How To Keep Exhaust Manifold Bolts From Rusting

I had a lot of trouble removing the manifold on my 200 I6. Even if there isn't much rust, I never know when a bolt will snap. Is there a geographical component to the exhaust manifold bolts breaking? Starting the truck at 20 below has to be tough on things. o head, you will have trouble getting the stock manifolds to line up on the 4. Exhaust system: in areas with a high amount of wintertime ice or snowfall, the exhaust system is prone to rusting out due to salt or chemical corrosion. Sometimes the manifold mounting bolts are rusted away. 00 to repair ,ouch. You can also use some crumpled aluminum foil to wipe away the dissolved rust. There are typically two bolts that secure an exhaust flange gasket in place. The Chevy 3. Loosen it and watch the. Like the rest of your vehicle, rust loves to hide in those hard to reach locations. The manifold gaskets are not leaking but I need to remove the mainfolds to replace leaking valve cover gaskets. Comparing Exhaust, Cooling and Engine Swaps and Fasteners for Chevy Small Block Engines Over the years, from 1955-on, smallblocks came with a variety of cast-iron manifolds, and in some late-models, with tubular stainless steel exhaust manifolds. Although differing in displacement, these engines are essentially the same design with many interchangeable parts. Rustierizer is a product that will work best for those who have rusted parts they want to restore. The rust removers and breakers are thin enough to pass through between the rust particles and make them a little slicker so they can slide past each other the bolt drill out method has another feature. When trying to remove a reluctant bolt, choose a quality socket wrench with as much leverage as space permits. Removing exhaust manifold bolts is often a lengthy, difficult and frustrating task. Awesome, keep your eyes open on eBay. there will be a. Over time, your exhaust manifolds are going to encounter various issues. I need some advice on the best way to remove a couple of rusted exhaust mainfold bolts on my '89 PCM 351. Use this original equipment quality, metal gasket whenever you separate the turbo from the exhaust manifold on 1. Make sure you also reconnect the hose on the bottom. So I'm 99% sure going to be replacing my exhaust manifold this winter, I think I need a new gasket in between my stock manifold and the block (when someone start my pickup if I'm standing over the engine bay I can see exhaust escape from between the manifold and block)and I figure for as old as my truck is and as cruddy looking as my manifold is I think I might wanna replace the manifold too. One stud was broken off so short that I had to grind it flush with the flange. 5 exhaust manifold - Mopar is shipping Chinese manifolds under the old part #, so you might as well save some money and buy a Dorman.   All the bolts came out of my eldo after 11 years with a short 3/8" ratchet. My whole goal is to Not remove the exhaust manifold from the engine with 176k New England miles on her. These are the exhaust shutters. Can anyone recommend the best way to prevent the rust? I guess I'll never be able to stop it completely but i would prefer it to last a bit more than a year before going rusty again. To change or replace the gasket, these bolts must be removed to allow the exhaust pipe to drop away from the exhaust manifold. 0L and 4:10 rear gears. Dodge Dakota Exhaust Manifold Bolts May Break - 171 reports. If something near your manifold is rusty, some may be carried to it by water and. Now you have a 3/8 diameter pilot hole for centering your 3/8 drill bit or better yet the center drill with 3/8 shank ( I forget the number on that ). Jeff Smith: You're on the right track. The 2001 Ford F-250 has 1 problems reported for exhaust manifold bolts rust and break off. the smaller tip area gives higher psi. I've seen this on some engines to keep the exhaust manifold bolts from turning. Nutcracker type sockets work well in these instances. Using a 13mm wrench remove the 4 exhaust flange bolts that hold the exhaust crossover pipe to the exhaust manifolds on each side of the engine. The nuts securing the bolts rust easily and as they are usually placed in inaccessible areas, it's very hard to remove them. 3 equiped Ford trucks operating in the rust belt have rotted manifolds with broken hardware or rust jacked hardware. Break nuts loose on exhaust manifold to Y-pipe Aug 10 2016, 11:58am Heat the nuts up as much as you can with the little torch, and then douse the studs (try not to hit the nuts) with a strong stream of water from a Windex bottle of some sort. I drilled and tapped and used a stud. Stainless steel will prevent rusting, but you don’t want to use bare stainless steel nuts. So then any open exhaust valve in the heads are going to leak air into the cylinders. This