Old Mechanic Trick To Removing Rusty Exhaust Manifold Bolts!

hello everybody my name is Steven Cox and welcome to my shop today's project you know I stole that from Brad with the Texas beard Adventures every time I watch his videos that just he goes today's project welcome to Texas beard Adventures I'm Brad Harold your host and today anyway um I want to show you guys how to take out exhaust manifold bolts this is on a 73 cylinder head it is off the truck obviously but this same principle applies to every bolt out there it doesn't matter that it's an exhaust manifold bolt I have gotten really really good with removing bolts without breaking them and I'm going to show you how little patience little time and a little effort you won't have to be drilling out bolts it might seem like this process is going to take a lot longer than just putting an impact on it and let in rip and then snap in the bolt but if you have to drill into the cylinder head while these things are on the vehicle it is a royal pain I know because I had to do one one time on a truck and it took me I believe I think it was 12 hours to drill all eight of the bolts on both sides and replace the manifolds it only had like one or two bolts hold the manifold on somehow I think somebody else had been in there whatever anyway I'm going to get the camera showed up set I'm going to get the camera set up rather and show you guys exactly my process of busting some bolts loose so this is typically what you're going to see is a lot of kind of corot looking bolts number one get you some good penetrating Loop I really like knocker loose Works fantastic it's one of the best caned versions that I've ever used um I tend to like acetone and ATF also but that kind of catches on fire so that's not good but soak these things down liberally um as soon as you know that you're going to have to be taking these off um you don't want to just spray these things down real quick and then immediately try to screw with you want to spray it down let it sit for a couple minutes respray it down make sure you're spraying where the head is and the bolt threads down here as well as this little shoulder area right there because this cast iron manifold will swell up and it'll actually corrode and rust to this bolt so I've already sprayed these down a couple of times today and if you guys want a can of this there'll be a link down in the description you can order that on Amazon Nappa O'Reilly's all your major auto part stores Tractor Supply they all carry it so at this point we have it all soaked you need to get you a good quality I like a/2 in Drive um this one happens to be a 13 mm for these bolts but a six-sided bolt don't try this with a 12p point and we're going to try to break these loose without applying heat first just to see where we're at and when you do this be very very gentle okay I felt it just barely cracked there I don't know if you guys heard that but I heard it crack going this way so now I'm going to flip my ratchet to tighten it we're going to come up okay we're just going to slowly work it back and forth to kind of loosen that bolt up you can see the thread starting to turn if you're very slow with this process you can fill it in your hand if the bolt starts to kind of twist it's self what I mean you have a bolt this is a head bolt but if the threads are stuck and you start twisting this head the threads will stay here and this shank will start turning but what actually turns is this little area right here in the very first deep thread that was cut on this bolt it'll snap it right there every single time so if you do this just like that it'll come off really easy okay so now here's one of the most important parts do not remove this bolt completely once you know it's good to go where you got it broken loose you need to tighten it back down there this is one of the most critical parts of this entire operation do not go through and start removing every single bolt Because by the time you get here and here you're probably going to snap these bolts the reason is because this entire exhaust manifold is machined for this surface here to be completely flat and clamped down evenly to the head if you loosen this bolt this bolt this bolt and this bolt instead of remaining flat it's going to start doing this um you're going to start having a gap here and it's actually going to wedge these bolts tighter on this side and you're going to fight the you're going to end up fighting it I'm going to go ahead and go through the rest of these do that exact same where I tighten loosen tighten loosen tighten loosen um and then once we get to the end I'm going to go ahead and break out the torch and just in case you need to use a torch I'll show you exactly how [Music] to [Music] I'm going to zoom in on this particular bolt I want you guys to watch right behind this head as this bolt comes out look at all the rust just falling out of this little hole this is the main thing that you're going to fight on exhaust manifold bolt it's not actually the threads into the head it's the bolt going through the exhaust manifold that makes it so difficult that's what rust everything together [Applause] so this one is a lot tighter than I'd like I'm going to go ahead and get out my torch we're just going to heat up this area we don't need to heat up the bolt we just need this area to expand don't know if you guys heard that crack or not let's see if that was this bolt