Step 1 go to your local auto parts store or home center and purchase a tube of jb weld. Get deals on automotive parts, truck parts and more. I have tried to do the same thing in other cracks in radiators, but they were in corners and bends and other areas that didnt hold well. It will set in just 5 minutes at room temperature and is fully cured in 1 hour. I had a crack in my radiator on a 1996 volvo 850t5. I want to temporarily fix my radiator until i can find a replacement at a junkyard. Creating a durable weld repair is not as easy on the radiator as it is on other plastic parts because of the high melting point of the nylon and the harsh operating conditions. Jb weld is a type of epoxy that seals and hardens to close cracks and holes. I had a crack on the top tank of a plastic radiator and tried jb weld but it didnt hold.
Radiatorweld is a plastic tank and radiator repair kit designed for. How to repair a radiator with jb weld it still runs. After sanding and cleaning the area, i applied the epoxy. Finally, remember that the cooling system is pressurized, so leaking after a. Choose an item or category to find the specific products you need. So instead of spending a lot more money replacing the radiator this way you can patchett. Apply your mixed jb weld all over the leak area liberally with the wooden tool. Try to fix a cracked plastic radiator with jb weld. Would jb plasticweld work well for radiator repair. Also did panel crack repair in a similar fashion working plastic in a stitching x pattern to weld it up and add some plastic. To use jb weld on plastic, first determine the type of plastic. I used jb weld on my old stock radiator with a crack very sim. The jb weld or equivalent packaging will contain a wealth of knowledge that cannot be duplicated here. Plasticweld will bond a variety of surfaces such as metal, composite, fiberglass and others.
Great for radiators wash fluid tanks storage tanks water tanks use on automotive metal plasticcompositepvc specialty products and more share this on whatsapp. Fixing cracks in your radiator is a relatively quick and easy job, and you will save on your hard earned cash by simply locating the crack, preparing the area, and fixing the problem yourself. While installing it, i broke the plastic radiator nipple. Plastic radiator repair is performed at most auto body shops, but you have to pay for expensive labor. So, i removed the waterweld by scraping it off with a screwdriver and applied jb plasticweld. Mix equal portions of jb weld and then apply and press together. Includes epoxy putty, fiberglass cloth, sand paper and applicator brush. Replace the radiator plug on the bottom of the radiator and refill the fluid to the appropriate level. I have a small crack in the plastic part of a radiator. I first tried the jb plastic product, as it seemed to be the best product. I jb welded a crack in the plastic top the radiator of my hyundai many years ago. I had a small crack in the front of the plastic radiator, near the top, maybe an inch and. I then reinstalled the radiator, the 47 10mm bolts, and 127 plastic shields, and let it sit for about 48 hours.
Get a large tube, just in case the crack is larger than you expected it to be. I can reach the crack easily without moving anything or taking anything apart. First answerer is right about the different expansion and contraction rates of jb weld. How to repair cracked plastic car radiator with jb weld.
Jb weld 8297 highheat 550 degree epoxy putty stick 2 oz. Seams and plastic tend to flex over time, and will break your jb weld joint again. The mixture will set in 4 to 6 hours and be completely cured in 15 to 24 hours. I have a new radiator but cannot get it installed for a few weeks and my jeep is losing more af that i would like to see. Realistically, i would have used the nirod followed by brazing as my first choice but point is the jb weld worked. Looking for jb weld series extremeheat, epoxy adhesive, jar, 3. The jb weld is great, original repair was still holding. Radiatorweld is a plastic tank and radiator repair kit designed for permanent or temporary repairs on both metal and plastic radiators and plastic liquid storage containers from leaks caused by cracks of 4 or less and holes up to 14 diameter. If i had some kind of plastic water tank that had a hole in it i would buy this again.
Though it had plastic end tanks leak was on the end tank and it was a beater car that i didnt care about. Plasticweld syringe is a specially formulated, 2part adhesive and epoxy filler system that provides strong, lasting repairs. There are many twopart epoxies out there, but jb weld has a very good reputation in the automotive world, not only for bonding plastic to plastic, plastic to metal, and metal to metal, and not only for repairing broken bits in a pinch, but for the repair being so strong that it. The radiator repair kit enables you to melt pure nylon fill material directly into the base material, creating a seamless, strong repair that will last for the long haul. If anyone has a permanent way to seal the leak without buying a new. Give them a call before you make the trip down there to avoid wasting your time. Check the radiator for the leak find it and repair it with liquid jb weld if you cant find it in the car pull the radiator out and check for cracks and rusty colors on the plastic sides where. How can you repair a crack in your plastic radiator answers.
