Namerow

The reference points used to generate that 913mm measurement are tricky to replicate in practice. If you look closely at the small sectional drawing of the front shock tower, you'll see that the 'A' point actually lies on the plane defined by the underside of the shock tower cap. You can't measure at this plane unless you remove both front struts and then use either a trammel bar or a plumb laser. So, instead, you have to measure across the tops of the shock tower caps. But... Not so apparent from the sectional drawing, but very clear to the naked eye, is that the shock tower cap has a lip on the top (this is a little more evident in the sectional drawing of the rear shock tower that appears on the right side of FSM Dwg. BF-3). The top of this lip sits (by my measurement) 13mm above the bottom (reference) surface of the cap. So when you take the 13.5-degree cant of the front strut into account, it means that if you measure the A-A distance at the top of the lip, the result it will be somewhat less than if you were measuring at the (intended) bottom surface of the cap. My calculator says that 'somewhat less' = 7mm, so a measurement of A-A taken across the top of the lips should be 906mm. Now, if you left the press-in black plastic trim buttons in place (did you?) and took your measurement across the top of the buttons, you'll be measuring at a plane that's even higher above bottom (reference) surface of the shock tower cap. 906mm will shrink to ~ 902mm (est). Also: It's difficult to make this measurement accurately with a steel rule or (worse still) a tape measure. The correct way is to use a trammel bar*. If you used a steel rule or tape measure, your measurement accuracy will be no better than plus/minus 1mm (and more likely only plus/minus 2mm). * You can make your own single-purpose trammel bar. Start with a 4-ft (1219mm) length of 1" x 2" lumber and two 6-inch lengths of straightened 0.032" wire. Drill a slightly undersized hole into the flat side of each end of the wood strip (drill all the way through) and then press the wire lengths into the holes. The holes should be about 900mm apart. Now, using 1-qt paint cans sitting on each front fender, support the wood strip (your 'trammel bar') above and across the shock towers. Adjust the projecting length of the wires as required. Then line up the tip of the LHS wire with the centre of the LHS shock tower trim button. Then -- taking care not to disturb the trammel bar -- bend the RHS wire until its tip aligns with the centre of the RHS shock tower trim button (you may need to go back and forth a bit, until you're satisfied that both wire tips are correctly aligned with the centres of the trim buttons). To get your final measurement, transfer the paint cans and the trammel bar to your shop bench (don't disturb the wires!). Then position a steel rule on the bench top so that it sits under the wire pointers and take your measurement.

Is it possible that you've misinterpreted the reference point for the 465mm measurement that appears in FSM drawing? The way I read the drawing, that 465mm measurement defines the distance from the so-called 'C-point' to the centreline of the moustache bar's chassis mount bushings (if you look really closely, you'll see the moustache bar's circular end loops defined just to the rear and inboard of the rear shock tower chassis mounts). Let's call this location on the vehicle the 'E-point'. The 'D-point' refers to the centreline of the top of the rear struts . But, according to the FSM drawing the centreline of the top of the struts lies directly above the centreline of the 'gearcase mounting rear crossmember' (which is a more useful reference point when taking measurements off the vehicle). The D-point sits 450mm aft of the C-point The E-point sits 15mm aft of the D-point (so 465mm aft of the C-point). The photo below (source?) provides a good visual reference for what all this looks like on the underside of a bare Z structure. As far as I can see (I could be wrong), the FSM drawing makes no attempt to provide dimensions for the location of the rear lower control arm and its mounting points. You'd need to construct your own layout drawing for the diff, moustache bar, and rear suspension in order to specify (in mm) the locations of the rear lower control arm and its mounting points relative to the C-point.

Great to have you back on board, Phil. Your how-to articles, posted both here and on the Atlantic Z site, have remained an important resource for all of us Z owners.

You did a great job, with both the car and the build thread. Thanks for the update. We now have closure! 😄

@Parman This thread ended abruptly on May 25th. What's the current status of your project?

