the money and buy a thread-restoring set, which will have both metric and SAE taps and dies. Alternatively, you can buy a Helicoil kit. Watch a few videos here on UA-cam to determine your options and the procedure you will need to follow to install one.
I am doing this job today on the same part on a ride on mower, i was installing a brand new head on my kohler courage and torqued the rocker stud to the spec. It got about 3/4 way there and then i felt it was not going to get there. Not what you want to feel on a new head.
The torque spec for my one is only 13.5 newton metres, lol it didn't take much, the repair all went well, i got a bit worried when the coil started getting a bit tight to turn in near the end but it got there. Thank you very much for your video, it gave me the confidence I needed to fix it.
Got a question not about a hole with stripped threads. I want to know if you can tap a hole with 12Mx1.25 to 12Mx1.75 with just a tap and no heli coil?
NO. You'll end up with a nice smooth hole with no threads. There may be enough steel bits from the "threads" left to screw the bolt in but it will strip immediately.
Why not go to 12 x 1.5 instead? You will probably need a drill bit to keep the threads from being too deep/long and breaking. I would think it can work if done correctly. Or you can also go to an even higher size and creating new threads with a totally different bigger size, assuming you have the space to do the work and fit the bolt.
I'm trying to fix my hole for my tension pulley bolt. How can I do that without removing the engine please help I got the tap and inserts and drill bit but I want to make sure I do it right without damaging the block.
+Fee Baby I don't know what your working on nor do I know what kind of room you have to work. So I can't really help you. But I can give you a tip. Some times the tip of the bolt gets boogered up and might only mess the first couple threads up in the bolt hole, so you might find out what the diameter and pitch of the bolt and chase the old threads as well as chasing the bolt threads or just get a new bolt. You might be able to do this especially if it's cast. I hope this helps. Thanks for watching and commenting. Please like, share, and subscribe.
Here is a variation of thread repair kits amzn.to/3ydeHdd Definitely check it out
That feeling of dread when it just keeps spinning. Ugh. WTF did I break now? This is by far the best video I’ve found on the subject. Thanks for posting.
I’m glad you found it useful. I greatly Appreciate your comment. Thanks for watching. Please like share and subscribe. Also please hit the notification tab 🔔
I broke the coil while tightening one of the bolt of my new exhaust manifold. Yap the bolt just keeps on turning after that. It was fixed now. I ended up replacing the washer with a thinner one just to chase the remaining coil.
It's not worser than a broken bolt
I feel the pain brother. I popped the threads on my oil cooler for a 17 wrangler
Still don’t be tempted to go ahead and try when u don’t have a clue , I just done to my 250 and I’ve made the threads worse helicoil failed and tool warped , take to pro or you’ll be a lot of money out of pocket
After watching I can't tell you how many videos for the helicoil installation, you are the first to tell me HOW to find out what size I needed to buy. I am sure there must be another video or two that gives that information but it has been frustrating seeing how to install one but not know how to decide the size to buy.
This was really great. Thanks for the help and Jesus bless.
Thank you . I greatly appreciate your comment and I appreciate you. Please like share and subscribe. God bless you also
you just saved me a lot of money. Stripped the holes my shock mount bolts on to on my car. Was about to take it somewhere to be professionally repaired, but I found your video and gave it a shot, and it's really quite easy. thanks a lot!
That was a great video. When tapping the bolt hole, I've noticed that the thread chips will break into smaller pieces if you unthread about a quarter turn for every turn that you thread the tap in. It results in a stronger threading and less stress on the cut. Also, you'' be able to tap the hole with less effort
Zer0 Yes you are correct. Thanks for watching and thanks for the comment.
I've seen other videos on helix coils and the last step was to knock out the small hook on the end of the coil but I didn't see you do this at the end of the installation of the helix coil.
i read many comments on how he should have tapped the hole by turning and then back, he did say it was an alum head which for sure is very soft compared to steel, i myself thought he was going to deep with the new threads, but this video does gives people the idea how to fix a bad hole, heli coil
When tapping it's best to turn forward a full turn then back half a turn to "break the chip" of the threads that you're cutting. By simply running it straight through you put a lot of stress on your tap, and removing a broken tap turns a bad day into a shitty day.
