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How To Torque Cylinder Head Bolts - EricTheCarGuy
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- Опубліковано 28 сер 2010
- How To Torque Cylinder Head Bolts - EricTheCarGuy
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Well this was a fun one to make. I believe I covered everything but if you feel I haven't please let me know in the comments below as well as any tips you might have to add as well. I'm not trying to make a big deal about "pound feet" or "foot pounds" I'm just trying to put that out there, the important thing is that you get the proper torque and get the job done right in my opinion, what you decide to call it is up to you.
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Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy.
Very well explained. Good to see the appreciation of what engineers want to get from preloaded bolt joint. A few comments from engineering point of view:
1. the most accurate way to get the correct bolt preload is with initial tightening. re-tightening torque gives you much bigger torque scatter even if the torque wrench is set to initial torque.
2. by cleaning the bolt thread with a wire wheel you are making two things: you make the thread surface a lot rougher which results in high thread friction that decreases your bolt preload; you increase the embedding losses in the bolt thread which results in the bolt relaxation (some loss of preload) by flattening the spikes in surface roughness.
⁰p pp 0⁰⁰p p⁰⁰
"Wire wheel", that's just high speed burnishing! Whidh is it 'thread surface a lot rougher' or 'flattening the spikes' - make up your mind!
I'm not an engineer but I could see that being problematic
Your fluent chose of word makes you an amazing teacher, so easy to learn from, and all your tips are worth a bounty.
Thanks for sharing your skills.
@tinydx95t2 Yea it was a proud day when I paid those off. You'll get there to it takes time. Thanks for the comment.
@mrjost55 Thanks for noticing, I do put a lot of effort into the show and it's nice to hear when people like it. This is a bit more than a hobby for me, if I have my way I'll be doing this for some time to come. Thanks for the comment.
Believe it or not the foot pounds only refer to the force being applied to the bolt not the tightness of the bolt itself. That is why the guy tells us to clean thread etc. he is smart not dumb at all.
people look up to the Rock, or even Dolph Lundgren, The real ROCKST@R, my man eric
@alphared11 No worries man, I know I'm not perfect and I don't pretend to be. My viewers (including you) keep me honest and up on any mistakes I might make, in fact I count on it. I appreciate you taking the time to comment and pointing out the things you did.
@wizkid01 Nope, you would use the 'torque angle gauge' that I showed in the video instead of a torque wrench for the final torque.
my manual says that when ever the bolt starts making a creaking sound you have to take it out and redo it
nope nope Yes. This is a video how NOT TO torgue head bolts;)
@@grzegorz16100 cuz a guy with decades in the industry has ruined so many cars right? Use your head
@@socknetea I have seen people with decades of "experience" who can't do shit. That doesn't prove anything. It might be that his headgasket will last 5 years instead of 10-20.
Actually I wouldn't use one of those torque angle gauges for 90 degrees. They can slip and it's far easier to just make a mark with a sharpie and turn it 90 degrees. For angles that aren't 90, 180, and 270 degrees, then I resort to the stupid torque angle gauge.
or you can do sin, cosin or tangent to determine what lb/ft is the degree you need
That doesn't make sense. Trig functions relate an angle to its two-dimensional components. The torque required to achieve a particular angle beyond the first torque depends on friction and material deformation. Tightening by angle is generally more uniform than tightening to the same measured torque anyway, which is the point.
ollopa1 m
@@jon-erikbutcher3609 5l specification on cons rods bearing torque
@maddluckz Thanks for the comment. I do plan to cover those things at some point in the future, stay tuned. (pun intended)
@mickeygovender Well Carburetors and fuel injection are 2 different things, you comment involves both. Rest assured I am working every day to make more and better videos so stay tuned. For the moment I'm a slave to what comes through my door so please be patient. Thanks for the comment.
It's only a matter of time before Miley Cyrus gets into automotive repair and starts torquing.
Jajaja! Lol. 👍
Booooooooooo 😅😂
Metric always beats American measurements.
