Exhaust Manifold Crack Repair Jb Weld

Mechanic mate showed me a Astra crank that had Devcon on it. or if there are any must do prep requirements when putting it on. I suggest you take a piece of flat bar and match drill the holes of the manifold, then bolt the manifold to the flat bar, prep the crack for welding. Once the new manifold is installed, these problems should go away. Cleanliness and proper dry time is essential. JB Weld ExtremeHeat is not an adhesive like JB Weld epoxy, meaning it is not designed to bond two parts together; it is intended to repair cracks and holes in high heat parts. It was the lower stud, so I can easily access it. Offers around 5. It is great for repairing cracks, small gaps, seam connections or holes in exhaust manifolds, pipe connections, mufflers, catalytic converters, outdoor grills, fire boxes, gas and commercial furnaces and water heaters. You can also use fine silver spray-paint over the replaced gasket. JB Weld ExtremeHeat is an air cure product that can with stand high heat continuously - upto1300°C /(2400°F. JB Weld on an Exhaust manifold is pointless, the manifold will regularly expand and contract due to immense heat from engine use, causing the JB weld to wear out and fail quite quickly. Reminds me of trying to thread one of my ex-wife's brownies. Find great deals on eBay for exhaust repair epoxy. To answer your questions A merc manifold can work as long as the carb fits and the exhaust elbow connects with the rubber exhaust boot and the water supply hoses are made to fit. Recently I noticed a couple of pin hole leaks in the side of the exhaust elbow. JB weld ok for emergencies. The bolt was broken back.



Most people simply replace a damaged manifold without even trying to fix it or after an unsuccessful attempt at repair. Discuss JB Weld on Exhaust Manifold ????? in the alt. The manifold has an in and out so it will see flow. 0L with cracked block below exhaust manifold, is this a good JB Weld canid Use a grinder to roughen it up the crack,Drill a hole in each end of crack and smear some epoxy on it. Got me home and to the wreckers/parts shop for the replacement part. High temperature jb weld would not work. Exhaust Wrap for cracked manifold My 97 TJ (it has the 2. I have a cracked exaust manifold on my 98 Frontier. now i dunno if me wrapping my header with exhaust wrap(btw the jb weld repair was done on the headers) and when i started driving my car i noticed some weird burnt smell, but i figured since this is a fresh swap and it was pretty much the first day out im just burning off coolant and oil spills. Unfortunately, I had to rig an adapter to connect it back to the previous-generation exhaust system at the bottom. Don't be fooled by the term 'weld'. Cast iron exhaust manifold woes - suggestions? 12-03-2010, 04:07 PM Before I make my spiel, I just want it to be know that I had a **** of a time registering on this site because of that "enter the letters/numbers from the image on the right" section, so hopefully someone can help me!. Used triumph stag stainless steel exhaust. When Fully Cured, This Metallic Compound Can Be Drilled, Machined Or Sanded. Had a local muffler shop guy weld them up for little less than half of what a new one would cost. Heard a mild hissing noise today following engine warm up. The key is to penetrate deep enough to really repair the area, instead of simply patching up the surface. Mazda 6 and Ford Fusion 2. For example, finding a replacement for a cracked intake or exhaust manifold on a unique tractor or odd brand can be a frustrating and downright impossible mission.



If you try to weld it in place, there is a lot of chance that the temperature difference between the welding spot and the rest of the manifold create another crack that will appear just beside. Can cracked exhaust manifold be fixed?. Unlike most cold weld products, QUIKSTEEL XTREME can withstand direct flame contact. Irontite IRN Engine Sealants, Crack Detection, Diesel Engine Repair JB Weld JBW Epoxy Products Kleen-Flo KLN Additives, Brake Products, Cleaners, Hand Soaps, Thread. Or perhaps, it just worsened the crack if it was too small to notice before. 7oz or something outrageous. Posted: Mon Mar 18, 2013 2:54 pm Post subject: Will JB Weld work on an exhaust manifold? I have a Minnappolis Moline U that has a cracked exhaust manifold, I took it to a weld shop and they were unable to weld it,they did heat it first. Metal Repair Compound Makes long-lasting repairs to high-temp, low pressure exhaust leaks from the exhaust manifold to the muffler. Cracked radiator hoses, blown fuses, or worn brakes are all problems that can leave you stranded but in the end are simple fixes that can get you back on the road quickly and easily. I read about someone who used JB Weld on a cracked engine block. We used to repair a fair number of cracked manifolds for Detroit Diesel engines. What concerns me most is, once the car is warm or in motion, the smell almost vanishes or isn't nearly as bad. Once the new manifold is installed, these problems should go away. The result is the JB Weld will start popping off by little bits and eventually crack and pop all the way out. Can I repair a cracked.