Amen to that.
Nah - that's easy, you just need to get one of those drill bits that can cut a beautifully straight core through a little chunk of hardened steel with a splintered-off top. I forget the brand of those bits, but they're usually on the shelf next to the broken camshaft glue.
Absolutely! Good catch! I saw that too.
Good morning. You are a great teacher. Now i must put this lesson to work on the crankcase of my car engine. Thanks🙂
Found two stripped bolt holes for the rotary valve cover on the block of my jetski after a full rebuild probably why the dam thing would run like crap with leaky compression. Anyway, watched this video and now i feel ready to get this fixed and get the carbs back on. Thanks!
this video gave me Forest whitaker eye. there is some mildly funny stuff like the bit not staying in and for the love of God use oil then follow proper procedure to use the tap. do not run the tap straight through it can cause issues and not cut correctly. That said Kudos for have a UA-cam channel and trying to help people it is more than i am doing
Yeah I should of used oil. I do take short cuts sometimes. Thanks for watching and commenting. Please like share and subscribe.
use cutting oil, WD40 spray will do, and each time you make a full turn clockwise do a half turn anti just to break the metal chips, just makes it a bit easier and less chance of error...but you did a good job anyway so I guess you have done it before!!
I rarely comment on videos, but good job, and thank you! I'll rethread one head bolt on my motor that got stripped while I was using a torque wrench as well.
Nice video.
Just a note that on the insert tool has a collar with a grub screw which you can lower to the top of the insert. This acts as a stop so you don't put the insert in any deeper than you need to, which can easily be done.
If it is too deep. in some applications, the bolt may only be caught on a couple of threads of the insert, which is not enough.
Also, you need to break the tang at the bottom when it's inserted. Just take the tool out slightly, turn 90 degrees, and tap it with a hammer/wrench/heavy-ish object :-)
Nothing like forgetting to break off the tang, and then ripping the helicoil back out with the bolt.... Been there done that. Novice mistake.
That's what my dad taught me too! I forgot that while rethreading the fuel inlet on my boat carb & bam had to go up the next size...& the metal was so thin @ that point I didn't want to chance it so 400 bucks went down the drain on a new carb lol
heli coils been around forever, good video, gives everyone an idea how to fix threads
Thank you for that. I greatly appreciate it
You can use the wrench shown in the video, of course, but you'll have an easier time of it using (1) A 12-point socket and ratchet, (possibly with an extension); (2) The closed end of a combination wrench; OR (3) A die handle from a tap-and-die set. I prefer the latter, but you need lots of space to turn it, which you may not have in constricted areas. However, it provides you a means to evenly distribute the force (think of it as a large T-handle wrench).
Thanks for watching and commenting. I greatly appreciate it
Going to try this right now for my power steering pump. Thank you!
I hope it worked out. Thanks for watching. Let us know how it turned our. Please like, share and subscribe.
Alexander Perez same thing I’m watching for
Thank you that was the best stripped bolt hole video I’ve seen so far. I stripped the bolt hole on my motorcycle valve cover and now I feel confident I can fix it. Thank you again.
Thank you. I am glad you found it useful. Thanks for watching and commenting. Please like, share and subscribe. I greatly appreciate you
Very cool. Thanks for this video. Without this video, i would have probably had to make a second trip for the drill bit, but now I know to open the manual and look for the size drill bit I need. Also, the bolt measuring gauge is a neat item to have around.
+Nicholas Maietta I’m glad you found this video useful. Thanks for watching and commenting. Please like share and subscribe.
handy man followed this example today... problem solved. Thanks again!
this vid is useful, it gives me idea i'm about to start re threading my aero roadbike with built in seatclamp thread on frame
thank you so much .....very handy tip on how to fix a stripped hole .........all the best !!
Thank your very much. Please like share and subscribe
Awesome repair. Totally loved this video. Man after my own heart as they say. Engineering made to look easy. 10 out of 10 dude. Thumbs up. :)
+James Barratt I am glad you liked it! Thanks for the comment and watching, I greatly appreciate it. You rock!
