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History Of Jdm Minis


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#1 surfbluejdm

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Posted 14 February 2025 - 05:15 PM

Hey all,

 

I just purchased a JDM Rover Mini and I'm curious as to the history of how Mini's became so popular in Japan and how the production of the cars actually worked.

 

I've seen a couple of videos about a Japanese gentleman who had a personal relationship with John Cooper and worked to bring Minis to Japan, so that seems like a bit of an origin story as to the popularity.

 

But I'm curious as to how production worked and when it started.  The body tag on my car indicates it was built in the Longbridge factory complex, but it clearly has some JDM-specific things about it that all or most JDM cars had, particularly the presence of air conditioning. 

 

Were the cars mostly built in England then shipped to Japan where they were outfitted with other parts and pieces?  Who installed the JDM-specific items?  Did BMC have a Japan factory for finishing the cars?

 

Any info would be greatly appreciated!



#2 nicklouse

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Posted 14 February 2025 - 05:53 PM

All JDM Minis were built in the UK to Japanese specs. JDM. They were not made in Japan.



#3 nicklouse

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Posted 14 February 2025 - 05:54 PM

Oh it was popular as it was small and fitted the parking places.



#4 surfbluejdm

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Posted 14 February 2025 - 05:59 PM

so the A/C system was installed in England?

 

when you say Japanese specs, who determined those specs?  was there a Japanese sales partner or told Rover what changes to make?

 

I'm asking all of this because my background is with Volkswagens and they have a variety of situations and business relationships in the past regarding foreign export.  Sometimes VW opened foreign factories for 100% of assembly tasks, sometimes they built cars in Germany to a certain % of completion and they were finished in the foreign market, sometimes they had direct sales for german-built cars, sometimes they had a local partner who was basically a sales franchise.  all over the place.

 

so I'm curious how it works with BMC, Rover.



#5 nicklouse

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Posted 14 February 2025 - 06:36 PM

They were built in the UK to Japanese requirements.

 

Rover did not have over seas factories.  But there were other companies that built Minis under licence Inocentti in Italy, Authi, in Spain. BL Australia, Kits were also sent out to built up in other locations. Then there was the plastic fantastic Chile Mini. And Senife in Belgium built quite a few fir the euro market and their own special.

 

but the JDM market was small. 
 

nothing like VW. BMC/BL/Rover had way to many problems.



#6 beardylondon

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Posted 14 February 2025 - 06:56 PM

Nick is spot on, I would presume someone at Rover did a fishing trip to Japan and/or spoke to experts and worked out what Japanese market required, Air Con being the main extra. Which was never offered by Rover for UK minis.

In the U.K. we had SPi Minis and later MPi minis, for reasons I’m not aware/cant remember, the JDM spec is an amalgamation of the two.

Someone more knowledgeable than me will enlighten us!

Edited by beardylondon, 14 February 2025 - 06:56 PM.


#7 Spider

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Posted 14 February 2025 - 07:18 PM

Just as I sold my business I was approached by Harry Suzuki (I had known him for many years, he was the Navigator for Bruce Garland, who I also know. Bruce and Harry campaigned for Mitsubishi for many years in the Paris Dakar taking podium many times), to build replica Cooper S's for export to Japan, this was in 1988 or 1989 and the cars had to be based on a shell of 1969 vintage or earlier. As I'd just sold the business I spoke to Bill (the new owner) about it and together we built up probably 30 or more cars, all exported to Japan. We did it in the proviso that they were sold as Replicas and not the real thing. The build date requirement on the shell if I recall, was to avoid the need to comply with later specifications. I'm not sure when Rover got on board with it, but we couldn't build enough of them, most were sold before they left the workshop.

 

 

so the A/C system was installed in England?

 

when you say Japanese specs, who determined those specs?  was there a Japanese sales partner or told Rover what changes to make?

 

The A/C was fitted in the UK and the specs were in part dictated by local Japanese rules and in part by Rover's research in to the market.