Cheapest price, quick delivery, full warranty and fantastic service. The repair to the manifold is good. com FREE DELIVERY possible on eligible purchases. Codes P1600 and P1433 were present. We used to repair a fair number of cracked manifolds for Detroit Diesel engines. High temperature jb weld would not work. the exhaust manifold has developed a leak and the car is now sounding like a tractor, had it looked at in 3 different garages, and its possible to repair but not economical, the nuts on the mainfold may brake and that would then involve having to remove the engine big job, possible big cost. Get product details, choose a store, and get directions. I know it`s only going to get bigger. One of the bearings had failed and it was used to make up for the lack of metal that was taken off the. I used this to repair a cracked exhaust manifold so my car would pass its smog test. The repairs may be made in the foundry where the castings are produced, or may be made to repair casting defects that are discovered after the part is machined. The crack does NOT go all the way around. I did have some luck with a greased pipe plug, slowly turning it while it set up. PM me and we'll talk.



If you were to try and weld it, the base metal (the manifold) and the new metal from the weld would expand and contract at different rates, which would cause a crack, putting you back to square one. It also makes clean-up, welding in fresh material & repair more of a pain since it doesn't clean off as easily as the normal cruddy/grimey parts do. Think engine blocks. Its seen better days for sure. Rust, cracks, scrapes and holes can develop over the lifetime of the vehicle and require repair. J-B Weld ExtremeHeat is formulated to allow for repairs to iron, steel and metal in high temperature environments (2400°F / 1300°C). My IMA (hybrid) battery is failing. I have no access to welding but I hear that you need to know what you are doing to weld cast iron. What started out as a simple method of cold welding in 1969 is now the world's premier epoxy repair brand, and for good reason - it works. Anyone used JB Weld Extreme Heat on headers or exhaust pipe? Im looking to fill in & smooth a header pipe bore/flange connection and would be nice to hear how it holds up to repeated heat cycles/vibrations etc. It may never leak. Like i said, this is only a temporary fix, im not looking to jerry rig it permanently. Someone else said JB Weld is rated to 600 degrees F. A lot depends on where the crack is I guess, Rob. I saw that is likely possible to weld the cast iron manifold with fillers. AutoZone is here with the lowest prices on exhaust repairs of all sorts to ensure you're never left stranded as the result of a clogged-up, cracked or otherwise ineffective exhaust system, so you never need to slow down. Single component resin, along with pressure lock controlled pedestal and syringe system allows for evacuation of existing air in the windshield cracks and penetration of the resin fills the voids with clear, sun activated, fast curing, acrylic resin. Or, you could use epoxy, something like JB Weld. it would hold all season.



looks like you're exhaust manifold tweaker then frank! i'm thinking of just plain getting it welded up and heat wrap it. The crack is located in the middle (not on edge) of the housing on the underside. Allowed the manifold to expand and contract without shearing the bolts or damaging the head, and helped transfer the heat. Repair Any Part Stronger than New in Minutes-Without a Welding Machine Repair aluminum cracks in engine blocks, wheels, and aluminum heads. Looking for J-B WELD 2 oz. Jeff Loughlin's exhaust manifold crack repair. I did grind a V grove in that crack, and used Marine JB Weld for a repair, thinking "it's just an exhaust port, no water could come through there" Well, when I saw that water coming out between the manifold, and head, i also heard a loud explosion, and got water sprayed all over me!. Easy ordering & convenient delivery. and trying to drill them out usually. Bonds which. And it is the most foul thing you will ever smell. AutoZone is here with the lowest prices on exhaust repairs of all sorts to ensure you're never left stranded as the result of a clogged-up, cracked or otherwise ineffective exhaust system, so you never need to slow down. I tried to JB weld mine once, it didn't work, it got so hot the JB weld burnt right off within minutes and JB weld while it's burning really stinks in and outside of the Jeep. MUggy weld sux unless you have an acetelyne torch to heat the manifold up and then youll have to peen the crap out of it so it doesn't crack when it cools, or stick in sand so it cools slowly. Can cracked exhaust manifold be fixed?. Looks like it is a stamping flaw. Works great thanks did High temp JB WELD lasted a couple weeks. J-B WELD 2oz Waterweld Adhesive for sale Patches holes and cracks, and mend almost anything that is broken drains, exhaust lines, manifolds, etc. Nobody ever said operating a Diesel Pusher is cheap.



