I’ve heard a lot of people talk about fixing aluminum threads with JB Weld. I’ve got the perfect application, so will put it to the test. This application has no heat on it, it has a torque spec of about 18 foot pounds.
Пікірлер: 101
@hraffenschwanz36782 жыл бұрын
You should completely fill the hole, let it cure and then re-tap it. Putting an oily bolt in there will only serve to prevent the JB Weld from curing properly.
@josephoo7 Жыл бұрын
Why would oil stop it from curing? The polymerization occurs independent of the environment.
@buttadog50736 ай бұрын
That's exactly what I thought
@buttadog50736 ай бұрын
@@josephoo7oil has very good cohesive properties meaning it likes to stick to itself very well, this ends up with a layer of fluid on the bolt that would take up space where the new threads should be making the actual threads weaker. If you fill the hole entirely and tap it your thread fitment will be much tighter and less likely to slip. I saw a video where the guy threads and taps JB weld in an aluminum block and he was putting a face load on the head of the bolt that took over 2000lbs of force before the threads failed, it was a 1/4" thread
@dmcd73332 жыл бұрын
The ATF fluid messed up the strength of the jb weld. No mold release needed if once it cures you back out the bolt. I have used this on valve covers 6.5ft lbs and head bolts 20ft lbs.
@Mohapi_Tau2 жыл бұрын
You talking about threads for cylinder head bolts that hold it the block?
@dmcd73332 жыл бұрын
@@Mohapi_Tau yes, i have have to use JB weld on the block to the head as well as valve cover to head an never had a problem torquing the bolts out after letting the JB weld setup. Using release oils only degrades the tensile strength of JB weld.
@Mohapi_Tau2 жыл бұрын
@@dmcd7333 Ok so won't the JB break when the bolt is hardened on to it and you back out the bolt?
@dmcd73332 жыл бұрын
@@Mohapi_Tau I have not had that problem with quality steel automotive bolts....but be careful with aluminum bolts they shear much easier. Pam anti stick spray that you use for cooking you spray on your finger and lightly apply to aluminum bolts...this will not degrade jb weld like an actual oil will. Good luck.
@TheMightyJessMan5 ай бұрын
If you use anything as a release agent with epoxy it should be wax. A candle or a crayon rubbed on the threads would work fine.
@joegriffin66993 жыл бұрын
You'd get a lock nut behind that mount.
@gzhang2074 жыл бұрын
Since the threads are partially damaged/stripped, how about re-creating the threads to the next larger size and using a larger bolt as a permanent solution?
@livefree68784 жыл бұрын
Sounds like a great idea, I’m not really liking the idea of putting a Heli coil in there. Thanks for the suggestion. That’s probably the directional we will go👍👍
@011CJ Жыл бұрын
@@livefree6878 heli coils are junk unless Thay can bottom out on the threads .should use the next size bolt up and just cut new threads or sins it went all the way threw u could have just used a nut in the other side and thru bolted it
@michaelh7527 Жыл бұрын
At first I thought you were saying helicoils are junk 😂. But your right, they need to be bottomed out unless it's a very low torque and small bolt.
@dirtyaznstyle4156 Жыл бұрын
@@michaelh7527 why what happens? You drill and tap the hole to fit the helicoil so it sits in its own set of threads and the coil matches the thread pitch. So how would a blind hole be better than one that passes all the way through? The insert isn’t supposed to bottom out in a blind hole to begin with whether you use a bottom tap or a plug tap. Even with a bottom tap, good threads don’t go all the way to the bottom of the hole because you can never drill a blind hole out to the very bottom for retapping. The fastener never bottoms out in a blind hole either you’re just asking to crack the material.
@lElektrongeek4 жыл бұрын
You should try some helical inserts they work very well !
@livefree68784 жыл бұрын
Thanks, I saw a lot of people re-creating threads like this but I never actually saw them put torque on them. At least now I know.
