I was testing my car by driving it around on the floor inside my house. I was just slowly driving it up and down my hallway to see if everything was working fine. When I picked it up and touched the motor I noticed it was pretty warm for only 1 or 2 minutes of slow driving inside the house. I took the motor off the car and ran it for about 40 seconds for full throttle and I could slowly hear it get bit slower as the temperature went up to around 115-140°F depending on where on the motor I was measuring from. I'm thinking this is not normal because my 17.5 MMM only gets slightly warm when I do the same thing. I took the motor apart and I could not find anything wrong so what would cause the motor to get hot so quick?