Pacific coast Datsun Posted May 7, 2009 Report Share Posted May 7, 2009 Ive now succesfully swapped 3 of my Datsun's from points to electronic ignition & wanted to do a how to than even the garage mechanic [me included] can do. This writeup will cover the "matchbox" distributor coupled with an electronic ignition coil [bigger] which is the easiest in my opinion. Keep in mind i did this swap on my 72 510 wagon & wiring harness colors may vary from car to car/truck but the concept is the same. 1. you want to set the engine to TDC [top dead center] compression stroke BEFORE removing the points dist. Remove #1 spark plug [closest to radiator] & insert a screwdriver into the opening so that it's flat [level with the ground]...turn the fan or crank bolt until the piston rises up & touches the screwdriver...remve dist. cap & see if the rotor is pointing to the #1 plug wire...also if you want remove the valve cover & see if the #1 piston cam lobes are in the 10 & 2 positions [pointing up]....if so your @ TDC compression stroke. If the rotor isnt pointing @ the #1 plug wire continue to turn crank/fan until the piston comes up again & points to #1 plug wire. 2. Remove the 2 10mm bolts @ the pedestal & the wires attached on the side of the dist. body then remove the points dist. The end of the oil pump drive gear should be in the 11.28 position like this . 3. Remove the wires from the ballast resistor & coil & take out of vehicle. 4. Install new dist. & spin rotor until it drops in place. Now look @ where the rotor is pointing & this will NOW be the #1 plug wire location on the cap. The other plug wires will go COUNTER CLOCKWISE & the firing order is 1-3-4-2. 5. Install new EI coil. 6. The matchbox has 2 prongs on it & are labeled B & C. Youll need to make new wires that run from B & C on the matchbox over to the EI coil. B goes to the + [positive] & C goes to the - [negative] side of the coil. Youll also connect the black w/ white stripe wire[used to connect to the ballast resistor] on the + terminal on the coil. 7. The dist. has a 10 mm bolt that secures it to the pedestal & allows the dist. to be moved side to side to set the timing. For the initial start up i put the 10 mm bolt in the middle. Use a timing light to properly set the timing but you can get it to run ok by ear. 8. Install NEW plugs & gap them anywhere from .040 - .044 OK thats about it as far as "hooking things up". The remainng wires not being used can be zip tied out of the way. Heres a few pix of the setup......... the black wire is B & the orange is C. The 2 wires on the bottom of the pic used to be connected to the points coil [not needed now]... black & black/white wire going to + & orange going to -. wires below it used to attach to the resistor & points coil... I realize theres a few different ways to swap over to electronic ignition & im not claming to be a mechanic but this is the way i did it & it was very simple & works great & i wanted to help out my Ratsun brothers...:cool: 1 Quote Link to comment
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