@cameraman12345678904 жыл бұрын
@@livefree6878 I used JB weld with Heli-coils to get my seadoo head bolt some proper threads, downside is it destroys the threads on the bolt, Im going to try tapping the JB weld tomorrow with actual bolt threads to see if it makes it to 17 Ft-lbs, Im using JB Marine Weld with a tensile strength of 5050 PSI, and the threads are 1.25 inches long. I have reason to believe if the JB weld is Drilled and tapped with threads correctly then left to sit a bit longer it becomes alot stronger, but Im going to test this theory. Putting a bolt in the hole and using a release agent ive heard causes uneven weak points as it cures, it also can slightly damage the threads, also mixing it like a cake adds air, gathering it up and spreading it out also causes weak spots. Will reply back if it breaks.
@firesquad61505 ай бұрын
@@cameraman1234567890how’d it go? Doing this on my dirtbike
@SVSparklemuffin2 жыл бұрын
Good to know, thank you for this!!
@thecentralscrutinizerr2 жыл бұрын
What about adding some steel wool shavings to the JB Weld?
@josephoo7 Жыл бұрын
Steel wool would not work too well, it's too fine to let the epoxy fully saturate it. I think something more like a stainless steel dish scrubber would be stronger and let you mix in the epoxy better.
@bitchybecca5752 жыл бұрын
How about filling the hole up and then retyping it to that size
@darkshadowsx59492 жыл бұрын
i dont thing " retyping it" is going to fix the hole unless he spelled hole wrong somehow.
@Mohapi_Tau2 жыл бұрын
@@darkshadowsx5949 im sure he/she meant 'retapping'
@beep8134 жыл бұрын
im curious as to how malleable jb weld is well after its curing period; the product is marketed as being very resistant and holding high amounts of tension but wouldnt it be counter productive to 'cut' into it with a bolt's threads? kind of like carving wood. nice vid, thx!
@chaoslord89183 жыл бұрын
JB Weld says that it's threadable/tappable. I've never done it, but I would fill the hole a bit more (maybe even all the way), then hit it with a thread tapper. Also, he's using Marine JB Weld, which may not be as strong as the original.
@homerbob81153 жыл бұрын
The only good succesful use of jb weld i had was to fix a a small hole in fuel tank. Wenever the part is subject to a stress you can be sure jb weld will fail
@chriscs90803 жыл бұрын
Depends .. of you use it for low torque bolts it should work fine.
@urgentcareguy33 жыл бұрын
JB Weld specifically says DO NOT USE ALCOHOL. Your issue is residue.
@darkshadowsx59492 жыл бұрын
or they mean dont drink alcohol while using the product. i would hate to wake up in the morning to a sloppy drunken mess and jb weld everywhere it shouldn't be. ipa dries with no residue. if you got residue its contaminated.
@urgentcareguy32 жыл бұрын
@@darkshadowsx5949 Not true. IPA leaves a residue. Otherwise you could soak an O2 sensor in it.
@dirtyaznstyle4156 Жыл бұрын
@@urgentcareguy3 what residue is that though? Because isopropyl alcohol isn’t anything but that and distilled water I believe to dilute. Denatured alcohol is ethanol with I believe methanol to make it undrinkable. All alcohol is miscible with water so it’ll absorb moisture from the atmosphere and dilute itself eventually but does that really mean the residue is water? 91% isopropyl alcohol works fine as a solvent wipe for paint prep on metal so 🤷🏽♂️ L
@urgentcareguy3 Жыл бұрын
@@dirtyaznstyle4156 I would contact JB.
@jskjsk39863 жыл бұрын
Exactly what I was looking for. Thanks.
@htatesil41923 жыл бұрын
How did it work
@chriscs90802 жыл бұрын
@@htatesil4192 it does not
@htatesil41922 жыл бұрын
@@chriscs9080 yepp I just got inserts way better
@MKEzz3 жыл бұрын
Excellent video and guidance. Many thanks to you. 🌺🌺🌺
@memybikeni99317 ай бұрын
I’ve tried completely filling the whole and drilling/taping, didn’t work, just crumbled up, it’s not good for this type of application.
@fabiandee8178 Жыл бұрын
thanks for the tips
@francescomereu682 Жыл бұрын
congratulations nice work, but where did you put the screw in a jar of oil? if so and not to stick to the glue jb weld ?