lightweight manifold uses a layer of oxide to prevent rusting. The main purpose of a gasket is to compensate for different expansion, contraction rates of dissimilar materials like aluminum and cast iron. This is simply a penetrating oil designed to remove rust on screws, nuts & bolts that are stuck. After years of extreme engine temperatures, removing exhaust manifold studs can be a near impossible task. method 2 is weld the stud/bolt by putting a washer hole over the end of the broken stud and weld the bolt to the washer with a good healthy tack and build it up until you weld it to the washer and then weld a nut to the washer and undo it. Once exhaust is cleaned just to remove complete rust take a big cloth soked in chemical and use it to completely wrap the exhaust, and keep it as it is for atleast 1 hour. A wire wheel will take a lot of time and you will likely never get it fully rust-free. Then, remove the manifold from the vehicle. Where It All Starts: The Exhaust Manifold. Make sure the oxygen sensor wire is not being stretched. How to Remove A Rusted Exhaust Manifold bolt. This is a common Boxster fault and when they rust the gap between the two exhaust parts. Thought about cutting the bolt's head off with a dremel tool cutting disc. It isn’t perfect but it is simple. method 2 is weld the stud/bolt by putting a washer hole over the end of the broken stud and weld the bolt to the washer with a good healthy tack and build it up until you weld it to the washer and then weld a nut to the washer and undo it. 7 350 or the 5. Anti-seize. Don't expect the 182 manifold to link straight to your 172 center section!. Replace damaged hardware and coat new bolts with anti-seize. When trying to remove a reluctant bolt, choose a quality socket wrench with as much leverage as space permits. Tip : It works best if you can spray the bolts with the oil and then go do something else for a couple of hours. An example of the perils of alloy steel bolts is the 12mm exhaust manifold bolt my friend Brian broke off in the head of his 12V while trying to remove it with a 3/8" drive ratchet, or the 2 12mm turbo mount studs I broke off (and had to extract by TIG welding a nut to them) with a regular box end wrench. Looking for recommendations on exhaust options. Remove any loose rust from the car with the wire brush. Heating the part with a naked flame in this area is not advised either!. Salt spreaders suck! I have seen exhaust manifolds rust through on a salt spreader. I am in the process of replacing the intake/exhaust manifold on my 300Tdi. Don’t be shy about occasionally using a wire brush on the fastener head. The thickness of the material to be welded will determine the heat setting and speed of the bead layment. 8L Ford Lincoln Mercury Navistar Engines (Replaces W701706-S2, N811313-S431) in Cylinder Heads. use silicon and metal gaskets then reassemble with ARP bolts and nord washers? this should keep it fixed, I hope. Real brass exhaust nuts are very tall. 4 and 1 driver side bolt is completely gone,noisy as hell, got an estimate, $2000. Classic Industries offers a wide selection of 1974 Chevrolet Truck parts, including 1974 Chevrolet Truck interior parts and soft trim, 1974 Chevrolet Truck exterior sheet metal, 1974 Chevrolet Truck moldings, 1974 Chevrolet Truck emblems, 1974 Chevrolet Truck weatherstrip and unique accessories, to nearly every nut and bolt needed for installation. It could also mean that the cam lobe has ground down. Socket set (correct size), a hammer and brute force. I can get most of the bolts out with no problem but a few are siezed and the allen heads are stripped out. The intake manifold has a sag in the middle for some reason where fuel can pool, be sure you have dried that out, and then I would blow it out with compressed air copiously, then seal off the intake opening with a home-made blank off plate Another option is the. If thats the case, any untreated steel components run the risk of rusting out fairly quickly. 19! Fastest delivery in the UK!. Is the bolt actually rusted or does it have locking compound? Many factory bolts. Always use the proper tools 1. When trying to remove a reluctant bolt, choose a quality socket wrench with as much leverage as space permits. Loosen the manifold bolts evenly to remove the manifolds, these can be heavy. 