What is the difference between the TCD LSD for JZA80 cars and the Super Lock?

Both share the OS Giken pressure ring mechanism. The TCD LSD for JZA80 cars adds oil holes and channels to the friction discs so they stay wet, which OS Giken says gives smoother, quieter operation with less of the shock typical of a mechanical LSD. The standard Super Lock, TY031-HA, costs less.

Is TCD a good choice for an automatic Supra?

Yes. Automatic Supras and Soarers are often driven as grand tourers, where the chatter and clunk of a conventional clutch-type LSD is most noticeable. TCD keeps the locking performance while staying smoother in daily driving, which suits that kind of car.

Does TCD give up traction compared with the Super Lock?

OS Giken states that TCD keeps the high traction performance and response speed of the Super Lock. The difference is in how smoothly it moves between open and locked, not in how much it locks under power. Drive out of a corner stays strong.

Will it fit a six-speed Supra Turbo?

Not if the car has the factory 9-inch rear differential that Toyota fitted to the six-speed Supra Turbo. This TCD is for the 8.5-inch axle. Bulletproof Automotive can help confirm which axle a particular car carries before ordering. Ring gear size is the quickest check.

Can the characteristics be adjusted?

Yes. OS Giken notes that the cam angle, which sets how the differential behaves on and off the throttle, can be chosen freely on TCD units, and the company rebuilds and retunes its differentials in-house as a car changes. Ask before ordering if a custom setting is wanted.

Description

Additional Info

Shipping policy

BP PRICING DIFFERENCE

Reviews

Product Inquiry

Description

OS Giken TCD LSD for JZA80 Toyota Supra 8.5in and JZZ30 Soarer Automatic

OS Giken’s TCD LSD for JZA80 Toyota Supra 8.5in and JZZ30 Soarer Automatic is the refined version of the Super Lock for the Mk4 Supras and automatic Soarers built with the 8.5-inch rear differential. Many of these cars are grand tourers first, automatic Supras and Soarers driven long distances, and a conventional clutch-type LSD can clunk and chatter in that use. TCD answers with oil-fed friction discs that keep their faces wet, so the diff locks firmly under power yet stays quiet and smooth around town. Pick the TCD for a powerful 2JZ car that is driven daily; the standard Super Lock costs less for a dedicated track car.

How TCD Differs

TCD keeps the Super Lock mechanism but adds oil holes and channels to the friction discs, so the disc faces stay wet at all times. OS Giken says this lets the differential move smoothly between open and locked states, cutting the noise and shock typical of a mechanical LSD while keeping the Super Lock’s traction and response.

Features

TCD friction discs with oil holes and channels for constant lubrication
Smooth, quiet transitions between open and locked
Super Lock pressure ring mechanism for traction and response
Fits 8.5-inch JZA80 axles and the automatic JZZ30 Soarer
Billet case and raw-forged gears
Cam angle and lock characteristics adjustable by OS Giken

Applications

Toyota Supra: JZA80 | 1993-1998 | 3.0L 2JZ-GE / 2JZ-GTE, 8.5-inch rear differential
Toyota Soarer: JZZ30 | 1991-2000 | automatic

Notes

The TCD LSD for JZA80 cars in this listing fits the 8.5-inch differential; the standard Super Lock for the same cars is part number TY031-HA
Supra Turbo six-speed cars with the 9-inch differential are not covered by this part
Installation labor is not included

Frequently Asked Questions

What is the difference between the TCD LSD for JZA80 cars and the Super Lock? Both share the OS Giken pressure ring mechanism. The TCD LSD for JZA80 cars adds oil holes and channels to the friction discs so they stay wet, which OS Giken says gives smoother, quieter operation with less of the shock typical of a mechanical LSD. The standard Super Lock, TY031-HA, costs less.
Is TCD a good choice for an automatic Supra? Yes. Automatic Supras and Soarers are often driven as grand tourers, where the chatter and clunk of a conventional clutch-type LSD is most noticeable. TCD keeps the locking performance while staying smoother in daily driving, which suits that kind of car.
Does TCD give up traction compared with the Super Lock? OS Giken states that TCD keeps the high traction performance and response speed of the Super Lock. The difference is in how smoothly it moves between open and locked, not in how much it locks under power. Drive out of a corner stays strong.
Will it fit a six-speed Supra Turbo? Not if the car has the factory 9-inch rear differential that Toyota fitted to the six-speed Supra Turbo. This TCD is for the 8.5-inch axle. Bulletproof Automotive can help confirm which axle a particular car carries before ordering. Ring gear size is the quickest check.
Can the characteristics be adjusted? Yes. OS Giken notes that the cam angle, which sets how the differential behaves on and off the throttle, can be chosen freely on TCD units, and the company rebuilds and retunes its differentials in-house as a car changes. Ask before ordering if a custom setting is wanted.

About OS Giken

OS Giken was founded in Okayama, Japan in 1973 by Masaharu Okazaki. It built the TC16 and TC24-B1 DOHC cylinder heads for Nissan L-series engines, began making multi-plate racing clutches in 1982 and started supplying OEM limited-slip differentials in 1983. Development of the Super Lock LSD began in 1997, and of the OS-88 sequential gearbox for the Skyline GT-R in 1998.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

Reviews

There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.

Product Inquiry

First Name (*required)

Last Name (*required)

Your E-Mail (*required)

Telephone Number (*required)

Country (*required)

Vehicle Year / Make / Model (*required)

Please Explain What do you want to do with your vehicle

Additional Information (optional)

I agree to the terms & conditions and privacy policy and to have Bulletproof Automotive LLC contact me for promotion, marketing and other purposes via email, phone or SMS message.

OS Giken TCD LSD for JZA80 Toyota Supra 8.5in and JZZ30 Soarer Automatic [TY031-HC]

Guaranteed Safe Checkout

OS Giken TCD LSD for JZA80 Toyota Supra 8.5in and JZZ30 Soarer Automatic

How TCD Differs

Features

Applications

Notes

Frequently Asked Questions

About OS Giken

Reviews