Radiator too small?Bigger better?

KX80 shifter, previous radiator did not leak, but big AF… 11.5”x 16”. So I picked up a rad for the KX80 dirt bike… since the motor is from… what’s the pros/cons of having big vs small? Will I encounter temp issues? Is there a reason for radiator to be mounted at an angle? Not racing the cart. Just for fun/laps.

I don’t see any issue. The downside of running a larger rad is mainly that it will take more time to warm up. After warm up, if it still runs too cold, adjust the lean angle and lean it more towards the back, so that you reduce the airflow. You can also tape some of it and take strips out as it warms up or leave them on if it’s cooling too much