304 grade stainless is tough and nearly impervious to rusting, because it has around 20% chromium and 10% nickel content in the alloy. So if they are not leaking it will not hurt to drive it, if hot exhaust gasses are escaping it will errode the metal away. Choosing the Correct Coating for your Exhaust Manifolds. Are rusting exhaust manifold studs common on exhaust post of his single cylinder motor to keep from getting burned by the exhaust created the first header. Whether it's to replace the manifold itself or to get at other parts inside your engine, off the bolts must come. 5" outlet portion. Never spray liquid rust dissolving agent onto a hot exhaust component. Replacing Exhaust, should I replace manifold studs « on: April 15, 2013, 11:21:05 AM » I am installing a new Pypes system on my '78 and am thrilled to have successfully removed my original exhaust system and factory down pipe without breaking off the manifold studs (I have the three bolt flanges). Personally, I have a rule of ordering every bolt and nut that is attached to the exhaust member I'll be replacing. Buy APDTY 14522 Cylinder Head To Exhaust Manifold Stud Bolt & Nut Set Pack of 10 Fits Select 1992-2011 4. Th… Hi there, I am wondering if rust in the exhaust manifold is something to be worried about. If I do take off the manifold, what are the chances of breaking a bolt holding the manifold on. I decided to keep the current bolts for now, but removed rust and repainted all around with a 1200 degree hi temp paint containing a rust inhibitor. Don’t round off the head of the bolt, and DON’T use so much force you break the bolt. Stainless steel bolts are a great way to prevent corrosion in this location because normal steel bolts rust mainly from the multiple heat cycles. It looked as if that bolt was welded to the manifold. One of my exhaust manifold studs was stripped right out of the manifold (that was the sixth - it came off real easy), and I fixed it by arc welding the manifold. I am using Klean-Strip rust converter. The coyote engine I am using for my roadster build came out of a 2016 low mileage F150. Put on your favorite oakleys to shield your eyes, and grind the bolts off. Is the bolt actually rusted or does it have locking compound? Many factory bolts. The studs from the cast manifold to y pipe are seized. Okay so here goes I bought this mk3 supra project back in April of 2019, only had the motor and trans in it. Go ahead and cut off the piece of exhaust pipe you need to replace. As I said be sure to use all those cast iron spacers per original placement, and don't over-tighten the bolts. I have tried tightening them and then loosen them. With my exhaust manifolds off, I stuck a garden hose on the elbow/water inlet of the exhaust manifold, and watched water flow out the 2. And these exclusive. The suggestion to get Headers is a Brilliantalbeit Pricey Solution!. Where It All Starts: The Exhaust Manifold. In a FULL system (i. if I keep giving it. I was thinking of cutting a grade 8. I don't miss these days one bit. These LS7 flanges are very different from the classic three-bolt flange used for years. Whether it's to replace the manifold itself or to get at other parts inside your engine, off the bolts must come. Unplug O2 sensor connector and unclip sensor wire from its support bracket attached to the engine block. While I was under the wheelwell of my RV most of the day, I decided to change the exhaust manifold gaskets too since I have a small exhaust leak. Fresh water manifold should last 15-20 years. Ive read earlier posts about guys getting this covered under the 7yr. I've seen some nasty looking nuts and studs on Buick exhaust manifolds bolts but have never broke one. Broken Turbo Exhaust Stud. Sound is interesting, definatly noticing a bit of an empty can sound but it isnt really bad or anything. Then let them cool back down. Rust burns fast when exposed to the blue wrench. but regardlessSLOT THE BOLT HOLES in the manifold flanges You can clamp the exhaust down tight enough but you CANT keep the head and the manifold from GROWING when they get hot. Intake/Exhaust manifold bolts and washers Post by AbandonedBronco » Mon Dec 03, 2007 8:36 pm Not really sure if they're washers, but I was wondering if anyone knows where to find them besides the dealer. Calyx maintains any cast-iron part of exhaust systems and keeps. Click to expand The bolts I got from MTS seam to work well. 304 grade stainless is tough and nearly impervious to rusting, because it has around 20% chromium and 10% nickel content in the alloy. Would like to change the exhaust manifold on a 580k. Removing Exhaust Manifold Bolts with the Mini-Ductor ® Induction Heater & Flameless Torch. Since even if you could cap the exhaust outlet of your manifolds, the passage where the water enters the exhaust stream is going to leak air pressure back into the cylinder heads though the exhaust passage in the manifolds. This can cause exhaust leaks and performance problems if not addressed. The exhaust manifold collects the emissions from the engine and funnels the gases through the front pipe to the catalytic. Am I gonna have to take the manifold off and drill the broken bolt out or is there an easier way? I doubt it but figured I would ask. Pic heavy! - Hello everyone, Though I did this over a year ago I am finally getting around to sharing my experience silencing the dreaded triton tick caused by rusted and broken exhaust manifold studs. Removing the exhaust manifolds is pretty straight forward stuff. 