While installing a new radiator i broke off the nipple at the filler neck that goes to the overflow tank. Will JB Weld repair this ? It is a plastic and aluminum radiator . 1998 Chevy Camaro 3.8l v6
Fix broken over flow pipe with JB Weld
- Thread starter joealphin
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Part of the water neck broke off with it .Maybe fill the hole with jb weld and then thread in the brass nipple ?
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Originally Posted By: joealphin
Part of the water neck broke off with it .Maybe fill the hole with jb weld and then thread in the brass nipple ?
This sounds like a plan.
You could also use the 'Quik Steel" product for this if you cannot find JB Weld.
Part of the water neck broke off with it .Maybe fill the hole with jb weld and then thread in the brass nipple ?
This sounds like a plan.
You could also use the 'Quik Steel" product for this if you cannot find JB Weld.
Originally Posted By: joealphin
Part of the water neck broke off with it .Maybe fill the hole with jb weld and then thread in the brass nipple ?
That's a tricky repair, even for JB Weld, considering that a radiator is dealing with both heat and pressure and the integrity of the composite material has been compromised.
It's definitely worth a shot as your other alternative is to buy a new radiator. You will want to "rough up" the surface so the JB Weld has something on which to "grab." You can use a dremel tool to do this. Additionally, I would try to reinforce the neck with something like a piece of wire screen or even a couple of hose clamps, (otherwise, my fear would be it would simply blow off under pressure).
Taking all this into consideration, it might actually be easier to simply purchase a new or decent used radiator. I've done a lot of patching in my day, and sometimes what you learn is that it's actually cheaper and easier not to patch.
Good luck
Part of the water neck broke off with it .Maybe fill the hole with jb weld and then thread in the brass nipple ?
That's a tricky repair, even for JB Weld, considering that a radiator is dealing with both heat and pressure and the integrity of the composite material has been compromised.
It's definitely worth a shot as your other alternative is to buy a new radiator. You will want to "rough up" the surface so the JB Weld has something on which to "grab." You can use a dremel tool to do this. Additionally, I would try to reinforce the neck with something like a piece of wire screen or even a couple of hose clamps, (otherwise, my fear would be it would simply blow off under pressure).
Taking all this into consideration, it might actually be easier to simply purchase a new or decent used radiator. I've done a lot of patching in my day, and sometimes what you learn is that it's actually cheaper and easier not to patch.
Good luck
I don't see how putting a brass nipple in the filler neck is going to work.
The threads of the nipple are going to have to extend into the ID of the filler neck. This would prevent the lower sealing surface of the cap (the seal that's under spring tension) from passing beyond the nipple threads; you won't be able to install the cap. Even if you can work the cap passed the threads, the threads may interfere with the lower seal opening when under pressure.
Adhesive will work to re-attach the broken nipple provided it will withstand the temperature and will "stick" to the plastic. I've always wondered what those plastic tanks were made of. If it's some kind of PVC or ABS you can try ABS or PVC pipe adhesive sold at the hardware store.
You shouldn't have to worry about pressure as the pressure is on the radiator side of the lower cap seal. The overflow nipple is located between the lower and upper cap seals.
The threads of the nipple are going to have to extend into the ID of the filler neck. This would prevent the lower sealing surface of the cap (the seal that's under spring tension) from passing beyond the nipple threads; you won't be able to install the cap. Even if you can work the cap passed the threads, the threads may interfere with the lower seal opening when under pressure.
Adhesive will work to re-attach the broken nipple provided it will withstand the temperature and will "stick" to the plastic. I've always wondered what those plastic tanks were made of. If it's some kind of PVC or ABS you can try ABS or PVC pipe adhesive sold at the hardware store.
You shouldn't have to worry about pressure as the pressure is on the radiator side of the lower cap seal. The overflow nipple is located between the lower and upper cap seals.
Do you have a picture of this damage?
There's no pressure there. It should be fine and if it breaks it won't leak much so not the end of the world
i will try to post a photo ,asap
I dont think it compromised the neck itself , just snapped off the overflow nipple
If he were to run a treaded brass nipple into the rad neck and then grind it smooth on the inside of the filler neck so that it is flush with the inside neck surface, that should allow the pressure cap to pass freely up and down. To add further support, I would "dope up" the outside with a "mound" of JB Weld.
Im going to try to reattach the overflow nipple with a generous amount of jb weld
Before you take the plunge, check this out:
http://www.jbweld.com/product/j-b-plasticweld-putty/
Depending on what kind of "plastic" your rad is made from, this might do the trick. They do list certain types of plastic it will not work on, but they do make another brand of "plastic weld."
http://www.jbweld.com/product/j-b-plasticweld-putty/
Depending on what kind of "plastic" your rad is made from, this might do the trick. They do list certain types of plastic it will not work on, but they do make another brand of "plastic weld."
I CANT POST PHOTOS ON HERE . I COULD EMAIL THEM
I think I know what your talking about and that fitting has very little pressure on it. A lot of the newer cars have low pressure radiators. I think JB will work fine. Make sure you let it set for 24 hours before use and it will be fine.
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