TIN TAIM combodia
you need to break off the install tab and take it out, also before installing heli coil you put on some red tread locker, otherwise next time you take the bolt out the heli insert will come out with it. I am surprise the little inspector who was watching in the beginning of the video did not say something and let you continue. He shows interest that is good.
Yes he is interested. They get old quick to. Thanks for watching and thanks for the comment.
I'm actually doing this on a hub motor wheel for an electric skateboard LOL thank you bunches and God bless 😎
No problem! Thank you for taking the time to comment. I greatly appreciate it. Good luck on your project. 👍
You can repair a M6 hole by using a BSF bolt 1/4 inch. It has the same pitch and is slightly bigger. M7 has also the same pitch, but is way thicker.
where do I get English bolts?
@@donwest5387you ask someone Who has an old,historic english motorbike. Or look for a club english motorbikes and ask. It is very common on a bsa and others.
Great tutorial. I'm restoring my 94 Pontiac Trans am and some of the 10mm bolt holes are stripped out on the fend well.... I just ordered a tap and die set...
I’m glad you found it useful , thanks for watching and commenting. I greatly appreciate it. Please like share and subscribe. Also please hit the notification tab.
@@handymanPF yes I'm a subscriber to your channel 👍🤙
I’m surprised that a 94 Pontiac will ever use a metric part
@@johnzhu5735 gm is mostly all mm
nice video..question: i got confused about the left hand bit (what does that mean) and started my drilling into the broken bolt counter-clockwise😟..idk if ive gotten totally to the end of the bolt, but if so is my only option to go to the next size drillbit and then rethread? thank you in advance
Thank you sénior, much appreciated. 🎉
Anytime! It is my pleasure. I’m always happy to help. Please like share and subscribe
This helped! Thank you! My bolt was same size you were dealing with. (M6x1x46.5) So that was a bonus.
Thanks for the informative video. I learned something new - never had to replace a thread....yet but now I know. thanks very much!
Great. I appreciate your comment and glad it was helpful.thanks for watching. Please like, share and subscribe.
it's nice when u have easy access to it
Fantastic tutorial HANDYMAN, thanks for you detailed video.
I’m glad you liked it and found it helpful. Thanks for watching and commenting. Please like share and subscribe.
Very Very Nice. I have a Bosch Router and want to re thread the bottom plate screw holes. They are small so I am still not sure what I am doing but this was a fantastic start. Thank You!
No problem, glad it helped. Thanks for watching and commenting. Please Like and subscribe.
I have to rethread valve cover. Should I Crack it open so I don't get shavings inside ?
Very good video now have a solution to a problem thanks for the video man.
kewlkiddo22 Great! Glad I could help. Thanks for watching and thanks for the positive comment.
does the taping has to go all the way down or just enough so the coil can be close to the surface?. or either way would have worked ? what make the coil to remain strong even using torque ? thank u
also guys youre supposed to break the install tab off the heli coil before installing the bolt..check other vids..
How do you do that?
Great demonstration! Can this apply to stripped machine screw hole on an alluminum Microtech knife?
okthat takes care of the hole, but can I reduce the diameter of a threaded rod? I bought the wrong diameter and was wondering if the screw can be made thinner and re threaded.
Insane intro with heavy editing. Followed by entire video with no editing. Lol
Thanks for the help
I’m glad you liked it. I greatly appreciate your comment. Please like share and subscribe. Also please hit the notification tab 🔔
There are also tangless inserts if you don't want to punch out the tang or leave it.
Can you just use the bolt on the threads cut by the tap? I have a tap set but no insert kit
Jacob Curley - Im thinking if you want to use the threads cut by the tap it will have to be a bigger bolt, and it might be too thick to go through the rocker arm, in this case.. By inserting the correct thread helicoil into the tapped hole, you have the same conditions for the original bolt, before it got stripped out..
my man, i just picked up a similar kit at McFaddendale's here in Vegas...i was informed we need to pop that tang end off before it's complete... not really?
Only four minutes in and already I have learned so much. Great video thank you!!!