We civilized folk prefer to have a system which converts sizes (centimeter/meter) in consistent magnitudes.
Metric:
10 milimeters in one centimeter
100 centimeters in one meter
1000 meters in one kilometer.
The same numbers apply for weights and fluids.
American:
You guys don't even have anything smaller than inches, you just start making fractions.
12 inches in one foot
3 feet in one yard
1760 yards in a mile
The weights and fluids are also all over the place.
Most of us (American car guys) have them memorized quite well and cubic inches measure displacement more precisely than liters, although that's a different topic.
xxRamD3yruxx Metric is more accurate because metric measurements can be smaller than American standard.
Milimeters, micrometers, nanometers
ChrisHallett83 because when you say a 350 chevy is 5.7 liters you've undersized the engine by 35cc. I was not comparing cc to ci, but more of liter to ci. cc is even more acurate than ci although that's a large number to stick to the side of the car.
Dylan McElveen milimeters are close 32ths
anything smaller would be moving into scientific zone meaning: go metric, because science is in metric
Civilized is the man that identified and complimented those that are "past the stone ages" and use metric even though he's from a place that uses American measurements. Not the one that blatantly insults an entire nation of people that do, as you have now.
@archer435 Lastly, I would like it noted that I did mention using a thread chaser on the block and not a tap as a tap would damage the threads in the block. Once again I appreciate your input but in the future I would ask that you not phrase them as personal attacks or infer that I "failed", as I mentioned in my first video, there are lots of ways of doing things and I respect that, I only ask that you respect me in return.
@hondafanic0203 The videos I make are based on the cars that come into the shop so I would have to have the same car come in needing the same service to make that video for you and to be honest Integra head gaskets don't go out all that often in my experience so it may be some time before I make that video. However I JUST remembered that the engine in my video "Dissecting an Engine" IS an Integra 1.8 so you might want to check that out.
Anyone else hearing "Twerking"?
+Fact VS Conspiracy no
2256si99. kaleb
no
16:40
@jihan2003 Cool, I love international comments. There is only 2 things I would like from my "fame", one to support my family and second to help those that need it, simple really. Thanks for your comment, I think I'll post it as comment of the day, thanks.
@DARKSCOPE001 I appreciate your input it means a lot. Thing is that I can't change the video once I post it other than an annotation and I feel that would be too much for such an explanation. I have noted your comment however and if I can incorporate it into a future video I will.
@jr10385 I usually post new videos on Mondays. Thanks for your comment.
@LeathanEre Personally I LOVE those wrenches, I wasn't kidding when I said they are some of my favorite tools. I prefer the clicker type because of cost. You can set up the digital type to beep when the specific torque is reached which may be a better indication since you sometimes hear that "ping" when you tighten some fasteners that can mask the "click" that you are looking for with a clicker type. Thanks for the great question and comment.
@CravinMorehead420 I try to be as accurate as I can remember but I usually forget something, I really should start writing scripts for these things. Thanks for your comment, BTW it made COTD on my FB and Twitter.
@Yonnlopez I sure can help, watch the video Diagnosing an Overheat, that should get you started on finding that problem. Thanks for the comment.
@chevykicksass505 Yea, lots of different input on this, I hadn't heard of that. Thanks for the comment.
@bigsteve84769 I think as long as they have oil on the threads when you install them you are good as I don't see the benefit of soaking them because the metal will not absorb the oil in any way. Thanks for the comment.
@pberglin Good tools are always worth the money. Thanks for the comment.
@cooljestin1 I've seen them break in the past, they do turn out easy after they break however so at least there's that. Thanks for the comment.
@skylartjsayers Yes it is. In fact I was making a video on it's problems as well. It turns out it's also having computer problems so I'm going to wait till that is resolved to finish the video and post it.
@915Mustang Your right I didn't and I'm not saying that isn't a good idea but I've done it this way for years without any problems. Thanks for the comment.
@alphared11 Well first I did torque those bolts to 72lbft, I think I mentioned the mistake before I got started. As for the human torque wrench, it's not me so I'll use a torque wrench thanks.
