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My two swiss S30Z Fairlady Restoration build thread


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4 minutes ago, RIP260Z said:

I presume you realize the spanners are imperial (inch) in size, not the metric for the S30, so won't fit?

Yeah i know that. they don't seem to be the original ones. still wondering how i got them then? i didn't buy those. Nevertheless. finding a correct set is on the to-do list, but has a low priority 🙂

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  • 1 month later...

Today i visited a Datsun friend and picked up some parts like these rear window rubbers:

A used Door mirror (mine came without those)

A set of NOS Window insulators:

A NOS transmission boot rubber:

And a bunch of catalogues. The orange one is a 1972 belgian catgalogue and the other one is a french one. But the on on the top right is the really rare one i car about.

It's the very early March 1971 Swiss sales brochure. I have never seen this one (with US-spec car) before. The later one with the red euro spec car is much more common.

Inside you find the usual press photos and information. nothing special.

On the rear the Monte Carlo rallye 1971 is used to promote the sportiness of the Z. Mind the monte carlo rallye was held only about 6 weeks before this brochure was released.

What is also interesting is the paper. It has a texture like the 240Z Vinyl dashboard and has a very exklusive feel. Nice score!

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  • 2 weeks later...

So a few days ago i was able to pick up the remaining parts from the Big "Barn find lot" The owner  had kept three boxes of various fasteners for the 240Z for himself, since he had to assemble his car first. This is what is left over. All nicely cleaned and with a fresh coat of zinc and yellow passivated:

The parts are nicely split up into "random fasteners":

Metric bolts and self-cutting screws

Nuts and shims:

So that "sub-project" is now completed as well. Not sure however if those parts really all belong to the 240Z. Some of them don't seem familier.. but that doesn't matter i'm sure they find their place 🙂

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Well thanks to an input from a datsun group i found an Oil pan i've been searching for for a while. Last time i lost the Auction, but this time i was better prepared, and today it finally showed up at my doorstep:
The Promodet L6 Large capacity oil Pan:

The manufacturer, Promodet Japan, is still active today, but is a well-known porsche tuner these days. I've seen those oil pans a few times in Japan, but they seem pretty rare.
I wonder if anybody has mor information on their S30 / 240Z parts lineup they used to have? Old catalogue pages, advertising, etc anyone? would love to see the cars they used to belong to, and what else they offered.

It is made from cast Aluminum and has an additional baffle plate, something that looks like small cooling fins and an additional plug for an Oil temperature sensor.
I think the Blue fitting is not the original one, so i will try to find a plug that suits the whole thing better.

Also the original drain plug seems pretty worn out. Luckily i have a new Nissan magnetic drain plug, which will go there:

Here's a look at the baffle pan on the inside:

It has some wear and tear here and there, but still seems to be in quite good shape:

And for those wondering: here's a size comparison of the original 240Z oil Pan to the Promodet pan:

Thanks to the person who pointed me to the pan!

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  • 1 month later...

A while ago i decided to get myself a complete, original toolkit for the Z, just for completeness sake. In part 1 of the story, i got my first items, but i realized that some of the tools where not from the Z as they where not metric. It's nothing high on my bucket list, but when i see something for sale locally and the price is ok, i try to get it. So this is why i got a few things in front of my door today, all the way from a german 240Z owner. Still have to figure out if all the pieces are really from the 240Z, or maybe one or another item is from another car, but at least it seems to be a step closer to completeness. most of the tools are not in a great optical shape, but that can be handled i guess.. for now i just put them in storage. i have other priorities with the car atm 🙂

So what did i get? Well the scissors jack, wheel nut wrench, two of the wrenches and the red handles.

It all needs a bit of cleaning, but i somehow like the original patina and all the original stickers are still there:

Oh and since the seller had this for sale too and it was missing on my car, i asked for the Spare-tire mounting kit too. One piece more in the puzzle 🙂

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My April 1971 240Z had only the 2 non folding wheel chocks, jack, jack handle pieces, lug wrench, and stow bag when I bought it as a new car.  It also came with a small Nissan labeled can of matching paint in the storage bins. It did not include open end wrenches or spare lug nuts.  Does the parts book list wheel change kit contents and spares that were included on delivery?

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18 minutes ago, psdenno said:

My April 1971 240Z had only the 2 non folding wheel chocks, jack, jack handle pieces, lug wrench, and stow bag when I bought it as a new car.  It also came with a small Nissan labeled can of matching paint in the storage bins. It did not include open end wrenches or spare lug nuts.  Does the parts book list wheel change kit contents and spares that were included on delivery?

