Our Craziest Cooling Project Yet - Car radiator liquid cooler

This video showcases Linus Tech Tips attempting a highly unconventional cooling project by repurposing a car radiator as a liquid cooling radiator for a high end PC. The crew begins with the premise that water cooling is powerful for moving heat, but explains that the radiator is still a bottleneck in any loop, so they seek to push the concept further than a typical dual 120 millimeter setup. They identifiy the car radiator as having dual loops and plan a makeshift, budget approach to route water through the radiator, into the CPU and GPU blocks, and back through a pump, with the goal of dramatically reducing CPU and GPU temperatures during a stress test. The build process emphasizes rapid prototyping and improvisation, using available hardware, zip ties, and 80/20 aluminum framing to mount the radiator on top of the PC case. Along the way they grapple with leaks, head pressure, and flow issues, often improvising fixes on the fly such as a D5 pump, a shutoff valve, absorbent rags, and improvised tubing reducers. The testing sequence reveals a surprising improvement in thermal performance compared to the original dual-radiator setup, with CPU temperatures peaking lower and GPU temperatures significantly cooler once a continuous flow is established. The video ends with a candid evaluation of the project’s practicality, acknowledging that the setup is far from a polished product but celebrating the experimental spirit and the dramatic temperature gains achieved under less-than-ideal conditions. The sponsor integrations and links are interspersed, but the core takeaway remains a playful demonstration of how far DIY cooling can be pushed when constraints are loosened for the sake of experimentation and learning, even if the result is messy and not production ready.

Topics · diy · hardware · technology · science_and_technology · pc_gaming · cooling_systems