I have just removed my kart from my trailer and discovered a crack either side of the cylinder head on the water jacket. I filled the radiator with kart specific coolant 50/50 mix and a few days ago we had some bery cold temps in the -2 and -3’s. I assumed it wouldnt freeze since the container said protection down to -35.
Whats the best method of repair? The barrel is barely used maybe 5 hours so i dont want to buy a new one. Ive heard of jb weld but dont know if that will bond well to aluminium. Of course a tig weld would suffice but i think the crack extends up to the top mating surface where the gasket sits.
Can solder work? The max temps on the head shouldnt exceed 100c so would solder not melt ?
The engine is still on the kart atm so i will post pics of it when i find the time