#8 mab01uk

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Posted 14 February 2025 - 07:33 PM

The Japanese market for Rover Minis started to grow in the 1980's when some diehard Japanese Mini enthusiasts (like Mr Maruyama below) asked John Cooper to produce 'Cooper upgrade kits' to ship to Japan to convert their 998ccc Rover Minis imported from the UK to Cooper spec. A long story but eventually John Cooper was able to convince Rover that re-introducing a 1275cc Mini Cooper using the MG Metro engine for the Japanese market would satisfy a demand in Japan and boost Mini sales in the UK and other export markets. That finally happened in 1990 with the introduction of the RSP Mini Cooper and the rest is history....without the demand from Japan it is unlikely the Mini Cooper would have been re-launched and kept the Mini in production until 2000.

 

mJ4pOXzh.jpg
 

Mr Maruyama and his Minis.

"There is probably no one in Japan who feels as close to the Mini brand as Kazuo Maruyama. The 74-year-old has had a deep passion for the little car since the 1960s. Many historic models are on display in his workshop – including one of the oldest Mini ever, and a special racing car by John Cooper.
When it comes to collecting cars in Japan, few can compete with Kazuo Maruyama. The 74-year-old who runs Mini Maruyama, a museum-like garage in central Tokyo, owns a spectacular body of vehicles, many of which cannot be found anywhere else. This includes one of the world’s oldest Mini, a present he received from the car’s inventor, Sir Alec Issigonis. The second Mini to be made, it was a prototype that wasn’t put on the market. The first was used purely for crash testing so it’s no longer around. The late Issigonis, a good friend of Maruyama’s, passed on the historic car to the Japanese man in a show of appreciation for all he had done to help the company. Known as the man who revived the classic Mini when the car was struggling to sell in the 1980s, Maruyama has been collecting, restoring, selling, repairing and, of course, driving the iconic British vehicle for decades.   
His garage, a hidden gem located in a nondescript area of Tokyo, is a must-visit for car lovers visiting Japan’s capital. It boasts historic photographs and a great selection of accessories in addition to all the cars. Walking around the place, you can see his devotion to the Mini."
 

"For ordinary citizens in Japan, getting hold of a Mini wasn’t easy in the beginning. Japan first imported the Mini in the spring of 1960; however, it was still quite difficult for regular folks here to buy cars back then since we’d lost the war and had lots of restrictions imposed on us,“ remembers Maruyama. 

Another issue was the exchange rate as the pound was so high compared to the yen. It was a humble car meant for low-income households that was intentionally designed to be driven and maintained for long periods and at a reasonable price, but in Japan it became a luxury item as it was so expensive here,“ continues Maruyama. Comparatively, Volkswagens that came from Germany were half the price of the Minis since they’d lost the war, too.“   

According to Maruyama, the fact that most people in Japan couldn’t afford the Mini added to its allure for those who could. Owning one in Great Britain was trendy, but in his country it had even more of a status symbol. On top of that, Japanese consumers loved the car’s size and how efficiently it ran. From a personal perspective, Maruyama’s long been attracted to the mechanical construction of the vehicle and its analogue nature, which he describes as “adorable”.

 

"In the early 1980s, as there were only a relatively small number of dedicated fans interested in purchasing Minis, Maruyama developed a strategy to boost interest in the car. He provided the vehicles modified at his company to be used as props in advertisements and television commercials. 

The extra exposure had the desired effect. New fans emerged including many women who felt the Mini was both charming and fashionable. Japan was going through something of a “retro boom” at the time and the Mini had that nostalgic feel to it, reminding people of simpler times. Though evolving to keep up with the modern age, it remained true to its origins. 

Several private Japanese dealers consequently took advantage of the car’s popularity by importing the vehicles themselves. Realising it was missing a trick, British car manufacturer Rover then officially started exporting Minis to Japan in 1985. Though keeping the designs the same, the British factory added more chrome and leather to the automobiles for the Japanese market."

 

"Soon enough, more than half of the Minis manufactured in the U.K. were being shipped to Japan. In the late ‘80s, Rover had considered ceasing production of the car due to poor sales in Europe. The Far East market effectively kept it alive. Without the influence of one man, that probably wouldn’t have been possible. 

Maruyama was key to the car’s success in Japan, and anyone associated with the Mini appreciated his endeavours. That, of course, included John Cooper, with whom he established a close connection."