@NETWizzJbirk I've used a torque stick myself and have been happy with the result but I've also made a video on torquing wheels for the very reasons you mention. Thanks for the comment.
@thepackman111 I'm glad you like them and that they help, thanks for your comment.
I use a tall, 6-point deep impact socket to both remove and install head bolts, to eliminate using an extension on a shorter socket that can interfere with accurate torqueing. A 6-point socket is better than a 12-point on a bolt head that has 6 points (hex head) since it's less likely to slip, and might also make the torqueing a little more accurate.
@croom9 Thanks. I use a Sony HDR-SR11, nice little cam, she's held up well despite the rough use, I'd like to get another one soon so that I can do 2 camera shoots on some videos.
@mickeygovender I don't have a video on a leak down test yet but one is coming as I've had quite a few requests for one.
@robertbaxley A tap is designed to MAKE threads, you don't want to do that in this application so you use what is called a 'thread chaser' which is for CLEANING threads and won't alter the existing threads. I do what I can to try and keep up with comments but it's getting more difficult, my priority is to the website and my forum so I always go there first to answer questions if that helps you.
@SovietSlayer There is nothing finer than a good torque wrench in my opinion. Good luck with that job and thanks for your comment.
@bunning63 I'm glad you enjoyed the video, I so often get comments on things that I missed or things that people disagreed on it's nice to get a comment like this one thanks very much.
@TheChero6 They are worth every penny, I can vouch for that. At least for me the Snap-on truck didn't have the capability to calibrate the wrenches, he would send them off and give them back when they were done. While doing some research for this video online I found some of the tools they use in calibration, pretty cool really. Thanks for your comment.
Eric, you've helped me countless times, saved me thousands of dollars, uncalualble hours, painful headaches and fits of rage. I pass all of this information to my boys, get them greasy and use the saved money on fun stuff for us! Thanks
@jjenson2006 Interesting method but how would you see the bolt head while you turned it? You really should come up to torque in one motion not several trying to read a mark on a bolt head, I'm not saying your method would not work but I believe the use of the tool would be more accurate and yield a better result. Thanks for the comment.
@LuieDiaz1 After a head gasket job you will have smoke for a while due to the contamination that gets onto the parts during assembly and disassembly, it takes a little while for it to burn off. If you suspect a head gasket issue I suggest you test for it instead of speculating, watch the Diagnosing A Cooling System Overheat video for details on that test.
@motorztv Take care of your tools and they will take care of you. Thanks for the comment, good to see you motorztv!
@WhammyMechanics Indeed there are times where there is no way to avoid using extensions but it's commonly understood that it's best not to use them or use the shortest one possible to gain the most accurate torque readings. I'm not saying your wrong because I do things I'm not 'suppose' to all the time but it's good to know proper procedure and if I'm going to put out a video like this I want to at least present the most accurate information that I can.
Eric the car guy, I freaking love your videos. You're so informative and in depth. You always treat cars right, you the bomb man keep doing your thing! 19Years old and replacing my valve stem seals this weekend. Watched your videos for some insight along with a bunch of research. I'll let you know how it goes!
@IIGrayfoxII Thanks for the info and your comment. It's nice to see that you have embraced the 21st century, we are still working on that here in the states.
@jr10385 I'm not sure what your asking as you seem to have the specs, follow the steps and you should be fine especially if you have a degree wheel.
@snaponjohn100 Thanks for the great comment, I really appreciate it.
I bought a cheap brush kit with brass, nylon, and steel brushes from harbor freight and cleaned every bolt as well as sprayed them down with brake cleaner and lubed them with oil as well as the brake cleaner in each hole worked perfect! I also did not have any noise issues with the torquing sequence, but I did buy the 3/4 in torque wrench and 1/2 in torque wrench from harbor freight and worked liked butter.
@fastvpbt1 Honestly that depends on what's causing it, for starters make sure you are using the correct oil called for by the manufacturer. If you have noisy lifters I don't recommend using synthetic oil either as that can make it worse.
