Zed Head

Found an old thread... https://www.classiczcars.com/forums/topic/68671-timing-chain-tensioner-extended-too-much/page/3/

You can measure the head and install the shims without removing the head. It's hard to find the standard thickness though, I see a wide range of numbers reported out there. I'd thought that it was 108 mm, but not sure. Regardless, if the head's been shaved the chain will be looser if the cam towers haven't been shimmed. It's just a fact of machining.

The sprocket position (1, 2 or 3) won't affect chain tightness. It only affects cam timing. Did he have the head resurfaced after the damage? If so, did he use shims to raise the cam towers? If not, that could be the problem. https://zcardepot.com/products/copy-of-cylinder-head-cam-tower-shim-set-240z-260z-280z https://www.google.com/search?q=datsun+head+saver+shims

But, on the topic of parts, here's one that's close to that. Seems like it could be saved though. Could be a good starter Z. Cleveland, OH. Somehting funny. Whenever I cut and paste something from BAT, I get logged out. I wonder if it's an AI scraping prevention thing. https://bringatrailer.com/listing/1977-datsun-280z-151/

It says turbo in the description also. The front end looks light though. I'd guess it's been harvested. But the hood might have value itself.

How does the tensioner look if you turn the crankshaft by hand and tighten up the tight side? That pushes all of the slack to the tensioner side. You could do the same by turning the camshaft sprocket backward. Tighten up the tight side like it would be on a running engine and see how loose things are.

Might be a turbo engine in there... Probably not. Portland, OR. https://row52.com/Vehicle/Index/JN1CZ04S5DX758897

The second one looks right. It's just power supply to the EFI system. Injectors and computer. Didn't realize that they used two big white wires from the fusible link to the positive terminal. I had a 78 parts car but didn't remember that. If the two green ones are there then I'd just fix that twisted tape setup.

Thanks @siteunseen 1978 is an odd year, they added another link. Two green links, side-by-side, with plastic connectors on the ends. Looks like they can't be had anymore, at least from the usual sources. Not sure what a PO did to yours, it looks like the correct links might be below that mess you're holding. Those two white wires look like they'd allow too much current if there was a short. I'd fix that. Here's the one wire setup for before 78. https://www.carpartsmanual.com/datsun/Z-1969-1978/electrical/wiring/engine-room-(from-aug-76)/45 https://www.google.com/search?q=24022-U8700

Green (yellow) might be the best color. $42,000. Not bad. And it's only a remediation. https://bringatrailer.com/listing/1972-datsun-240z-409/

Going in to CO mode here - I think that you meant lock nuts. Jam nuts are those thin ones that you use in conjunction with a regular nut. They get jammed together. A jam nut is a lock nut but a lock nut might not be a jam nut. Found a decent web site with both - https://knappfast.com/fastener-knowledge/types-of-locknuts/

I think that if you remove the inside plastic panel you'll see where the wires go. The whole thing, not just the access holes for the bulb sockets. Looks like there's a junction to a single wire then to the ground point. Has to be close.

Pick, pick, pick! Man! 👺 Do you mean the hole should have the little screw in it? Like the "half-shafts"? There is supposed to be a hole, it just has the wrong thing sticking out of it? They look great! Especially without the saw marks. Like factree.

cold italian pizza

Is the engine fully warmed up before taking off for the drive? The auxiliary air valve holds idle speed up until the engine warms up completely . Sounds like he's taking off with the engine cold and the basic idle setting is too low. Turn the big screw on the throttle body to raise idle speed. You can do it by hand. And the thing with the game piece on it is what keeps the throttle from slamming shut. If that's been deleted that might cause a problem. It's not a vacuum nipple, it just looks like one.

The picture you showed seems to be a flasher for the turn signals. There are some good diagrams in the Downloads area that might help you. I don't think that the flashers have polarity, the current just passes through and gets turned off and back on as the bimetal strip heats and cools. Here's one by EuroDat for the 71 240Z, and the general Downloads area link for more possibilities, like the Owners Manual. Find the flasher and see if the wire colors match. Good luck. Car looks very nice, is your grandfather still around to see it? Mine is long gone but I still have good memories. Learned that the sight glass on the AC line on his truck was not meant to be pushed. SSSSssstt.... https://www.classiczcars.com/files/file/79-wiringdiagramdatsun240z-1971-early/ https://www.classiczcars.com/files/

If you put your info in your signature people won't have to ask. Don't forget to save. https://www.classiczcars.com/settings/signature/ So, what are you working on?

280Z's with catalytic converters have a Floor Temp lamp. It lights when the converter gets too hot. Does your 75 have a lamp that says Catalyst? Haven't heard of that. The Hazard switch is known to have problems. You might search the site for past posts about it. Cleaning the internal contacts might be needed.

Classic Z-car question or classic maintenance question?

I'd measure battery voltage first. Not clear what you're starting with, maybe the battery has just run down. Also/or, is this with engine off or engine running?

Besides the length, won't you get dinged at the car show for hack saw marks? I like a smooth nut and bolt engagement and those marks make me squeamish. I can almost feel the rough edges through my eyes. CO has a future as a car show judge, I think.

Might be able to get factree. Looks like there was a change along the way. #25? https://www.carpartsmanual.com/datsun/Z-1969-1978/axle/front-suspension https://www.nissanpartsoverstock.com/p/Nissan__/Bolt-Hex-M10X125/89441985/08124-04510.html

My father refused to get with the CD craze for quite a while because the digital format didn't capture all of the sound, like vinyl or tape. It was a topic back then for the audiophiles. He gave in eventually.

I think that it will fit the car. There's room for a rearward-placed sump. But you'll need the pickup assembly from a 280ZX engine to fit the sump. Here's a good picture, from that 355 mile 280Z. Picture 358. https://bringatrailer.com/listing/1976-datsun-280z-39/

Knock knock...