Zed Head

Did I post this one already? Twice can't hurt...

I checked the parts site and it looks like Nissan new might be available. You never know. Also stumbled across this "Motor Fan" option. Electric. Never knew. https://www.carpartsmanual.com/datsun/Z-1969-1978/engine-280z/water-pump-fan/11 https://www.nissanpartsdeal.com/parts/nissan-blade-fan~21060-n3600.html The motor fan assembly includes a coolant hose fitting and temperature switch. Datsun Z Motor Fan L28E (Option)

I don't know anything about ZCD's fans (no link provided) but @Terrapin Z might have an original fan in good condition. Yours does look in bad shape, although I've never heard of a plastic Datsun fan exploding.

The author is the founder of the magazine. "Ben Branch has been a professional writer for the better part of 20 years, starting out as a contributor and columnist for print publications like Time Out Magazine. As the digital era came of age and print publications (mostly) disappeared, Ben switched to writing for established online publications, then founded Silodrome in 2010. ... If you would like to contact Ben regarding his work here or just touch base with him, you can reach out to the Silodrome team via our official Contact Us page here. " SilodromeBen Branch - Author PageBen Branch has been a professional writer for the better part of 20 years, starting out as a contributor and columnist for print publications like

Forgot to say, it looks like the most awesome mouse house ever. Has to be full of mouse excretions. Wear a mask, hantavirus is still out there.

Good information. Thanks for the followup. There was none, now there is some. Well done.

I sent the barn find seller a message through eBay. I also sent a message to the Silodrome publication pointing out the manufacturing date. The author of that article apparently didn't even look at his own pictures. I think the eBay seller might just be a consignment shop. Doesn't really know what they're selling, and is selling the hype instead. Very weird that the person sells mostly $5 to $30 stuff and suddenly has a $50,000 item up. https://www.ebay.com/sch/i.html?item=226925718575&rt=nc&_trksid=p4429486.m3561.l161211&_ssn=auctionhouse-25 From eBay discussion: New message from: auctionhouse-25 (6) Okay, thank you for the information Reply Your previous message It's well known in the 240Z world that the VIN's vary. Just trying to help you out. Nissan stamps the Manufacture date on the plate as the car is being manufactured. It was built in late 1970. That's just the reality. Good luck. the ID plate clearly shows that the date of manufacture is 9/70, not 1969 auctionhouse-25: VIN HLS30-10683 please look up the vin # Your previous message Hey, the ID plate clearly shows that the date of manufacture is 9/70, not 1969. 1970 Datsun 240Z

No good deed... ☹️

What are you getting?

I was looking for a before and after within Nissan Motor company or the Japanese auto industry as a whole. If Nissan never used cadmium then it seems illogical that they would start in 1969. The S30 is just another car of course. The same fasteners were certainly used across the model range. If they used cadmium in 1965 on a different model, you'd expect them to keep using it on the S30 unless they had a reason to change. When was the shift? And, on your final point there - still no evidence that supports your statement, besides a Nissan document that identifies an alternative plating material. If you had a document that showed cadmium from earlier years next to your document that shows zinc, that would have some weight. Evidence that Nissan removed the word cadmium from their documents would be telling. So far, there have been many many words written on sparse evidence. 1970 was so long ago. All of that paper and ink. How did they get anything done?

Taking sides doesn't lead to learning. Independent thought does. HS30-H might be trying to influence 26th-Z, or just expressing surprise. After roaming the electronic wasteland I finally decided to see what one of the AI models would generate, even though I really hate how you can't do a simple Google search today without AI butting in with an opinion. Supposedly they collect all of the available data on the WWW and distill it down to its essence. BS of course since processed garbage is still garbage. But it did come up with an interesting comment. In this case the absence of evidence is actually telling. The great AI large language scavenger found nothing. But, of course, I also found evidence of a ban, showing the weakness of today's "AI". In 2007, last link below. https://www.google.com/search?q=when+was+cadmium+banned+in+japan JAMA document with an interesting note. https://www.jama.org/wp-content/uploads/2014/06/The-Motor-Industry-of-Japan-2014.pdf

The point was that cadmium is still being used to plate parts for old cars. Zeddsaver is just an example.

I am only talking about the element cadmium, 48 on the periodic chart, and its use in plating metal parts for corrosion protection. Carl Beck suggested that early 240Z parts were plated with cadmium, HS30-H disagrees. Carl Beck says that he had some parts analyzed scientifically, at Honeywell. It's been a long discussion, not one that can be absorbed fully without reading most of the last three to four pages of posts. https://www.anoplate.com/news-and-events/what-is-cadmium-plating/ https://periodic-table.rsc.org/element/48/cadmium

Did Nissan ever use cadmium plating? Was it in use and they switched or did they start with zinc?

