one of the tubes from the radiator cracked so i want to glue them together..
Sounds like a good plan if you want your car to overheat from lack of coolant. JBweld might do it but it costs more than just replacing the hose.
that won,t work that way. if you can,t afford a radiator hose then get a piece of plastic pipe, cut the radiator hose where it,s cracked and use 2 big screw clamps. that will work until you get the money for a new hose.
There is no glue that will fix that. You can try epoxy and then bolster it with epoxy putty and good luck with that. Pressure in the radiator is not your friend. Way back in the 1970's Triumph started using plastic parts on their cooling system. Time, heat and pressure caused failure of those parts with regularity. Now VW and BMW are using plastic parts in water pumps. They fail with regularity. What did they learn? Plastic will gaurantee profit for the repair shop. A counter argument to my last observation though,was my wife's old '86 Corolla with its plastic radiator. It never failed in over 214,000 miles.
replace them don't glue them, they wont hold long and will cause more problems.
