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    • Apr 29thPopular Bosozoku cars: Tomica Nissan Skyline KDR30


      Last week the poll decided the Tomica Skyline KDR30 as a winner in the sudden death between this car and the Impul Silvia Turbo S12. Therefore I feature a Popular Bosozoku Cars special this week: the Tomica Skyline RS Turbo KDR30! 🙂

      The Tomica Nissan Skyline RS Turbo KDR30 Super Silhouette
      The Tomica Nissan Skyline RS Turbo KDR30 Super Silhouette

      The Super Silhouette Formula was fully according to the rules of the FIA Group 5. In 1979 the rules were changed to Generation 4 in which the FIA allowed the so called “Special Production Cars” in which the FIA allowed cars falling in Group 1 to 4 can be modified extensively but restricted the width, the height (roofline) and the shape of the car to remain original (hence the silhouette name). The loophole was that is only accounted for the body of the car and not for the fenders and therefore cars were still standard width but featured the ridiculously wide fenders. Maybe you can best compare the Super Silhouette formula cars to the current modern DTM racers with their big winged silhouette cars.

      In Japan these series were new and were used as a warm up of the Fuji Grand Champion of the year. After 1982 the FIA changed the rules of the Group 5 in favor of Group B, however it continued in Japan as opening races for the JSPC during 1983 and only two races were held in 1984.

      The Tomica Skyline was renowned for spitting flames each downshift
      The Tomica Skyline was renowned for spitting flames each downshift

      After years of absence in production car racing Nissan intended to fully dominate the new group 5 series and returned with a set of Fairladies in 1979 and lost. In 1980 and 1981 private teams used a Nissan Violet 710 and a Silvia S110 and Nissan supplied them with parts like the LZ20B engine. The S110 only had two wins during those early years In 1982 they teamed up with Nissan and had a line up of the Skyline KDR30, Silvia S12 and the Bluebird 910.

      And it worked: the Tomica Nissan Skyline KDR30, driven by Hasemi Masahiro (a former KPGC10 driver), dominated along with the Impul Silvia Turbo S110 in 1982 and the S12 in 1983, driven by Hoshino Kazuyoshi, the Super Silhouette formula series in 1982 and 1983 while being backed up by the Bluebird KY910. The Skyline KDR30 had a total of 7 victories: 2 in 1982 and 5 in 1983!

      The Tomica Skyline rushing to victory
      The Tomica Skyline rushing to victory

      You can see an interview with Hoshino Kazuyoshi and Hesemi Masahiro in this video. (unfortunately no embedding…)

      Based upon the shape of the Nissan Skyline RS R30 the Tomica Skyline KDR30 was one of the most powerful cars in the Super Silhouette formula. Note that the Skyline RS Turbo only was for sale after the Tomica Skyline KDR30 raced for over a year! Also the RS-X Turbo Tekamen (???), as known as the Iron Mask, was launched in august 1983 which is almost at the end of Super Silhouette Formula era. The car never got facelifted to match up with the RS-X new front end.

      Huge spoilers were needed to keep the car on the ground and even the rear end was lengthened to create even more downforce on the rear wheels. To keep the weight down (1005kg!) the car featured a tubular chassis with only partly a monocoque design of aluminum. All exterior was made from fibreglass and of course they needed a 2 liter racing spec engine to power this beast.

      How we often see the Tomica Skyline nowadays
      How we often see the Tomica Skyline nowadays

      The car featured the LZ20B engine. The LZ engine was back then the racing spec engine by Nissan and was based upon the L engine (many flavors) featuring a different head with a 16 valve twin cam. So the LZ20 was basically an overbored L20 engine (2082 cc instead of 1952 cc) with a special twin cam 16 valve head on it. The LZ20 engine was first used in a Nissan Violet A10 doing a safari rally but featured in many formula race cars later on.

      The LZ20B used in the Skyline KDR30 was improved a lot over the years and featured electronic fuel injection and turbo charging through a T05B turbo. It was able to output 570ps (563bhp) at 7600 rpm and delivered 539 nm at 6400 rpm. The competing Silvia Turbo S12 and Bluebird 910 did also have the same LZ20B engine but both were entirely different tuned: some sources say the Silvia was only capable of 500ps and it did that at 8000 rpm. For the Silvia it didn’t really matter because it was much more streamlined than the Skyline and Bluebird.