00 to repair ,ouch. Removing exhaust manifold bolts is often a lengthy, difficult and frustrating task. If the mainofold is heated red hot with a torch it will loosen the rust. Diet Coke doesn’t contain the sugars so it’s generally easier to clean up and doesn’t attract ants. If you paint your exhaust parts with a high temperature paint and then wrap them, the rust issue will either be reduced or completely eliminated. One more word about ARP -- a lot of muscle car or drag race guys will replace every single bolt and fastener in the entire car with ARP. Awesome, keep your eyes open on eBay. (5 bolts) 13. The nuts securing the bolts rust easily and as they are usually placed in inaccessible areas, it's very hard to remove them. Also, make sure that those nice long studs are not bottoming out in the socket you are using to tighten them. You can guess that the rust is a big problem. I guess the high heat plus rust often makes the bolts heads smaller causing a loose fit with a wrench or socket wrench ending with a stripped bolt head. 4) Remove the flange bolts, where the exhaust pipe bolts to the manifold, with a 15mm socket and breaker bar. The Chevy 3. cut the heads off your old bolts and screw them in. StreetRays [Originals] exhaust bolts are rust & corrosion resistant as they have zinc plating which is a good thing to keep your cleanly tucked engine bay looking good for a long time. I have a 99 F250 with 5. Product successfully added to your shopping cart. It isn’t perfect but it is simple. Forcing an ill fitting exhaust pipe on the manifiolds, such as the walker downpipe, could be a cause of tweaking the manifolds out of alignment. The manifold is designed to give minimum backpressure and turbulence. Average failure mileage is 64,000 miles. they rust unless you use stainless which is to soft to hold in my opinion. Remove #1 and #2 sparkplug wires. The more you run a moter will have an effect too. Right now she's sitting on ramps immobilized because of a nasty exhaust leak caused by a lost bolt and pivoting gasket where the header meets the cat section. Exhaust Manifold Bolt Size and Source Just got back from my local hardware supply warehouse and the bolts for my 2000 Dakota with 4. But I have had more than a few where the nut has a tighter grip on the stud than the bolt has on the cylinder head and that is a headache. - Pᴀᴜʟsᴛᴇʀ2 ♦ Jun 9 '15 at 22:26. This can cause exhaust leaks and performance problems if not addressed. (5 bolts) 13. This is simply a penetrating oil designed to remove rust on screws, nuts & bolts that are stuck. The shield can be lifted out by removing the four (4) 8mm bolts that attach the heat shield to the exhaust manifold. from the exhaust manifold. But the view is ruined by the sight of corroded, rust-color exhaust manifolds. A simple coat of spray paint will keep rust and corrosion off the fastener head, and prevent moisture from creeping into the threads. 1997 - 2003 F150 - My "Triton tick" rusted exhaust manifold leak broken bolt fix and story. must be the manifold season,I took mine off today to fix a blow and replace a broken stud,only problem is that when I removed all the bolts the manifold fell in half,its obviously been briken for a long time as the fracture is covered in carbon,the annoying thing is everything undid fairly easly but the inlet manifold refuses to come of the studs joining it to the exhaust manifold so thats a. Hi Guy Any of you who have gas engines have problems with your manifold bolts rusting out. PDI Big Boss™ Exhaust Manifolds deliver cooler exhaust temperatures and increased engine performance. Real brass exhaust nuts are very tall. One of the critical pieces of your vehicle's exhaust system is a Ford F350 Super Duty Exhaust Manifold, which removes all the exhaust vapors coming from the motor's cylinders then sends the vapors through the exhaust system. Start two lower end bolts. In addition, the bolt head could be painted with black epoxy primer, followed by semi-flat paint or clear lacquer. This will cause the heat to move down the bolts into the threaded sections causing them to expand slightly. I can get the assembly from Rock for about $380. Consider painting. I had a horrible exhaust leak that was caused by some backyard mechanic, no not mechanic, only an idiot would replace abroken head bolt with a drilled through hole an use a common bolt, nut and washer, in addition to using common SAE bolts to " secure" the manifold. Vemo Sensor, intake manifold pressure Q+, original equipment manufacturer quality, now only £ 70. The manifold might not have a gasket on there now because I do not think Ford used them when they were put on at the factory but you will want to use on when you put it back on. I