+Dylan walker great, that’s what I like to hear. I’m glad you found it helpful . Thanks for watching and commenting. Please like share and subscribe.
"And it just keeps spinning." I love it
Haha, Glad you liked it. Thanks for watching and commenting. Please like share and subscribe.
So when you drill the damaged threads out. The actual size of the hole doesn’t increase? So that the original bolt will fit like a glove?
Majority of the time the hole is drilled slightly larger then the original size and then traced with the new threads. Because it would most likely be to tight if it was not drilled a little larger.
if you are tapping something you want to last or using a smaller tap which can break more easily you should really turn back 1/4 turn every turn
magga619 Thanks for watching. I always say follow the directions of the manufacturer. But turning back every 1/4 inch is a good tip for people to follow.
That is standard practice for anyone cutting new threads. The purpose to backing it up frequently is to break the thread material (slivers of fine metal) so they release and come out through the relief slots cut into the tap or die. If you didn't, you'd soon lock up the tap/die with slivers and be unable to proceed.
AND, ... you could break the tap itself, inside the job making it a really, REALLY SHITTY job to carry on with.
Do you necessarily need to drill a bigger hole and add a helicoil? Or can you just re tap the same hole
+Ian Thompson you have to follow the directions on the kit. But usually you have to drill the hole bigger. I hope this helps. Thanks for watching and commenting. Please like, share, and subscribe.
When you tap it.. Can you put a bigger gauge bolt in?.. Is the coil just so you can fit the exact same bolt?..
The coil insert is the new threads. If the application allows you to put in a bigger gauge bolt then I do not see why not. Just be careful. Most of the time you cannot go to a thicker gauge bolt .
Great job! You made it seem so easy.
Thank you very much. I greatly appreciate that
Great job what about the thread in a crankshaft the problem is the engine is still in the car radiator is removed for more room but still hard because if of air con condenser
Sounds tight. It also sounds like one of those jobs where I would actually have to be there to see exactly what’s going on. So I cannot advise anything over the internet without seeing the whole situation. I greatly appreciate your and also thanks for watching.
I was just wondering if thread locker is ever used or even needed on the threaded inserts (helicoil).? Thanks
It’s not a bad idea.
This guy does almost everything wrong but it worked. Look at other vids if you want better info.
That statement contradicts itself, that I did everything wrong but it worked. If it worked, then how is it wrong. Regardless , thanks for the comment. All comments are welcomed.
I sort of agree, he got the job done but the method was a bit careless and could easily have gone wrong.
He should have removed the head before doing any drilling, leaving it on the engine like that is asking for trouble. The metal shavings could have easily gotten into the engine, especially when removing the paper towels AND using the air gun to blow them off. You could see the left port was exposed.
The drilling and subsequent re-threading should be done using some sort of assembly that holds your tools at the right angle and prevents movement.
I have to say this is a good example of non-professional backyard mechanics. I think the guy know what he's doing and he's got experience but what also shows through is the slack, approximate way of getting things done.
Jeremy Lindemann yeah yeah Git R done!!!
good comment but., sometimes backyards jobs are million times better than pro job ., mechanics are careless and I don't want to say assholes ., every time I bring my car to the pros . they fix it but give me another problem the last time my car was making a weird noise he say it was inside the water pump he change it doing a good job but the noise still there and he give me the check engine light on , when I told him about it after he use the scanner and saw the code his answer was in a really bad mood you can go to California with that light ., honestly mechanics are rats., every time I do a backyard job I do a very amateur job in many hours but with better results.,
Please link to a better process.
I ha e even gone out an bought a helicoil kit now. The tensioner bolt side mounted for cam belt lost its thread and I really wanted a solution without change the lower half of the engine, and now I have one. Bummer though, to get access to it I have to use a right angled drill attachment doing a 8mm 1.25 helicoil. So first ever helicoil going to be tougher than most I recon. Ha ha
+James Barratt yeah that sucks. I hope it worked out. I'm glad you found the video helpful. Thanks for watching and commenting. Please like, share, and subscribe.
