Zed Head

Makes more sense. Still not terrible. A fender is $106. I hope somebody tries to buy some parts so we can see how it works, and the quality.

Remy makes new. I have one on my main vehicle, a Ford. Been fine. I'd still check your damper. Hard to see why the loose alternator pulley/shaft would start vibrating on its own. Seems like something is setting it off. Good luck. Looks like WAI Global is the only new option though. I think that they make their parts at a variety of places. Surprisingly hard to figure out where. Looks like China is involved, of course. https://en.abrams.wiki/Wai-Global-Div-Of-Wetherill-AssociatesInc/3--ddg-f2fixlRbpNOdw1wjQ https://en.abrams.wiki/tools/companytransparency/dashboard/3--ddg-f2fixlRbpNOdw1wjQ/suppliers https://www.rockauto.com/en/catalog/nissan,1978,280z,2.8l+l6,1209260,electrical,alternator+/+generator,2412

https://www.junchengauto.com/store/search/sycx-datsun_240z-catid-1.html Looks like the yen symbol, even though it's from China. Maybe because it's a Japanese car. Seems very cheap. Shipping and handling are probably high. Plus the tariff. Probably have to buy a lot of 100. https://www.xe.com/en-us/currencyconverter/convert/?Amount=432&From=JPY&To=USD $2.71 !!! https://www.classiczcars.com/forums/topic/69971-zs-from-china/#comments

I wonder if you could see the culprit vibrating when it happens. If it's repeatable it might be worthwhile to work the throttle by hand and watch. Probably scary though.

I just saw a video about made-in-China Muncie M22 transmissions (old car hot rod 4 speeds). The guy gave a good explanation about how parts are shipped to the US in bulk, then shipped out from the warehouses. The unit was a combination of decent parts and not-quite-right parts.

They have other web pages and a Facebook page. Seems disjointed. They show the complete body as a possible purchase. You could probably ask for other parts like floor pans or transmission tunnels. https://www.carbody.com/product/classic-car/nissan-parts-1/240z-parts/ https://www.carbody.com/product/240z-parts/replacement-complete-car-body-assembly-19691973-for-nissan-datsun-240z.html https://www.facebook.com/JunchengVehicle/videos/jdm-fj40-datsun-240z-ae86-car-body-shell-is-ready-in-factory-fj40-nissangtr-ae86/1977505903102757/

Suspect maybe, but no clear cause. Not clear how all of the noise in the first video would be caused by that. Also never really answered the question about "engine off" noise. Why would the alternator keep spinning if the engine was not? Just trying to make sense of the words you wrote. Making progress though. "...persists after killing engine..."

I see now. Different eyes get drawn to different things.

Watched more of the video. At the end he talks about one of the fake Broncos selling for $400,000. At 37:00 in the video. Kind of looks like they're trying to create artificial value perception. Apparently they sent a body to a builder, who finished it. The company itself probably bought the car or paid someone to buy it. I'm a cynic. Weird stuff. Let's see if the 73/78 2X0Z body ends up out there.

Might be that they're just building model car bodies to showcase their parts catalog. Might be mentioned in the video, didn't watch the whole thing. I don't see all of the parts on their page though. https://www.junchengauto.com/store/search/sycx-datsun_240z-catid-1.html

I'm not grokking what you mean by one angle and two angles, I see numerous angles everywhere, but it does look like they copied the later 240Z body. Then put a 77/78 280Z hood on it. I wonder who is directing their efforts. The video has only been up 13 hours and already has 3,254 comments and 594,010 views. This is one case where AI might come in handy to summarize the comments.

I think that there are three rear tower styles - 240Z; big body 74 260Z, 75 and 76 280Z; and modifed rear deck 77 and 78 280Z.

Feelin' okay.

Fan or fan clutch maybe. You probably removed it for the radiator. The fan blades could cause some serious vibrations. Check the bolts. The no-belt test should be telling.

Look in the Resources section of the site.

Are you saying it's a 240Z tower? AKA small body? I looked around for resto 240Z pictures and found a few. I couldn't find any 280Z pictures. The China body doesn't look like this 240Z, below. Three holes in the brace and it doesn't reach the top of the tower. It's an abomination! Not an expert. https://www.classiczcars.com/forums/topic/55998-picture-thread-early-vin-cars/#comment-501358 And first page of dspillman's resto thread. https://www.classiczcars.com/forums/topic/68900-finally-found-a-69-240z-51-time-to-finish-a-30-year-multiple-owner-restoration/#comments

Are those not 280Z tall strut towers? Full size spare tire well. Vented hood. It seems to be some sort of hybrid Z.

But, it looks like their replication process has some flaws. Or the narrator misheard 1978 280Z as 240Z. Wonder what the rear strut towers look like. Found it.

This company has come up before. Stumbled a cross a video about it. $9,500 for a "new" 240Z body. About 0:50 in. https://youtu.be/cBBZrjwqWZc?si=hYSPDBMdPgUH3oPH

Another high mass item is the crankshaft damper. The belt-off test will tell something.

Just watched the video. Not sure that Yarb did (no offense intended), that noise is terrible. Seems like whatever it is must have some mass, to keep spinning after the engine is shut off (from your title). Can't tell if the engine is spinning though in the video, although it seems to be shaking. Also don't know if you have your foot depressing the clutch pedal or not. It might be the input shaft to the transmission spinning transmission parts. Try the test with no belts and your foot depressing the clutch pedal, with the transmission in gear. That will stop any of the transmission parts from spinning.

Courtesy Nissan down in Texas used to have one. Everybody used to use them to buy Z parts. But they revamped the web site and that part of it disappeared. The guys that put it together originally said they were going to bring the catalog back but it never happened. I'd guess that "corporate" didn't support them. It's just another bland dealership web site now. https://www.courtesynissan.com/parts/

Pot, kettle, both black.

Still curious about origin. As I understand things the aluminum drums are discontinued from Nissan. So, it would have to be either NOS or an aftermarket reproduction. I don't see any casting ID marks like those on the originals so I assume they're aftermarket. Not saying that they're bad, just curious. I wonder where things come from. Who made them? Probably no way to find out. https://datsunparts.com/products/datsun-z-car-70-71-72-73-74-75-76-77-78-240z-260z-280z-510-rear-aluminum-finned-brake-drum-sold-as-pair-only-prepay-intro-offer-march-2025?_pos=4&_sid=0010228b6&_ss=r NOTE: The company that makes these is the same company that makes rotor hats for the McLaren 12 "Dean, I got the new drums on Saturday and put them on the race car yesterday. They look to be a really nice product. Thanks." David W. Plott 1973 240Z ITS Class SCCA Mount Juliet, TN This was on the drum search page but not the final page of the specific drum. Looks like an "off-shore" copy. I don't know how a new drum could be "engineered" in the US. Anyway, just keeping track of things going on. You'll be fine! Good luck. https://datsunparts.com/search?q=drums&search= Datsun Z Car 70-78 240Z-260Z-280Z, 510 Rear Aluminum Finned Brake Drum 6.5 lbs each drum as opposed to 12 lb each for cast iron versions. 43206-E4100 original Nissan number PRICE IS FOR A PAIR AFTERMARKET US ENGINEERED Correct and proper...

Where will you be tested and do you know the extent of the test? I used to test in Oregon and they only did two things - checked for a catalytic converter and measured idle emissions. Some areas do complete visual inspections, and test idle and 2500 RPM under-load emissions.