need some advice on the best way to remove a couple of rusted exhaust mainfold bolts on my '89 PCM 351. Each one has 2 bolts on it, they are rusted and probably seized tight from thousands of heat and cool down cycles. I have a 2002 F-350 T-tag that is exactly 45 months old and had 25,600 miles on the odometer. Just get all new bolts,spacers,gaskets right from Cummins and replace all the hardware. Order your Ford Mustang exhaust manifold today!. Why VGT Turbo’s Fail—And How You Can Prevent It. How to Clean Marine Exhaust Manifolds (The Best Way) - Improve Sailing. If it is the gasket there is nothing I have seen that is able to repair the leak without removing the manifold and applying a new gasket. Personally, I have a rule of ordering every bolt and nut that is attached to the exhaust member I'll be replacing. Read more Chevrolet reviews to learn about other models. The cat part is #20692-65J00. I cleaned the manifold meticulously with a carbide grinder and preheated to about 350F. 4 and 1 driver side bolt is completely gone,noisy as hell, got an estimate, $2000. What should I spray the rusted bolts with. If the bolt gets stuck you can just stick a large easy out through the hole and get it to turn. I notices that the nuts had some minor surface rust. Clean your exhaust pipe with Wax & Tar Remover by spraying a liberal coat over the entire area, letting it stand for one minute, and then wiping it away with a lint-free cloth. (5 bolts) 13. 5" outlet portion. The manifold shown in the picture has a fair amount of surface rust, but it looks like the bolt heads are still in decent shape. Over time, the exhaust mixer elbow can become restricted with accumulated soot from the engine exhaust, resulting in increased exhaust gas back pressure and loss of engine power. Even if you have to cut the heads of the bolt off then heat the mainifold to get it off the studs that are left it is going to go easier with the flame. Remove the bolts from the exhaust manifold heat shield. One of the main functions of a silencer is to control the exhaust emission and to quieten the engine. Wirebrush parts and apply with brush or spray. The first time I took out the exhaust bolts, I had to apply my torch and a lot of WD-40 to the exhaust flange bolts to get them out. Remove #1 and #2 sparkplug wires. If they have the typical age/rust on them, it may prevent you from torking them down far enough to completely engage and seal the flange gasket. You can also give our customer care team a call to place your order by telephone. So then any open exhaust valve in the heads are going to leak air into the cylinders. Loose bolts let the metal slide so you don't have to stretch it too much and fracture the steel. you can tell by opening the compartment and listening to the motor run. Having said that, I have had problems keeping the exhaust pipes bolted leak-free against the exhaust manifold and have not noticed any differences in engine performance before/after fixing this. This is known issue and very common on 5. Am I gonna have to take the manifold off and drill the broken bolt out or is there an easier way? I doubt it but figured I would ask. How to remove the exhaust bolts that join the exhaust headers on the exhaust to the catalytic converter. For example, exhaust manifold studs are notorious for corroding the shanks thin as twigs and just as easy to break. One place that many often forget when restoring a vehicle is the exhaust system. [Diagnosis:] The exhaust manifold gaskets on the B230F tend to blow out every once in a while. If it is the gasket there is nothing I have seen that is able to repair the leak without removing the manifold and applying a new gasket. Salt spreaders suck! I have seen exhaust manifolds rust through on a salt spreader. Folllow al the pipes coming out of the engine - take pics of all of them and follow them back until they bolt to the next exhaust piece. I would like to know from real world experience how hard it is to remove the converter assembly from the exhaust manifold, from underneath the car. It says it converts rust into a "black primer". The one thing that makes me hesitant is how easy the bolts will come out. Never spray liquid rust dissolving agent onto a hot exhaust component. Get a fair section of the downpipes with the donor LS engine to ensure you have the new-style flange. I had to cut them off. my heads and exhaust manifolds are covered in rust. Even if they snap, they are cheap to replace. 