It did work out perfectly first time. Real easy system with flawless results. I didn't have to use a bolt chart either, as i measured the bolt with a tape measure and then measured the thread gap same procedure and just went for it. 8 x 1.25. Thanks to you and this video I fixed a cam belt tensioner and saved the engine. Ha ha
I had a hard time getting the flywheel off of my 50cc Chinese scooter. it seems the threads are messed up on the post that protrudes through the flywheel that the locking nut goes on. I'm not mechanically inclined can you suggest what to do?
I currently need to rethread a hole in my brake caliper mounting bracket for the guide pin bolt, would this be a possible solution, considering the bolt opening is open ended?
Caliper mounting bracket guide pin has no (male) thread. It just slides in and out. If you are taking about the hole on top of the guide pin which is used to hold the piston unit, then yes the guide pin does have (female) threads. However, why not change the guide pin itself? you will be changing both at a time! Easy and most imp, safe!
I’m here for this exact reason
Hi there,
I got a couple of questions.
1) why do impact guns do no harm to wheel nuts but yet can strip the threads of bolt holes? Where I live, mechanics use impact guns to fasten wheel nuts all the time.
2) Can tightening subframe bolts with an impact gun instead of a torque wrench cause the chassis' treads to be stripped? (I suspect this was what happened to my car, the handling is a little off now. An amateur foreman might have overtightened something).
Andrew Chan funny you say that. My wheel hub and lug nut are stripped from impact gun. I need to do this to wheel hub so I don’t have to pay $1,000+ to replace the wheel hub. Exactly why I watched this video! Hope it works!
I have a M16.5x1.50 bolt hole that I need to rethread what size should I use?
Liked the Air raid siren in the background.
Haha, at that time I lived about a 1/4 mile from the firehouse. I didn’t even realize how loud it was because I was so use to the siren. Thanks for watching and commenting. Please like share and subscribe.
Beautiful video. Clear and concise how it should be.
Thank you for the comment and thanks for watching.
Excellent vid. Thanks.
It looks like when you retap you are using the same diameter, but if the thread was stripped I don't understand how this is possible. Shouldn't you have to retap with the next size up in diameter since there shouldn't be enough material on the existing diameter to do the job properly?
It is being tapped to the next size up.
handy man I think I understand, you tap the hole to the next size up but the insert screws in using the next size up, but the internal thread of the insert is the old size for the original bolt? Thanks
Same size hole, or did u have to go make it bigger?
Good video. Im going to refer to it as I re-thread my crankshaft snout bolt hole. Only a 1/2 inch porttion at the beging of the hole is stripped. My bolt is 14mm with 1.50 pitch. I'm goimg to drill the 1/2 inch portion with a 14.5mm drill and them use a 14mm hand tap (plug type). Any opinion? Wont hold you to it if I screw up (lol). Also. are the coils necessary ?
Been researching for couple of weeks, never done before, got to soon. Kia wants $800.00 bucks......not going to happen.
10 years later, I'm here to learn 🎉
2014 chev cruise and someone stripped out a valve cover bolt. M6 30 with E10 socket bolts. What would I drill and retap bolt hole with?, drill bit size and rethread size?
You can try this kit. It comes with everything you need including the drill bit amzn.to/3J0At4w
what about a stripped bolt hole in the rear differential? does the differential and drive shaft need to be pulled in order to heli coil it perfectly straight or can it be done on the car? also with the amount of torque it has will it hold up well?
Just found out that my trans mount has a stripped bolt hole.Explain to me why the coil gos in or mainly what purpouse it serves.
Morgan Meyers The coil becomes the new threads. Usually made of stainless steel.
I just did this and my bolt doesn't go down All the way the rocker arm still had some play🤦🏿♂️ so I tried getting out the thread but it doesn't want to come out so I tried Retaping it out in snapped the thing that wholes the rocker arms set in place then I tried drilling it out and that snapped the drill bit inside 🤦🏿♂️ can't win I did rocker arm all the time but this one time the bolt just had to be stripped 🤷🏿♂️🤦🏿♂️🙏🏾
You rethread the same size or bigger?
