Cooling problems

I had cooling problems that I couldn’t solve for awhile after I did a bunch of changes. Mine had a mechanical clutch fan, so I don’t know if this applies. I made a custom shroud that completely contained the fan. Looked really nice but the car always overheated. I got an oem one that had the fan 1/2 in & 1/2 out of the shroud. All my problems went away.

I am not an expert, but I think that the fan and shroud designs are closely related. If the two are not designed to work together, you might be having problems like I had.

Have you tried measuring the input and output temps of the water going through the radiator? That might tell you if the radiator is working.