Get a thread-identifying 'go/no-go' tester, like the one in this video, here: amzn.to/45M70Ws
@grantleyhughes Жыл бұрын
Ordered and with thanks. I thought these only existed at retailers stuck to a wall.
@maisydaisy9970 Жыл бұрын
Can you take your hat off, my friends and I want to see the circumcision scar.
@troubleshooter1975 Жыл бұрын
Be aware when using thread gauges that with two thread pitches for each diameter, and two different systems, that two nearest (adjacent) pitches can differ by maybe only one 'tooth' over say 1/2" or 10mm... That can mean the that teeth may malign only a quarter of a tooth every 3 or 4 threads. You very often CAN thread a bolt into the WRONG size gauge for 3 or 4 full turns into the gauge. If the bolt starts binding after 2-4 full turns, you have the WRONG gauge! Try the other system gauge... Mr KL
@troubleshooter1975 Жыл бұрын
@@grantleyhughes The builders store style are actually listed for purchase, like here: Are links not allowed?? How can the OP post them then?? search for: menards inch-bolt-gauge 89987 menards metric-bolt-gauge 89986
@darthvader8433 Жыл бұрын
I've got a fastener shop near me which went out of their way to find what I needed. I went there with a sample when they were not busy. Maybe saying "you probably won't have this, but..." helped too, everyone loves proving a doubtful bunny wrong!
@grantleyhughes Жыл бұрын
Ask anyone who worked with the Sierra Cosworth Group A race cars. They found the head bolts were stretching under boost after replacing several head gaskets that failed too. The new repllacements became threaded rod that ran to the bottom of the block and big heavy washers and nuts held the head down made by AP Racing. And that's at the pinnacle of Group A racing. I love these videos John. Thanks again.
@AutoEngineerVideos Жыл бұрын
Regarding bolts that aren't torque to yield, but are marked in service manuals as needing to be replaced, this is usually because of two different reasons that are caused by the same thing: 1: The surface coating of the bolt and/or nut has been altered (crushed, galled, scraped off, etc) in doing it up and removing it. This alters the friction characteristics of the bolt and nut, meaning it will be given a different stretch for the same torque, and hence it will have a different clamping load the second time it gets torqued. 2: Because of the same disturbance of the coating material, the second time the bolt and nut are torqued, they could come undone. It seems strange to think that this might happen, but it does, and I've had to implement a fix for a nut that wanted to come loose the second time it was torqued. Also note that the coating on the bolt and nut are important as far as the torque setting is concerned if you need to be assured that you'll achieve the right clamping load. A hot dip galvanised bolt and nut will need a considerably higher torque for the same clamping load when compared to an electroplated zinc bolt and nut (which are usually put through hydrogen de-embrittlement heat treatment immediately after coating). Painted zinc flake will be considerably different again, and so are the different types of chrome plating. For instance, for one project I worked on, with all else being equal, a hexavalent chrome plated prototype bolt required about 30% different torque setting than the design spec black oxide coated bolt, to get the same clamping force (I can't recall if the hex-chrome required more or less torque than the black oxide, but a bolt specialist did the testing with his clamping force testing rig and ultrasonic bolt stretch measuring equipment, so the results were real, not imagined). For some components, 30% less clamping load than the spec can lead to the part moving under load, causing the bolts to loosen, while 30% extra clamping load would cause plastic deformation of the bolted component, causing component failure during installation (while the bolt itself would still be OK). Needless to say, when getting non-genuine bolts and nuts, you need to ensure that you also get the same coating as the original bolt/nut, not just the same size and grade.
@garrywest8511 Жыл бұрын
Howdy John, I play with older Land Rovers, yes I'm sick, on 300TDIs Land Rover manuals generally say you can reuse 3 times and some other manuals say you can reuse 5 times. But if the job , in front of me is new to me I'll always start with fresh bolts, generally about $100-$130, very cheap insurance and piece of mind, definitely not a luxury.
@IansMusical Жыл бұрын
Thanks John, I appreciate you taking the time to produce a video to address my comment. I hope it's useful to other viewers too. Greetings from the UK.
@georgecurtis6463 Жыл бұрын
Not for all situations. I worked on mercedes my whole career. Because we had no real rust issues we basically reused all fastners. As to internal engine bolts, the few that ever needed work, all bolts were replaced. When mercedes went to stretch head bolts, it didnt take long for us to find that the head bolts needed to be replaced regardless of measurements. Cold bolts change when they get hot.
