kats Posted March 7, 2019 Author Share #1429 Posted March 7, 2019 (edited) Alan, thank you for the comment , I am so glad that you like this topic and also you have experiences that talking with one of the engineers. When I see you next time , I am really looking forward to hearing anything of Nakagawa-san from you. I think to understand Nissan , I need to know Prince . In late 1960's Nissan merged Prince , Skyline and S20 (and some cars and engines ) came from Prince , and Prince engineers were allowed to take care of those work . They (people and cars ) were different from that of Nissan in many ways . Mr. Sakurai (far right of the picture whitch Alan posted) spoke many many interesting things in the past in the magazines , he always said " Prince was a small company , we were all happy to build cars and engines. We were able to discuss , work , even some times we quarrelled , but everything was valuable . From Boss to young men , we had good communication each other. " Thanks Blue too ! Kats Edited March 7, 2019 by kats 2 Link to comment Share on other sites More sharing options...
kats Posted March 7, 2019 Author Share #1430 Posted March 7, 2019 (edited) Thanks Alan for the pictures of super rare heads , it is a little bit scary for me to seeing "knife edged " triming as I think there are not much meat left around it. Looks like my Z432 has a hand finished port for each , pictures from March 2007 at the shop . Kats Edited March 7, 2019 by kats 4 Link to comment Share on other sites More sharing options...
kats Posted March 7, 2019 Author Share #1431 Posted March 7, 2019 (edited) When the car was under restoration, a few things were not correct like a water pump ( for GTR ) , an engine block ( must be silver ) and an oil filter was for non- cooler type . I had changed them as you know , and the parts which shown I attached pictures are going to be on my spare S20 . And some of you may remember Mr. Takei , a chief engineer of developing Europe S30 team . He drove through Europe with his freshly rolled out Euro 240Z after finished his work , that was in April to September 1971 . After he returned, he reported to Dr . Nakagawa like this , “ Japanese automotive technology is far behind from which Europe has , I think 15 years behind “ Then Dr. Nakagawa said to him “ you go to Europe again and learn from them “ The picture was taken Luxembourg. courtesy Nostalgic Hero extra edition No. 564 Kats Edited March 7, 2019 by kats 4 Link to comment Share on other sites More sharing options...
Gav240z Posted March 8, 2019 Share #1432 Posted March 8, 2019 15 hours ago, kats said: " Prince was a small company , we were all happy to build cars and engines. We were able to discuss , work , even some times we quarrelled , but everything was valuable . From Boss to young men , we had good communication each other. " You can imagine the Prince engineers were a close knit group that worked well together, when the merger happened with a much larger company, there would have been far less freedoms and more bureaucratic squabbling etc.. Big companies are often overly process heavy, compared with the freedom's they probably enjoyed at Prince they were able to be very agile (that business word) and innovative within the group. Just looking at the differences in the S20 and L-series motor. It's clear 1 was made for profit, 1 was made for love. ? 1 Link to comment Share on other sites More sharing options...
kats Posted March 8, 2019 Author Share #1433 Posted March 8, 2019 (edited) Thanks Gavin ,you said just I wanted to say . I really feel big companies are sometimes stressful for both , customers and employees . Yes very slow , even to answer just one question ... I really love both , a lot of trophies were brought by L-series engines from overseas (of cource in Japan too ) , and by S20 engines in Japan. I am so proud of myself being a S30 nut. Kats Edited March 8, 2019 by kats Link to comment Share on other sites More sharing options...
bartsscooterservice Posted March 8, 2019 Share #1434 Posted March 8, 2019 On 3/7/2019 at 8:37 AM, kats said: I would like to share this , Dr. Nakagawa , a former executive of Prince motor company . He was joined Nakajima aircraft company and was an engineer of engines for fighter aircraft during WW2 , he refreshed “Sakae” engine for Zero fighter, also he was a chief engineer of designing “ Homare “ engine for Shiden- Kai . Kats Not much left in the world I believe of the Nakajima Sakae engine ? They are very rare, also the information about them is limited. I find these WW2 engine technology very interesting. The German DB605 is also very ahead of it's time back in the day with fuel injection... Interesting engines... 1 Link to comment Share on other sites More sharing options...
HS30-H Posted March 8, 2019 Share #1435 Posted March 8, 2019 30 minutes ago, bartsscooterservice said: Not much left in the world I believe of the Nakajima Sakae engine ? They are very rare, also the information about them is limited. I heartily recommend 'Japanese Aero-Engines 1910-1945' by Mike Goodwin and Peter Starkings, published by MMP Books, as the best English language reference book on the subject. 1 Link to comment Share on other sites More sharing options...
bartsscooterservice Posted March 9, 2019 Share #1436 Posted March 9, 2019 21 hours ago, HS30-H said: I heartily recommend 'Japanese Aero-Engines 1910-1945' by Mike Goodwin and Peter Starkings, published by MMP Books, as the best English language reference book on the subject. Thanks !! Link to comment Share on other sites More sharing options...
kats Posted March 23, 2019 Author Share #1437 Posted March 23, 2019 Hi , I have got a set of high compression pistons and , titanium conn rods . They are meant to be used in a racing car ( GTR or Z432-R), factory team or private racer . I try not to expect too much , but I think these parts in front of me are real period correct parts which related to either Nissan Murayama , Oppama , Omori racing factory. From early 1969 to mid 1972 , those factories were very busy every day for developing racing S20 engines . Engineers and craftsman tried so hard making new cams , pistons , etc , testing them , and installing them in racing cars .Even heads as well as blocks , almost each race has new parts . Some parts were the same which were sold as sports option in a catalog , but many of them were not listed in a catalog , factory or some private racer only . This titanium Conn rod is the one , not on a catalog but used in racing. This piston is the same , looks slightly different from others . Alan , could you authenticate these parts ? And please tell us more about racing back in those old days. The titanium conn rod is 474 gram , the std conn rod is 710 gram , I have heard titanium is lighter than steel , it is about 2/3 . So , looks like I have got a correct one ! Kats 2 Link to comment Share on other sites More sharing options...
kats Posted March 23, 2019 Author Share #1438 Posted March 23, 2019 (edited) A set of parts , and Z432-R racing manual. It is said that STD pistons are casting made , on the other hand racing pistons are forging made . Even this page doesn’t mention about titanium conn rods , it is the sign of “ titanium conn rods are specifically made for factory racing “ isn’t it ? Kats Edited March 23, 2019 by kats 3 Link to comment Share on other sites More sharing options...
kats Posted March 23, 2019 Author Share #1439 Posted March 23, 2019 I am waiting for getting a set of racing cam “8L “ and adjustable cam sprockets which were also used in racing cars from my friend . I won’t be able to come by titanium valves , special springs etc , so looks like I am done , I am satisfied at this moment. I just hope my spare engine project going well , I don’t race , I will be happy if the engine is just running. I set the goal , build the spare S20 engine like someone who race but not enough money to buy complete set of racing parts . I will tell you later my feelings when I run the engine. Partial racing parts installed ! Kats 3 Link to comment Share on other sites More sharing options...
240260280 Posted March 24, 2019 Share #1440 Posted March 24, 2019 WOW!!!! 1 Link to comment Share on other sites More sharing options...
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