@livefree6878 Жыл бұрын
Typically I put oil on A cloth and rub it into the screw, too much oil to make a mess. It’s not the strongest thread, But in some applications it works.
@Maybe_XenOn Жыл бұрын
You should try out the HI heat JB weld stick putty
@Ibuildsht6 ай бұрын
I'm using it rn as he did I hope it works I don't need but like 11lbs
@davidschmidt60132 жыл бұрын
This is what happens when people get even a bit careless with impact drivers.
@mikefennema55612 жыл бұрын
With aluminum you can succesfully tork two or three times then it will fail at the rated torque on subsiquent torquing. Found this out the hard way on a timing belt replacement on an older car I owned and maintained from new.
@SevenDeMagnus Жыл бұрын
It's not possible coz' epoxy is still plastic but aggragates that are hard should be added to the epoxy (shredded carbon fiber will strengthen it to aluminum strength). 50/50 ratio. God bless.
@Hook-set_Outdoors Жыл бұрын
What do you think JB weld is?
@buttadog50736 ай бұрын
JB weld has steel in it already. If you add shit too it it will just make it weaker
@SevenDeMagnus6 ай бұрын
@@buttadog5073 JB Weld via email said for more strength add fiber glass (the smaller the better) but I add carbon fiber strands instead (cutting it myself as small as possible) but it shouldn't be more than 10% of the fiber glass said the JB Weld representative who emailed me back (I guess the strands are like bigger aggregates on top of the small small metal in JB Weld original). Thanks. I tried it, tested a sample, it is tougher with the fiber glass and carbon fiber. Though the regular viscosity carbon fiber and fiber glass epoxy is a bit harder than JB Weld I tested at least when you scrape it off the surface or break the small sample into (little explosion for both there's not in between, but the carbon fiber/fiber glass epoxy's took more force on its own- by a bit, not significant).
@andyg8177 ай бұрын
Yes jb weld it will hold the bolt in place maybe.. lol.. but in /out all time, sceptical...
@DieTabbi3 жыл бұрын
These electronic footmeter is awesome. Where can I buy it and can I use it for newton meter?
@snoopdogie1872 жыл бұрын
Pittsburgh is Harbor Freight brand
@brandonlogan26002 жыл бұрын
Use it dry man. I use JD weild to fix the threads on the pressure plate bolt when I did my clutch. I broke off the bolt originally. Had to wait and was freaking out. I drove on a imbalanced pressure plate spiking my blood pressure shifting into 4th gear cause of the vibration. I waited for the bolts to come in from o online. I tried to drill the old bolt out I got it out but only in pieces 🤣 but the thread were damn near gone. A little be was left. I put JB weld around the new bolts and threading it into the hole THANK GOD my pressure plate balanced and it drove and shifted smooth 😎 that jb weld is literally holding til this day
@Mohapi_Tau2 жыл бұрын
wont the jb break when you back out the bolt if it is in dry?
@AS-ug2vq2 жыл бұрын
@@Mohapi_Tau no, you wait for it to cure partially then back out the bolt
@brandonlogan26002 жыл бұрын
To this day I can till you cause I haven't had to change the clutch again its still good
@brandonlogan26002 жыл бұрын
My booger bushing in my shifter cable to gear shifter knob on a different car broke The original booger bushings thinned out and started to rip I used permatex black oil resistance , to stick in back together JD weld to cap it and keep it in place and then Flex Seal to make everything Stick together, flexible , and solidify.
@Mohapi_Tau2 жыл бұрын
@@brandonlogan2600 any videos available?
@idronecharpifpv893 жыл бұрын
I would have filled the whole, drilled into it and the re tread! Oil and JB. Do not work together! All the clean you did went out the window the moment you used oil!
@walletphonekeys3 жыл бұрын
So it's better to use dry?
@idronecharpifpv893 жыл бұрын
@@walletphonekeys YEs, JB Weld needs to be use dry and in a very clean surface
@joses2083 жыл бұрын
Use wax
@walletphonekeys3 жыл бұрын
@@joses208 what's that
@lex_one-two3 жыл бұрын
@@joses208 what kind of wax... From where?