@mwds5240 Жыл бұрын
Thanks
@mjrmotors3558 Жыл бұрын
Hi John I’ve been a motor mechanic for about 30 years now. I have encountered a lot of beard strokers and people that think they can fix cars. I feel your frustration. Workshop manuals instruct you to measure the thickness (a specified distance from the head)of torque to yield bolts and if out of spec replace them. Should I dare mention and open another can of worms, for you to demonstrate torque wrenches with a strain gauge? (Digital torque wrench?
@iancarrington1967 Жыл бұрын
I have a classic Lambretta scooter. It was 45 years old when I bought it so I rebuilt the engine from a bare case . Everything was replaced including the lay shaft which holds the rear hub to the engine. Never scrimp on safety critical parts .
@aaronfischer7199 Жыл бұрын
The requirement for the replacement of modern fasteners. Is the fact that they are torque to yield . They place the fastner in to its plastic region. Previous design bolts were designed to place the fastner in to its elastic region. Primarily designed for manufacturing tolerance in bolt tensioning (torqueing)equipment . The modern practice of a torque setting and then an angle setting ie 36nm+ 90 degrees + 90 degrees. Allows the fastner to be set accurately in to the plastic region of the fastner. This allows the compressive nature of the bolt to apply load under what ever temperature,cyclic load or random excessive event . And still remained tensioned for the expected life cycle of the component. Aftermarket performance fastners are designed for one purpose in mind. Reliability in the extreme conditions.
@johnstuart3851 Жыл бұрын
Excellent explanation regarding torque to yield bolts. Another way to describe the behavior of torque to yield head bolts, is to imagine a huge coil spring compressed down onto the cylinder head, providing the required clamping load on the head gasket, that is fairly constant regardless of engine temperature. In the case of an aluminum head bolted to a cast iron block, the cylinder head actually moves around relative to the head gasket and engine block during temperature changes, and as engine loads vary. Torque to yield head bolts allow for this head movement with mostly constant head gasket clamping load, improving head gasket performance, reliability and durability.
@michaelslee4336 Жыл бұрын
The amount people at work who’s minds get blown when I just pick up any random bolt and say what size it is, either metric or imperial. It’s deadset hilarious. When you hang around them long enough it’s easy.
@peregrinemccauley5010 Жыл бұрын
There's a thread of truth in this observation .
@stuartwood7252 Жыл бұрын
I've often wondered if the replacement bolt has the same tensile strength as the original. Thanks for decoding the hieroglyphics on the bolt head. I've learned something today. And that always makes it a good day. Great content mate. Stu. Melbourne
@josephkelly4893 Жыл бұрын
In the middle of a head replacement on a 1kz Prado at the moment, replacing all the bolts and studs with new units, apart from the bracket bolts and intake manifold and rocker cover it’s all new bits.
@frederickburns1739 Жыл бұрын
Well John you did it again! I'm a antique knuckle buster and never looked into the torque to yeild theory.? And so you just tought this OLD DOG something!!! THANKS
@chriskucia8348 Жыл бұрын
Recently found your channel. Great combination of humor and useful information. I enjoy watching even when you tell me things I already know, but it seems I always learn something new. Recently bought myself some thread gauges, but one trick I've used to identify thread pitch is you can use the pitch of a similar fastener with a different diameter. In other words, if you are trying to identify a m10 and you can match the thread pitch to an m8x1.0 bolt or an m12x1.0 bolt, then you know you have an m10x1.0. I can usually tell by looking these days, but it's an easy way to confirm without a gauge. Also helpful when working on late 90s/early 00s vehicles that have mixed metric and imperial (looking at you, Jeep)
@terryfraser7259 Жыл бұрын
Great video thanks John. Would be much obliged if you could do a report on managing broken bolts such as broken studs in engine heads. Always enjoy the education and entertainment you provide in your reports.
@TD-dq2qu Жыл бұрын
So much-needed detail. My sump plug is always different according to different spare parts stores😂
@markh.6687 Жыл бұрын
I had that happen with a US GM Oldsmobile needed a PCV valve. Turns out that model had a Buick engine from the factory, but the parts lists were all for an Olds engine. What a pain to figure it out, but I finally got it. And this was pre-Internet, so going between parts books took some time.