More here:-

https://www.mini.com...-his-minis.html


Edited by mab01uk, 14 February 2025 - 07:53 PM.


#9 mab01uk

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Posted 14 February 2025 - 07:37 PM

"This video episode brings us to Mini Maruyama in Tokyo, Japan. This one has a longer format than usual, but my goodness, it's the only way to accomodate Maruyama-san's mind blowing collection. We got to nerd out on Shelby Daytona Coupes, classic minis, Minisprints, and much much more. Mini Maruyama is not just a famous mini tuning shop, but is a museum in it's own right."

 


Edited by mab01uk, 14 February 2025 - 07:37 PM.


#10 68+86auto

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Posted 14 February 2025 - 09:07 PM

Not all of the AC systems were fitted in the UK from what I can work out. In the 80s they were fitted in Japan, likely at the dealer by a regular mechanic or similar due to the poor wiring. That's why there's so many different systems on the 80s minis. There were a few modifications required for fitment that would never be done by the factory.

#11 mab01uk

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Posted 14 February 2025 - 11:33 PM

Some pics below of the two air con systems usually seen on Japanese Minis. 

 

Earlier 1980's Japanese fitted air con below on 998cc Minis has Condenser positioned behind the grille and in front of the brake master cylinder/servo. (ignore the yellow arrow)

Fb3fNNP.jpg

 

 

Later 1990's UK factory fitted Air Con below on 1275 SPi Mini Coopers has Condenser+fan mounted in a hole in the LH inner wing.

7VvW3B1.jpg

 

 

In both the Evaporator is under the passenger parcel shelf, control switches and cold air vents in centre of dashboard and compressor is mounted below the larger alternator.


Edited by mab01uk, 14 February 2025 - 11:34 PM.


#12 surfbluejdm

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Posted 14 February 2025 - 11:55 PM

thank you all, very much appreciate the info!  



#13 68+86auto

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Posted 15 February 2025 - 01:09 AM

There were also ones with the vents on the evaporator unit. I think which style was used may have depended on the dealer or availability. For example my 1986 has the vents in the centre of the dash. I've seen a 1988 with the vents on the evaporator unit.

#14 timmy850

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Posted 15 February 2025 - 02:56 AM

Japanese mini owners are a dedicated bunch. In the 90’s they probably made the best small city cars in the world (the Kei class cars). Kei cars were cheaper to register, insure and park in Japan. Minis didn’t fit the kei class rules, so they are a much more expensive car to own and use than a local equivalent

Rover must have loved selling minis to the JDM market as they made a bunch of special editions that weren’t available in the UK

I have an old Hyper Rev magazine full of all the mini tuning parts of the 90’s and 00’s and it’s funny how at that time (pre mass internet) the Japanese mini scene was in a completely different bubble to the UK style. Of course now the JDM mini style has become more accepted across the globe, but I can imagine it would’ve been interesting for UK mini owners to go to a mini show in Japan 90’s/00’s

Edited by timmy850, 15 February 2025 - 02:56 AM.


#15 Bobbins

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Posted 15 February 2025 - 08:52 AM

Nick is spot on, I would presume someone at Rover did a fishing trip to Japan and/or spoke to experts and worked out what Japanese market required, Air Con being the main extra. Which was never offered by Rover for UK minis.

In the U.K. we had SPi Minis and later MPi minis, for reasons I’m not aware/cant remember, the JDM spec is an amalgamation of the two.

Someone more knowledgeable than me will enlighten us!

When the Mpi was launched the JDM Minis were fundamentally modifications to the Mpi, they’re not older Spi cars.

The shell is the Mpi shell with the additional gussets at the rear, it has the late model front panel and subframe to accept the front radiator, and the complete wiring and under-dash fuse box are Mpi albeit with a few wiring mods mostly to accept the air con, plus a JDM specific MEMS ecu.

The front radiator was deleted and reverted back to the side radiator to create space for the air-con compressor and the older Spi injection / throttle body was used, although I’m not clear about the reason for this.

Due to the fitting of air-con the JDM Minis had the rear quarter opening lights deleted in preference for fixed windows.

Edited by Bobbins, 15 February 2025 - 08:52 AM.





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