So far it appears that cadmium was NOT banned in Japan in 1970. Therefore it is possible that cadmium plated hardware was available in the automotive industry in 1970 and early 1971. Carl Back has evidence apparently obtained from a very reputable high level technology company, Honeywell, that cadmium was present on the hardware he had tested from 240Z's. It's not clear how much. Maybe a plating bath was contaminated and there was just a trace. Mistakes happen, and sometimes deception. There are easily imagined scenarios where cadmium plated hardware could make it on to a 240Z production line, especially since cadmium was not banned and was still used in "more than 1,000 Japanese plants" in early 1971 . At this point the argument is between what Nissan's documents say, and what Carl Beck observed, and what general public documentation from the time period describes. That's the whole thing in a single sentence. All that I've done is add a little bit of clarity. Forum members can draw their own conclusions. The main point, Carl Beck's public service announcement, in a way, might actually be for people working with early 240Z hardware to assume that it might contain cadmium and to take appropriate precautions. Especially since the aftermarket appears to be offering cadmium plated hardware. Maybe Carl got some aftermarket bolts? Who knows. https://www.zeddsaver.com/pages/about-us https://www.nemetalworks.com/cadmium-plating-services

I've spent some time (too much, it feels like) searching for evidence of when cadmium was banned in Japan and most of what I'm finding suggests that it wasn't banned until after at soonest early 1971. Lawsuits were happening but no statements about an outright ban of any form have been found. Here's one example. Article published March 1971. Cadmium still in use in more than 1,000 plants. "Prime Minister Sato has ordered health checks on all workers in the more than 1,000 Japanese plants that use cadmium—a crucial step, since only a handful of those plants take adequate safety precautions. Last week health officials reported that cadmium has tainted much of the country’s rice." https://time.com/archive/6838618/environment-and-now-cadmium/ Environment: And Now, Cadmium 3 minute read TIME March 8, 1971 12:00 AM EST

Carl's comment really doesn't have anything to do with the Restoration program. It's just an interesting aside that suggests that Nissan used Cadmium-plated fasteners on the early cars. His comment stands alone and could be a completely separate thread. So far, all of the comments refuting what Carl has described are based on supposition and interpretation of various documents. "Cadmium was banned", "why would Nissan do that", etc. Those statements are interesting but only describe what Nissan intended or what people think Nissan intended. Having worked for large corporations it's easy for me to imagine years worth of cadmium-plated inventory being used up before the switch to new process inventory. Without a document explicitly stating that cadmium-plated parts were banned from use, immediately, or with a set date, the question remains open. Maybe it's in the Japanese langauge documents.

It does seem odd that a document produced by Nissan Motor Corporation, used for the purpose of "restoration" would add something to the program that was not original to the cars. Although, of course, powder coating was probably not used in the early 70's on the 240Z's. And it's not clear who produced the checklist docuemnt. Could have been a salesperson who did not know what "Cad" really was. Still undefined. The absence of evidence does not prove anything. p.s. the "Cad" discussion is more related to Carl Beck's story of taking some early fasteners to his friends at Honeywell and having them analyzed (why did he do that?). Maybe his friends are still around? Carl Beck's claim appears to be based on science. The other claim seems based on the banning of cadmium's use, in a form undefined, in 1969. Could be that cadmium-plating process was banned but not the use of out-sourced cadmium-plated products. Cadmium is still used in Ni-Cd batteries. Some made in Japan. https://corp.furukawadenchi.co.jp/en/products/indust/column.html

Do you have a reference regarding the ban, and its details? I cannot find anything on the internet besides a single statement that Boeing developed new plating methods because of the ban in Japan, in 1969. But the source did not have a citation. A typical industrial chemical ban has a phaseout period. Large corporations have great influence on regulations. https://www.sifcoasc.com/cadmium-replacements "Boeing began their research into cadmium alternatives in the early 1970’s as a response to Japan’s ban of the use of cadmium in 1969." There is quite a bit out there about Itai-itai disease though. Interesting digression. https://www.int-res.com/articles/esep2012/12/e012p099.pdf Role of experts and public participation in pollution control: the case of Itai-itai disease in Japan1 Masanori Kaji Graduate School of Decision Science and Technology, Group of History of Science and Technology, Tokyo Institute of Technology, W9-79, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan

We'd also need to know more about the people Carl Beck knew at Honeywell. I'd write more if I was here to argue. But I'm just here to learn more. I really hope that you were being self-referential here, in an attempt at humor.

The science shows the reality and the literature represents the image of desired reality. You'd have to know more about the methods used by the Honeywell people to know why they said cadmium was present. Maybe the parts were old stock hardware, produced before the cadmium ban. Old hardware is still out there if somebody wants to pay or knows some insiders at a good lab. Without more information it's just more conjecture. One of many web sites from one of many typical analytical labs, which could do that type of analysis. Triclinic Labs, LLC.Leaders in Solid-State Development and Materials Characterization

@cgsheen1 has turbo experience. darom is already on Hybridz anyway.

I meant the contact surface. The other side, the friction surface. It can get hot spots also. Hot spots are not necessarily bad though. If it worked fine, no chatter or slippage, and it only has 1000 miles I'd just reuse it. But that's just me. Do you know the brand and type? It might give a clue on how appropriate it is for a turbo engine. Nissan used the larger flywheel and pressure plate for the turbo and 2+2 cars. 240 mm instead of 225.

Or it might be that it's not even worn in yet. I don't see hot spots. Might help to post a picture of the pressure plate.

You mean...rocket science?