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While this is newsworthy, it may not be available outside of Japan... or if it is, will have tariffs added to its already high $25000 dollar price (plus you need more parts to make it work). https://www.theautopian.com/nismos-old-school-hot-rodding-kit-for-its-straight-six-costs-more-than-some-whole-nissans/ https://www.nismo.co.jp/products/web_catalogue/engine_parts/dohc_conversion_kit_l-series_inline-six_engine.html

oh yeah.. As i'm getting fludded with commercials and other sh*t, i'm thinking of leaving this shi tty site.. sorry but i'm verry tired of all that commercials s h i t !!

Years ago i discovered that the plug under the fueltank.. is also NOT Metric. So don't try to put a metric in there.. If you have a old tank save those plugs as they are rare.

Is this vent still around? THX

I mentioned that somebody plugged holes in the 240z balance tube. I was able to run a 1/8-27 pipe tap into the holes, there was enough metal there to get some good threads. I then sealed the holes with 1/8" brass pipe plugs (which I made) and a turn of teflon tape. What's interesting is that I took off a fitting from a 160z flat top balance tube, a barb to male taper fitting. The threads on my 27tpi pipe tap were exactly the same pitch as the fitting from the 260z balance tube. So perhaps Nissan used different thread standards? On to the next problem, vacuum leak. Jim

Too dark, black really. I looked again of my pix of the Franklin Mint manifold above and the true, not light distorted, color is at the extreme ends.

Quite the contrast in colors This is a later manifold testing colors….same material as motorman7 with tubes in place… looks much darker with contrast…

Hi Bob: If you are still looking for a welder I would recommend Elhot Metal Fabrication. He is working inhouse at the Shop club on 6th Ave S. He has done rust repair on 3 of my cars over the last 20 years and he is top notch. Of course with 30 years of experience, he's not cheap. Cheers, Mark G

You are correct, I always has a very good pedal feel and then I did not. I think part of the issue is a bad check valve, and here is why I say that. I ran the check valve test with a vacuum gage installed down stream of the check valve in between the check valve and the brake booster. Warmed up the engine Let the vacuum gage settle down to about 45 mmHg or so (I think that was the number) Shut off the car and watched. The needle proceeded to drop and drop and drop and drop down to zero after about a minute or so. If memory serves last time I did this test, it held. So I ordered a new one. I will have to see if this helps or not. Either way, I suppose it is time to change it out as I installed that one back in 2009 according to my Z maintenance book I keep.

Update. It's been several months when I posted questions about a soft feeling brake pedal in my 79 zx. I checked the vacuun check valve and found it to be defective. I didn't even use my vacuum test equipment but instead just removed it and blew and sucked through it and knew it wasn't holding vacuum. I replaced it and now have very good, stock brakes again.

Yes, take it a lock smith. If the core can be removed from the cylinder it isn't that difficult to make a key. Key blanks are common. I can't recall if the core is wafers or pins. Come to think of it, it's a double cut key, so it would be a wafer lock. To remove the core from the cylinder without a key, not a big deal to pick the lock. I have no idea what a lock smith would charge, but it's not a big deal. When I closed my business I kept all the key blanks, I probably have what you need. Jim

This was a clue that it was an electrical problem. If the engine was still spinning because it was in gear then spark will still move the tachometer needle.

I think you may find @26th-Z and @Carl Beck already have most if not all of the documents. I've hoovered them up for my archive. Will be interesting to see what if goes for this time, I think it sold at least once or maybe twice since the last BAT appearance 6 years ago.

Bring a TrailerVintage Restoration Program 1972 Datsun 240Z 4-SpeedBid for the chance to own a Vintage Restoration Program 1972 Datsun 240Z 4-Speed at auction with Bring a Trailer, the home of the best vintage and classic cars online. Lot #220,101.Has been posted elsewhere on this site but I suggest that someone that is more tech than I am hoover Pierre's Restoration Document for this thread.

Any update. I suspect a gas tank from S30 World might be in my future along with Vapor Lines from Resurrected Classics.

New owner of a 72, first post here, and am having the same problem. I'm surprised everyone's focusing on ignition and not vapor lock? I'd owned two other 240Z's in the past and ran a Mallory Unilite in both and they were spot on. I'd be surprised if that's the cause here but I've been wrong before. Knowing what the issue here might help me as well so very curious about the solution.