I've had one of those in my toolbox for years and, yes, it does work. However, if the base of the nut is flush with face of the part it secures, the chisel point will tend to climb up the side of the nut when you start applying torque to the drive bolt. That means that part of the upper part of the nut gets split first, while the lower part hasn't quite separated. If you're lucky the nut will pop, even though it hasn't been completely split. Remember that you'll need adequate clearance in all directions to make the splitter fit, as well as enough room to get a wrench or socket on the drive bolt. That makes the splitter useless for recessed or restricted-access nuts. For example, it'll work great on the top nut on the front anti-roll bar link, but it won't work for the nuts used in some locations to secure the intake/exhaust manifold.

Just make sure that the block-off strategy (whatever it might be) used at the Y-connection on the other side of the engine is sound and secure. For example...

Nice enough car. Disappointing price.

Fun to see how the person who did the floor 'repairs' neglected to remove the original set of rubber floor mats before getting busy with the welder ('Hey! What's that smell?') The photo of the dog leg area, taken from the rear wheel housing looking forward, is a sad comment on the lack of effectiveness of the Ziebart rustproofing in this critical area. The seller's photo essay is missing any pictures of the front frame rails. I suspect that this Z is going to need a lot more than just installing a replacement dash!

If this was a Ferrari or Maserati, a VIN 'typo' like that would either add hundreds of thousands of dollars to the vehicle's value or (more likely) add the same amount of dollars to the coffers of the lawyers and auctioneers adjudicating in its re-sale value.😄

This topic has already been pretty thoroughly discussed by CZCC members. Here's a good place to start...

Quite right. I was looking at the wrong column.

I was able to buy an OE molded hose at a local swap meet, so -- even though I bought a length of 9mm (ID) braided hose from Bel-Metric for the purpose -- I never got around to trying out the idea. No reason why it shouldn't work, although you might not be able to make the straight braided hose flex quite enough to match the radius of the bends molded into the OE hose. Unless you're trying to build a concours winner, though, I doubt whether anyone would notice. CORRECTION: I just went down to the workshop and pulled out the hose that I bought from Bel-Metric. It's quite flexible and can be easily bent to match the curves of the molded OE hose... and without any signs of the walls collapsing. It also fits nicely over the nipple of the check valve (the one that fits between the engine-side and mastervac-side hoses). The actual ID of the Bel-Metric hose is 9.4mm, so the best size of copper tubing to use as an insert would be 5/16" OD (7.9mm). 3/8" (9.5mm) tube would be too big and I don't think you'll be able to find 11/32" (8.7mm). In any case, the quality of the fit doesn't matter much because there's no fluid flow happening here. It's just a vacuum hose. The only thing that would cause a problem would be if the hose walls collapsed or got pinched off. It's worth pointing out that the range of aftermarket replacement parts for Series 1 Z's has expanded quite a bit since 2019. Many items that used to be unobtanium (such as this engine-side MasterVac hose) are now quite readily available. The hose in question lists at ~ $80.00 (originality doesn't come cheap). For reference, a 3-ft length of 9mm braided hose from Bel-Metric costs about $15. Add anywhere from $0 to $10 for the copper tubing.

I worked with the show host, Tom Cotter, on a number of media events staged by a European manufacturer back in the late 1990's. Nice guy. Very knowledgeable, very enthusiastic, and seemed to know just about everyone in the business. Odd, in hindsight, that I don't remember us ever talking about Datsun and the Z (I had two at the time).

The stamped-metal spring cap, in its OE form, was actually manufactured as an two-part assembly' ('Assembly - Bumper Bound'), consisting of the metal part, along with a molded-rubber 'snubber' (some call it a bump stop) bonded to its underside. When new, the snubber piece started off feeling and acting like rubber. Unfortunately, the material didn't age well, becoming hard and crumbly over time (kind of like the consistency of a dried-out hot-dog bun). I'm pretty sure that the stuff shown in your photo is the remains of the snubber. These days, those snubbers are usually replaced with versions made out of polyurethane.

