yeah it hasnt been right since I installed the motor.
Generally it idles fine, then as you drive it, it'll gradually heat up. I should be more specific, at this stage, it Doesnt overheat, just runs hot.
If you give it a bootful, the temp gauge dial drops real quickly. Then ease off, and it rises again. Issue now is I've just rebuilt the motor, and so now to break in the motor, its gotta be driven hot.
Once its back in, ill get a video of the gauge. Old boy thinks its a guage thing, that the temp cant rise and fall that quickly, but its done similar things on both the factory one and an aftermarket one.