Skifu wrote:I had a 2 in split on the plastic end tank of my radiator,I removed the tank from the rad,and cleaned it thoroughly,I used epoxy mil 2 part which is like JB weld,and it didnt hold for no time,all its got on is about 16 psi right?it wouldnt even hold on a radiator leak,I doubt it will hold on a manifold. 3 Oz, Red exhaust manifolds, differential covers and more Sets in 1 hour and will not. And it's a small hole (1/16 drill bit). J-B Weld HighHeat Temperature-Resistant Epoxy Putty is rated 5. Can I just JB weld this thing and call it done? It definitely will not hold up very long on a cracked exhaust manifold. Cracked radiator hoses, blown fuses, or worn brakes are all problems that can leave you stranded but in the end are simple fixes that can get you back on the road quickly and easily. 00 and Up Details Order Status 0 Item(s) | $0. I used this to repair a cracked exhaust manifold so my car would pass its smog test. LOCK-N-STITCH Inc. Best is to weld it. JB Windshield Saver is a patented windshield repair system that allows for the DIY repair of damage such as bullseye, star, and stone chips up to 1 1/4" diameter. My question is, how many of you that have done this repair have had the bolts snap? If they did snap, how did you go about getting the bolt out in the confined space?. Think engine blocks. Go boating and just keep a eye for any leaks,if so smear some more epoxy on it. The bolt was broken back. Knead pouches before opening. I just used J. But it will not bond two parts together like JB Weld Epoxy. Posted in Repair Hacks Tagged engine, epoxy, JB Weld, repair, weld. It sounds like fixing the old one isn't the best long term solution.



The rods are a bit expensive and the welding is time consuming. J-B Weld Hi-Temp Red Silicone Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550º F or 650º F intermittent might exist. J-B Weld 31914 High Temperature RTV Silicone Gasket Maker & Sealant, 10. Alternatively, heat the iron to 400 degrees (not glowing), and use stainless wire in your mig - or feed stainless rod in with the mig, you need nickel to keep the weld from cracking later. Repairing exhaust manifold discussion in the Tractor Talk forum at Yesterday's Tractors. The stud is new, so the manifold threads are shot. Find great deals on eBay for exhaust repair epoxy. Most people simply replace a damaged manifold without even trying to fix it or after an unsuccessful attempt at repair. Best is to weld it. Most of us with the 3. I have not had a CEL appear and have had the crack for 1k+ miles. He told me 500 bucks to repair all 4 excluding the two behind the block, or they'd have to pull the engine out, obviously. Step 6: Cut the empty soda can to fit around your exhaust pipe. Test cure by pressing fingernail or thumbnail into repair material. Mechanic mate showed me a Astra crank that had Devcon on it. Im about to bite the bullet and order a new one from Bobs (gulp!), but Id figure Id do a last minute check and see if anybody has any good, somewhat. One way to break down epoxy bonded joints is to heat them with a torch.