@jpsfudimo3082 Жыл бұрын
As someone who spent years in automotive R&D testing sealing systems. Head gaskets being number 1 in my specialty. I agree with all he says about the TTY bolts. Change them out when doing repairs. Don't reuse them. When talking real estate in the block and head area he is spot on. Engineers have to fight the Bean Counters over every gram of metal in today's engines. Pro tip for those that don't know make sure the bolt holes are free of any contaminants before you install the bolt. a little bit of antifreeze or oil in the bolt hole will wreak havoc due to hydraulic binding. You won't get the right tension you are needing. Another thing he mentioned about stuff bouncing he is correct if you know a head bolt is a spring believe it or not. I had to prove that fact to a young Engineer who had his doubts. I hooked up the old Bolt Mike to the head of a head bolt and proceeded to pull it apart with my hands. The numbers went up on the machine when I pulled and went back to zero when I released tension.
@benchapman5247 Жыл бұрын
Steve Morris Engines does a good video on a main bearing stud (brand new too) that let go in his custom made 4000HP SMX motor if you want to see the damage it can do. My entire fat cave bolt collection is grade 10.9 or grade 12.9 SHCS so I can safely re-use them as they are never used near their limits.
@bighairycat Жыл бұрын
I love to argue with supervisors when talking about torque to yield bolts when the manufacturer tells you in the manual to discard the bolts and they tell you to reuse them.
@jpsfudimo3082 Жыл бұрын
I did gasket development for years and tried re using TTY bolts in a lab setting to prove a point to someone. throw the bolts away. Think of it this way take one of those plastic six pack beverage things and give it a little tug. Then let it relax and give it another tug. Same thing happens when a TTY bolt goes into yield.
@craigquann Жыл бұрын
Yea that happened at a fuel depot in my area (tanker trucks come in and load then deliver to the gas stations). Reusing torque to yield bolts lead to a coupler failure and a MASSIVE fuel spill at the loading rack... all to save $0.25 each on a bolt (just guessing at the real price but you get the point)
@shanerorko8076 Жыл бұрын
Lol, this is very, well contested. I've successfully re used head bolts on 2AZ-FE engines. I'm now working on VAG cars but I used to do them all.
@rimmersbryggeri Жыл бұрын
Repair procedures say replace fastners so that you are not left stranded because one is too rusty or gets broken during removal. If you buy new you know that you have all the bolts and can get off the drive the same day. If you do a job often like in a professional shop you can save the good ones to have spares.
@TC-V8 Жыл бұрын
The Rover K series engine - infamous for head gasket problems, had very long TTY bolts that clamped the head and crank girdle together, actually had a tolerance for head bolt length- so you could measure their length and check in the workshop manual if they are within spec and could be re-used.
@TaylerMade Жыл бұрын
had one of those dam things. got after market head bolts and gasket and never blew another one. would never bother with the genuine part on those.
@nigelcox1451 Жыл бұрын
Brother had a Peugeot and the head bolts were checked by length. Except there were two sizes, and the max length of one overlapped the min of the other. Only easy one was if shorter than the longer size.
@clanmac66 Жыл бұрын
Thank you! At 57 I've learned something new 🙂
@fawshaw3361 Жыл бұрын
At my work we re-use bolts if the engineer and/or the planner and/or the materials logistic officer has omitted or forgotten to order new bolts for the work order, which is quite often
@WSmogpule Жыл бұрын
Wow, that Ajax catalogue is fascinating! Thanks...
@justinfargas2367 Жыл бұрын
Great advice JC. Thanks m8.
@bunning63 Жыл бұрын
Some manufacturers use bolts that aren't 'quite' the standard. Only yesterday thought I would be smart and source a replacement CV bolt. The factory bolt is slightly smaller in diameter than the otherwise exact off the shelf standard on the unthreaded portion. They (supplier) indicated these factory 'specials' were common. I've come across some Honda bolts that were just slightly smaller diameter than if you like the commercial norm, so a generic replacement was a no fit. Cunning little propeller heads.
@jamesmedina2062 Жыл бұрын
Engineers will look at large 24 to 1 blow up of a single bolt and really understand the spec better than we will . On Honda and Mazda, they spec very specific coatings that stave off corrosion. Typically quite expensive but quality.
@RM-au9mm Жыл бұрын
I'm just pleased I used my new torque wrench to tighten up a new sump plug bolt and crush washer. 39 Nm apparently.
