The Datsun TUNE for the four cylinder Datsuns uses a windows based computer to program this distributor.
Please compare your 4 cylinder distributor with the diagram. What you are interested in is what goes into the block (43mm + 28mm minus 3mm for the clamp = 68mm). The depth from the shoulder that rests on the block and the diameter of that portion (27mm).
If you want to tune your engine, or you have an engine for which there is no standard distributor available..... And you are a Windows PC user, the 123\TUNE is the answer! By connecting it to a computer, you can easily adapt the 123\TUNE to fulfill even the most demanding requirements. The unit offers two sets of curves that can be selected by placing 12 Volt on a wire from the 123\TUNE. Handy, if you're driving on two different fuels, like regular fuel with LPG or with Ethanol
|range:||500 - 8000 rpm|
|temperature:||-30 to 100 Celsius|
|coil:||stock or High Energy coil, primary coil NOT below 1,0 ohm|
|dwell:||constant current, fully autom.|
|time-out:||after 1 second current is switched off|
|spark-bal.:||better than 0,5 degr. crankshaft|
|vacuum:||vacuum advance or boost retard, max. 20 degrees crankshaft|
|max.advance:||45 degr. crankshaft|
|curves:||Two programmable advance curves|
|Programmable:||By Windows PC Software via mini USB cable|
|Rev limiter:||Programmable soft rev limiter ( max 7900 rpm ), 60% of the sparks will cut off|
|wiring:||red = +6V or +12V, black = '-' coil, blue = ground, yellow = curve selector|
|latest software:||123\TUNE version 1.8.4 (9 Mb installer for Windows)|