1 mile each way. Once I get the bolts and manifold out should I try to vice grip the broken bolt out?. the book says to remove the exhaust manifold bolts so you have the clearance, i don't recommend this because most of the bolt heads will snap off (don't know why they put steel bolts into aluminum. Then we finalzed the transmission height and tacked the rest of the trans crossmember together. One furthur question. Mopar ® Parts & Accessories Limited Warranties. We have salt ,lots of it up here,plus I snow plow. Stock Gen III/IV exhaust manifolds are fairly efficient and can keep up with 400-plus hp for most. On the right side install the first and third manifold first followed by the second and fourth cylinders manifold. This makes it tough and you may find that it helps to hammer a smaller size metric socket on the heads to get them out. Rust and corrosion can also fuse the exhaust manifold studs to the engine block of your older vehicle. If you've. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The 2001 Ford F-250 has 1 problems reported for exhaust manifold bolts rust and break off. I am in the process of replacing the intake/exhaust manifold on my 300Tdi. Toyota is a Japanese car manufacturer that makes cars, trucks, SUVs and hybrids. Both can be welded with success. The suggestion to get Headers is a Brilliantalbeit Pricey Solution!. Jeff Loughlin's exhaust manifold crack repair - Jeep JK Wrangler How to Fix an Exhaust Manifold Crack With ThermoSteel By Jeff Loughlin This was originally posted on jk-forum. An exhaust manifold for example can take the heat if you careful. There is coolant in the heads which keeps the heat down in them, but the exhaust manifolds don't have that luxury and frankly don't need it. So get a new gasket, bolts, and lock-washers, and put them together at the proper torque. Re: Model L exhaust manifold bolt issue I had a real mess there myself and soaked the bolts in rust penetrant every time I walked past it for a month and I actually still have one in there I havent tried to get out yet but here's how Im fixing mine. It works very well. Personally, I have a rule of ordering every bolt and nut that is attached to the exhaust member I'll be replacing. there is a stub and the 4 bolt flange left bolted to the existing exhaust that presents the issue. then work it backwards and forwards a few times, with a little squirt of the magic stuff now and then. I am in the process of replacing the intake/exhaust manifold on my 300Tdi. Tips and Warnings Park the vehicle in an airy space to avoid the suffocation caused by the exhaust fumes. Cast iron exhaust has been around for many, many years and has been doing the job wonderfully. With something like a high temperature rust converter or maybe B'laster's corrosion stop for example. About 2 or 3 years ago, my exhaust manifold came completely unbolted from my car, and was obviously obnoxiously loud with no boost. I replaced all bolts with OEM bolts. The more you run a moter will have an effect too. But I think the most appropriate answer is: why would you want to prevent all rust?. Cost $1200. It seems to me this manifold is not cast but forged. Re: Rust Removal from Manifold Last summer my 81 140 was running hot so after many hours of trouble shooting i discovered that my manifold was pluged, a differant engine which was laid up for a few years, I removed the riser and it looked good there. CORSA 93>15. You can also give our customer care team a call to place your order by telephone. Does anyone know if the bolts will come out if I am able to drill using an ease out? OBIO3 Dodge Dakota JOIN HERE 10. Insert pin or hex key into the orifice to keep tension off of the pulley as shown via white arrow. Secure the driveshaft up with a piece of wire to keep it secure and out of the way. So get a new gasket, bolts, and lock-washers, and put them together at the proper torque. How hard is it to remove the exhaust from the manifold? As I'm looking into replacing my cats, I'm trying to figure out the best way to do it. Get hi-strength manifold bolts from a speed shop You can use your stock exhaust manifolds but of course headers are better. Remove the exhaust manifolds. Cast iron exhaust has been around for many, many years and has been doing the job wonderfully. One of the critical pieces of your vehicle's exhaust system is a Ford F350 Super Duty Exhaust Manifold, which removes all the exhaust vapors coming from the motor's cylinders then sends the vapors through the exhaust system. Then I drilled a VERY small hole EXACTLY in the center of the grided flat stud (centerpunch). Warm it up if possible 2. You're not paranoid and silly, just have way much not enough other things to keep you busy. must be the manifold season,I took mine off today to fix a blow and replace a broken stud,only problem is that when I removed all the bolts the manifold fell in half,its obviously been briken for a long time as the fracture is covered in carbon,the annoying thing is everything undid fairly easly but the inlet manifold refuses to come of the studs joining it to the exhaust manifold so thats a. Then, with the box wrench or socket, try working the bolt back and forth a bit, that’s right, try to tighten