@tonynicholson3328 Жыл бұрын
I am a greenie so I always reuse hardware, if it's not quite the right thread, I give it the ol' Tony torque. My plane hasn't fallen out of the sky yet... and it's not like it's the space shuttle .😮
@kepamurray1845 Жыл бұрын
Tony, you are foolish if you think it will be ok if it's not quite the right thread. I have been a licensed aircraft maintenance engineer for over twenty five years. I have seen more than my fair share of death and injuries in this industry with people like yourself who think they know what they are doing. I feel especially sorry for the innocent victims who get caught up in the ramifications of people who should be better at their job. Perhaps you should have a look at the ATSB report for VH-HFH. The screams of the two victims haunt us who were unable to help them. You have a LOT to learn. Give it away before your family regrets it.
@stevenbrown4315 Жыл бұрын
Do you you use recycled rainbows for fuel and oil
@troubleshooter1975 Жыл бұрын
@@kepamurray1845 I have to wonder if his post is for real; it sounds like sarcasm, I think he might be baiting us...
@tba3900 Жыл бұрын
With Ford any once use bolt is either a torque to yield (most often head bolts only )or it is a bolt with pre applied loctite on it. The pre applied loctite bolts are mainly frame to chassis , steering , brake components and tailshaft , which may require a heat gun to soften the loctite before removal .
@bimble7240 Жыл бұрын
Ford also use Torque to Yield (stretch bolts) on clutch cover plates, but some replacement clutch assemblies don't include them, which can cause clutch problems, as I found to my cost.
@tba3900 Жыл бұрын
@@bimble7240 they also use once bolts on certain flywheels because the crank holes are not blind and the bolts have sealant on them to prevent oil leaks.
@daintree2455 Жыл бұрын
...when fencing wire or araldite won't do the job. Great tech. refresher, thanks John. I'd forgotten how much I'd forgotten.
@paulputnam2305 Жыл бұрын
You make fizzicks funner than I thought possible. Thanks
@chrisforgan731 Жыл бұрын
where it gets tricky is many vehicles now use torque to yield bolts almost everywhere. Toyota being a very popular brand that does this. former house mate rebuilt a suzuki engine and he priced ARP head bolts for it rather expensive. he was then sent in to the local fastener shop and they supplied him a full set with washers for the price of 3 of those ARP bolts. yes arp are a premium product and if your racing the thing then its the choice. but other wise the generic stuff is just fine.
@mitchmasterfix5292 Жыл бұрын
Another reason manufacturers specify to replace a bolt these days is many bolts have a threadlock/seal compound applied to them. (looks like thick paint on the threads)
@agatemaster1998 Жыл бұрын
I was in the bolt/fastener shop the other day and a FW wanted to buy stainless steel fasteners for fitting his tow bar back to his rig dumb fooker death trap on the road was refused to be sold the bolts
@ronfeast932 Жыл бұрын
Like yourself John studied this topic for years and out with the old and in with the new.
@kepamurray1845 Жыл бұрын
John, A few points. -Step/shoulder bolts are not generally used in tension. Let alone in the TTY application. They would typically be used in shear. A gound shank would be be reserved for precision fit. - I think you glossed over the proper way of measuring threads. A vernier can also accurately measure thread pitch over multiple threads. -Shank length can often be more important than overall length of a fastener in suspension installations. There is a lot more to "speaking bolt" than you have alluded to. You didn't even mention thread form or methods for producing a thread. ie, rolled vs cut/machined. Another vid?
@AutoExpertJC Жыл бұрын
Sorry - I didn't mean to imply shoulder bolts would be TTY. I was just holding one and talking about TTY. On the other points I agree - it's quite a deep topic.
@knorespect7403 Жыл бұрын
Love your content and appreciate you sharing your knowledge. Why do people substitute cylinder head studs in place of the bolts they normally come with? I'm assuming they have higher a clamping force, but don't understand why. Thanks!
@lc1966 Жыл бұрын
My mates wife has two in her neck... She's 49, and they look good.
@williamgeorgefraser Жыл бұрын
20 years ago a workmate of mine had to replace the cylinder head gasket on his Fiat Punto. The bolts were elastic (torque + X°) and had to be replaced with new ones. To get the head off, he had to buy a new socket costing about €100. He borrowed the company van to get home that weekend and bought a new set of bolts. Turned out Fiat had changed the head on the bolts and they needed a special Torx socket supplied by Facom that cost €250. Luckily, he managed to borrow a modified socket from a garage that just managed to do the job. A bit of a scam.
