HS30-H

Two different publications, both factory Competition Preparation manuals for models that are not S30-series Zs.

None of the MK63 calipers are "Z-specific". They were specified as Sports & Race Option many Nissan models of the late 60s through late 70s period, and in both vented and solid rotor variants. The '20S' suffix corresponds with the width of the vented rotor used on the (wide) vented rotor type caliper. From Nissan factory documentation:

At least three, if you count the 432-R. The show lasted just over two weeks, and most of the major exhibitors moved cars around/switched their displays a little whilst it was taking place. With over 1.5 million visitors, they probably wanted to maximise the viewing opportunities. Nissan's circular rotating display stand and the 'Grand Prix' wall certainly saw some car switching during the event. That's a great blog with some really nice photos. Thanks! This might well be the same car, visible behind the Sunny in one of the other display sections:

But are you going to add some factory-style doublers to the underside of the mounting holes? It seems like a no-brainer to me. The footrest - in use - exerts quite a lot of leverage force on the floorpan. The factory doublers - with their turned-up edges - beef up the mounting points considerably. I think they are worth the effort of replication.

Most of it has already been covered on this forum over the years. The Japanese market S130-series model designations list in post #18 of this thread was originally posted some years ago on classiczcars when the same type of question arose, so the information is 'out there' already. If there is a 'problem' it is - in my opinion - more of a lack of imagination than anything else. Look at the comments on that Bring-a-Trailer S130-series Fairlady 280Z auction. For some people the idea that a '280Z' isn't just *one* thing appears to be akin to witchcraft. People appear to know that these cars were all made in Japan, but have little to no awareness what that meant for the Japanese market itself.

No, again, Japanese market had its own ideas. 'G' prefix in the S130-series denoted '2/2' ('2 by 2') model and appropriate emblems, just as it did in the S30-series. The '2 by 2' name was used extensively by Nissan in its sales and advertising for the cars. No '2+2' / 'Two plus Two' in the Japanese market. Export markets only. Factory sales brochure. These are for the S30-series, but S130-series followed suit:

This is correct. No 'X' on Japanese market S130 models: *FAIRLADY Z ( S130S ) - L20E engine *FAIRLADY Z-L ( S130 ) - L20E engine *FAIRLADY Z-T ( S130J ) - L20E engine *FAIRLADY Z 2 by 2 ( GS130S ) - L20E engine *FAIRLADY Z-L 2 by 2 ( GS130 ) - L20E engine *FAIRLADY Z-T 2 by 2 ( GS130J ) - L20E engine *FAIRLADY 280Z-L ( HS130 ) - L28E engine *FAIRLADY 280Z-T ( HS130J - BC ) - L28E engine *FAIRLADY 280Z-L 2 by 2 ( HGS130 ) - L28E engine *FAIRLADY 280Z-T 2 by 2 ( HGS130J - BC ) - L28E engine

You could get a reasonable improvement by simply changing your camshaft, but - in my opinion - the simplest one-hit modification with the best butt-dyno results on one of these cars is a differential ratio change... What market model is your car, and what differential ratio does it have?

The Ozdat calculator is mistaken on the length of 1969 through 1975-ish standard L20A (6-cyl) rods. They are 133mm centre to centre. L20B (4-cyl) rods are much longer, at 145.9mm centre to centre.

I think you might be getting the L20A (6-cyl) mixed up with the L20B (4-cyl). L20A rods are 133mm centre to centre. Same as late L24 and late L16.

It may not help you if the factory tar board/sound deadener is no longer present on your floor panels, but I noted on my 4/70 HLS30U that it had gaps which corresponded with the factory footrest mount positions. No factory footrest or doubler mounts underneath, but the tar board has the corresponding gaps should they have been required:

With the caveat that - of course - you'll need to transpose for LHD.

