kats

Hi Roo, Me neither, and also engineers were shocked when they saw the results of Cd and Cl at that time. I will upload the remaining pages. Before that I will try to explain that Mr. Miyazaki told me about how bad the opening front end of S30 was. Just like you proposed, it was the issue of S30 which engineers had to deal with. I will draw a picture by hand, Mr. Miyazaki said S30 front end is so wide that it leads too much air coming through the radiator. Then the air can't go through under the engine because the air was blocked by the air stream which is flowing underneath of the car. At the end, the pressure of inside of the engine bay becomes positive, it pushes the front end. The higher front end gets more Cd worse. This story I think it relates the story of 15mm lower front end of Europe model (except Portugal model). And Mr. Miyazaki even told me there was a test car which had a factory air conditioning coupled with Z432!! (Z432 was not able to make a choice of air conditioning from the factory). During the test of aerodynamics, one day he was wondering why one car had a better value than other cars. The better one had an air conditioner condenser in front of the radiator. Less air gave less lift. That was a Z432. Kats

Alan, Your explanations made me realize the real meaning of Blunt. Yes the change to "Grand-Nose" is better, even people in the sales department were not fully educated why "Blunt" is literally not suitable for the image of the extension pieces. I think of course Mr. Yoshiyuki and Mr. Uemura knew how NASA's Blunt nose looked like and meaning of "Blunt", they might just wanted to barrow the image of detachable nose piece, not barrowing the meaning of "Blunt". By the way, "Blant" is just a spelling mistake? Kats

Hi Alan, I reviewed it once again to see how it was connected to the University of Tokyo's department of Aerodynamics and Aeronautics. I don't see it as we expected at the moment. I believe before 1969, the University of Tokyo was the only place where had a wind tunnel, but it was for 1/4 models not for full size scale car. So early days of styling development and aerodynamics study, engineers brought their 1/4 scale models to the wind tunnel at the University of Tokyo. In 1969 Nissan built a full size scale wind tunnel at Nissan Oppama. This thesis was made by using the wind tunnel at Nissan Oppama. Some of the engineers graduated the University of Tokyo's department of Aerodynamics and Aeronautics, so we can say the thesis was connected to it, though. Kats

Hi, For someone who is interested in aerodynamics of our S30 cars, here is a thesis made by Nissan engineers in May 21st 1971. Aerodynamic Study on Passenger Car Body Configurations / Michio TAKEI, Hikota SAKAMOTO, Kazuhiko YOSHIYUKI. The effects of G-nose and spoilers are quite noticeable, 7 pages of this thesis is worth to read. I'm not an engineer so some of the numerical formulas are unable to understand but the figures and illustrates work easy for me. So, I tried to show one of their data. Those numbers in pictures are excerption from the thesis. The only thing which I am not for sure is the data of Clr for the rear spoiler only configuration. It shows 0.007, it is too small isn't it? By the way, Mr. Uemura told the story of naming our G-nose in his book. "Blunt-Nose", Mr. Yoshiyuki and Mr. Uemura felt it was a cool name of NASA's Blunt-Nose cone which was attached on top of the satellite. They named their nose extension kit after the NASA's Blunt -Nose but the Sales department worried about that people would not understand what it would be. Finally "Grand- Nose" was used. Kats

Hi Patcon, maybe in Tampa with your car next year? That will be great! Kats

No, we appreciate your knowledge! Kats

Hi, I had a blast!! I am so glad that we got to see each other all at once. Alan, we talked about you a lot. Kats

The spoiler will be correct for your 12/70 car I think. In Japan, the spoiler was an optional item for any car listed in the brochure. Some other destinations had it as an optional item too. Kats

Hi SpeedRoo, thanks too! This picture is my favorite, and fascinating! Thanks Chris (26th-Z) for sharing it with us that was more than a decade ago. Let’s hope we will find more interesting stories and pictures. Kats

Thanks for the link, I am impressed by your wonderful collection of goodies, they are rare, I have never seen them before. And about the attitude of Nissan, not to disclose details about our car. Yes actually I was talking about it with Mr.Miyazaki. Mr.Miyazaki agreed with me, I told him how much we want to know about our car’s birthday and what ship loaded our car to the port. I am still dreaming about to find the record of our car’s history in Japan. Kats

This week I met two very important people for us. Mr.Miyazaki, a former member of vehicle test group for Europe and also did aero dynamics analysis for S30. And Mr. Uemura, a former member of Kaku - U team (test drive in US & Canada) and also he designed general layout of S30 chassis and suspension components. The picture is Mr. Miyazaki, he told me a lot of new things which we have never heard of before. One of them is, each our S30 can be tracked down by chassis number to see when it was made. Not only that, it can be tracked down by chassis number to see it was made in daylight time zone or midnight time zone. This story is like this, Mr.Miyazaki said to me, “ one day I visited Nissan Shatai around 2:00 a.m. midnight to see how workers were doing at the assembly line. Nissan got complaints from customers about insufficient looking of rear deck vinyl trim. It was not only a single complaint, one after another. AND ALL OF THEM WERE CARS MADE AT MIDNIGHT. I was surprised, a quite young girl was working and crawling and sitting in a rear deck to sticking the vinyl trims. She was an only worker who did the job at the assembly line. I felt sorry for her, I couldn’t say harsh words to her”. Then I asked Mr.Miyazaki how did you know it was happened at midnight, Mr.Miyazaki said “Nissan Shatai has the data, each car can be tracked down by the chassis number. In this case, interior trim section had three or four time zone, each time zone they recorded chassis number they worked” Can we see when our cars were served at the assembly line? Mr.Miyazaki said “they might still have the record, I think” I hope it too! Kats