      The Tomica Skyline being pushed from the pits to the track
      The Tomica Skyline being pushed from the pits to the track

      To keep the car on the track SSR provided the front rims of 15 inch and the rear rims of 19 inch in diameter. Note that the turbine lookalike rims only featured during the 1983 and 1984 season: in 1982 it featured Rays mesh type rims as seen in the picture above. The Dunlop tires were 270mm wide and at the rear 350mm, that is almost as wide as the current Formula one spec! Also the car was slowed down by four Lockheed disk brakes with four pistons per caliper!

      In this old video you can see a highlight on the Skyline KDR30:

      You can really see the LZ20R, the intercooler and the big lockheed disk brakes well in this video.

      And in part 2 you can see it perform during a race:

      Also this car gets confused with the Group C Nissan Skyline RS Turbo C which also featured the number 11 in some occasions. It looks quite similar but is not the same car. This car was ordered by a Nissan dealer in South Africa to feature in the Kyalami 9 hour endurance race in 1982 and had to meet the Group C specifications. It is lower than the Super Silhouette Formula counterpart (different height regulations) and has a different front and rear. The car was used in a few other Group C races as well but was never really successful.

      Nissan Skyline RS Turbo C (Group C) is a different car
      Nissan Skyline RS Turbo C (Group C) is a different car!

      Nowadays the car is still regarded as an incredible piece of history. It marked the return of the Skyline to the racing circuits which was very important for the Japanese audience. It even resulted in the hope the GT-R designation would return on the Skyline but Nissan waited with that till 1989 with the debut of the R32. You can still buy lots of merchandise around the Tomica Skyline KDR30 Super Silhouette formula: diecast models, model kits, posters and it even featured in Gran Tourismo 2 as a price car in the 80’s Sports Car Cup. 😀
      The Tomica Skyline available as diecast model
      The Tomica Skyline available as diecast model from Ebbro

      The funny thing is that I was unable to find a Tomica diecast of the Tomica Skyline KDR30 Super Silhouette so far… So if anyone found one: let me know! 😉

      I really understand why the looks of this car got copied in so many ways: it looks like an unleashed beast when driving on the circuit! It was an incredible and outragious car at the same time! And eventhough it only shared its front and tail lights with the original Skyline RS it is still an icon for the whole Skyline R30 generation.


      This entry was posted in Super Silhouette and tagged bluebird 910, group 5 racing, lz20r, Nissan Silvia Turbo, nissan skyline r30, Popular Bosozoku cars, Super Silhouette by banpei with 5 comments
      • Comments

        1. MAERSK says:
          December 19, 2009 at 7:30 pm

          I was originally browsing info on WRC and started clicking links and one thing lead to another and I ended up here!

          I want to thank you for writing such a great article. I remember back 10 years ago when GT2 came out and I had obtained the Tomica Skyline from said race and I was shocked. I’ve never seen such a radical looking yet elegant car in my life. Not only that but it also kicked ass on the track.

          Nice write up and great blog. Thanks again so much for the insight on the history about the car. I just hope one day my eyes would be able to lay sight on the real thing.

          Reply
        2. ferrari21 says:
          September 29, 2010 at 4:49 pm

          I was just aimlessly browsing google and came across this article. I have a huge place in my heart for 80’s era sports cars, and there is a lot of great information in here about how the Skyline evolved into what it is today.

          I appreciate the information, great pictures and write-up!

          Reply
        3. Gan CH says:
          December 22, 2011 at 2:49 pm

          Great site and information! I am confused was this R30 or R31 since the head really looks like a R31. Then I browse around looking for information since I finally framed my large poster bought back in the 90’s hahaha. Thanks again for the great website!

          Reply
        4. Steve says:
          January 18, 2015 at 6:59 am

          Are you still chasing one of these 1:24 diecasts?

          Reply
          • banpei says:
            February 6, 2015 at 10:49 am

            Thanks for the offer but I already found one by now.

            Reply
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