it. The heat reduction will help prevent intake manifold heat soak, which will decrease the temperature of the air entering the engine. The old bolts and spacers fit so tight together that in time they would rust together and when things heated up (engine) with the spacer sized to the bolt it will snap the bolt. Heating the part with a naked flame in this area is not advised either!. Looking for recommendations on exhaust options. Home To get the rust off i like to use electrolysis. If they have the typical age/rust on them, it may prevent you from torking them down far enough to completely engage and seal the flange gasket. Got out the breaker bar. limited to, the exhaust manifold, turbocharger, wastegate, piping and the silencer. $$$$$ How long do you plan on keeping the boat. If bolts dont want to break free, slowly heat bolt until glowing hot, then use vise grips to unthread. With my exhaust manifolds off, I stuck a garden hose on the elbow/water inlet of the exhaust manifold, and watched water flow out the 2. How to Restore an Exhaust Manifold Posted on May 4, 2015 by Jefferson Bryant in Engine , Tech // 22 Comments While headers may offer more performance, nothing fits a specific car like the stock cast iron exhaust manifolds, and when the car is restored or original, they are necessary. Either way, absolutely use copper nuts on the exhaust. it has held up fairly well but having ridden pretty much every day through winter, rain, ice, snow and slush has brought out the rust quite badly again. Tips and Warnings Park the vehicle in an airy space to avoid the suffocation caused by the exhaust fumes. The bolts that hold the exhaust pipe to the engine, I have lock washers on the bolts, I've even used some loctite on the bolts, but they have come loose again on me. Put anti-seize on the bolts to help them come apart in the future. The majority of all cars have exhaust systems which are completely exposed to the elements at all times. I'm hoping this thread will help not only me, but many others out there as well who keep their trucks and want to be able to handle a future manifold exhaust leak via header replacement. 4 liter with 100,500 miles (almost all in salty PA and NY)) I didn't have a torch so I cut the bolts on the front side of the exhaust manifold with a Dremel flex cut off wheel. Used a nut splitter to cut rusted nuts from an exhaust manifold. There is a product that you rub on it with a rag that will keep it rust free. I think that may help prevent exhaust manifold bolt breakage--a common problem with this engine. For MerCruiser center riser small block V8 engines approx 1986-2002 (if you have a 2002, you may need dry joint exhaust, please call us with your serial number) Includes: 2x MerCruiser manifold part number - 860246Q11 (Head to manifold gaskets and 90 drain elbows. Removing the exhaust manifolds is pretty straight forward stuff. Took most of them out with a small 1/4" ratchet, a deep-well socket, and a few bloody knuckles. The first time I took out the exhaust bolts, I had to apply my torch and a lot of WD-40 to the exhaust flange bolts to get them out. Is it safe to put this converter on it and then put engine enamel over it, or should i just sand of the rust? also, should I use 500 degree engine enamel for the heads, or the 1200 degree stuff?. Funny you say that. After you have done this, pat the manifold dry with your clean rag. Plus they would rust out to be almost worthless after a few years. I recommend undoing the backmost bolt first, and leaving one of the middle bolts until the end. Don’t tighten beyond the. What should I spray the rusted bolts with. Of course, before attempting anything drastic (like drilling out), try less invasive methods - the bolt loosening fluids from a car parts store. I live in the south where we don’t have extreme low temps, or salted roads in the winter to weaken the bolts with rust. Removing exhaust manifold bolts is often a lengthy, difficult and frustrating task. Broken exhaust manifold bolts can be the start of a daunting journey of trying to figure out the best way to remove that broken bolt. When trying to remove a reluctant bolt, choose a quality socket wrench with as much leverage as space permits. However, there is a large amount of rust on the exhaust manifold which detracts from this. I bought a 2# spool ($85 bucks!) to do my friends F150 manifold with a hole in it about the size of a nickel. The y-pipe coming of the exhaust manifold is toast. (The good quality, variable speed, 3/8" models, which produce good torque at low RPM, work best. Broken Turbo Exhaust Stud.   All the bolts came out of my eldo after 11 years with a short 3/8" ratchet. * Restriction free manifold for smoother air flow and smoother powerband. Hammer it, spray it again(let it soak if you have time) 4. so my question is after two years on your.