Pressure test heater core

I intend to pressure test my heater core in place to confirm a leak before tearing in to my dash. I have read that we should not test the core at the full pressure cap rating because the core may get damaged. I have read 5-8 pounds max. Any guidance is appreciated.

Thanks,

George

I intend to pressure test my heater core in place to confirm a leak before tearing in to my dash. I have read that we should not test the core at the full pressure cap rating because the core may get damaged. I have read 5-8 pounds max. Any guidance is appreciated.

Thanks,

George
You can not believe all you read.:sarcasmsign::nono:
Let some of it go in one ear and out the other:rofl:
Test it at full pressure cap pressure.
Around 17-18 lbs is safe to test.
The heater core is always under full rad pressure or what ever pressure the cooling system is running at.

Do you suggest a pressure system test pump set up or air compressor as the source for pressure? Got any suggestions on a rig to get me from compressor or pressure tester to the heater core pipes?

Thanks,

George

Do you suggest a pressure system test pump set up or air compressor as the source for pressure? Got any suggestions on a rig to get me from compressor or pressure tester to the heater core pipes?

Thanks,

George

Most parts places will loan or rent you a pressure tester.

But if you have a air compresser and a air pressure regulator with pressure gauge you can T the pressure regulator into the heater hose or small water hose.