@traindrivernick Жыл бұрын
Can you do a video on your workshop? It looks amazing
@mjrmotors3558 Жыл бұрын
I forgot to mention that the bolts a quite cheap in relation to what the cost of removing a cylinder head is. so they are always replaced to avoid any issues that may occur.
@stevesanelli90 Жыл бұрын
JC talking my language of thread & pitch🤙 I’m born just in the Metric system.
@MagentaRV Жыл бұрын
Note you shouldn't "upgrade" class/grade of bolt either. If it's a grade 5, don't use a grade 8 as it might need the extra flex of a grade five to not sheer.
@michaelsprinzeles4022 Жыл бұрын
I love your vids. You always talk sense but this vid was mostly nuts;)
@JimboXX78 Жыл бұрын
When can you reuse nits?
@craigjones2878 Жыл бұрын
Hi John, when i rebuilt my motor i replaced the head and crankshaft mains bolts with studs. The standard head bolts are torqued to 95 ft/lb but the studs are torqued to 110 ft/ lb. Is this because the studs are stronger and if so why are they stronger?
@johnstuart3851 Жыл бұрын
Regarding head bolts vs head studs, when bolts are tightened into a threaded hole in the engine block, there is some angular twist in the bolt shank that can cause some distortion in the engine block and effect the cylinder bore roundness and block deck surface flatness. Head studs are loosely fully threaded into the bolt holes in the block deck, then a precision parallel ground nut and flat washer with fine thread pitch compared to bolts is tightened to develop the required clamping load on the head gasket. Since the finer pitch threads on the stud and nut result in higher clamping loads with the same tightening procedure, without twisting of the stud shank unlike head bolts, with minimal distortion in the engine block and cylinder bores while having higher gasket clamping load. Head studs are not tightened into the yield zone as is often the case with head bolts and can be reused as well.
@craigjones2878 Жыл бұрын
@@johnstuart3851 Thanks for your well considered reply, it all makes sense now.
@threeballedtomcat9380 Жыл бұрын
"Torque to Yield" bolts should never be re-used. In my experience most engine bolts ( main and rod ) are safely re-used. Cast iron heads are safe to re-use the head bolts. Most aluminum head head bolts are TTY , and are usually included in a high quality gasket set. I have built a lot of engines in my 67 years and to this date I haven't had a fail due to a bolt failure.
@onmyworkbench7000 Жыл бұрын
I had to mow my lawn this week and I was thing about just that, have just under 10 acres that I mow and it takes me around 3.5 hours.
@eugene-knows-stuff Жыл бұрын
John, help me out here. I'm a qualified artisan, been so since 1999. Although my view on what I'm about to ask you was not taught to me, I made this personal observation during my time in various trades. When I've encountered bolts/screws that were according to manufacturers' specifications not needing replacement, they generally had one or multiple torque steps with a specified torque number, ie 20, 40 then 80nm as a final torque value, as an example. Whereas in most or almost all circumstances where the manufacturer specified replacement of fastners, the torque sequence often had a first and possible second step torque number value, followed by one or two degree value steps. Is my assumption that fastners not needing replacement will in most cases be linked to torque value numbers and fasters needing replacement to torque value numbers plus degree steps correct or does it depend on the fastner type/application and the designer's perspective of the use case? Your view on this will be much appreciated. Cheers mate
@matthewblack5656 Жыл бұрын
Is "when you are a tightarse" the correct answer? I still have biscuit tins full of nuts and bolts that my father collected that I still use every now and again. And I probably add more to the collection than I use.
@davidwild66 Жыл бұрын
I'd reckon as long as you can still fit you and the job in the shed, you're ok. If you can't fit in the shed, you're a hoarder and need to get rid of some junk.
@stuartwood7252 Жыл бұрын
@@davidwild66Traditionally, I'm pretty sure if your stuff doesn't fit, it's time to build another shed.
@stagggerlee Жыл бұрын
Great video! So, you talked about torque to yield. Thinking back to the torque wrench video, how in hell do those fancy wrenches know if you turn 90 degrees or 120, whatever?
@markh.6687 Жыл бұрын
If you're using TTY bolts, you shouldn't use your torque wrench for the final tightening-to-angle; use a breaker bar once the torque setting is reached. The torque wrench doesn't give you the angle; you have to either guess it, or use a protractor or something to make sure you get the right angle.
