Get it for the PC noob
Jim Piston is 6' 1".
360
make sure that the number 1 piston is at tdc on the compression stroke, then look and make sure the rotor is pointing at number 1. if not lift the distributor up and turn it towards the number 1 cylinder and put the number 1 wire on the cap were number 1 is, then wire it 1,8,4,3,6,5,7,2 clockwise It probably means that the piston is between the exhaust and intake cycle and that you need to turn the crankcase 360 degrees. That should put the distributor in the right place.
1/360 There are 360 degrees in a full turn
1/9 of 360 = 360/9 = 40
NUMBER6 PISTON ALSO IN top dead centre
I was told the number 1 piston is at the back side of the motor closet to the passenger side.
#1 piston is the one closest to the front of the truck. K6 mazdatruckin.com
For example, 0 + 360, 1 x 360, 360 / 1.
1/4 of 360 is 90
The number 1 piston on that motor is the first cylinder on the drivers side.