As you will see, most manifolds can be repaired successfully when the appropriate tools and techniques are employed. It's not a good repair for a cracked exhaust manifold. Alternatives? If you decide to drill it a couple of things 1) Center punch. j b weld jb spec sheet weight temp specs,jb water weld data sheet kwik specs weight leather repair kit,weld jb clearweld specs epoxy data sheet,jb weld weight shop cold bonding compound 1 oz free shipping kwik data sheet water,heat limits of j b weld jb kwik specs data sheet weight,jb water weld data sheet temp specs extreme heat review. I would put my money on a cracked Exhaust manifold. The o2 sensor. The heating and cooling of the manifold will cause the JB weld to fall off. Can I repair a cracked. Mfg: JB Weld, PartNo: 8257, Name: J-B Weld KWIK Wood Epoxy Stick, Free Shipping on orders over $99 at ToolTopia. But it will not bond two parts together like JB Weld Epoxy. Repair area must be clean. A big limb cracked the carb intake manifold almost to the point of the carb falling off. What started out as a simple method of cold welding in 1969 is now the world's premier epoxy repair brand, and for good reason - it works. Used it plenty of times on failed cast metal things like water pumps and manifolds. A common characteristic of keeping older equipment is that some parts to make repairs can be extremely difficult to locate. I just thought I'd read somewhere that JB Weld (or something like it) was the cat's meow for exhaust work, to include manifold cracks. Wire brush or sand to remove loose rust and dirt. But it should be an available repair - vs - finding a used or new manifold readily available. It is called pinning and it works. machia0705 February 14, 2014.



This Gasket Maker and Sealant is suitable for applications such as intake manifolds, oil pans, timing gear covers, transmission pans and cam covers. could this be what is causing my engine to die at low revs, lack of pressure in the exhaust system? not letting all the crap out fast enough? thanks for the info guys i was so tempted to buy some of that jb weld stuff!. Then two stove 250 heat up cool down cycles. If you have never used a welding torch or. See more like this J-B Weld 37901 Extreme Heat 1300'c Temperature Resistant Metallic Classic Car Extreme Heat Cracked Engine Block Manifold Exhaust Repair Paste 85g. NOS is, for example, what becomes of old OEM dealer inventory when they don't want it on their shelves anymore, someone(s) buys it up and remarkets the merchandise. Aluminum crack repair. If you were to try and weld it, the base metal (the manifold) and the new metal from the weld would expand and contract at different rates, which would cause a crack, putting you back to square one. I just rebuilt my motor and whoever rebuilt it or took it apart before me (it was a salvaged engine at one point) broke off some of the exhaust manifold bolts in the heads. Head and Block Repair. Cleanliness and proper dry time is essential. 3L Engine Swap Exhaust Manifold Removal. If you have them welded up make sure that the mounting surface is still flat (sometimes warps a bit during welding). It is great for repairing cracks, small gaps, seam connections or holes in exhaust manifolds, pipe connections, mufflers,. i used jb weld to patch a hole my old crappy exhaust system had melted into a plastic fuel line joint (yeah, very safe!). I used this to repair a cracked exhaust manifold so my car would pass its smog test. That's when I noticed a small drip on the port manifold, right under the drain plug. Unfortunately it won't fix your exhaust manifold either, it's rated for a max of 600 degrees and it will pop right off. Step 5: Apply repair tape to the damaged area.



Cleaned up real nice but the thermo rod is still frozen - at about half mast - I guess I can live with that. The Honda shop told me I had a crack in the exhaust manifold on my Civic and that it was going to be expensive to replace. Repairing exhaust manifold - Tractor Talk Forum - Yesterday's Tractors Jump to forum order in days for posts. Save on CarGo Thermosteel Thermosteel 2400°F Cold Weld 18003TRI at Advance Auto Parts. I think it may be throwing a sensor off, causing the vehicle to run lean, thereby affecting my fuel economy. Between this, the struts and the leaking cam seal I wish I could afford a new car. Average repair cost is $280 at 99,650 miles. I tried fixing an exhaust manifold crack a long time ago with jb weld. About two months ago, I thought the gasket was stuffed at the Engine Exhaust Manifold so I removed the heat shield and discovered the manifold was cracked across the middle with two cylinders either side. Loctite makes a kit called "stripped thread repair" and it shows it being for manifolds etc. A friend said to try to grind a groove and fill with JB Weld and grind it down. now i dunno if me wrapping my header with exhaust wrap(btw the jb weld repair was done on the headers) and when i started driving my car i noticed some weird burnt smell, but i figured since this is a fresh swap and it was pretty much the first day out im just burning off coolant and oil spills. Or perhaps, it just worsened the crack if it was too small to notice before. Re: cracked exhaust header repair? The problem with just welding up the crack is that it is only a matter of time that it will crack again. If you were to try and weld it, the base metal (the manifold) and the new metal from the weld would expand and contract at different rates, which would cause a crack, putting you back to square one. (see below. 3L Engine Swap Exhaust Manifold Removal. I have recently discovered a small crack in my exhaust manifold right at where the first 02 sensor is located. Used triumph stag stainless steel exhaust.



