HS30-H

When that's a proven, commercially viable and commercially available "plug-n-play" product, give us a call back....

It's a factory stock Nissan S20 inlet manifold ( PGC10 / PS30 / PS30-SB / KPGC10 / KPGC110 ). It has coolant passages running through it with ports at either end to feed the heater, an integral casting for the thermostat, a vacuum take-off for the brake booster and a holder for the coolant temperature sender. The carburettors are the stock Mikuni N40PHH-A24s by the look of them.

I concur. 'BR' logo = Japanese brand 'Black Racing'. Mid-1980s period.

Nissan's ECGI was made by (HItachi-affiliated) Nissan subsidiary Diesel KiKi, and used Bosch-licensed electronics as their starting point. The throttle bodies themselves were manufactured by Denso. JECS was formed in 1973, uniting Diesel KiKi, Unisia, Nissan and Robert Bosch Japan with Hitachi as nominated parent company. Now back to our usual programming...

Be careful comparing the TC24 (especially the latest version) to anything. What you actually get for your money is a key point, and often misunderstood. Whilst I applaud your efforts, and I'm interested to see the results, I still feel a little non-plussed about it all. Like the 'Goerz-Paeco' (which never actually flew) and the OSG TC24-B1, your custom DOHC head is not going to be legal for any of the historic-based race classes and would likely be bumped up into a class where it will be outgunned. A slightly updated version of Nissan's FIA-homologated 'LY' crossflow or - far more practical - Nissan's FIA-homologated E4621 'Safari' head would be of interest all over the world (so perhaps a better business proposition?) and would be race legal in classes where they would count and would be competitive. Race legality / usefulness may not be an angle that you are concerned with, but if I had the resources it would be one of the first things I would think of from a commercial as well as practical point of view. I noticed the tip o' the hat to the S20 with the valve cover, so you must have at least some empathy with the historic side of all this - yes? Casting '3000' into it might not be such a good idea though. How about giving this thing a name instead? Ultimately it would be more real than using the 'NISSAN' branding, in my opinion. Lastly, I (fondly?!) remember HybridZ threads of the dim and distant past that scoffed at the usefulness of a 24valve DOHC crossflow layout in comparison to the stock L-gata's 12valve non-crossflow layout. Looks like the zeitgeist is a little different these days...? Good luck!

A big PLUS ONE for that sentiment. The engine belongs in the car that it has most history with. Help put the jigsaw puzzle back together again. It's good karma....

Put it this way, it was made by the same people who made the ones that Nishi san at Revive Jalopy used to stock... Legend has it that these under guards used to make engines overheat whilst running at lower road speeds and in stop-start-stop traffic, and many owners in period removed them (cars in question would be 432-Rs). We shall see how I get on, but perhaps my oversized radiator and the generally cooler weather here will help me with that.

Just for interest, historical reference and....... fun: A few frame captures from film of the S30-series Z's engineering development in 1967/8, showing both scale model and full size wind tunnel experiments:

As a fan - and owner - of Nissan's 'HS30-H' model Fairlady 240ZG, I'm always surprised that seemingly so few people appear to understand what it was, and what it was actually for... The 240ZG - as sold to the general public - was purely an homologation model. It was built and sold to the general public purely as a means to legitimise and legalise certain aerodynamics-related parts that Nissan wanted to use in FIA and JAF Group 4 (and 5) racing classes. Having built and sold a certain number (or - as Ferrari often did - claiming that they would build a certain number of them) the FIA and JAF allowed those parts to be used on race cars in the relevant classes. The parts fitted to the road cars were just a base that was intended to be built upon. Nissan certainly never intended the 'Grande Nose' to be used on its own. It was designed to be used in racing with a splitter/spoiler, and with an undertray/belly pan and full ducting for the radiator opening, radiator support panel and front brakes. None of these parts were practical for use on a standard road car, and were not necessary for the homologation anyway, so they were never fitted to the road cars. Nissan's works race team developed and updated this aero package during the 1971~73 period, and many of the parts used on the works race cars were made available to the privateer racer in Japan through Nissan's own 'Sports/Race Option' parts lists. Not only are most of the so-called 'replica' G-noses that have been sold over the years nothing like the genuine article, but they are not even being used as Nissan intended - as a base on which to build a more complete and effective package. I brought this point up on the previous wind tunnel testing thread, but it still gets overlooked. Tony, Here's the factory 'Under Cover' for my 432-R replica project car, a part that existed from 1969. It can be bolted onto the G-Nose's lower panel as it shares the same mounting points:

