will jb weld fix a hairline crack in a raditator or what other simple repair will work. allso i have low oil pressure what would cause that thanks

 

On the radiator you could try JB weld or some thing else personal I would just replace it. The oil presure on these engines at an idel is around 7-10 psi how many miles are on it ?

 

Oil pressure, you might try replacing the sending unit, they read low on their way out. For the crack, get some 80 grit and rough it up good and ya you can JB weld. If its brass i would have it soldered

 

Clean the "hairline" crack with muratic acid,
apply some solder paste and solder it yourself.

 

If its a small hole on the tubes JB will work if you get it really clean, If you dont and it still leaks there is no way to fix it unless you cut and solder the tube ends (Not too hard to do)

If its on the tank you need to clean it good if its a small crack you could try to solder it but if it doesnt work go to the hardware store and get a small copper fitting cut it open then flatten it out and shape it and make it into a patch clean really good then solder.

 

ive got a jb welded radiator from previos owner and it works.. 'its better then bailing wire' says so right on the package!!

 

I hit a washout with my 6.2 diesel suburban & the driver's side battery mount broke & the battery tipped into my radiator The neutral post punched a hole in my radiator. I was on a logging road 60 miles from any hard surface. I cleaned it up, and took a heap of JB Weld, gooped it on, put some duct tape on it to hold the glob in place and left the truck for a week while I portaged in to fish. A week later it was just fine and still is 6 years later! It works!!! I also punched a hole in my lower unit on my 40 horse big enough to put my little finger in, globbed JB on it and stuck an American quarter over it & it lasted 10 years.

 

buy a new radiator and rebuild the motor. problem solved.

jb weld on a radiator? come on guys...

 

I JB welded a crack in the upper tank of my 88 toyota about 15 years ago. Still holding.
As advised, clean the area and scuff with 80-100 grit sandpaper real good.

 

I had a John Deere 300 skip loader I bought it cheap from the PO who didnt put antifreeze in it cracked the engine block along a water passage, Cleaned up lobed on a good bit of JB filled it with anti freeze and used it for 10 years that way,And sold it for a nice profit....That stuff works

 

Must be good to have money coming out your ears.

 

About the only way money holds its value anymore.....

 

Not to highjack this thread but I've never used JB so I looked at their site. They've got a JB for everything... I need to get some to keep in my truck.

 

The stuffs even gas proof. I patched a hole in the fuel tank on my zero turn with it.

 

JB Weld is a great product. The problem with Radiators is the constant expansion & contraction of it. Take it to a radiator shop & have them rot it out & brass it if metal.
If plastic buy a new one. Cheaper than fixing.

Craig