[Sirrotica]

At 80 P.S.I. you should have a big safety factor once it's installed in the car. Since copper tubing is usually more malleable than brass and solder joints are used in construction of home water systems as well as radiator and heater cores I don't think 80 P.S.I. is that far out of line for a short term test.

It would be nice if all cooling system components were tested to 80 P.S.I. Maybe there wouldn't be the owner field testing for quality control along with associated warranty and customer dissatisfaction with radiators and heater core that there currently is in the aftermarket product industry. The heater cores currently made in China I've heard of them lasting a year or less. So they'll give you a new one if it fails, big deal, no one is paying for the labor the second time around.

Reputable parts companies going back 20 years or so would help with at least some labor on defective parts, now that is practically unheard of. They exchange the part for you when you present them with the defective part, that's the easy part. It's all about the bottom line and greed, corporate America could give a rat's behind about reputation and standing behind a product that Hop Sing made in a sweat shop on the other side of the ocean.