I want to watercool my hot end and my extruders and the NEMA17s are operating within spec, they are rated for 2A, but they are going to be subjected to a high heat chamber (90C).

A fan on my hotend blowing ambient air (90C) at the heatsink isn't going to cool it down. Mine are 86oz/in steppers.

most 3x120mm radiators are rated to dissipate over 600 Watts. Thats beyond what I need, but I do have questions on how much cooling ill need to cool a stepper running at 2A which will naturally run hot + a 90C chamber.

Do you understand why i want to watercool and what I want to watercool now?