As far as i know there were several different versions of this toolkit depending on the market and year. I got one very similar toolkit as what i have now with one of my 1972 cars, but unfortunately gave it away with the first chassis without knowing the second one didn't have a toolkit...

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  • 2 weeks later...

You may have realized by now that the project is a bit on hold by now. The reason is i took over a management role in my job, and besides i'm also studying management. Good thing is after some first chaos i've settled in my new position and things are getting calmer and then i have my exams soon, so after that i have finally much more free time  (after 2 years of school = home-study in the evenings and school on the weekends). The plan is to  jump right back at where the project stopped aroun april 2022 and go full throttle. i really want to complete this build and i have so many nice parts in stock to go on the car. But from time to time you have to treat yourself with some small gimmicks to keep your brain active on the project.
The first thing i got was a contactor set, which was for sale NOS locally and cheap. How could i say no? It's kind of funny to see the mitsubishi logo on the genuine Nissan part :-)

Also  got this nice german book about the Z. It seems to be a quite well researched book compared to most others (in german).

They even got the Goertz story right, i ncluding a print of the letter that nissan sent to him about the design:

And then got myself a RAL colour chart. Why you might ask? well I'll show you that in a coming update. and NO, the car won't be painted in any of those colors :-)

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  • 2 weeks later...

Keen readers might remember i was collecting parts to puzzle together an original, complete tool kit. With my first orders i got some wrong parts and some were still missing. Thanks to a tip from my Datsun-Mate Dan. i recently found this kit with the exact missing parts for sale in UK. Naturally i had to get it. So this is what arrived today:

An original Nissan branded pliers, along with a double-headed screwdriver

And s et of wrenches. This time metric ones and not inch-based sizes. I still have to check all the details. But i guess with my previous purchases the kit is complete now.

More parts are somewhere on a container outside japan now. so expect more updates soon (might still take a few weeks until they're here)

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  • 2 weeks later...
  • 1 month later...

Some weeks ago i got in contact again with Kris, the guy who bought a few parts from me,  including my first, white S30 Chassis.
He's currently building a crazy Blow-through turbo S30 (more on that when it gets closer to completion) with all tricks and gimmics and a lot of custom fabrication, which includes a custom cast Turbo surge tank. For that reason he once bought some surge tanks from Japan to use as inspiration for his own design. Luckily he doesn't need them anymore, so they were up for sale. And even though i don't need them at all, who am i to turn down an offer on such cool and rare vintage tuning parts? So i went to their garage yesterday and picked up all of this. What a score:

The lot includes a set of 80'ies blow-through surge tanks:

The first one is more commonly know. the SK compe turbo aka Sanyo-kiki Turbo surge tank:


This surge-tank acts as an intake manifold champer to the careburretors with an turbo attached to it. Yes, these where the very first and early turbo kit designs:

Ther second one, which i've never seen before is from the same era, but it's a JKC - Japan King charger surge tank, which was used together with a supercharger.

The design is very similar to other brands like HKS, but has those unique fins on it. The basic working principle is slighty different to. the one above uses a kind of "baffle plate" inside, while this one has a cast chamber inside.


Oh and he also had a huge bunch of Carboy and other vintage tuning magazines on hand, which he lend to me. There is a lot of advertizing and information on these turbo and supercharger kits in there. So i will try to complete my post about the different intake manifolds and turbo / supercharger surge tanks for the L6 engine with the latest informatino i got now. Thanks Kris for the Hospitality, and see you soon!

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4 hours ago, RIP260Z said:

Nice, hadn't seen the JKC one before. My friend runs the HKS type 2 surge tank on his twin turbo set-up.

Thanks. i recently found a load of pictures and ads of ones i haven't seen before. i plan to update my Intake manifold and surge tank post (see link in previous post) with all the new ones, once i scanned them. Probabyl in the next 1-2 weeks.
Need to go through all the carboy magazines first 🙂

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I've been crazy busy at work and education, and i'm also working a bit on the big garage / Workshop update and a little refreshing work for the Honda. But more on that soon on this site.
I still managed to get some small things done for the Datsun here and there. Like (finally) ordering those Datsun Mikuni / PHH44 Carb insulators, which showed up a few days ago:

They came from Nissan USA, with a little help from a local chap. Thanks again!

