Zed Head

That's another failing of the message from the authorities. Confusing masks and face coverings. I think that the reason for a face covering at the supermarket is mostly because we all touch many things that we don't buy and we're in close quarters to the items. Think about how many steaks or packages of chicken that you've picked up and put back on the shelf, or containers of milk, or bags of chips. The handles on the carts or baskets. The credit card machine, the conveyor belt. All pretty close to your face and the droplets will just sit there for the next person to come along. Another thing that people tend to do is the "all or nothing" approach. If the face covering doesn't stop all of the virus carrying droplets then it's a waste of time. The reality though is that the effort is about minimizing the spread. Cuomo points out every day that New York has an R value, or spread value, of 0.9. All it takes is a small percentage of the population to start infecting more than one person each, and the whole thing starts again. Here's a good story to read or pass along to people who think that the virus can't spread by breath alone. They knew and they took precautions. But no face coverings or masks. https://www.latimes.com/world-nation/story/2020-03-29/coronavirus-choir-outbreak

It's a mulitlayer moral dilemma isn't it? Do you sacrifice people to save people who are too weak to handle the change in their lifestyle? How do you determine value? (Edit - sorry motorman, I didn't mean to imply that your friends were weak. The reasons for suicide are complex.) These discussions are similar to the environmental discussions, just more extreme. Loggers who "need" trees to cut down, and will cut down everything they can find. Fishermen who need to fish until all of the fish are gone. People need to drive their cars or fly to the global warming conferences. Human beings supposedly are "superior" to other animals because we are adaptable. We change as conditions change and control our environment. That's why we are spread around the world. If you dig down in to the rationale of the cure being worse than the disease, it mostly comes down to comfort. People miss their routine and society is designed to reward only people who do "work". The methods and means exist to learn to live with the virus. But, ironically, many people don't want to put in the real "work" to do it. We're almost back to the "death panels" from early Affordable Care Act discussions. Finally, a cartoon - https://www.theguardian.com/world/ng-interactive/2020/apr/16/david-squires-on-the-coronavirus-hot-take-factory

Might as well check the wire ends to be sure something didn't short. Not connected doesn't necessarily mean not powered. Here's some FSM stuff. They show the relay locations in there also.

@Captain Obvious knows the 78's well. I remember something different about how the brake warning light works on the 78's because they have the internally regulated alternator. Not sure. It's after midnight east coast. You might explore the wiring diagram in the Engine Electrical chapter.

I have an account on that other site. I could send him a message for you. Send me a message via the messaging thing on this site if you want me to pass on a phone number and you want to keep it private. You can hold your cursor over my screen symbol, the two stud remnants and "Message' will pop up. Or I can send you a message and you can reply. 240260280 has, or had, an account over there also. He could do the same. I'm not sure he was on good terms with some of the guys there though, for some reason. @240260280 I was on the site today and saw that BRAAP had been on it in January. So he's out there somewhere.

Better than the close ratio that you had in there. Close is 3.062 first, wide is 3.321. So it should be easier on the clutch when taking off in first gear. There are people out there looking for the 3.36. So if you swap it out don't toss that 3.36 diff.

Don't forget that these old cars had terrible passenger protection, for crashes. Even the ZX's. No airbags, no crumple areas. Poor steering in an old car at 130 mph with half the people around you on a cellphone...not good.

That's not what you said in your first post. I think that your friend is irresponsible and should be reported for spreading information that is counter to CDC guidance. He's not the President of the United States. Even if he thinks he knows better it is irresponsible and dangerous to suggest that the organization that he works for is giving illegitimate guidance. It puts everything the CDC is doing in to question. That's where I'm coming from. https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html CDC on Homemade Cloth Face Coverings CDC recommends wearing cloth face coverings in public settings where other social distancing measures are difficult to maintain (e.g., grocery stores and pharmacies), especially in areas of significant community-based transmission. CDC also advises the use of simple cloth face coverings to slow the spread of the virus and help people who may have the virus and do not know it from transmitting it to others. Cloth face coverings fashioned from household items or made at home from common materials at low cost can be used as an additional, voluntary public health measure.

The latest on hydroxychloroquine. https://www.politico.com/news/2020/04/20/trump-hydroxychloroquine-coronavirus-196191

I've posted this before. I read the work of the professional scientists and trust them. Not the words of somebody who sounds confident, for no apparent reason. Why would you pass on the words of somebody with no reason to know more than the professionals? How can you "not care"? Really, what was your reason for posting that pseudo-knowledge? Doesn't make sense. "A guy that works at the CDC". Could be a security guard. Would you trust him to treat you if you had COVID-19? That's the problem with being "rational". You can rationalize anything to make it sound sensible. Here's a good one - sunlight kills the virus. Therefore, if you're out in the sun you can't get it. Everybody should, therefore, go outside. Where they'll be safe. Makes sense? And, on pseudo-experts. What happened to hydroxychloroquine? https://www.politico.com/news/2020/04/20/trump-hydroxychloroquine-coronavirus-196191

