Remove that tab. Take a small die grinder burr bit or drill bit and clean up the top surface of the broken bolt. Use a new joint washer, and re-assemble the inlet to exhaust manifolds. These few extra minutes . It's shaped like a bolt. Tighten the fixings to 2,3kgf.m (17 lb.ft.) After 3 tries, if its still stuck, then remove the manifold. Step 1: Drill On The Bolt. If that don't work, There's some bolt extractors called ease outs that you can buy and try. This is common on some 4.7 L engines. cherry red but no hotter than that. New set of exhaust header bolts M8x28 (use Porsche bolts as they made of harden steel and not stainless steel) Hope the above info helps you, Good Luck. Remove component. Very common to break and a pain to get at. M8 tapping drill (i used 5 mm and 6 mm drill before using tapping drill (6.9 mm)) 6. Machine the exhaust manifold - $40. Heat the stud and area around it not too hot with a propane torch and then hold a stick of beeswax against the stud base. Let the beeswax suck into the threads. If the pipe going to the manifold is going to be replaced cut the pipe with a Sawz-All or last resort a hack saw. If you cannot remove bolts despite using lubrication, then the next thing you can do is apply some heat to the area around the bolts. Oct 6, 2015. Okay, so I noticed a slight "farty" type sound when starting the truck when the engine's cold (overnight). I learned this trick years ago from an old school . Also, if you break the bolts off flush with the head (the only place they will break), you will be removing the . There are several ways to remove broken exhaust manifold bolts from a cylinder head and I will show you my preferred method. As Dwayne said, remove the rest of the bolts that'll come out, remove the manifold and the remainder of the bolts should come out. Separate the inlet and exhaust manifolds, and remove the joint washer. If there is enough bolt sticking out, try to clamp down on it with vice grips, not pliers, and try to unscrew it. They have their own issues, on occasion, but at least you can grind the heads off, if you need to, and still remove the manifolds then use vicegrips on the bolt still in the head. Then, with the box wrench or socket, try working the bolt back and forth a bit, that's right, try to tighten it. If you have more than one broken bolt, multiply the number by 50. But for all intents and purposes it is one with the exhaust manifold. Try to drill at a 90-degree angle. Wades shows you a little-known trick to help loosen up some of those old, seized and corroded exha. Inspect the bolts and exhaust system for obvious damage before proceeding. Heat the manifold in the area of one stud as hot as you can get it, then try to back the stud out. Twist and pull the spark plug wires out. Some other thoughts: - Keep a couple of bolts loosely in place to support the manifold while you work on the stuck fastener. It has threads like a bolt. The recommended grade of bolts is . If you remove the fender it is much easier to work on. Getting too carried away means you've burnt your valve cover gasket or other nearby items. At least several days before you plan to remove them, clean away surface rust on and around the bolts with a small wire bru. Drill Out. Carefully place a spot-weld (short welds) or two on top of the bolt, trying Not to weld the head, so as to build the weld above the surface. An older mechanic taught me this trick to removing rusty exhaust manifold bolts after watching me snap off a couple. Manifold bolts can be a little trickier than studs. Thread the bolts as far don as you can on the stud. Remove and install the manifold - 4.2 hrs at $80/hr, $336. A couple of firm taps with a hammer may be all it takes. An Acetylene torch with a small tip would make this job a heck of a lot easier but MAP gas is what I am working with so that's that. Man I wishI wouldve known this sooner!Bu. Remove the front manifold fasteners first, then the rear manifold fasteners. To complete the removal, this needs to be removed as well. Loosen the 10mm bolts from the exhaust manifold while the engine is hot. Heating the part with a naked flame in this area is not advised either! Apr 10, 2013. Time, money and frustration. And don't drill with a too big or too small drill bit. Remove the inlet manifold gaskets. Models of the Ford F-150, the top-selling truck in the United States for four decades, have been using the 3.5L EcoBoost since 2011 to provide power and improved fuel . Aug 31, 2008. Place a washer around stud next to the head and weld to stud. If you can't loosen the bolt inside the engine block, then loosen the engine block around the bolt. If you get the head of the bolt hot enough, the heat travels. The usual options of exhaust flanges are the 3 bolt or 2 bolt types. On aluminum headed engines, you can try what Trav suggested. The one downside is, this means drilling away the mating threads. Installation Procedure Table 10 Required Tools Tool Part Number Part Description Qty A 2P-2333 High Temperature Sealer 1 B 5P-3931 Anti-Seize Compound 1 NOTICE Excessive use of sealant can cause damage to com-ponents. They can mill the studs out, but it wont be cheap. Step 1 - Hammer Time Sometimes all your exhaust manifold studs need are a little bit of coaxing. Once