@ifell3 Жыл бұрын
Great video!!
@mickcoz1995 Жыл бұрын
How can I contact you about a suggestion for discussion topic
@dougstubbs9637 Жыл бұрын
Never reuse head bolts unless you wish to practice changing head gaskets often.
@michaelslee4336 Жыл бұрын
If not taken past the yield point then it doesn’t matter.
@dougstubbs9637 Жыл бұрын
@@michaelslee4336you obviously haven’t rebuilt a Japanese engine.
@michaelslee4336 Жыл бұрын
@@dougstubbs9637 Explain why then.
@djjames6576 Жыл бұрын
Replacing fasteners procedures for suspension are no doubt also vetted by company lawyers to avoid litigation.
@pmd7771969 Жыл бұрын
Every bolt stretched beyond its factory recommended yield strength is half broken or broken, any bolt that does not return to its stock length cannot be reused. If it can't stretch further it breaks. Under tightening is always better then over tightening. Bloodviking
@AutoExpertJC Жыл бұрын
"Factory recommended yield strength" is a bullshit expression. Something either yields or it doesn't.
@JustMe-xd2fr Жыл бұрын
Does only the bolt get "stretched" permanently when reaching or overcoming the yield point, or will a nut also change? I mean, if the thread of the nut would also be stretched, it also had to be replaced and that should not be a big deal, but you can not replace the thread in an head. So what happens to the counterpart of the bolt?
@JustMe-xd2fr Жыл бұрын
@AutoExpertJC Was this from you or Fake / Scam?
@AdmissionGaming Жыл бұрын
All this talk about getting the correct pitch and so forth, well I'll have you know that a good crossthread is better than loctite.
@AdmissionGaming Жыл бұрын
John what do you think about motorcycles?
@Paul-45-70 Жыл бұрын
I’ve asked the question to a few mates who have rebuilt their own engines over the years as to why the engine machinists/ part suppliers insist on selling them ARP branded fasteners when in my opinion you could take a sample to a engineering bolt supply shop to get the same bolt? Hopefully someone can enlighten me . Thanks
@AutoExpertJC Жыл бұрын
ARP has a pretty solid reputation for bolts that really matter (rod bolts, main bolts, etc.). But you're right - if the bolt isn't a bespoke part, there are probably solid alternatives.
@Paul-45-70 Жыл бұрын
@@AutoExpertJC thanks John, that’s what I thought. I’m from a fitting background and kind of “get” bolts but thought I’d ask as I’ve been a subscriber of yours for years and value your opinion.
@dragancrnogorac3851 Жыл бұрын
If manual says replace bolts than replace bolts... And use them in other stuff like fence post or dog house
@hennieodendaal5087 Жыл бұрын
to oil or not to oil when torquing, is the other question
@DanWallis86 Жыл бұрын
He’s already covered that in another video.
@hennieodendaal5087 Жыл бұрын
@@DanWallis86 Ah thanks, going to check it out.
@shanerorko8076 Жыл бұрын
The bolt you keep holding, it looks like a commodore front clevis bolt.
@bobbyfeatherstone2834 Жыл бұрын
Up here above the Equator, EVERYTHING is upside-down!
@soundman6645 Жыл бұрын
If you are doing any regular work with fasteners, you will be wise to develop a relationship with a good bolt shop, these guys know their business and look after you on price and quality. . So many times if you are buying well, it's just, so litte trouble to use new fasteners. Often on many vehicles, your friendly bolt shop will provice better quality bolts and nuts than came factory. . Often when I am assembling things that come, in a cardboard box or crate from Asia, I bin the fasters that came in the box and use better quality. . All that said, there are often very specific fasteners used by some manufacturers. . Differently, some performance engine builders specifically use bolts from Catipliar the earthmoning manufacturer, because they have a good reputation and not stupidly priced.
@briansmythe3000 Жыл бұрын
I Had a Thread Guage once , Donno what Happened too it , Not That i can speak Bolt but It would be worth Learning
@kir0nz Жыл бұрын
TL;DR: It is okay to reuse the bolts when reassembling John Cadogan. No lube required. But some high strength loctite and a power bar wouldn't go amiss. No, you don't need a torque wrench. Just get your friend who never skips arm day to do it up as tight as possible. Yes, this is a joke. For all you people who don't understand sarcasm.