Thanks Alan, so you pulled it out from the works rally car, what a wonderful thing you have got! The small label shows February 1971, must be corresponding to the car’s manufacture date. I need to put the label on to my oil coolers! Kats

Hi! I don’t know when. I want to know it too. Maybe somewhere in between from late 1970 to late 1971. Kats

Thanks Patcon and Alan, I didn’t know that, there was a paint manufacturer from Germany for our cars. And the paint samples! They must be so good, because it is German quality. Kats

I have been looking for original color for my blue 240Z, color “Universal Blue 903”. I finally got to know the manufacturer DAI NIPPON TORYO (DNT) and they made a sample for me for free of charge. We know Nissan used TANABE KAGAKU for the metallic paint, and there are mixing ratio of colors, this information can be seen only in Fairlady Z service manual. I have never came up to see those instructions in any other manuals. That means there is no information for Universal Blue 903 because it wasn’t available for Fairlady Z series. And seemed no Nissan domestic cars were sold in blue 903.(maybe I might be wrong). But I tried to ask a local paint shop which is very helpful for me and they found TANABE KAGAKU was merged into DNT. DNT replied they still have data of Nissan metallic 903 and 901 which they were originally provided by TANABE KAGAKU. Unfortunately, today’s paint isn’t the same like 1969 acrylic enamel paint. But I am happy that I think the paint has DNA of original 903/901. Please see the samples, I think it looks little bit lighter than my original 903 around the spare tire area, I have to decide to go with 903 or put a little bit arrange with this 903. Also, I really love 901 silver. I realized that my Z432 has much brighter silver, so back to 901 will be on my to-do list too. Kats

Hi Chris, I see it is interesting too, maybe for a quick replacements in a pit work? The one near the hose attached looks preventing the nut from being obscured. Kats

Thanks Alan, I have never seen that pictures of works rally car before, very interesting! I count and would call it 18 version, the outer pieces on both sides are just a frame, no oil go through. And your Z432-R project car has also the 18 version! So what kind of car does 14 version fit in? Kats

21355-E4223 & 21355-E4222 It is very hard to read for the one. Kats

Here is my oil cooler for my Z432.(they are not for sale, the one on sale is a different one ) I have found there are two different types. The one has 18 cores while the other has 14 cores. Which one is older? I have seen 18 version was used on some works Z432, but haven’t seen 14 version yet. Maybe works rally car has both types? Kats

Hi, you got very nice stuff for your Z432, they are hard to come by recently. I have seen some silver cad tire hold-down tool so you are having correct color for it. And the intake air duct, it will be a nice spare for you as a Z432 owner. By the way, do you want a complete set of oil cooler system? Also a S20 works version valve cover (machined plug cap holders with special plug wires) is available. If you interested in, please let me know. Kats

Hi Gavin, the tach is genuine one from Nissan sports optional parts. I combined its face and needle plexiglass with a standard Z432 internal mechanisms. If I had a optional igniter called “orange box “, that could drive the sports option tach. Kats

Great work, I am going to do the same thing for my 240Z. This will be very helpful for me as a guide book. The decal caught my eyes, I didn’t know it is there! 「日本ラヂエーター」Nihon radiator Co.,ltd. (NICHIRA) I will check my blue 240Z if it still has the decal on it. Kats

I checked my book shelves, it didn’t mention who but BMW507. Did you read my report of a dinner with Mr. Yoshida and Mr. Tamura? I believe no one has ever been told about story of Mr. Goertz’s work before. He didn’t say what to do about S30. Also He didn’t show any single sketch for S30. He couldn’t, because he left Nissan well before the styling study of S30 began. He would never have been able to answer how and why for the styling details of S30. Because he wasn’t involved with the team. Kats

Today I finished my homework, summary of transmissions. For S30 series [F4W71A] 3.549 2.197 1.420 1.00 3.164 All except Europe and AUS (optional for HS30) Oct 1969 to Aug 1971 Sleeve type [FS5C71A] 2.957 1.858 1.311 1.00 0.852 2.922 JPN(S30 HS30 PS30), EUROPE, AUS Oct 1969 to Dec 1971 Flange type [F4W71B] 3.592 2.246 1.415 1.000 3.657 JPN (S30S GS30S S31S GS31S) Sep 1971 to Jun 1978 US & CANADA Sep 1971 to Nov 1974 Sleeve type 3.321 2.077 1.308 1.000 3.382 US & CANADA Dec 1974 to Jun 1978 Sleeve type [FS5C71B] 2.906 1.902 1.308 1.000 0.864 3.382 JPN(HS30 PS30) Jan 1972 to Aug 1973 Europe Jan 1972 to Jul 1976 AUS Jan 1972 to Jun 1978 Flange type (up to Aug 1972) Sleeve type (from Sep 1972) 3.321 2.077 1.308 1.000 0.864 3.382 JPN (S30 S31) Jan 1972 to Jun 1978 Europe Aug 1976 to Jun 1978 Flange type (up to Aug 1972) Sleeve type (from Sep 1972) [FS5W71B] 3.321 2.077 1.308 1.000 0.864 3.382 US & CANADA Aug 1976 to Jun 1978 Sleeve type Anyone can add or correct if you find something needed. Even the factory manuals have some errors! Kats