They were once offered under a different partnumber in the option catalogue and i'm not entirely shure they're exactly the same, but they fit perfectly and are OEM nissan items, so i'm perfectly fine with those.


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  • 1 month later...

I recently collected a few different Carb insulator setups. mainly  just because i first got the wrong ones, and then some more 🙂

Left to right. Original Datsun PHH44, but for the U-series (Fairlady) Engine, PHH44 L-series replica, PHH40 (L-series) Replica:

The main difference between the U and L-shaped items are a slight offset in the stud position (see left)

What also came in one of those deliveries was a set of NOS rocker arms. Not sure if i will need them, but as you know i can't resist whenever NOS parts get offered:

So my "fun" Motor intake side setup is nearing completion. I meanwhile have enough parts to build one standard and one "sport" motor.

Also just got a call today that a pallette of parts on the way from japan will arrive next week in the Port of Rotterdam, before being delivered to switzerland (Just as the Datsun parts and cars, back in the days)...
So i'm quite excited 🙂

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46 minutes ago, HS30-H said:

Surprised to see you intend to use that type of rubberised insulator on a six. I don't recall Nissan ever using anything other than the solid, phenolic type insulators on the sixes. 

On the L4 yes, but not L6.

The rubber ones are Nismo and were part of a kit Nissan sold for L6.  

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1 hour ago, duffymahoney said:

The rubber ones are Nismo and were part of a kit Nissan sold for L6.  

'NISMO' is by definition 1984-up. Pretty late L6-wise.

I don't recall Nissan ever supplying them for the L6 until at least (off the top of my head) 1976-ish? That's a long time with the solid phenolic type, which they tended to use on the Works cars by the way.

They have a reputation for moving around too much when they get hot. And on an L6, they get hot. They also de-laminate, crack and otherwise react badly to certain fuel additives. 

Other than that I love them... 😉

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11 minutes ago, CanTechZ said:

There's some interesting reading in Bill Fisher and Bob Waar's book:

"how to modify DATSUN 510 610 240Z engines and chassis"

I have a copy from 1973, it's a good read. Here are a few snippets related to isolators for Mikuni/Solex carbs,

So, isolators commonly required on fours, but much less so on sixes.

On other marques & models I've been familiar with over the years (quite a lot of Italian, French, German and British stuff), rubber/metalastik isolators, MISAB plates (basically a gasket with an O ring in it) rubber bobbins, contraptions like the dreaded Thackeray Washer and all sorts of other funnies were dreamed up in an effort to mitigate heat soak and fuel frothing. Almost always on inline fours, with their inherent harmonics.

I think in most cases they are just not necessary on a Nissan L6.


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On 12/9/2021 at 10:04 PM, munters said:

and good luck to pass the inspection in Switzerland. the triples without Veteran status yes. the filters and max 73db no way. At least not in Zurich.

Yeah i know. that's why i plan to build two engines. You might know i have quite some experience with homologating cars (from my Honda project, where i did a complete homolocation of a car, which was 7 years of work spent...).

On 12/10/2021 at 2:37 PM, RIP260Z said:

If you weren't aware, the U20 Solex carb insulators (16174-25501) have a gasket either side of them, one manifold, one carb. There are also 50mm versions of these.

Yes, but only the insulators itself were still available from nissan, from where i got those for the U20.
The L6 insulators also have those insulators on both sides of the gaskets. as seen in the options catalogue, etc.
The ones i've got for the L6 have gaskets on both sides, but in the photo only shown on one side, because i was too lazy to remove all the nuts on the other side of the insulators, just to get those gaskets off for the photo. 😉
See here the race and rallye preparation manual for the 240Z: (#3 are the gaskets, #2 is the insulator)

On 12/9/2021 at 9:18 PM, HS30-H said:

Surprised to see you intend to use that type of rubberised insulator on a six. I don't recall Nissan ever using anything other than the solid, phenolic type insulators on the sixes. 

On the L4 yes, but not L6.

Hmm good input. Honestly i never really thought about that detail. I just got what was available and thought it is close to the originals. I've sadly never seen an original set in real, so i don't have anything to compare or even start with.
I'm not sure how much of an impact that detail has. I think my setup is quite "experimental" anyway (at least to me). So i'm curious to find it all out by trial and error. Currently i just collect random parts and then try to puzzle it all together later into something nice.
Luckily there weill be a second  (more or less stock) engine to put into the car, so the parts shown here are for a little "fun engine" side project. 🙂

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