I pulled the computer out and took it apart. It looks really good, so I put it back together and started on the ignition module replacement. I followed this diagram that I got from the knowledge base and tried it out, but no joy. I didnt see anything about needing to run it through the ballast resistor, so I left it out of the new circuit. Im not sure which side is + on the coil so I put the new green wire where the old one was. I found another post that had a resistance measurement for the pickup coil. Looks like its suppose to be around 720ohms. Ill check that next time im out. Im sure im missing something, but im was too tired to really use my brain. The module is bolted to the throttle body temporarily. And I broke out my new plug wires as well. Anyone have any suggestions?

I've been very lucky on many fronts in my life. My luck started with being born in this country and continued through being born into my family. However, for this screed I'll stick to the Z world. I started getting paid, $125.00/week, to be a mechanic at a dealer in 1970, talk about luck. I very quickly realized that paying close attention/noticing things were important aspects to becoming successful at my craft. When I opened my now closed shop in 1980 a trickle of unmodified original owner Z cars started to flow through, talk about luck. It didn't take me long to understand the importance of documenting as many details as possible. The results of my appreciation are a large stack of photos of the many fine details of 240/260/280 construction. I also have many sloppy pages of notes describing the fine points of construction and differences between model years. My goodness, I even have several pages of notes describing, in detail, the fasteners used to secure a 240 timing chain cover for production date X. Every time a serious customer approached me for a restoration I would ask, in detail, exactly what he/she wanted the finished product to look like. Before they had a chance to answer I would describe what an original Z looked like from the factory and I'd often show them a few pictures from my collection. The answer was always not just no but HELL NO! They wanted pretty. What does pretty mean? Modern, often 2 stage, paint that has been wet sanded and buffed to near perfection. Powder coated suspension and all the other bits and pieces of modern restoration required to satisfy a customer. To see 2 of my last 3 Z car restorations visit my site and click on Customer Profiles. When a 240 left the factory there was orange peel in the paint in random places. Have to mention that this particular problem improved markedly in about 1975 or so. However, there was often a serious problem with the clear coat discoloring when 2 stage paint was used starting about the same time. The paint on the bottom was applied very unevenly and often contained dirt in random places. Most of the grommets that were glued in place had glue running down from the grommet. The suspension pieces were painted a sloppy and uneven satin black. There was overspray on some of the exterior engine components that were in proximity to the engine block. The list goes on from there. Please don't misunderstand me, I'm not criticizing Datsun, that was the way cars were often manufactured back in the Olden Days. I can all but guarantee that if a real factory-like restored Z showed up at a convention a trophy would not be forth coming. Now to address the hyperbole that has crept into the world of Z restoration. "Frame -off Restoration", "Rotisserie Restoration", "Factory Restoration", etc., etc., etc. There are some new ones now like "Magnificent" and so forth. The situation is often made worse with fancy photography and lighting. This is what happens when marketing geniuses get involved. Remember the Z Store Program? H@#$, now I'm often confused and don't understand what they're talking about. ALWAYS look at the car you're considering or send someone like me to have a look before making that offer. I understand that I've only lightly covered this subject but there you have it for better or worse.

@Yarb

Shame you had to get rid of the 240z but glad to see the 280zx getting some more attention. I just ordered some parts from the US and will try to fix my 280z over the coming winter. I will definitely come visit you this spring with my 280z!

I don't think you or anyone in the States would have given me óver 20 grand for a car that needs a lot of attention though?? (It did drive home to the new owner) and, i also sold some nice parts as a new hood/bonnet and some rally seats! That was another few $$$$ Maybe my 300zxtt would be a good car to put on BaT? I ask myself is it even possible/worth the effort to do this as i'm in europe.. I thought that most cars on BaT are in the USA?

You can also buy Datsun Z blank keys on Ebay.

If you can get down to the tumbler cylinder, it should have a key code on it and you could order a key or a good locksmith could cut you a key if he has a proper blank.

Sorry about that but I HAD to take that call. Every part on that car will pass through the hands of the restorer so why not do it correctly. So many times I've casually helped an owner who's doing a lot of the work himself and he'll often put an incorrect finish on a part or subassembly or use an incorrect part. His reply to my comment about the mistake he made or is planning to make is "well, I never plan to put it in a show". WRONG, every time he takes it out it's in a show. OK, what about cost? In the world of today, and it doesn't make a bit of difference what the marque is, it starts @ 80K. Yes, I said 80K. It will very quickly go up from there if rust is prevalent. "But Mike, I just talked to a body shop who quoted me 25K for the works". Be careful, very careful. Another important issue in the case of Zs is parts. Expect to pay a TON for that rare gem you found after shaking the bushes for a while. Last week I had a chat with a Z owner who recently sold an NOS 240 air injection manifold for 2K. Restoration is not for the weak of heart. Next installment "Factory Restoration", "Just off the boat restoration", etc. How to cut through the hype/marketing.