This car is not 'HLS30-00059' in any practical sense. It is simply the identity of 'HLS30-00059' pinned onto a much later bodyshell. The description says that the body was 'replaced' ("...the original bodywork was in a lamentable state and had to be replaced...") but that is not possible on these cars as each bodyshell has its own unique identity - assigned to it by the factory - and it is non-transferable. The description tries to side-step this ("...very few “original” parts remain, and a substantial part of the bodywork is comprised of 1972 and 1973 parts...") but the bodyshell of this car is that of a complete post-1973 car, from which the original identity - in the form of the firewall-engraved chassis prefix and body serial number - has been removed, and replaced with that of another car. To all intents and purposes, 'HLS30-00059' no longer exists.

Just putting my head around the door to tip my hat at the big 51.

Have you only just noticed? Meanwhile, the S30-series Z was conceived, designed, engineered and produced from 1969 with countless details which tell us that it was not "designed" solely for the USA market. That's the key word. Solely... It makes complete sense for Nissan to have included the holes for the impact bumpers in the (new!) press tooling for the rear panel, and for them to use that rear panel pressing across all market variants. They did the same thing from the beginning of production in many ares of the car. Do you look at the radiator support panel on your '69 car and go through the same thought process? If not, why not?

Yes, factory parts manuals state that the ('4-screw') HJG46W-3A carbs were used up to the end of 08-71, and the '3-screw' type was fitted from 09-71 up. No doubt some people will be satisfied with the HVA award somehow proving that the car was 'preserved' enough in the opinion of judges, but I'd say a much more likely scenario is that they didn't really know enough to make an accurate judgment. The carbs currently fitted to the car are at least a year later than its 08-70 build date.

Yes. That was quick! Well spotted on the carb front Captain Obvious. Let's see what the seller says. The more you look at the car, the more you see. Which would be fine - most of these cars have 'had a life' and we all have to be pragmatic with this and that - but it clashes with being talked-up as a "250k+++" car. From what I've seen, very few BaT posts by 'Lstepp4re' seem to be all that constructive. He got it wrong - again - about side stripe kits (he said "aftermarket only") and nobody picked up on it. How is he credited as being any kind of guru?

I'll ask. Lets see if the question gets past admin there, and what the reaction is if it does.

I went back to remind myself of what this character actually said. He bumped the bidding from 15k to 100k in one shot, then dropped this comment: Despite Chrystal's words, I feel that people *should* question such antics. If this MRM character doesn't go on to bid "250k+++" then what is the true nature and purpose of his participation? On the face of it, this looks like a classic example of market pumping. Of course these sorts of shananigans go on in all kinds of fields, most obviously in the art market. Public auctions are a strange circus at the best of times, but the Bring-A-Trailer format has that extra ingredient of allowing comments (well, not all comments...) and where early S30-series Zs are concerned there seems to be a relatively small cast of characters sitting in the front row:

It appears that many comments are vetted by admin and weeded out before publication, whilst certain 'known' characters get free reign and treat BaT like it is their own personal club. Some of the loudest voices on there clearly don't know their stuff. This 'MRM' character bumped up the bidding by 85k in one bid, then passed comment on it being a '200k car'. Is it only me that finds this kind of behaviour totally lacking in credibility? This is not the technique of a smart buyer, nor the action of an informed marque enthusiast. Apparently this same guy owns the 432 that just won an award at ZCON 2020, so it figures that he doesn't actually know what he's looking at. Seems like the ZCON judges don't either. These are all symptoms of a bubble that is inflating too quickly.

Glad to help. But you are still under suspicion as a potential enemy collaborator.

Unless you've signed up to the 'Made For The USA' club, I didn't mean you in particular.

I think its interesting that some of the people who are evangelical about the similarities between Nissan's L-Gata engine range and the Mercedes M180 OHC engines and descendants are the very same people who want to deny that the L16 and L24 were direct descendants of Nissan's L20 six of 1964/65. We also get all the 'Made For The USA' stuff when the Mercedes engines had inlet and exhaust on the opposite side to the L-Gata. Funny old world, isn't it?

Great post, and I think an excellent illustration of the fact that the authorship (and Intellectual Property) of the wheels in question is firmly in the hands of M-Speed Japan, as they are THEIR interpretation of the original Kobe Seiko styling.