CanTechZ

You're very welcome.

The measurement on my 7/70 is 17.5" back to back of the vertical face on the brackets. Hope this helps.

Hey Carl, TS71-60 notes engine serial number L24-031643 as the effective number, not vehicle serial number. More likely about 03/71 vehicle date of mfg.

@AZ-240z with your car being a 1/71, I would think that it would have come the the early spark plug leads, assuming the TSB is correct. The newer type that had white text and the angled boot on the number 6 started at engine number L24-031643 which according to @Carl Beck's register would not have been until 3/1971. It also makes we wonder when Nissan would have started to install leads with the 1971 date. Is you car an early 1/71 car? Would they have used up the 1970 leads before changing over to 1971? Interestingly the TSB has an error with the "New" vs "Former" labels.

Here are some pics of the 355 mile '76 280Z that sold on BaT in 2020, It has Sumitomo leads that look the same as those you have @ea6driver https://bringatrailer.com/listing/1976-datsun-280z-39/

240's had Yazaki leads, at least for 1970 & 71. I'm not sure about after that. The 1970 dated leads have a straight boot on the plug end of the number 6 lead, they changed to the angled boot on number 6 for 1971. Here is a link with pics I found and posted previously.

Source: https://www.bikebound.com/2015/06/24/what-are-the-motorcycles-in-chips/#:~:text=One of the most common,Patrol officers of the era.

You are not wrong. I have to admit to watching that show as well, Google makes finding this stuff too easy.

From another 1973 Cannon tv episode, a '70 (or '71) 240Z driven by one of the villains. Here are a few short clips, no Zeds were injured in this episode. Lol. I can't same the same for Cannon's car that got shot up later. 20230330_033429.mp4 20230330_040322.mp4 20230330_040433.mp4

Here is a picture showing the wiring for the buzzer, taken when I pulled the dash on my '70. I remember it well as the buzzer and flasher were the only items I missed disconnecting. Almost dropped it.

Doesn't answer your first question but here is a good contribution by @dmorales-bello on doing it yourself. Sorry if you have already seen it.

Very impressive work, looks great. What percent "flattening agent" did you ultimately decide on. It would be very useful info to use as a starting point for whenever I get to this point. I'm very surprised how well some of the black paint has survived on my 7'70. Here are a couple of pics of parts removed from my car, they had only light cleaning and degreasing. On the first I have pasted in a snippet from one of your pics above for comparison. I know this very subjective, but I really like what you have done. .

FYI on these bolts, two of them are quite fussy to remove/install and would be impossible to do in the OE orientation if you don't use the correct JIS head bolts. If DIN bolts with larger hex heads were substituted they would need to be reversed. Not that anyone should be making substitutions when it comes to steering bolts. Just my two cents worth.

Here is a screen grab from a video I took prior to disassembly for my current resto. Also the FSM is your friend, here's an image from my 1970 FSM, steering section. The 72 FSM shows the same orientation.

My 7/70 car is like this, what year is your car? just saw you put year in the topic title. 🙂

A 280ZX convertible conversion that looks very similar went unsold last year on BaT. Not confirmed on who did the conversion, but it appears that most potential bidders could not get past the method of chassis stiffening that was used or the level of rust. https://bringatrailer.com/listing/1979-datsun-280zx-24/

I just had a look in the Nissan parts book and FSM. On the front axle the left and right springs do have different specs for free length and different part numbers. This is from page FA-20 in my 1970 FSM. Ignore the inch numbers for free length, as the conversion is incorrect. It was corrected in the 1972 FSM. Here is the part number info for the front axle. The parts book also lists optional stiffer springs. Interesting that starting with the 260Z, a change was made to use the same spring on the left and right sides.

BaT owned '73 240Z on the block for charity. Lot number 100,000. Should be interesting. https://bringatrailer.com/listing/1973-datsun-240z-229/

You're welcome. Actually I saw 280Z in the topic title. I did notice one other difference between the right and left. The end of the left has more of an angle than the right.

Here is a pair of 280Z arms and blades that I got in trade from @240260280a few years ago. They are not actually correct for my 7/70 240Z but after I removed the black paint they looked good to me. The arms seem to identified left and right by the markings as these in these pic of mine. The right arm is longer, but only by half an inch. (The zero on the tape is in line with the center of the rivet, the photo distorts the view.) Hope this helps, Mike

The upper knob is what I have on my 7/70, used up to 6/72. The more rounded one is used after that for 240's. There are other versions used on 260's and 280's. If I'm not mistaken the later ones used on 280's (maybe 260's) are just push on and don't require a screw. The push on ones also work on the 240Z controls, I have a heater control set from a 12/70 parts car that has them. Must have been installed by the previous owner. The pic above is from @hls30.com in this old post:

Good eye, a lot of interesting cars can be seen in these late sixties, early seventies TV shows. Later in the same Cannon episode a very nice gold colored E-type Jag can be seen. The same era show, Mannix, has a lot of cool cars as well, including the collection of convertibles that Joe Mannix drove. Like this '68 Dodge Dart GTS. From season 4 (1970), on Mannix, a '70 240Z is seen as a background vehicle. (source IMCDB,org)

Looks like a '72 240Z shown for a spilt second on this episode of the TV Series Cannon from 1973. Here's the clip, don't blink. It's about 5 seconds in. 20230222_032712.mp4