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December 2011

Dec 16, 2011

A championship car in South America

Congratulations to Speedaddicted,

One of our dealers in South America has won the Central American GT3 Championshipsign01

The vehicle competed in this championship was 1997 Toyota Starlet Glanza V with 4EFTE turbo engine, equipped with an OS Giken twin plate clutch kit and a SuperLock LSD.

The last race was held at Autodromo La Guacima in Costa Rica under shifty weather conditions.  But they were able to complete the race and won the championship for the 2011 season.scissors happy01


Dec 14, 2011

LSD for Porsche

Recently, we are receiving many inquiries regarding LSD's for Porsche models.


I could proudly say that OS Giken makes great products, but is not so great at promoting them... there are many products that are not publicaly announced but existed for awhile.danger

Please accept our sincere apology for not updating our product list fast enough.
(Tell you the truth, non of us could keep up...) coldsweats02

You can contact our authorized distributors near you for any product details even you don't see one for your vehicle.  You will be amazed to find what we offer.

Anyhow, we are currently expanding the LSD lineup for Porsche models.

We have confirmed the fitment of our LSD to the following models:
-930 with 915 transmission (G50 for 930 turbo)
-Post964 models with G50 transmission(includes 993 & 996)
-996 & 997 turbo
-997 Carrera
-Cayman S & Cayman 6spd.
-944 & 968 

The current best seller is LSD's for Cayman.shine

Here's an installation picture of our LSD to a Cayman diff. carrier / transmission case.camera


Cayman has MR (mid engine, rear wheel drive) layout where as 911 has RR (rear engine, rear wheel drive) layout, so the Cayman transmission case is facing the opposite direction compare to 911.

As far as the layout goes (front of the car to the back):
Cayman: Engine → Clutch → Differential → Transmission
911: Transmission → Differential → Clutch → Engine

Here's a picture of a clutch from Cayman.camera


Cayman has push-type clutch where as 911 has pull-type clutch.

Interesting to know, eh?smile

Dec 13, 2011

Evolution X L.S.D.

Tommy has a new update for us.smile

One of the teams participates in the Super Taikyu (endurance race) came to us for the LSD development for their Mitsubishi Lancer Evolution X.
It wasn't a simple task, but our Tommy loves a challenge...

So he built one.good


The team has requested us to build just a front differential that will fit into the RALLIART outer case.


Here's a comparison of the RALLIART and OS Giken front case.
One on the right is the OS made.



There will be 24 larger disks in the LSD to achieve the maximum disc capacity.


Since Tommy has built thus far, why don't we make it available for all the Evo X owners.flair 
So he has designed OS made outer case, and redesigned the front LSD to hold much larger disks to further enhance its performance and durability.


We have installed the LSD to our test car, and it is currently testing for its performance and quality control.

If all goes well, it shouldn't take too long to be added to our product list for you to get your hands on it.car dash

Dec 12, 2011

Time has come

Hello everyone,

Mr. RS has another update for the progress of the new Alfa CRGK.
(you can read the previous updates by clicking on Close Ratio Gear Kit in Categories)book

It seems that he has worked all night for countless nights (taking nice long naps instead...coldsweats01) to complete the prototype model.


It's time for us to send this baby to a new home for all the testing to come.weep


It was such a rough road for the development of this CRGK.

However, Mr. RS is very pleased of his work and satisfied of how it turned out.


It will be sometime before the final production.

We are all crossing our fingers for the best outcome.

If all goes well, then you might see this baby on the market sooner than you think.


For now, it is time for Mr. RS to move on to a new development project, or simply assemble more OS-88 for those who's waiting for their own.good

Dec 03, 2011

A supplementary history class

Thank you all for attending our history class. (Those who haven't, the class is still in session.  Don't make a teacher wait.) smile

It seems many of you are curious about our very first product sold to the public "TC-16" engine.  So we have decided to provide just a little bit more information to satisfy your curiosity.

TC-16 used Nissan L4 cylinder block, and was originally build for Nissan Sunny 110 (Datsun 110).  The engine was also fitted to Nissan Bluebird 1800SSS (Datsun 510), and should be compatible with other L4 engine equipped Nissan models...

Here's comparison table:

  • L18 (4 cylinder): displacement - 1770cc, 115hp/6000rpm, 112lb-ft/4000rpm
  • L20: (6 cylinder): displacement - 1998cc, 130hp/6000rpm, 123lb-ft/4000rpm
  • TC-16 MA2: displacement - 1888cc, 232hp/8500rpm, 150lb-ft/6800rpm Rev limit @ 10,000rpm

FYI, our LSD technician Tommy has revived the TC16 years ago, and it stunned everyone at Historic Automobile Festival in Twin Ring Motegi circuit where a beastly Nissan S30 Z with 2.9L Nissan-Works engine couldn't even pass this 510 sign03


If you want to see this little beast in action, please check the link below.
(The page is all in Japanese, but you can click on links found with each picture to see associated videos.)


On the same note, we are reviving the legendary TC-24 engine as we speak.
First come first served, so order yours now good