OK boys and girls, got her running today. Other than getting the wiring right, everything fit perfectly, motor is completely drop in, the throttle works perfectly, and we have a boatload more torque. It gained about 1 to 2 mph. 1mph with me in it, 2mph with my kids
but accelerates much faster. It will drift with me in it and lots of throttle.
Like I said the only issue was getting the wiring between the throttle and speed controller working. The speed controller is red 5v, black ground and blue signal. The throttle was 6 wires; red, black, blue, yellow, white, brown. So wires match up...but they dont match mechanically. Was able to find a wiring diagram on a website, found that the red and black match, but the blue on the speed controller (which is the signal wire) goes to the white on the throttle. After that the brown is loose and the yellow and blue go to the power light on the controller (red and black separate).
The 12v big buttocks fan i had lying around. It's brushless lol. Mounted quite well to the old speed controller mounts. Few zip ties later, and she was blowing air right on the endbell. Used that ziptie for cable management too. Im not anal about that, just needs to be secure enough to not get grabbed by the chain. It moves a very large amount of air at a full 12v.
The motor and the controller were nothing but warm after driving my buttocks around for a few laps. Im thinking next will be a 12 or 13t pinion to squeeze just a little more top end out before giving in to safety
Thank you all for your help!!!