Turning torque for engine

Go out and measure your pulleys. They need to be the same size or better yet, the crank pulley needs to be larger.

You need the pump to be 1:1 at the slowest. Overdriven is better.

Engines don’t make themselves overheat.

If the tune up is close it shouldn’t get hot.

I’d say loose the electric fans but most guys won’t do it. Unless they are very good fans they are just getting in the way.