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Resurrecting an abused 84' 4x4


Logical1

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Hey all, So picked up a 84' 720 4x4 a few months ago for cheap. it barely ran at the time, but the price was unbeatable! I got her home went to work on her!

 

She had no power, sticky brakes, bad alignment, FUBAR electrical and misc other issues. I tackled the engine first, found out it had the 2.0 mileage option engine with a 2.4 head, pulled the head off and found an obviously blown head gasket and copious amount of stop leak in the coolant passages. Figured out the previous owner had put the 2.2-2.4 head gasket on and tried to make it work with all that stop leak. The head was also beat to shit with cracked valves and score marks on the cam journals. I had a z22 sitting around so I pulled the head off it, the intake off the 2.4 head, hogged out the head ports on the 2.2 head to match the 2.4 intake, slapped a brand new weber on and put her back together. Ran amazingly better! however it was randomly not getting spark do to the previous owners wire hack. I have fully re-wired several other Datsuns with L-motors and KA swaps, However this is my first foray into the napz . I did a bunch of research via Ratsun and the net in general. Via a post about wiring a napz into 510 frame by Datzenmike on the realm, I found the minimum wiring to run the engine:

 

Re: z24 ignition ?s how do i wire up a z24 in a 510

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Postby datzenmike » 19 Apr 2011 12:52

E-Blue....to neg side of Ex coil.
B-Black/white to positive side of intake coil. This is where it gets it's switched 12 volt source.
C-White.....plugin for shutting off exhaust side plugs plugs
I-Red....to negative side of intake coil.
 
Based on this list of connections from the distributor, I wired it up accordingly (without using the white wire obviously because of the weber) and ran switched 12v power to the positive side of both coils and tied into the black/white wire to power the dizzy. Now because the harness is FUBAR I am only using my fresh new wiring and so the only wire going to the ignition besides the ones coming out of the dizzy and connecting to the coils, is the 12v switched power. Switched on power to the ignition and turned her over. HOLY MOLY! purred like a kitten on catnip! was, stoked and took her out for a drive. went about 20 miles and got back home, popped the hood, no hot wires, ran nice cool in the lower half of the temp gauge and didn't burn a drop of oil or coolant. However on a whim i touched the coils and they were quite warm, not BURNING hot, but WARM for sure. If I remember right non electronic or points coils will over heat if exposed to full 12v. Also, next to the coils tied into the original hacked harness was a little black plug that i looked up the part number and it turns out to be a Nissan ignition condenser. I thought condensers were only for points? Do I need to use the condenser inline somewhere? I figured the 84' nissan's had electronic ignition as they first started in the late 70's trucks. Anyway, any info would be helpfull and more pics and curious fixes to come!
 
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