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Hello everyone, this is my first post but ive found this forum super helpful. Long story short i put a '80 cb750c engine that was going to be scrapped on a gocart as you can see from the picture theres no airflow. it overheats after 10 minutes with the heads getting to 367 degrees and the pan...

Nope, the positive terminal is the bolt coming out of the side of the case, negative is the case itself. The brushes on the back of the armature are conecting the rear parts of the armature witch have contnuity causing a short

I do indeed have smoking cables and very hot batteries

Ok thats all I wanted to know. I didnt know if there was something unique about the motors or electrical system. Thank you

Ok so now when a battery is plugged into the motor... it shorts the battery and does nothing. Aswell if I use the relay in the circuit too it still does not work

I understand how motors work. what Im saying is should the motor have contnuity from ground, Negative, to positive? I know that it shouldnt because it should have resistance but it dosent. is there something unique about these motors or have I just been unlucky with ebay

yea I know the thing is the armature seems to be shorted in the exact same way on all 3 motors, am I just unlucky?

Yep Ive tested them with and without the relay and on and off the bike with diferent batteries too

I just picked up a 1982 cb 750C and the guy claimed the motor turned over. It wont, it just shorts. there is direct continuity from positive to negative. all of the rear contacts of the armature have contnuity to each other. I thought "okay ill just get a new one" I got a used one on ebay, same...