I can reach the crack easily without moving anything or taking anything apart. How to repair cracked plastic car radiator with jb weld. Try to fix a cracked plastic radiator with jb weld. 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. Choose an item or category to find the specific products you need. 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.
This is a tutorial on repairing your cracked plastic radiator using j b weld epoxy and kevlar matt. After sanding and cleaning the area, i applied the epoxy. The mixture will set in 4 to 6 hours and be completely cured in 15 to 24 hours. Save on jb weld jb weld plastic weld epoxy syringe 502 at advance auto parts. I had a crack in my radiator on a 1996 volvo 850t5.
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. That being said, i have repaired a radiator with jb weld in the past. The jb weld is great, original repair was still holding. Had a hairline crack in a 14 month old denso radiator in my lexus lx470 landcruiser. Jb weld is a type of epoxy that seals and hardens to close cracks and holes. Radiator cracked, fixed with jb weld, leaking after 2.
It also comes with what looks like a fiberglass cloth. While installing it, i broke the plastic radiator nipple. If anyone has a permanent way to seal the leak without buying a new. I want to use jb plastic epoxy, but there seems to be a bit of ambiguity on wether it will hold. So, i removed the waterweld by scraping it off with a screwdriver and applied jb plasticweld. Jb weld extremeheat is not an adhesive like jb weld epoxy, meaning it is not designed to bond two parts together. Complete instructions on how to repair a plastic radiator 1. Jb weld 8297 highheat 550 degree epoxy putty stick 2 oz. I had a crack on the top tank of a plastic radiator and tried jb weld but it didnt hold. Plastic radiator repair kit advancing polymer repair.
How to repair a radiator with jb weld it still runs. Plastic radiator repair is performed at most auto body shops, but you have to pay for expensive labor. 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. Stop leaks, no removal required, great for radiators, wash fluid tanks, storage tanks, water tanks. Replace the radiator plug on the bottom of the radiator and refill the fluid to the appropriate level. Jb weld series extremeheat, epoxy adhesive, jar, 3. No removal of tank or radiator is required to stop leaks. Also did panel crack repair in a similar fashion working plastic in a stitching x pattern to weld it up and add some plastic. This kit is not recommended for plastic repairs or for use with polyethylene or polypropylene plastic parts. Jb weld is one of many national brands you know and trust carried by oreilly auto parts. Get deals on automotive parts, truck parts and more. Jbweld company offers the most durable cold weld products available products th. Plasticweld syringe is a specially formulated, 2part adhesive and epoxy filler system that provides strong, lasting repairs.
I had a small crack in the front of the plastic radiator, near the top, maybe an inch and. The package doesnt list operating temperatures though. 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. When the resin and the hardener are mixed together, they. Example number 1 your exhaust manifold has developed a stress crack near a bolt. 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. Great for radiators wash fluid tanks storage tanks water tanks use on automotive metal plasticcompositepvc specialty products and more share this on whatsapp. Plasticweld is a handmixable, fastsetting epoxy putty that forms a durable bond to most major plastic types. Would jb plasticweld work well for radiator repair. Get a large tube, just in case the crack is larger than you expected it to be. 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. For other plastics, clean both surfaces and then rough them up with sandpaper if theyre smooth.
How do you use jb weld to repair a 1inch crack in your. 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. I will probably end up buying a new radiator before i go on a long distance trip in the rig next summer. How can you repair a crack in your plastic radiator answers. Realistically, i would have used the nirod followed by brazing as my first choice but point is the jb weld worked. I tred jb weld, but it still leaks a answered by a verified auto mechanic. Step 1 go to your local auto parts store or home center and purchase a tube of jb weld. I hope it works for you but the cycles between a cast iron block and jb are very different. I used jb weld on my old stock radiator with a crack very sim. Radiatorweld is a plastic tank and radiator repair kit designed for.
Apply your mixed jb weld all over the leak area liberally with the wooden tool. Finally, remember that the cooling system is pressurized, so leaking after a. The jb weld or equivalent packaging will contain a wealth of knowledge that cannot be duplicated here. I jb welded a crack in the plastic top the radiator of my hyundai many years ago. If i had some kind of plastic water tank that had a hole in it i would buy this again. Jbwelding upper radiator seam peachparts mercedesbenz. The first step will be to locate the radiators leaking location, with the radiator removed, ma. I tried jb weld and other similar putty but they did not work on plastic. I have a small crack in the plastic part of a radiator.
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. First answerer is right about the different expansion and contraction rates of jb weld. I then reinstalled the radiator, the 47 10mm bolts, and 127 plastic shields, and let it sit for about 48 hours. How to seal a cracked block with jb weld it still runs. 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. 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. I was thinking of draining down the radiator a little, sanding the crack or. I want to temporarily fix my radiator until i can find a replacement at a junkyard. Getting it to hold well is all about the prep work. No jb weld product bonds polyethylene or polypropylene plastics well. Includes epoxy putty, fiberglass cloth, sand paper and applicator brush. 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 first applied jb waterweld, and that didnt work because it didnt bond to the plastic very well. 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. I first tried the jb plastic product, as it seemed to be the best product. Yes, jb weld can repair a cracked cylinder head, but. Im doing it again tomorrow because the jb weld eventually just gave out. Plasticweld will bond a variety of surfaces such as metal, composite, fiberglass and others. 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. So instead of spending a lot more money replacing the radiator this way you can patchett. An allis chalmers c with a similar crack had been jb welded, it didnt leak. How to repair a car radiator leak in the plastic area.
When cured, it can be sawed, drilled, carved, sanded and painted. It will set in just 5 minutes at room temperature and is fully cured in 1 hour. Looking for jb weld series extremeheat, epoxy adhesive, jar, 3. Searching youtube and various other media i have come to two options. 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. I mixed up a fair amount of jb weld, and poured the delightful epoxy over the whole entire area. Jb weld plastic weld repair epoxy putty, 57g canadian tire. Though it had plastic end tanks leak was on the end tank and it was a beater car that i didnt care about. But a third, just jb weld it, is often said seriously. Great for radiators, wash fluid tanks, storage tanks, water tanks.
Replace the radiator cap and remove the engine cover that you placed to keep. Jb weld plastic weld repair epoxy putty bonds instantly with superior strength, and does not shrink or pull away. Mix equal portions of jb weld and then apply and press together. After mixing, it forms a polymer compound that can be molded or used to build up and repair just about anything made from plastic. What is the best material to use to stop a leak in a plastic auto radiator tank.
This kit is not recommended for plastic repairs or for use with polyethylene or polypropylene. How to fix a cracked radiator plastic jb water weld youtube. Jb weld extremeheat is the perfect repair solution. To use jb weld on plastic, first determine the type of plastic. Give them a call before you make the trip down there to avoid wasting your time. I bought permatex permapoxy 5 minute plastic weld from advanced auto parts for. I was told it failed because of the different thermal cycles between the two materials. The thicker the jb weld, the sooner it will break, so applying over the top of the old stuff is asking for trouble. A little coolant weeps out of the crack after a 1 hour drive. If you crack one that is otherwise good, this is worth trying since it cant be used as a trade in anyway.