giving up the [Applause] ghost [Music] [Music] get you can see all that rust just falling out of that bolt hole that is the number one thing you're always going to be having issues with so what I'll do is I'll back this guy out right about there I'll spray it down with some knocker loose then we'll titten her back down that one came out pretty [Music] [Music] easy [Music] [Music] now both we take [Music] [Music] them one [Music] [Music] d [Music] what's funny about doing this is when you're holding a torch if you get it right you'll actually hear it Go click and usually that means you're good to go oops see guys right there is the difference between using a um 12-point socket and a Sixpoint socket this bolt has already been broke loose but even just that little bit of torque on it stripped it [Music] out there you go our bolts are all out and that's my secret to getting exhaust manifold bolt out now one more tip when you go to reinstall these I always use antise on the bolt shoulders and the threads Co them and anti these also take you a tap take your time run a tap through all of these holes on your exhaust manifold they get rust in there from water corrosion and the swelling of two dissimilar metals or three dissimilar Metals um and you'll go running the bolt in there and sometimes it'll look like it tightened up but really you just crammed a whole bunch of crap into the hole guys take your time with bolts that are hard to break loose especially any sort of bolt that was subjected to a lot of heat it's going to have corrosion build up it's going to be a pain in the butt just remember try to use Sixpoint sockets use the biggest ratchet that you can they generally like the larger sockets don't open up as much and strip stuff out uh like the 38 and/ qu inch I mean sometimes you got to do what you got to do and try it but use a Sixpoint impact grade socket that'll help use lots and lots of penetrating lube and take in a torch if you need to and just take your time try to loosen it try to tighten it while you're loosening it if you notice that all a sudden it's just free willing and it gets stick stuck it's like stop what you're doing don't keep trying to go cuz you're going to snap that bolt if it gets seized up spray it down with Lube tighten it back up spray it down with Lube walk it back out try that a few times if it keeps getting stuck try a little heat um if heat doesn't work and you've tried every single thing that you possibly can then sometimes you're just going to have to snap the bolt head off I have had to do that before and it's fine but when you do it don't just keep loosening the bolt until you snap it cuz it'll snap it off at the thread and make it you know that bottom thread right there and make it really really difficult if you can get a saw in there and you can cut the shoulder part and you have some thread sticking out like that then you can actually just get you your regular nut um tack weld it on there and let it cool down then you can spin it out that way I've done that that too um normally I don't have to do that if you just take your time it might seem like I ain't got time for that it's going to take you three to four times longer to drill one single manifold bolt out on the car on the vehicle or on the truck or on the equipment whatever you're working on um then it is just to sit there and Jack with that one bolt tighten it loosen tighten it loosen tighten it loosen um and you're not destroying anything uh the only other word of advice to have for you guys don't reuse exhaust manifold bolts they've had too many heat Cycles once they tighten and clamp they're fine but once you loosen them usually they'll fracture and break at that point if you have any tips that I didn't go over when removing exhaust manifold bolts I'd like to hear it um I'd like to hear you guys stories about it because a lot of people read the comments and they get a lot of really good advice in the comments for little tips and tricks like that and maybe your comment would help that one person out that watched this video and I didn't exactly explain it right I didn't exactly do the uh the process that applies to them but you put it in the comments and somebody was able to fix their whatever because of you it's the whole reason I do YouTube videos um that's it for this video I got to get the cylinder head back on the 73 and the meantime guys my shop is here in granberry right off Highway 51 if you see my service truck parked outside stop on bu make a trip and if I'm not here to shoot me a message I live pretty close here in the next few weeks once all this Corona stuff comes up and they clear us back to go normal if they ever clear us back to go normal I want to have a get together here at the shop now a little uh open house party in the meantime if you guys have something broke down or you want to fix if it's a diesel truck piece of equipment whatever the heck you've got shoot me a message bring it by the shop and we'll get you fixed up hit the like button subscribe button and get out and fix something

Channel: Stephen Cox

Views: 701,478

Keywords: ave caterpillar chucke2009 stephen cox mechanic steve steve, heavy equipment repair, diesel, repair, mechanic, tools, caterpillar, do it yourself, diy, hydraulic repair, hydraulic, bull dozer, excavator, bulldozer, loader, tractor, stephen cox other channel

Id: qCpJuZenJ_k

Length: 17min 12sec (1032 seconds)

Published: Tue Jan 23 2024