@ratrace2p51 I don't have one that's why I didn't use it but thanks for your comment.
@techgood I'm glad you liked it, thanks for the comment.
@diorije You actually answered your own question, the tap is to create threads whereas the thread chaser is there to clean the threads. Great question and thanks for the comment.
@NoOneIsSafeAnymore I appreciate you comments on so many levels and I just might take you up on the 6 pack thing.
@MrMunono You may have to take it back apart as you may have installed the gasket wrong. Also you NEED to torque the head according to the service manual procedure if you want the repair to last.
@letxen3 If the new bolts didn't come with washers don't install washers of your own. You could consult the service manual to see if washers were present to begin with if you wanted to be sure.
@KayC2SLO Engine oil will work just fine, I just happened to have a little left over transmission fluid that I used on these.
@MRKD1811 I honestly don't remember blocking you, I'll look into that after this comment. Sometimes YT can be a bit 'glitchy'.
@branco445 If you just worked on it and now you have a noise the best course of action is to go back and recheck your work including the timing belt tension.
@sweetlikeADAM I don't think so but it's not a big deal if you do, just keep them in order, the caps are numbered and the direction is noted in the casting where they go back into place.
@TeDuaMalakie Good suggestion and I know it would work. The reason I wouldn't do it is because I'm broke and don't want to waste my gas on cleaning stuff. Thanks for the comment.
@kingxaces22 I make videos based on the cars that come into the shop so it's hard to fill requests like yours since the same car has to come in needing the same service. If one does come in however I'll do my best to make a video if I have the time to shoot it.
@BlueBird20DLX Yea, I'm not one of those guys, thanks for the comment.
@ladabyturbo I don't think so, you don't want to use a grease that will dry up or put more pressure on the threads, oil works just fine.
@yomama07024 Well that's perhaps an oversimplification but for the most part, yes. Probably the most challenging part is getting the intake off, the rest seems pretty straight forward to me.
@fastvpbt1 Not really no, it's the smaller fasteners with small torque specs you have to watch out for as they can be tricky but the bigger fasteners like these usually aren't the problem if treated right.
@X2N18 The rule is to try and use the wrench that has the spec you looking to achieve in the MIDDLE of it's range, if it's close to one end or the other of the effective range of the wrench try to find another wrench where the spec is closer to the middle of it's operating range.
@branco445 If I'm honest I don't have a 'magic bullet' for you on this one, go back and check your work and make sure everything is installed and connected correctly, also make sure you put it back in time properly.
@finalman82 Excellent suggestions, thanks for your comment, you should make that video as I'm not familiar with the term "breaking".
@HondaGRST You can use that sequence but the important thing is to start in the center and work outward, not at the edges. I like to use OE parts whenever possible but I haven't had problems using the aftermarket gaskets that I've used so far, the important thing is the treatment of the head and the block (cleaning them properly) as well as the correct torque and sequence when installing the head.
@ghtowagon the people that had recently done a head gasket on the car had caused some issues that I was addressing.
@ChowZeb Glad you liked it, thanks for the comment.
@BoilerDan8787 You don't want too much oil in the holes or oil to pool in the holes as it will create a situation that could lead to hydrostatic lock, the small amount of oil on the threads will not cause this and allow for a more accurate torque setting.
@JDMnubi I usually do some from under the car and the others I use a 1/4" socket and ratchet. It's a lot easier after you remove the thermostat housing and the bracket under the intake.
@jwed6 Glad you like them, thanks for watching.
@graffie Lets put it this way, 'grease' copper or otherwise on the threads WILL effect the torque and the reading. Second if they don't do that at the factory (which they don't) you shouldn't do it either.
@ice7771 Defiantly use engine oil. Good luck and thanks for the comment.
@mixwell1983 The issue I would have with that is that it might send the debris to the bottom of the hole, with a thread chaser there are cavities in the tool that capture any debris and will remove it from the hole.