weld is below 160deg remove stud/fastener. Then weld a nut to the washer. Repeat that two more times and the last time let it cool naturally, but squirt some LIQUID WRENCH under the head and between the manifold and head (so it gets to the threads), then immediately put a 6-point socket on a ratchet and loosen ONE FLAT of the bolt head, then apply more LIQUID WRENCH and TIGHTEN one flat. Steve. Once all fasteners have been removed, pull the exhaust manifold away from your BMW cylinder head and remove it from the engine compartment. If all these methods fail to remove the broken bolt; then the only choice is to drill it out completely. Turbo aka fluted, spiral, socket and if impact style beat on if not push on ratchet or socket and use box end to try and remove. Use a big breaker bar. I need to remove them both but have only cut down the one. Decided to replace them with FEL-PRO replacement exhaust manifold bolts before they start to fail. The innovative Mini-Ductor Venom . Torque wrench (header bolts torque setting 17 ft/lb) 7. Here's the other end . There are eight fasteners on each manifold. Fortunately, a safe and efficient tool is available to make the job easier. get it good and hot first. Usually, m10 with the 2 bolt option is helpful, and an m8 bolt for the 3 bolt. 3/12/17 5:56 p.m. Soak them. There is a method to this: * Plan ahead. Use a hand held torch to get the engine block around the exhaust manifold stud as hot as possible. It should peel away from the cylinder but if it does stick, peel it away with a scraper and clean the area thoroughly. In this case you will have to tap new; larger threads into the hole and find a larger bolt. Exhaust manifold gasket and hardware - $60. Don't forget to include the price of the new bolts as well. Nov 11, 2009. Soak the bolts in penetrating oil for six hours. As far as replacing it all depends what's left and your skils. Using heat will help the area expand and make it easier to remove the bolts. If all else fails, cut the heads of the bolts off with a torch and pull the manifolds off. I warmed the engine up to operating temperature before I tried to remove the . What are the Options to Remove the Bolts? Exhaust flanges consist of a pair of metal sections that join your exhaust pipe together. The top nut will serve as a stop for the bottom one, essentially allowing you to undo the stud like you would a bolt. Not to mention because there's so much heat on an exhaust manifold, these bolts are tough to get off. Sep 18, 2012. Put the studs in and use the silicone coated gaskets. Trying to operate on these broken bolts from the top is just going to result in frustration, mistakes and dropped sockets. rslifkin Dork. Now, how to get the rusted bolts off: Use an impact wrench. use an air chiesel and cut off the offending lumps of rust. #12. Place the nut, or washer and nut, centered over the weld/bolt. You will have to work quickly before. 3/12/17 5:24 p.m. Heat them up nice and orange, I've been amazed at the crusty exhaust bolts I've been able to remove that way. Learn how to remove stuck exhaust manifold bolts or studs. not cheap all cheap socket versions won't round the corners off the bolt head. 4. Thread this hole to the proper depth using the specified tap.3. Step 4 - Gasket. Most haven't had a problem removing bolts or stud remains from the head. And here's what's left of the bolts. Posted: Tue Oct 21, 2014 4:31 am Post subject: Re: How to remove Exhaust Manifold bolts. clean up the threads with a tap and install a steel locking nut or nut and lock washer. With this in mind, you may want to fix this or install a new exhaust system altogether. Then gently hit the end of the stud with a hammer. Heat bolts with a propane torch as needed. I've heard this method works. My Easy trick to removing broken exhaust manifold bolts. Remove the wheel and tire and then the inner fender liner to gain access to the exhaust manifolds. If not, let everything cool. 1:00. If that doesn't work you can try a Dremel with a cut off wheel to cut stud. Grinde off the head of the STUD or bolt. Shop supplies - $15. This was because it wasn't straight anymore - it had banana'd due to an exhaust leak. This photo shows the manifolds with the engine removed for clarity. Twist the Heli-Coil insert onto the tool until the tab at the bottom licks into the tool.4. Cut the head off with a hack saw and use a file to taper the top so it looks like a bolt. ya only have to cut the runner . Removing a rusty bolt is challenging but not impossible. Should twist right out of the head with a big set of vise grips. Make sure the manifolds arent cracked, really common problem. cleandan. The traditional method . Thread the insert into the bottom of the hole, giving it one final twist to break the tab at the bottom. If there is enough you can try and weld a bolt to the end and then back it out or you will need to drill and tap or drill and put in a threaded insert. 3. You may have to remove the engine to do this, but it is alot easier to work what is left of the bolt with a vise grip closer to the head. Use vise grips. This is important because when you put a new gasket on, it needs . Take the extra effort to remove the heat shield located around the bell housing, underneath the firewall.