I'm still waiting for gas prices to drop here in Washington, even though they should be paying me to fill up. https://www.theguardian.com/world/2020/apr/20/oil-prices-sink-to-20-year-low-as-un-sounds-alarm-on-to-covid-19-relief-fund

BRAAP is Paul's screen name on Hybridz.org. You used your real name but most people come up with some sort of clever internet name. "BRAAP" is the sound a race engine makes, so that's the name Paul chose on Hybridz. I think that he also had an engine-building business for a while, Ruschman Motors, or something like that. Here's his profile from Hybridz.org, and a page he made about one of his cars. Hybridz.org has slowed down a lot since Paul was active there. p.s. when you reply, write outside of the box of the quoted material. https://forums.hybridz.org/profile/16-braap/?tab=activity http://www.datsuns.com/projects/paulrproject.htm

Paul Ruschman is BRAAP over on Hybridz. He's been more of an EFI, fuel injection, guy over there. He's been out of the Z picture for a few years, not sure why. Sounds like fun.

What does he do there? Is he a professional? I ask because there are professional viroligists who determined that face coverings were helpful. I've worked with many people who were at a high level in their profession but understand very little about mine. I've posted about the problem of being a smart person in the past. If you know a lot about one thing you start to believe that you know a lot about everything. Need some background on your friend's area of true expertise. p.s. also, it seems that your friend might be confusing areosol with droplets. Droplets are projected from the mouth and nose, hence the value of a face covering. Aerosol is what the best masks are designed to prevent. I think that you can argue about aerosol, but not about droplets. Your friend sounds like someone who wants to be someone smart, but is giving you bad information as a result. And now you are spreading tit. Finally, if your friend has any influence at the CDC why are they publishing "incorrect" guidelines? Why does his opinion have no value at the place that he works? . "Works at the CDC" could mean almost anything. Don't be part of the misinformation problem.

Oops, I didn't read the full message. Things have slowed down, forever. Datsuns Northwest has closed their doors. Not looking good for car clubs. Maybe the Seattle area. But it looks like somebody will be organizing the occasional cruise or meet. So, keep the site in mind. Probably these guys, Datsuns Northwest. I never joined but the Canby show was/is always a big deal. Things have slowed down a bit since I got in to the game but that doesn't mean they'll stay slow. Worth a look. http://datsunsnw.org/

If you swap them the bleed screws will go to the top. If they're on the bottom that's your problem. It's a common problem.

Check the bleed screws. Pretty common for people to install the calipers with them on the bottom where they're easy to reach. But they need to be at the top where the bubbles are. The calipers can be swapped.

Eagles and foxes

Makes sense. Nissan used the N47 head on the N42 block until they changed to the F54 block in about mid-1980. Nissan did do some odd things with the cam lubrication though in 1977. They switched from the spray bars to the internally oiled cam. Make sure that those parts are right. Carry on.

A house divided. Competing with, probably, Jared Kushner, Or Jared is actually the drug dealer making the deal, controlling the market. Get your own PPE! https://www.nejm.org/doi/full/10.1056/NEJMc2010025

Only the engine block can be matched to the chassis and that is only up to 1976 (maybe 1977), Nissan put the engine block serial number on the ID plate by the brake master cylinder. Either the N42 or N47 head will work exactly the same on the N42 engine block. But the exhaust manifold for an N47 head does not work well with an N42 head. So that's really what you need to match, the exhaust manifold. If you have an N42 head with a square port exhaust manifold it will bolt right on to the block and work fine. Your mechanic should know this. p.s. 1977 was the year that Nissan changed from the N42 head to the N47 head. So you could have either. Your mechanic might be looking at some sort of database and using 1977 as a guide. But the N42 head is found on 77's also. Just rebuild that N42 head and use it.

It's just math, time and understanding. New is easy. I screwed up in my first post because the rotor is separate from the hub. I was thinking of other cars where they combine the two.

Thanks HS30. Looks like one of those companies that split off a division or two. It's what big companies do. It's hard to tell who's who sometimes. Surprising that it broke, but who knows what abuse it might have seen. http://eac.exedy.com/eac/company/history/ https://www.exedyusa.com/company/

He asked if they were still good. They probably are. So, not really a dumb question. There are still a few NAPA stores and small shops around that have a guy that knows how to run the rotor turning machine. The way they do it allows you to keep the bearing races in. (Edit - since the rotor is separate bearings don't come into play, my mistake). Why waste money if you don't have to? Take 'em off, drop 'em off, pick them up in a couple of hours, bolt 'em right back on. It's old school. And, who knows what "new" means these days?

10 initial + 18 vacuum + 20 centripetal = 48. 34 is just initial + centripetal. High PRM cruise could get both vacuum and centripetal max'ed out maybe. What's also interesting is that the PCM/ECM/computer "learns" and holds on to variable to optimize certain things. The O2 sensor feedback probably comes in to play along with EGR. Anyway, finding 50 degrees on a Hyundai is one of those things you probably would never know without the scanner. My point. Once you see it then you can try to figure out why the automotive engineers made it happen.