@davidzzz94 Most times you can feel it as well as hear it, it cam be tricky if you don't oil the area between the fastener head and washer because it will sometimes make a noise similar to the click.
@chicks123 Glad you liked it, thanks for the comment.
@SephirothFF1 Your welcome, thanks for the comment.
@mickeygovender Check the injectors to see if they are operating correctly. Start with a noid light to see if it's getting the proper signal, if it is then you probably have a bad injector.
@MrTDM09 I'm glad I'm able to help with your automotive career, the world could use a few more good technicians in my opinion. Thanks for the comment and good luck with the K series, sounds like fun.
@costa83p I'm not saying OE is always the way to go but quality parts often make a big difference. You get what you pay for most times.
@spelunkerd Use it only when the bolt is going to seal a passage, on some engine blocks the threaded holes for the water pump go into the water passage, this would be an appropriate time for sealant. Cylinder head bolts should NEVER have sealant put on them however as they don't seal a passage but rather fasten the cylinder head to the block. Consult the service manual whenever you have a question about the use of sealant in a particular application just to be safe.
@letxen3 No they don't. Don't install washers where there was none as this will effect their torque value. Make sure they are not stretch bolts, if they are then you will have to install new ones as you are not suppose to reuse them.
@mickeygovender In my experience it's not the valve seals that cause oil burning but the piston rings, you might want to do a leak down test to see what kind of shape the bottom end is in, I think you may find the rings are leaking more than you think, esp on cylinder 1 according to your posted readings.
@diorije I've been told not to do it but I've done it when I needed to since I don't have a set of thread chasers. I would not say that they are interchangeable however since they are 2 very different tools.
@PUREAAMERICAN Cool I didn't know they had the angle built in. Thanks for the comment.
@archer435 Your comments and input are appreciated and for the most part I agree, if I were assembling the Mona Lisa of engines I would treat it as such but in this particular case it was a used car that was damaged by a previous repair, the client was looking to turn the car around to prevent further loss of profit. There is something to be considered as well with a job like this and that is that "time is money", time saved is money saved.
You should work for NASA
@loco0351 Glad you liked it, thanks for the comment.
@kevtay1000 No need to replace the bolts they are not torque to yield bolts. If there is a torque spec with a degree measurement as opposed to a torque value those are usually stretch bolts and require replacement.
@sparkscarz Glad I could help, thanks for the comment.
@Brincandopabajo If the fasteners are not properly torqued it may cause the gasket to leak is about the only thing I can think of but if that does happen you have to do the work all over again.
@MYDRAGGIN84 Not really normal, if it's a Canadian model then the headlights are designed to come on when the ignition is put in the ON position. That should have nothing to do with the starting circuit however, perform the check that I recommend and see what you find.
@SWD2263 I never thought of that but it seems like it would be a good indicator. Thanks for the comment, really great info.
@testbooster I can answer your question right now by saying buy the complete set, the truth is that you don't know what your going to run into on a given day so you need a complete set of tools especially hand tools. Save your money and buy the entire set as it is an investment in your future an important one at that.
i full of admiration to the knowlauge that you are sharing you can be full of joy that god bless you with wisdom and you are using that gift to share and help others .
pls keep that in your mind when you are doing the videos . " you are full of wisdom and giving that wisdom to others . and help them to save money and time
@9b8 Torque procedures vary depending on application, I have seen some like you suggest, it's really up to the engineers as they put in the time to find out what works best and then write it into their service procedures.
@Patrick1776Henry Yea, fastener size is based on thread pitch and the diameter of the fastener itself NOT the head size so keep that in mind. Ex. if the bolt size is 10mm x 1.25, the diameter of the fastener is 10mm, the head size may be 14mm. This is actually an excellent question.
I have a Chevy Impala 2003 had a macanic change intake gasket got the car back it runs hot I've changed radiator, thermostat,fan, I have to bleed the air out the lines everyday. someone said the macanic may have not tourped it right would that cause air to get in the line every day