It's not possible to fit the motor in there any other way to change the rotation direction of the motor in relation to the direction the model travels. The reason the instructions mention the direction of rotation is due to the high amount of advance in the motor timing. You will certainly notice it if the motor is spinning the wrong way, just the same as you will notice that driving in reverse has reduced speed and power if it's fitted correctly.
Some models with two motors have one motor rotating CW and the other is rotating CCW. One of the motors in this situation would need to be retimed for the 23T BZ to suitable.
Good day Mark
thanks for the detailed motor advice.
yeah i thought that about the motor direction as it can only be fitted one way.
Don't run this motor with plastic bushings. Fit a complete bearing kit in the chassis. There is a high chance the extra rpm of this motor will melt the plastic bushings.
I wouldn't run a model even on the silvercan kit motor without fitting full bearings. The plastic bushings wear the metal shafts as well as the bush when they are run, and when you do finally fit bearings they are a loose fit on the shaft. Plastic bushings should be considered as shaft supports for shelf models only.
i,ve already fully ball raced the car mate it was my first hop up.
p.s you boys from down under certainly know your tamiya,s.