The quality of the moulding on the inside is the main proof. There have been many repros and copies made over the years, but the OEM Nissan (Kotobuki) moulding is far more complex (strengthening ribs, moulded-in mounting studs etc etc) than most private enterprises would bother with. Most copies / replicas were FRP, laid up by hand and have natural piece-by-piece variation due to that. In contrast, the OEM Nissan item was made in metal moulds using a Styrene-based material. Fit is usually spot-on. I should have mentioned that your rear spoiler is the *second* OEM shape for the S30-series Z. The very first S30-specific rear spoiler designed and made by Nissan for the Fairlady Z 432-R was a different shape, and was hand made in FRP.

The distinctive shape on the inside of the moulding, the material (it's very distinctive) and the outer shape all add up to point to the OEM part. I've had a lot of them pass through my hands (they were standard equipment on UK market cars) and it's fairly easy to distinguish between the OEM items and the copies/replicas/'BRE'/'Interpart' et al versions. Have you got any reason to think that it isn't an OEM Nissan part?

Here's a factory photo of the passenger side fresh air ventilator duct area, which shows the Japanese market safety signal torch in its holder:

The bracket is for the factory-fitted road safety warning (red) flashlight that was a legal requirement for the Japanese domestic market in the period. No S30-series Z was fitted with an emergency safety warning pyrotechnic flare. Pyrotechnic flares were a much later introduction.

So what is the chassis prefix and body serial number combo on the car in question?

Japanese market cars didn't have the stamped ( alloy ) door jamb manufacturing date tags. That was a US Federal phenomenon. Japanese market cars didn't have the stamped tag on the dash top either. That too was a US Federal phenomenon. I don't know what you mean by "engine plate VIN", but Japanese market cars had an engine bay tag that said 'Nissan' in Katakana. These had the body serial number stamped into them, but no engine number stamped into them. The prefix and body serial combination engraved into the firewall should be the one the factory gave to it. If it isn't, then you have a big problem. In 35+ years of life, anything could have happened to your car. Many of the things you are describing could have been changed, either in Japan or elsewhere during that time. The chassis number should tell us what year your car was made, and that will also help point to its original factory specs.

Not if it was made in 1976, as he reported. No "240Z" style tail light cars were produced after 1973. In fact, this "240Z body" way of thinking is wrong-headed. If it's got an 'S30' prefix then it's an S30 body. That's the correct way to think about these things. "240Z" doesn't mean anything specific. If the OP wants to give his full chassis number ( the prefix and body serial number combo ) I can tell him what year it was made.

Great. Do we get to take guesses at the body serial number that goes with the S30 prefix? What's the prize?

2. It would not have a PASS button if it was a base model 'S30-S' Fairlady Z. 3. It would not have had the passenger foot rest of it was a base model 'S30-S' Fairlady Z. OP mentioned that original transmission was a 4-speed. That would point to it being a base model 'S30-S' Fairlady Z. Whether it has or hasn't, I wouldn't put any trust in Carl Beck knowing anything pertinent about this particular car, or Fairlady Zs in general.

Nothing to do with the topic of this thread. It's another conversation entirely.

No. It's got an Oppama modified E31 head. You need to know what you're talking about before you blab.

So, anybody else want to ask the same question?

That's interesting. I have to say that most of the Japanese market S30-series cars I've spotted in the USA ( admittedly only via the 'net... ) have been Deluxes. So what happened to all those rubber floor mats, non dipping interior mirrors and clock delete blanking plates from the poor unloved Z-Std models? I can offer them a good home...!

S30-109459 would be a late January through February 1974 build date. All the 'S30' prefix tells us for that period is that it's a 2-seater with an L20A engine. No way of telling if it's the basic 'Std' S30-S model or the 'Deluxe' S30 'Z-L' from the 'VIN', but the car itself should be able to tell you from ( what's left of ) its original spec. Nine times out of ten it will be a Z-L if it made its way to the USA as a private import. Myriad detail differences with the North American market models made during the same period. Hundreds, in fact.

No, because human being don't have VINs. Not even Americans. Hopefully you won't have put a stamp on that letter to The Times yet....

LOL Tony, I'm asking what the prefix and serial number combination ( 'Shatai Bango' ) that he wants 'decoded' is, not what a VIN is....