This Gasket Maker and Sealant is suitable for applications such as intake manifolds, oil pans, timing gear covers, transmission pans and cam covers. just take it off, wire brush it good, wipe it off and put some jb weld on it, wait until it gets hard and then install it. Drizler, The only good way to repair a mairne exhaust manifold or riser is to replace it, PERIOD. jb weld hi temp red silicone 85g - temp resistant up to 343c J-B Weld Hi-Temp Red Silicone Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550F or 650F intermittent might exist. Have repaired cracks in blocks and heads that way on irrigation engines on the stand with JB weld or nickel rod no preheat and both ways they ran for years like that. i cleaned the manifold up, mixed the JB Weld 50/50 and put down a very generous amount on the cracks and spread it wide, let it set for a full day in this arkansas. It also makes clean-up, welding in fresh material & repair more of a pain since it doesn't clean off as easily as the normal cruddy/grimey parts do. LOCK-N-STITCH Inc. Im likin' that RTV idea, i could just spread it on with my finger. Obviously, at 500 degrees heat resistance that might not be the best choice. Unfortunately, I had to rig an adapter to connect it back to the previous-generation exhaust system at the bottom. JB Weld ExtremeHeat is the perfect repair solution. It held for a couple weeks, long enough to find a replacement manifold. Like i said, this is only a temporary fix, im not looking to jerry rig it permanently. We want to sell the boat and don't want to feel like we've tried to rip anyone off. J-B Weld 100% Hi-Temp Red Silicone Gasket Maker and Sealant is an RTV (Room temperature vulcanised) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher continuous temperatures up to 550 F or 650 F intermittent might exist.



Weld it in situ, if the crack is only as far as it is visible then you could just gouge it and fill with weld TIG. add to cart. The crack is located in the middle (not on edge) of the housing on the underside. Stuff and port model airplane engine cases. Then jb weld it, let it dry. NOTE: Exhaust system must be cool before applying putty. The repair will be more secure if you wait even. JB Weld ExtremeHeat Is Formulated To Allow For Repairs To Iron, Steel & Metal In High Temperature Environments Up To 1300 o C. triumph stag rh exhaust manifold. Expert crack repair range from small to large cylinder head, manifold and engine block application. Shop J-B Weld KwikWeld Fast Set Epoxy Adhesive carded 2 oz at Lowe's Canada. How Much Heat Will JB Weld I have used it to repair cracks in the exhaust manifold on a Cat D-6. Dorman Industries make exceptional replacements and range from $100-$300,depending on the application. Screw steel studs into the threaded holes, leaving 3/16” (5 mm) to ¼” (6 mm)of the stud above the surface. I would put my money on a cracked Exhaust manifold. After having to replace broken exhaust studs I wouldn't necessarily do it again and think it was a quick or easy job. Key Features: High efficiency weld metal transfer eliminates electrode overheating Crack-resistant formula eliminates the need for pre-heating or special cooling Ideal for heavy machinery, trucking, bus lines, automotive, marine, and RVs Repair cast iron exhaust manifolds, engine blocks, industrial machines and more Note: Guide the electrode at. We had been looking for a reason to try out the JB Weld Plastic Bonder we found at our local NAPA store, so the choice was.



NOTE: Exhaust system must be cool before applying putty. I got rear ended and the exhaust pipe was mashed forward causing the crack in my Catalytic converter's weld. My dad says I could weld it with a stick welder if I had a high nickel rod. Rated 5 out of 5 by ham8888 from easy to use i bought this hi temp epoxy a couple weeks ago and it works terriffic. Seen it work and last longer then the engine did. Just don't try tightening it anymore if leaking. dont know if it was jb weld or something like that rated for high heat. Cracked License Plate. My limited experience with JB Weld and thread repair has taught me the stuff is too "crunchy" to really accept a tap. The intake manifold cracked. Taking it to a repair shop could cost you quite a. I would only replace the manifold for the leak side and would leave the other side alone if it is not leaking. ok i tried the jb weld high heat putty followed the instruction gave it 14 hours to cure. JB Weld in an exhaust manifold??? If you've got access to taps you may be able to come up with a tap that will work without drilling, particularly if you don't mind going metric. Got me home and to the wreckers/parts shop for the replacement part. Metal Repair Compound Makes long-lasting repairs to high-temp, low pressure exhaust leaks from the exhaust manifold to the muffler. PERMATEX® Hi Temp. Best Answer: Kelly is right on this. Instead it is designed to repair holes and cracks in areas subjected to high heat. Working with J-B WELD is quick, easy, and convenient -- and saves you time, work, and money! Not recommended for use on manifolds, exhaust systems, and other engine components which normally operate at temperatures above 500° F.