Great-looking car, picture-postcard weather, beautiful country. Thanks for posting.

Car looks fabulous, Charles. For those of us who remember your paint disaster, this has to be very rewarding. Re the problem seal, here's a photo from an unmolested early 71 Z (VIN 019769) that came up for sale on BAT a few years ago. Hope it helps...

Nice work, Captain Obvious. Thanks for your persistence in moving this forward. A few questions and comments specific to the Combination Switch: I see the Horn Relay, but I don't see the Horn Switch (talking about the 'switch' that operates when the driver pushes on the horn pad) Letters appear in some of the rows in Column 2 of the 'grid' for the Combination Switch (the letters are: A, B, D, E, F, M and P). Can you refresh my memory as to what they stand for? As currently depicted, the Wipers show only 'OFF' and 'ON' modes, with the logic within the 'ON' mode apparently trying to do double-duty for both 'HI' and 'LO'. I think that the switch's operation might be more clear if 'ON' is replaced with discrete 'HI' and 'LO' modes. See attached schematic, per my original post in this thread back in July 2024. As I also pointed out back in 2024, it's worth keeping in mind that the colours of the wires coming off the Combo Switch don't always match the colours of the wires to which they connect on the Vehicle harness. See below (bold-face letters are Vehicle-side, regular-face letters are Switch-side)...

I visited the Toyota Museum a couple of years ago and highly recommend it to anyone visiting Japan. DC871F's photos here only scratch the surface of a really great collection, displayed in an attractive and thoughtfully organized way. Nice restaurant on site. Also, a huge display of model cars. Over the past fifty years, I've been able to visit most of the world's premiere automotive museums and this one ranks in my Top 5. As a bonus, you can even use the local magnetic levitation ('maglev') train service to connect with the main JR rail station in nearby Nagoya. The museum is an easy day-trip from Kyoto or Osaka. The connections will allow you four or five hours of time at the museum. BTW, the 240Z on display is so authentic that it even has a suitably-cracked dash pad!

Thread highjacked. Start a new topic if you want to talk about hub stands.

I've often seen pictures posted by CZCC members where their Z is perched up on axle stands, front and rear. Getting a car up on stands at either the front or the rear is easy. I'm curious to know what the accepted wisdom is for getting the other end elevated and then getting the stands extended to full lift. Can it be done safely in one step, or is it better to start with the axle stands at minimum extension and then go back and forth in steps from front to rear until both ends are up all the way (i.e. the axle stands at maximum extension)?

That would be a great addition. @Mike Within the 'Knowledge' tab, there seems to be no appropriate 'category' for Inline6's list. Perhaps we could benefit from an additional category called 'Hardware'. It could hold contributions dealing with fasteners, hoses, materials, finishes, chemicals, and the like. Maybe even an additional one, titled 'Tools'. Years ago, two other Z owners created similar 'S30 Fasteners' spreadsheets. However, neither was even close to yours in terms of whole-vehicle coverage. Both of the authors ran out of steam after listing about 20 items. One of them actually included photos of some of the more important items. Easy to see why he tired of the project fairly quickly!

The wiring pigtail for my 70 Z's antenna also consisted of just 2 power wires (i.e. no ground wire).

I think that the 'ground wire' consists of the braided wire shown in this photo of the disassembled antenna assembly from my 1970 Z . The larger, toothed washer gets clamped between the assembly casing and the inside of the fender, while (IIRC) the smaller, smooth washer slips over the antenna mast. The purpose is to ground the mast...

@inline6 What do you mean by 'workbook'? And what do you mean by 'resources section of this website'? (I can't find anything tabbed as 'Resources') p.s. Thanks for the link to the spreadsheet. That's the most comprehensive and detailed list of S30 fasteners that I've seen so far. All that's missing are the part numbers (although adding those would be a huge task). If possible, it would be a great addition to the 'Knowledge Base' section of the CZCC website. Do you know the identity of the author?