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Guess I need to change my handle to jfa.15320! 😄

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.

Also saved part numbers for all three…

Sorry I started a Series I sh*tstorm. LOL. It's been erased from my vocabulary and won't happen again! I think for me, I'll just go with "early" 240Z and 240Z.

Added the positive terminal cutoff switch Edit- I had to bend it 90°, it was straight, and due to the offset, it would have put the fuse panel too high and hit the hood on closure. Started wiring on this wall, and sheathing/pegboard for the upper half. I've never used pegboard before, but it seems like a good idea for all the crap I have that was hanging off of nails for my old wall.

The Georgia Z Club held a Gumball Rally in North Georgia today. There was a pretty good showing, too. These are the basic rules: There will be directions that will NOT be straight forward. Those directions may or may not be correct. There will be clues to things to identify during the drive. There will be a prize for whomever provides the most correct answers to said clues. The tiebreaker will be the total distance of the route. (Note: if you take a wrong turn, deduct the mileage from the total.) A navigator is not mandatory but is highly recommended. Just because you see someone else coming from the opposite direction, it doesn't mean you are going the wrong way. They could be going the wrong way. If you see a sign that says "Welcome to Tennessee", you are lost. If you see a sign that says "Welcome to Florida", you are REALLY lost. The club will not send out search parties for those of you who are lost or REALLY lost. Speed doesn't win. Accuracy does.

Well, figured I would offer a conclusion to benefit anyone reading through this thread in the future. Yes, the exedy 06009 clutch kit appears to be correct for the longer collar. Stacked everything up as described in other threads and appears to be exactly 92mm. Sent from my iPhone using Tapatalk

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

By now, we all know Nissan never had a series I and II 240 Z in America. However, it is a description that works (in America) for determining if it is an early or late model 240. Just to stir the fire a bit more the description also works for 260s and 280s due to the mid-year changes, but only in America as far as I know.

We should not conflate the two distinctly different actions related to changing a specific Part within a Model, and changing the Model. Changing a part and/or associated Part Number within a currently produced Model can be done for many reasons. The part may have been improved but retains the same form, fit and function. The part supplier may have been changed. A newer part with the same form, fit and function can supersede an older part number on an older model to consolidate or replenish Service & Repair parts inventory None of these individual part changes, change the current Model. Manufactures change the Model, as they introduce the next year’s New and Improved Model. When Nissan changed their Model, they issued Technical Service Bulletins documenting what changes they made between the Old and the New model. With the introduction of new model, they issued Introductory Service Bulletins, New Technical Service Manuals in support of the new model and updated Technician Training Materials.

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.

280Z clutch and part number…..29 mm.

That makes this chart even more worthless. The Type B 4 speed in the chart shows 29 mm and is correct for the 280Z clutch……... 47 mm total. The 240Z collar is 10 mm shorter at 19 mm…… 37 mm total with throw out bearing. The throw out bearing is 18 mm. None of the collars in the chart have that 19 mm measurement for the 240Z clutch. Go figure!

Good job kcpope. I just remembered I have kept two collars with throw out bearings attached for future acknowledgement. One for 280Z and one for 240Z. I just went out and measured. The 280Z collar with throw out bearing is 47mm and the 240Z with throw out bearing is 37mm. This needs to be logged for future reference. The 2plus2 / turbo is in a league of its own. I didn’t keep one of those.

How about '...the people that are trying to define the parts on a vehicle by "Series" are out of line'..? That makes more sense, doesn't it? I'd say that - more to the point - the term 'Series' is rendered just about irrelevant if you know the 'VIN' (chassis number). Furthermore, if I give an example of a 'VIN' (a full chassis number consisting of a prefix and a body serial number for that prefix) would anyone be able to tell me what some of the major parts attached to that particular car will be? What transmission will it have? What diff ratio will it have? What steering rack ratio will it have? What carburettors will it have? Let's start with 'HLS30-159035'.

Yes, the collar is about 47mm from the TO bearing face to the fork contact shoulders on the collar. Yep, swapped out the pilot bushing using the bread trick. Couldn’t believe it worked but it worked like magic. Sent from my iPhone using Tapatalk

There is a delicious irony in the fact that those who say "series 1" "series 2" is a genuine way to refer to these cars, can't even agree on where 1 series begins and the other ends.... I think that speaks loads in itself. The reality is these cars changed often (sometimes on month by month intervals) and this is shown in the parts manuals. But also talking about series 1 or 2 ignores all the most exciting variants such as the Japanese market models.. eg: Fairlady Z, Fairlady 240z, Fairlady 240ZG, Fairlady Z432 and Fairlady Z432-R and where I live, far away in Australia many of the 'series 1' so called features continued well into late 71 (eg: the hand throttle). However it's a term that simply won't die.

I was suggesting that both methods, features and VIN, might both be effective as a way to recognize the early cars from the later cars. Provided the features changed at #21,001...

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.

That would be late January, 1971. The second series beginning with VIN HLS30 21001 started in February, 1971.

The last Series I 1971 240Z's were produced in Jan. 1971. The Series II 1971 Late Model 240Z's started production in Feb. 1971. VIN's starting at HLS30 21001. Nissan published New Model Introduction service bulletins that identified the 17 specific improvements in Customer Safety, Connivence and Performance items all offered on the second 1971 model offered for 1971.

According to Nissan - they identified every 240Z sent to North America with both a vehicle identification code and a chassis serial number. Further Nissan started a new series of chassis serial numbers for each new model and documented that in their Factory Service Bulletins. The first series of chassis serial numbers started at HLS30 00006 and HS30 00003 The second series of chassis serial numbers started at HLS30 21001 and HS30 00501.

Just for future reference, what is considered to be the cutoff date for the "Series I" vehicles?

Shop fixed the differential. The pinion bearings failed as suspected. Shop told me gears were unfortunately toast too (something about overheating, as well as too worn). So they put new bearings/seals/ring and pinion in and repainted the housing. Does anyone have a 3.7 or 3.9 differential they are willing to part with? Unfortunately, they couldn't find the correct gear set and installed the regular 3.545 ratio. They said if I find the proper set they would replace it for free though. I really would like the 3.7 or 3.9 ratio, as that was my bread and butter behind the differential. Please let me know, maybe a deal could be made.

With what? 'Series' - according to Nissan Motor Co. Ltd. Japan - is 'S30'. Anything else is just America talking to itself.

I beg to differ. Cause and Effect at play in this case. The Cause: Nissan sent two different models of the Datsun 240Z to North America and sold them both as 1971 Model Year vehicles in calendar year's 1970 and 1971. This was NOT normal practice in North America. The Effect: Series I / Series II is the direct effect of the consumer confusion caused by Nissan Motor Co. Ltd. “Which 1971 240Z Do You Have?” That was one of the first questions prospective buyers had to ask of the seller back in the mid 1970's, when they saw a "1971 Datsun 240Z" advertised for sale in classified Ad's. We still see people asking “is my 240Z a 70 or a 71?" today 50+ years later. If anything, the need for a term that would clearly identify which 1971 Datsun 240Z was being offered For Sale - was lessoned during the internet age. Because then seller could easily provide clear pictures with the Ad. and potential buyer would know which 1971 was being offered.

Having graduated from several Datsun service schools in the 70s when I was a dealer mechanic I can say with confidence that we students were instructed to refer to all Datsuns of that era by the production dates. This "series 1" etc. is the product of the internet age and not the Nissan Motor Co. Ltd.

Resurrected Classics