Make your repairs, then place the manifold in your kitchen oven at 500-degrees for 24-hours. He told me 500 bucks to repair all 4 excluding the two behind the block, or they'd have to pull the engine out, obviously. Apply product generously, working onto surface or into hole, crack, pit or seam. Shop J-B Weld KwikWeld Fast Set Epoxy Adhesive carded 2 oz at Lowe's Canada. I got rear ended and the exhaust pipe was mashed forward causing the crack in my Catalytic converter's weld. Without a properly-working exhaust system, you won't find your car or truck going anywhere fast - or at all. Cast iron exhaust manifold woes - suggestions? 12-03-2010, 04:07 PM Before I make my spiel, I just want it to be know that I had a **** of a time registering on this site because of that "enter the letters/numbers from the image on the right" section, so hopefully someone can help me!. Repair cast iron exhaust manifolds, engine blocks, industrial machines and more. add to cart. JB Weld ExtremeHeat is an air cure product that can with stand high heat continuously - upto1300°C /(2400°F. I think it may be throwing a sensor off, causing the vehicle to run lean, thereby affecting my fuel economy. We drug the tractor to the shop and cleaned up the manifold with a motor wire bush and chamfered the crack, cleaned the metal with acetone, then applied JB Weld and used a c clamp to compress the crack. I was thinking JB weld for the oil pan, but I don't think I would risk it for the long. 1999 Honda Civic I have a crack in the exhaust manifold. The repair to the manifold is good. You can try some JB Weld to seal the crack. After the past two rides there has been a lot of water in the hull, and yesterday after the ride I pulled the seat and could hear water bubbling, and it sounded like it was coming from under the exhaust manifold.



Apparently the threads are bad. If not the rust and visible water dripping it would be difficult to see. now i dunno if me wrapping my header with exhaust wrap(btw the jb weld repair was done on the headers) and when i started driving my car i noticed some weird burnt smell, but i figured since this is a fresh swap and it was pretty much the first day out im just burning off coolant and oil spills. I wasn't able to find out the alloy, but it feels like a good join, and with a little time with the Dremel and a few washer shims, everything fits like it's supposed to. I think we took that D 6 in on trade and the exhaust manifold. Two worked fine, the 3rd will not hold in the manifold. A big limb cracked the carb intake manifold almost to the point of the carb falling off. As soon as possible drill a small hole at the end of the crack so it doesnt crack any more. One part, water-based ceramic is safe and easy to use. OK, but will it work on an exhaust manifold? _____ Probably not. Additional Information J-B Weld Hi-Temp Silicone Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550º F or 650º F intermittent might exist. The clamp consisted of my favorite cold beverage served in a 12oz can and two radiator hose clamps. Anyone Can Repair Aluminum and Cast Quickly and Easily with HTS-2000 Brazing Rods. at room temperature, you can set a clip light with a 60-watt bulb right near the crack to aid curing. Figured it might be the plug itself, but upon closer observation the manifold appears to be cracked along a casting mark near the plug. The heating and cooling of the manifold will cause the JB weld to fall off. Alpha Rider Exhaust Manifold Gasket Repair Set For Hon da CMX450C Rebel 450 ATC200S ATC200X TRX200SX Fourtrax CB500/550 VF500/700/750 90304-438-000 18291-MN5-650 (4 Nuts & 2 Gaskets) £7. Unlike most cold weld products, QUIKSTEEL XTREME can withstand direct flame contact. Ford has re-designed the manifolds several times over the years. Can I just JB weld this thing and call it done? It definitely will not hold up very long on a cracked exhaust manifold. Exhaust Manifold Crack Repair Jb Weld.