@bobgreene28923 жыл бұрын
Where did you buy your brush for the bolt hole? I can find no brush that small.
@waynemizer49122 жыл бұрын
Gun shop or from any gun cleaning kit of the right caliber.
@darkshadowsx59492 жыл бұрын
@@waynemizer4912 yeah just be careful not to load a bullet into the hole thinking its your revolver.
@jjh727 Жыл бұрын
You failed the process from the GetGo
@mattcampbell477710 күн бұрын
Tried it 3x, did not work at all.....weld the Aluminum hole full and re-tap it, don't take short cuts.
@darkshadowsx59492 жыл бұрын
i would have just thrown the jb weld in the trash and drilled the hole out and tig welded an aluminum sleeve in it and tapped it. i tried jb weld fixes before and they always break later. the stuff doesn't hold pressure very well.
@Mohapi_Tau2 жыл бұрын
where would you get an aluminium sleeve for a bolt from?
@JL-el9kb2 жыл бұрын
The transmission fluid used completely fucked the JB weld... Fill hole. Drill out. Tap hole. Torque down. Save your ass in a pinch. Not really that best way though. Drill out and sleeve with metal and then tap the new metal would be proper. Or fill with weld and drill and tap.
@AcuraAddicted11 ай бұрын
The amount of money spent on tools to tap and effort spent on this is simply not worth in this particular case.
@Neo-tn1mc2 жыл бұрын
Ya gotta be kidding! Common sense its weak 3000psi shear 500 tensile at best at 70°f Get a Helicoil insert kit !
@dirtyaznstyle4156 Жыл бұрын
Lol to hold on a belt tensioner pulley? One of three bolts? Like it’ll ever see 100 psi
@Neo-tn1mc Жыл бұрын
@@dirtyaznstyle4156 you have to understand why a bolt is torqued. 18lb/ft wasn't acceptable. He got almost 5lb/ft and started getting plastic creep. Add heat from engine and it will really lose strength. A typical easier repair is a heli coil
@rogerwebb2058 Жыл бұрын
Are you even serious? You clean the hole with alcohol and then contaminate it with transmission fluid? Seriously? LOL!! Why on earth would anyone do something like this???
@adamdistortion8810 Жыл бұрын
Lol? Because the bolt needed to be lubricated so you can get it off the jb weld. If he didnt use any lubricant, the jb weld would just come off with the bolt. U ignoramus fool, dont laugh at people when you dont even know how to use half the tools hes using
@dirtyaznstyle4156 Жыл бұрын
Tbh the hole wasn’t contaminated with transmission fluid. The hole was cleaned with alcohol, dunno if that’s recommended with jb Weld but it’s better than nothing. Higher percentage than 70% and a fresh bottle at the very least but I’m thinking acetone or xylene cuts oil better. He put the jb weld in the hole first though so none of that transmission fluid coating the bolt should have come in contact with the hole. The layer of jb weld was probably too thin to not be thoroughly contaminated and transmission. Fluid mixed into it. I can see it working if the depth of jb weld was more than a screw thread or two. Mostly fill the hole, let it start to set up and then screw the bolt in but then it’s a structural repair 😂
@dave12832 жыл бұрын
Answer: No. JB Weld never works for what you need. I don't know how they can legally sell it, but I guess there's a sucker born every minute.
@adamdistortion8810 Жыл бұрын
Lol ur so slow. Jb weld is gasket maker. Almost all car makers use it as a gasket instead of an actual gasket. Front timing covers,oil pans, some even valve covers, a bunch of stuff. And it holds well. Dont be ignorant cause it didnt work for whatever dumb idea you had
@dave1283 Жыл бұрын
@@adamdistortion8810 The fact that you have resorted to name calling and insult attempts proves I am right.
@adamdistortion8810 Жыл бұрын
@@dave1283 u disprove yourself with that logic. Ignorance i swear. I wouldnt have commented if you werent such a "sucker"
@dave1283 Жыл бұрын
@@adamdistortion8810 The fact that you have resorted to name calling and insult attempts proves I am right.