@Peter-sk5vg4 ай бұрын
Absolutely brilliant. Totally informative and really entertaining. Sanity in a sea of hysterical misinformation. No objections to those highly intelligent orange- clad mechanics, either
@stevenbrown4315 Жыл бұрын
Want to drive a American insane just hand him a witworth spanner and ask him what size it is also tpi and pitch of fasteners are different to sae and metric how British engineering cursed their exports,the major tooling issue 17:28 Packard had with building the Merlin engine other than optimising it for high altitude operation . I have come across Japanese bolts they refer to as stretch bolt similar tightening protocol as torque to yield but can be reused if the measured length is within specification finding the specs not easy. They look similar to torque to yield apart from material colour is darker like normal high tensile bolts, couldn’t get new bolts so reused old bolts as they were in spec with no issues.
@ianmac2963 Жыл бұрын
HAHA !!! More stuff for me to purchase !!!
@mwds5240 Жыл бұрын
Once again, thanks for the great insights to common sense (fhe rarest commodity on the fucking planet).
@3GingerCats Жыл бұрын
straight off the bat, & pausing at the 59 second mark, Some Shock Manufacturers will supply Bolts that they deem needing replacement, The Holden Commodore Front struts are the most common ones I have experienced in 8 or 9 years of doing suspension. Even if here doesn't seem to be anything wrong with the originals, they are supplied, so they can go in. But there are also many other cars with bolts that are so weird (Like VW's) that you would probably never find a replacement, in fact Toyota had a thing for 15mm bolts, a thread size that nobody makes. & then there's things like Subarus that have Camber adjusting bolts. sure you can get replacements, but nobody does. It's more the big end and Rod bolts that are likely to need replacing as well as Head bolts that have the up & down torque setting plus so many degrees... which definitely need replacing when doing a head gasket etc
@One-Two_swift-kickbox Жыл бұрын
"Wood, nut and bolt." - The mantra of today's generation
@LoremIpsum1970 Жыл бұрын
...who knew water damage to EVs could cause their batteries to self-destruct...something else to worry about... Scotty Kilmer's YT channel: New Study on Electric Car Deaths Shocks the Entire Car Industry (bit of old, news but I'm a bit slow...)
@ianmoone2359 Жыл бұрын
One size fits all. That’s what she said. 😜😂👍🇦🇺
@zzhughesd Жыл бұрын
Torque to Yield. Or Alu. After watching a few videos last few years
@jamescouper1070 Жыл бұрын
I think on torque wrench you have got confused on the type. What you say would be rite if it was a beam type, but not like a click or digital type. I think you have not explained . James
@troubleshooter1975 Жыл бұрын
You can also go past click or on a digital, more degrees as much as you desire. You don't have to stop turning at the 'click'... (if that's what you were referring to)
@markh.6687 Жыл бұрын
Real world example: Some Nissan engines being repaired for head gasket leaks, needing new bolts. Some mechanics, apparently unaware they were supposed to use NEW bolts, re-used the old head bolts...leading to yet another head gasket leak. The repair procedure was correct; the mechanics were not. ... Also, the woman coming out from under the vehicle with a lit cigarette in hand has committed a safety violation, and needs to be spanked...err, counseled on proper safety procedures.
@thewholls7176 Жыл бұрын
When I was at school in the 1980s, our motor mechanics teacher insisted that we learnt Whitworth threads……. Needless to say he’s dead now and I never bothered going to the funeral.
@dtnicholls1 Жыл бұрын
I hate TTY. They get used entirely too often in places they just don't belong. Head bolts, cap bolts etc where the clamping load needs to be known amd replacement is unlikely to ever be needed, sure. But does a caliper bolt, engine mount bolt, balancer bolt etc all need that level of specificity on clamping force? They're road cars, not F1. Would it really be that bad to increase the unsprung mass by a few tens of grams? They won't give you the data so you can buy a suitable replacement from anywhere but the OEM and they don't keep replacement stock available long term. It's pretty much planned obsolescence. How pissed off will you be when you get told, sorry you'll need to buy a new car because you can't change the timing belt on account of that pulley bolt being unavailable.
@ghs7714 Жыл бұрын
Nice gay t-shirt John!!! From Wagner 2.0 chief?
@stuartwood7252 Жыл бұрын
What Tshirt? I could only see him from the neck up... ;¬]