I bought permatex permapoxy 5 minute plastic weld from advanced auto parts for. I first applied jb waterweld, and that didnt work because it didnt bond to the plastic very well. I will probably end up buying a new radiator before i go on a long distance trip in the rig next summer. If you crack one that is otherwise good, this is worth trying since it cant be used as a trade in anyway.
I have a 93 and just noticed a one inch crack in the top part of the radiator on the vertical above the seam on the plastic top of the radiator. When cured, it can be sawed, drilled, carved, sanded and painted. Plasticweld is a handmixable, fastsetting epoxy putty that forms a durable bond to most major plastic types. Jb weld plastic weld repair epoxy putty, 57g canadian tire. I hope it works for you but the cycles between a cast iron block and jb are very different. I was thinking of draining down the radiator a little, sanding the crack or. I tried jb weld and other similar putty but they did not work on plastic. If a engine block develops a crack, jb weld can be used to seal up the crack and prevent the crack from sucking in air or leaking coolant. Im doing it again tomorrow because the jb weld eventually just gave out. Jb weld plastic weld repair epoxy putty bonds instantly with superior strength, and does not shrink or pull away. How do you use jb weld to repair a 1inch crack in your. That being said, i have repaired a radiator with jb weld in the past.
Complete instructions on how to repair a plastic radiator 1. Getting it to hold well is all about the prep work. Jb weld extremeheat is the perfect repair solution. Jb weld is one of many national brands you know and trust carried by oreilly auto parts. The thicker the jb weld, the sooner it will break, so applying over the top of the old stuff is asking for trouble. No jb weld product bonds polyethylene or polypropylene plastics well.
Great for radiators, wash fluid tanks, storage tanks, water tanks. This kit is not recommended for plastic repairs or for use with polyethylene or polypropylene plastic parts. How to repair a car radiator leak in the plastic area. I tred jb weld, but it still leaks a answered by a verified auto mechanic. The first step will be to locate the radiators leaking location, with the radiator removed, ma. Jb weld extremeheat is not an adhesive like jb weld epoxy, meaning it is not designed to bond two parts together. No removal of tank or radiator is required to stop leaks. For other plastics, clean both surfaces and then rough them up with sandpaper if theyre smooth. Example number 1 your exhaust manifold has developed a stress crack near a bolt. How to fix a cracked radiator plastic jb water weld youtube. This is a tutorial on repairing your cracked plastic radiator using j b weld epoxy and kevlar matt. You are better off trying a bottle of bars leaks available at any parts store from personal experience that stuff will sometimes work and sometimes not but its worth a try. Sometimes if there is material to do it a screw with the head ground to the right shape can take the place of a peg. Yes, jb weld can repair a cracked cylinder head, but.
Jb weld series extremeheat, epoxy adhesive, jar, 3. It also comes with what looks like a fiberglass cloth. Plastic radiator repair kit advancing polymer repair. My 1998 bmw radiator blew a hole in it when my car overheated after the serpentine belt slipped off the idler pulley, jb weld would not bond well. I was thinking i could clean it up and jb weld it for a short term fix until i can save a little a get one from cdan.
This kit is not recommended for plastic repairs or for use with polyethylene or polypropylene. Jbwelding upper radiator seam peachparts mercedesbenz. But a third, just jb weld it, is often said seriously. I was told it failed because of the different thermal cycles between the two materials. An allis chalmers c with a similar crack had been jb welded, it didnt leak. I mixed up a fair amount of jb weld, and poured the delightful epoxy over the whole entire area. Replace the radiator cap and remove the engine cover that you placed to keep. Jbweld company offers the most durable cold weld products available products th. What is the best material to use to stop a leak in a plastic auto radiator tank. The package doesnt list operating temperatures though. Radiator cracked, fixed with jb weld, leaking after 2. Had a hairline crack in a 14 month old denso radiator in my lexus lx470 landcruiser. After mixing, it forms a polymer compound that can be molded or used to build up and repair just about anything made from plastic.
Searching youtube and various other media i have come to two options. When the resin and the hardener are mixed together, they. A little coolant weeps out of the crack after a 1 hour drive. How to seal a cracked block with jb weld it still runs. I have tried some glues and adhesives to seal it but they only last a day or so then peel off and it leaks again. I want to use jb plastic epoxy, but there seems to be a bit of ambiguity on wether it will hold.