I have a stripped transmission f bolt hole on the right side of the transmission. Any help would be nice i don't want to drop the transmission. . thanks
Great video. Learn something new every day. I didn't know there was such a thing as a Helicoil (to be used with a Tap). Just when I start to think I know a lot ;) Thanks for the enlightenment.
lol , no problem. Thanks for watching and commenting. Please like, share, and subscribe.
any tips for your bolt being a oil drip bolt on a dirt bike so no debris goes in while re threading?
A few days ago I stripped transmission drain threads. I’m thinking to re-threads it but if I do that do i need a bigger bolt? I’m think the drain hole will be slightly bigger there for I need big bolt.
They do sell these and here is the link
amzn.to/2R2eGCM I hope this helps. Just make sure you know what size it is , you can watch this video to help figure out the bolt size and thread pitch ua-cam.com/video/0JammBOVZ8w/v-deo.html
I hope this helps. Please like share and subscribe. Thanks for watching and commenting.
Thanks for the vid! I was working on my Honda Shadow 1100 trying to put some insulated fiberglass wrap around my exhaust pipes, and on re-installation I stripped one of the bolt holes. With my engine being a lot bigger than a lawnmower, would this method still be viable? I'm thinking about a possible change in compression, and how big of a difference I could be looking at
I have done this method on cars for several different reasons. I only used a lawn mower for this video for demonstrating purposes. I hope this helps. Thanks for watching. Please like, share, and subscribe.
This was very helpful 🙌🏽
Great, I’m glad you found it useful. Thanks for watching and commenting. Please like share and subscribe
My bolt connecting the carb to the engine is stipped. Its a 3/8 bolt but i cant figure out how to do what you did.. Can you send a link with the kit and if my bolt is slipping in and out wont i need a bigger bolt after rethreading? (I have never done this before im just working on a lawn mower) thanks.
I am assuming the threads are fine and not coarse, if so here is the link for 3/8-24 inch thread repair kit.amzn.to/2chC6gq The directions will be written on back of the kit, also what size drill bit that you should use. I hope this helps. If you do not know what size thread pitch you have, then please feel free to check this video out ua-cam.com/video/0JammBOVZ8w/v-deo.html . Any questions or concerns, dont hesitate to ask. Please like, share, and subscribe.
I stripped 3 bolt holes' thread/groove while changing my transmission fluid accidentally by over torquing it. Fluids been dripping out slowly per day and what kind of HeliCoil, size of drill, and tap will I need? Also how deep will I need to drill a bigger hole?
You have to find out what size and pitch bolt you have, which I showed how to do that in this video. Than you have to find the right helicoil set and follow the directions that come with the helicoil set. It also states what size drill bit you need. As for how deep you have to go, I don't know. I personally do not go any deeper than the hole already is. These videos are tutorials only on how I do things in hopes that it helps someone out. Thanks for watching and thanks for the comment. Please like, share and subscribe.
handy man do you have to use the drill bit before you use the tap? What'll happen if you just use the tap to create new threads w/o drill the hole first?
7150285 you always have to pre-drill the hole, and remember to keep straight. although you could size up with a slightly bigger tap and put a slightly larger bolt in it rather then using thread inserts. This would work if you have the room for a slighty larger bolt. EXAMPLE: if your striped hole was 1/4 X 20 tpi you could drill and tap using a 3/8 tap and 3/8 bolt
7150285 you would probably break the tap. Once that happens you will have a chunk of tap stuck in the hole that is impossible to remove, because you won't find a drill bit hard enough to drill it out. Whatever you are working on is now a boat anchor.
I have a hole I'm trying to retap. The bolt size is M6-1. What drill bit and tap will I have to use to retap this hole???? Thank you in advance.
Thanks for commenting and watching. Here is a kit that has everything you need amzn.to/2jNblE1 . I hope this helps. Thanks for watching and commenting. Please like share and subscribe.
Great video! Impressive work, thank you sir👍
Thank you for watching and commenting. I greatly appreciate it. Please like share and subscribe and hit the notification tab 🔔
use whatever you want to turn a tap? I'm sure you don't include in that whatever any kind of power tool. The wrench you use is perfect. No rotary drills when driving taps PLEASE! Thanks for the video. I didn't know about these hellicoils.
