Zed Head

Glad to help, and good luck. Hybridz is not very actively moderated. Not sure how fast they move or what the rules are for messaging. I can drop the guy a message and send him over here if you don't get through.

"Black Pearl"! https://bringatrailer.com/listing/1978-datsun-280z-162/

Just saw this on Hybridz. More expensive than a wrecking yard but cheaper than some places. Has the ratio, apparently. https://forums.hybridz.org/topic/133338-r200-370-open-and-z32-5-speed/#comment-1241777

There's a metal sleeve that the nut seats on. Threads showing is determined by the sleeve. https://www.carpartsmanual.com/datsun/Z-1969-1978/axle/front-suspension Part 23.

The bolt size problem is well-discussed on other forums. In principle, the clamping force of the bolts does not depend on the space around them, and the ring gear should never move on the carrier once clamped down. But people still use sleeves to take up the extra space. I can't remember which has which but it sounds like you're saying that your carrier has 12mm holes. By the words in the various discussions you should be able to use a ring gear with 10mm bolts. Put these words in to Google and a bunch of Hybridz threads will come up. You'll find links to sleeves/spacers if you want to go that route. The diff shop might have some opinions too, I'd guess. site:hybridz.org 10mm 12mm differential carrier

Search your local Craigslist and Facebook Marketplace. Probably have to buy a complete used diff. Maybe even a beat up parts car.

Is there a problem? On my engines, a 76 and a 78, 5 and 6 were always darker and 1 was always whiter. I don't think that air flow is well-balanced through the EFI engine intake manifold. They all get the same amount of fuel but diferent amounts of air.

Big picture wise, people can categorize the years and styles in any way they want. Some would argue that calling them Z's is offensive. Too informal! Insulting!

Does it have a miss now? You're on Page 4, hard to tell what the current state of the situation is.

The 92 mm number keeps popping up, on various forums from various people, over decades. Thanks for confirming, again, and adding the collar/sleeve/bearing measurement. Looks like 47 mm to the fork contact surface? Should be a good setup. You did the pilot bushing, right?

For what it's worth, the definition might be better phrased as "the first series" of cars, and 'the second series". What they are, not the labels that have become popular. And unpopular.

I'm not sure what you mean. I was just rephrasing Carl Beck's definition. It only uses the VIN as the identifier. He says that Nissan defined two specific ranges of VIN and that those ranges were used to define "Series". Nothing about features. Just VIN.

So, the people that are defining their "Series" by the parts on the vehicle are out of line, speaking nonsensically (no offense intended to anyone). What the "Series" designation really means is that the VIN is within a certain range. The parts (and the build date) don't define the Series, the VIN does. If somebody says that they have a Series 1, just ask for the VIN and you'll know.

HLS30-00000 - 00005 = Series 0. A small group, but still needs recognition.

The Tom Cruise Alpha 1 GTO sold. Pretty good money for a 1976 280Z! https://bringatrailer.com/listing/vanilla-sky-ferrari-250-gto-replica/

Weird, I looked on Facebook Arizona and did not find it. Facebook sucks, of course. https://www.facebook.com/marketplace/phoenix/search/?query=240z

You've been conditioned to expect problems. Reprogram!

Facebook? Craigslist?

You need the D to hold the shaft while you tighten the nut. Otherwise it will spin. Did you get four? Are they all that way?

No. I had KYB's and the shafts were D-shaped. Drop-in replacements. Maybe KYB is cost-cutting, or made a mistake, or maybe you got counterfeits.

I'd go with Pennzoil Synchromesh or Redline MT-90. They're both better than typical manual transmission fluid. Redline has been proven in many situations, solving grinding problems. Search on the forum and you'll find stories. If you use Driven you might be the first. https://drivenracingoil.com/i-30497794-go-80w-90-conventional-gl-4-gear-oil.html https://www.redlineoil.com/mt-90-75w90-gl-4-gear-oil https://www.pennzoil.com/en_us/products/other-oils-fluids-fuel/manual-transmission-fluids-axle-oils/synchromesh-manual-transmission-fluid.html

They all get 1/2 of their needs every three sparks.

But, just for fun, it also suggests that the monkey motion transmission was used up through 1976. Lots of confusion out there. https://www.carpartsmanual.com/datsun/Z-1969-1978/power-train/transmission-assembly

The parts schematic suggests that there are really only three possible sleeves, and four or five pressure plates. The Exedy with the long sleeve sounds like the right combo. https://www.carpartsmanual.com/datsun/Z-1969-1978/power-train/clutch

How do you know? The 240Z came with a Type B 4 speed after the Type A monkey motion unit. Feels like the table has turned... For what it's worth, more food for thought, the Type B 5 speed is identical in every way, externally and gears 1 - 4, to the Type B 4 speed. Nissan just added a 5th gear and some shift control mechanisms. The 1 - 4 ratios are identical. In 1978 you could order a 5 speed or a 4 speed. It would be a Type B transmission. Same dimensions. Pretty sure the clutches were identical. Just poiniting out that the labels in that figure don't really tell much.