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Well I made it! Got in late and just laid low. Had a beer with my local Z buddy from home. We met along the way for the last leg near Nashville. Man was that a long trip. But we made it!!!!!! I'm not sure which surprised me more with the success... Me, or the car!!😃

Proof I made it! This is at the judged show. I wasn't ever able to register though because I think it was full. But the zcon organizers liked the car and told me to park it on the show field anyway. Im honored!!

@Yarb has been trying to track down an electrical problem…

I reckon that they saw the PA license plates and determined that if you were crazy enough to drive it down to Nashville, your car deserved to be seen with the rest of the cars.

You can download the Factory Service Manual for every year of Z car at nicoclub.com ( https://www.nicoclub.com/datsun-service-manuals ) Coil specs: Engine Electrical EE-26. Electrical Schematic: Body Electrical BE-5 I described the wiring for the tach operation above but: The coil gets battery voltage at Ignition ON through a Black/White wire. Black/White is a Nissan standard throughout the Z cars of the 70's for "battery voltage (or whatever the alternator delivers) when the ignition switch is in the ON position. NEVER assume a Black/White wire in a Datsun has anything to do with GROUND - IT DOESN'T! BUT - the 240Z Tach works on amp draw. SO, the tach needs the B/W that powers the coil to run through it (the tach) FIRST (before it feeds the coil). A ballast resistor was common for ALL single coil distributor engines of that era. Nissan designed the circuit so that power to the coil when through the BALLAST before the tach and coil. That's why the wiring is a bit confusing. IN THE STOCK CONFIGURATION, There are three (3) wires that make this happen: TWO Black/White (B/W) wires and ONE Green/White (G/W) wire that are in the harness bundle that pass in front of the radiator core support and then through a hole in the left side and end up in the coil area. (The coil and the ballast resistor are side-by-side) IF all three of those wires are temporarily disconnected. ONLY ONE of those two B/W wires will have power at IGN ON. Stock config: The B/W with battery voltage would attach to one side of the BALLAST. The Green/White (G/W) would attach to the OTHER SIDE of the BALLAST. The G/W returns to the TACH. From the Tach, the SECOND Black/White (B/W) RETURNS to the COIL "+" terminal. (IF you were eliminating the ballast for some reason, the B/W with power should attach to the G/W so it feeds the tach before sending power to the coil through the second B/W...) THUS: B/W from IGN Switch -> BALLAST -> G/W back to TACH -> B/W to "+" side of COIL...

Sorry, that is positive earth smoke. It won't work on our negative earth cars.

Great Job Bruce!!!

Sometimes the journey is more rewarding that the show, congrats on all your efforts to make it to the event! Let's see what it can do on the track.

Little update as I don’t have much time to work on the car. After connecting the AFM to a spare battery and testing the voltage on pin 7 I noticed very inconsistent voltage readings and a lot of gaps in the carbon track even though it doesn’t look damaged. And yes I know the AFM has a logarithmic scale with a range of 0 – 9 Volt, Its basically just a voltage divider and a potentiometer in one. Here is a picture I found together with the link and some other useful links (last one is for a Range Rover but it’s the same concept and same Bosch style AFM). https://www.atlanticz.ca/zclub/techtips/afm/sizeupgrade/index.html https://www.atlanticz.ca/zclub/techtips/afm/index.html https://www.gomog.com/allmorgan/AFMadjust.html After a bunch of searching I did fine more reference pictures of the Datsun 7 pin AFM’s and other Bosch AFM modules of the same type, that bend is 100% not supposed to be there. I did notice that if I press the copper part of the wiper hard against the carbon track I do get some sort of reading but so maybe somebody tried to “fix” the AFM by bending the wiper. Unfortunately the track has failed in its entirely and I can’t find anybody that can fix the circuit board. Enlarging the bolt slots and moving the wiper to a fresher part of the track also didn’t work. This lead me deep into the Bosch AFM rabbit hole that is the world of Datsun / BMW / Porsche forums. I found an Australian forum post that mentions a slightly larger 90’s Toyota AFM being plug and play for his L28E 280Z(X?) with the part number F201 13 210 (197100-3420). This is also a 7 pin style AFM With the same internal (and pin) layout as the Datsun 7 pin AFM’s. When looking if I could find this AFM in Europe I actually found one at a local junkyard from a 1988-1992 2.2i GT Turbo 12V Ford (USA) Probe for €25,- so I ordered it immediately to try and test this theory (same AFM was also used on the Mazda 626 and 929, also found a part number from Standerd "MF9107"). The original post did mention you need to loosen the tension on the flap by 3 teeth as the flap is bigger than the Datsun AFM’s. https://www.viczcar.com/forums/topic/6951-larger-afm-for-a-280zx If this doesn’t work I will continue to look for an replacement Datsun AFM that doesn’t break the bank (I know, that’s a tough one). I might also look into making a custom plug and play MAF swap. I found a US based company called Split Second that makes MAF to AFM conversion modules and MAF conversion kits for BMW’s. They also have a 0-9 Volt module (PSC1-009) that might work with the stock Datsun ECU in theory. https://splitsec.com/product/psc1-009-programmable-signal-calibrator-afm-to-maf-hv-output https://splitsec.com/wp-content/uploads/technotes/TN2_AFM_to_MAF_Conversion.pdf And yes I will post all my findings online as there isn’t much information to be found about AFM sensors and there alternatives. Also no I don’t want to carb swap my car, I want to stay EFI but don’t want to spend thousands yet to upgrade the entire EFI system. If anybody has a 0-5 Volt (or 5-0 Volt) AFM module that needs a rebuild / modernization I found an interesting company in Switzerland called SyncroSweets that swaps the wiper potentiometer for a modern programable potentiometer that’s plug and play. https://www.syncrosweets.ch/en/luftmengenmesser

It should be 36psi with the car not running! It should drop at idle based on manifold vacuum

I would. But it will take me 35+ hours to get there. If I leave immediately. And break the speed limit.

On the south side of Knoxville. Letting him cool off for a little bit. Anyone from the forum there who would like to have a beer with a weary traveler tonight?

Thanks for the reply and it does make sense. Maybe I'll see if I can find another tach or a replacement smoke kit. Hopefully Lucas parts would be compatible with our Z cars!

Update from the Good Captain: He called me from Bristol, VA. He's making good progress, and the car is holding together, though he is still concerned about the cooling capacity of his radiator. I told him to run the heat, too, but he declined. (Obscure reference: Watch Gumball Rally when the Camaro is running hot.) He expects to hit NashVegas this evening.

Texted you...does you phone do texts? 🤣

So I considered registering the OG for the judged show just for entertainment value*. But I could not figure out how. I could not see any option to attend. Is that show full and they aren't accepting any more entrants? Anybody have a phone number for someone on the org committee? My electronic footprint is low while I travel, but I can text. *Him - "Dude, your car looks like asss, why are you here?" Me - Yeah, your car is beautiful, but I can see 1000 things that aren't original. And I drove mine almost 1000 miles to get here.