Nice video. Trying to learn. Is re-tapping the stripped bolt hole with the same size bolt as original and "re-setting" the mangled thread, not an option? If not, why?
You can try to chase the threads but they will most likely be weaker depending on the application. I hope this answered your question.
Thanks. After watching your video, I learned about thread chasers and therefore I ordered one in the size I need. A brand new $20 Harbour Freight torque wrench failed me on its first use and caused me to strip a small bolt hole on my commercial mower. It is a non-critical bolt so I am going to experiment a bit. Thanks again.
Can you do this on aluminum block?do you have spray wd-40 while you tapping so it doesn't get hot or no?
Yes depending on what you are doing. Yes you have to use oil while tapping, I know I did not in this video but you are supposed to
I didn't use a drill but the coil is installed and seems good?
Will a self drilling bolt help restore minor thread damage if used like a tap?
Probably not. It may be difficult to find one that even was the correct size and/or thread pitch. Self-tapping bolts or screws are okay with soft materials (like wood); not so much with metal. Another issue is that taps have 3 or 4 vertical slots in them to transfer the waste material out as you're tapping (or cleaning up the threads) in a hole. That eliminates jamming the waste material down into the hole you're attempting to clean up. Spend the money and buy a thread-restoring set, which will have both metric and SAE taps and dies. Alternatively, you can buy a Helicoil kit. Watch a few videos here on UA-cam to determine your options and the procedure you will need to follow to install one.
What's the difference between doing it this way and heat treating it
I am doing this job today on the same part on a ride on mower, i was installing a brand new head on my kohler courage and torqued the rocker stud to the spec. It got about 3/4 way there and then i felt it was not going to get there. Not what you want to feel on a new head.
Yeah, that’s what happened too this one. I think the torque specifications are wrong
The torque spec for my one is only 13.5 newton metres, lol it didn't take much, the repair all went well, i got a bit worried when the coil started getting a bit tight to turn in near the end but it got there. Thank you very much for your video, it gave me the confidence I needed to fix it.
V detailed, subscribed
why do you need to insert a coil? isn't the rethreader enough?
Does it work on metal like the Block ?
SHOULD YOU USE A SMALL AMOUNT OF OIL WHEN USING THE TAP
Yes. I didn’t in this video. But yes you should.
Metal fill, machine drill, and rethread....... waaaaay better.
Do i need a insert if im re threading a bleeder
Got a question not about a hole with stripped threads. I want to know if you can tap a hole with 12Mx1.25 to 12Mx1.75 with just a tap and no heli coil?
NO. You'll end up with a nice smooth hole with no threads. There may be enough steel bits from the "threads" left to screw the bolt in but it will strip immediately.
Why not go to 12 x 1.5 instead? You will probably need a drill bit to keep the threads from being too deep/long and breaking. I would think it can work if done correctly. Or you can also go to an even higher size and creating new threads with a totally different bigger size, assuming you have the space to do the work and fit the bolt.
i have a oil drain hole stripped so i would need that little piece removed. how would i do that?
Fantastic! Thanks! 🎸😃
Can you retread a hole that has already been rethreaded for a spark plug
Can I do this on a cable tensioner bolt?
I'm trying to fix my hole for my tension pulley bolt. How can I do that without removing the engine please help I got the tap and inserts and drill bit but I want to make sure I do it right without damaging the block.
+Fee Baby I don't know what your working on nor do I know what kind of room you have to work. So I can't really help you. But I can give you a tip. Some times the tip of the bolt gets boogered up and might only mess the first couple threads up in the bolt hole, so you might find out what the diameter and pitch of the bolt and chase the old threads as well as chasing the bolt threads or just get a new bolt. You might be able to do this especially if it's cast. I hope this helps. Thanks for watching and commenting. Please like, share, and subscribe.
that was a nice thread and bolt gauge, where did u pick that up? I saw the link form the one on amazon but I particularly like the one you have
amzn.to/2TDMjsR