
Originally Posted by
WaterWheels
The distributors which have fixed advances, knock sensor ignitions and Motronic systems, use the smaller 10mm type rotor. Ignition systems with mechanical/vacuum advance, like what is pictured, use the larger 14mm type rotor.
If you only mean they said the part about it looking like a later CIS system then fine, it does look almost like a CIS-e or CIS Motronic.
Not sure I understand what you are asking about it being standard or changed. The ignition distributor on the pictured engine is the correct type (there are different ones of that type so I will not say the correct one) for that engine. Pop the cap, remove the rotor and measure either the shaft it slides onto or the hole in the rotor and it will be 14mm. There is also a felt pad under the rotor in the shaft which you should put a drop of oil on every year or so and I’m sure it was never done. If the shaft or hole measures 10mm then the insides of the distributor have been altered and it is worthless unless you also have the ignition system to go with the modification.