A co-worker at the shop just bopught a 1st-gen B16A with a J1 tranny. The J1 did NOT have factory LSD, but this J1 has an LSD in it. He took the the tranny apart and found a clutch-type LSD.

I took pics, but it will be a while before I can scan them and post them up here. So, i'm asking you guys to list as many Japanese manufacturers of after-market LSDs. This LSD was installed in Japan probably by the car's owner, so we're trying to figure out what it COULD be. Please keep in mind it's a cable b-series tranny. Thanks!

I know of Kaaz, Cusco, ATS (for cable trannies though? I don't know...). That's about it without me digging a lot. later.


[Modified by B18C5-EG6, 6:59 PM 12/12/2001]

 

Well actually the Civic SiR in Japan and the Civic Vti in Europe came both with B16A engines and y1 tranny with optional LSD which it did or didn't come with if you didn't check it off on the opt. lists.

You may have this setup if you bought this engine and tranny from overseas or if the owner had gotten it from overseas. Also there are factory LSD's for this tranny floating around as alot of owners replaced them for bigger a better LSDs as power grew under the hood.

Spoon and Mugen both also made LSD's for older model cars but the product lines died as the car got older and less popular. This will probably happen with the DC2's at some point in the near future.

 

cusco

 

But I don't think they had clutch-type.

 

Kaaz, ATS, Cusco, Spoon, and Mugen are the bigger companies that make LSD's for Hondas.

 

I'm pretty sure factory LSDs weren't clutch-type. Helical, right?

 

The same thing happened to me. Mine turned out to be a Kaaz in great condition.

 

The helicial LSD basically came in with the Type R. The SIRII used a optional Clutch or what they called coupling type LSD for the Civic in question.
Here is the honda website on that specific car engine and trans and LSD.
http://www.honda.co.jp/HOT/ModelData...ne_up.html#SiR

 

KAAZ make LSD for SPOON I thought. But yeah ATS, Cusco and KAAZ are big name for sure...

 

Pre-Type R LSDs are all viscous coupling type as has been mentioned.
Type R LSDs are all torque-sensing helical type...

I know Mugen and Kaaz make clutch-type LSDs... good luck finding out!

 

Where can i find info on the viscous coupling Honda LSD?

And BTW: the Civic in question is the older EF Civic LSD, not the EG and such, but that link is kick-***!

 

What kind of info about the LSD?

I believe the JDM model matrix found on the Honda of J website has links to all Honda models ever made, including the EF Civic, so you can search around.

Apparently the viscous LSD is maintenance free (unlike clutch-types which need rebuilding) but the response is lagged. Ofcourse torque-sensing LSDs like Quaiffe and the factory helical LSD don't need rebuilding either.

 

Only the ITR, CTR and EK4(special order) had a helical LSD. All other factory LSD's are Viscous!

Cusco
KAAZ
SPoon
Mugen
ATS
OS Giken (new)
Xebec (helical)
Quaife

I am using an EG6 viscous LSD in my GSR tranny right now and I fuggin' hate it! No where near as responsive as my Mugen and I'll be as happy as a pig in mud after my damn overhaul parts arrive.


I have a Quaife for an EF that is cluttering my floor.... Me no like Helical!!

 

Hi Dee,

You sure visit a lot of forums! Don't you have a job or anything?

What's wrong with the factory helical LSDs and how come you don't use the Quaiffe in your turbo-SiVTEC? It's from a B-engine tranny isn't it... or is it some cable vs. hydraulic issue....

 

Job = play with computers but I have the flu right now so I'm just sitting at home with orange juice and drugs!

The helical diffs do not give enough feedback! I have been using clutch LSD's for 6 years and they give more control and can adjusted to fit a driver's driving style. My clutch LSD also gives better launchs than helical and viscous LSD's. My tranny is an S80 hydro and the cable tranny Quaife is something that I picked up a while back.


[Modified by drealgsr, 4:40 PM 12/19/2001]

 

I haven't used many types of LSDs but I always thought they led to a lot of power being put down when exiting corners such that there would be (sometimes violent)torque-steer. This is my experience with the Type R helical LSDs (1.5 way).

What more feedback do you want???

I guess it means a need to feather the throttle when exiting....

 

Only clutch LSD's have 1way, 1.5way, and 2way engagement action.

1way = clutch discs only engage on accel
1.5way = discs engage fully on accel and partially on decel
2way = disc engage on accel and decel.

There are also different types of cam plates(35/45/55 degree) that control how fast the clutch disc engage. The shallow angle cam plates react faster and cause the diff to be nosier. A lot of people don't know this but KAAZ LSD's can be ordered with cam plates that don't make so much noise.

The initial torque setting on clutch LSD's can also be adjusted to fit the drivers needs. High initial torque equals a very noisy diff because the inside wheel isn't allowed to slip as much as normal during low speed turns. High initial torque settings combined with a shallow cam angle is great for Gymkana courses or any course with very tight 180, 270 or 360 turns.

Drag racers love 1way LSD's over here, 1.5way is the norm for street/circuit peeps and drifters love 2way diffs!!

Beginner and intermediate drivers should stay away from 2 way LSD's because they have a tendency to make FWD cars drift thru turns if you enter too fast. a 2way diff with soft tires equals a lot of bad juju and a busted ride..

The actual traction control of clutch LSD's reacts faster than that of ATBD diffs(Viscous & Helical) because it isn't as dependant on wheel speed. By default the gears/viscous raect slower because of their design.

More feedback = more control!! .... When I lived in Tokyo I went to Ebisu circuit and did a lot of togue runs in North Tokyo with my CTR and ITR buddies. I constantly had higher entry and exit corner speeds than all of them. Because of the 1.5way LSD (and a good suspension) I always braked later than them and with a hell of a lot more control. Two of the guys, CTR & ITR brother duo, bought Spoon and ATS LSD's after driving my car on a togue run one night.

Not everybody wants to deal with rebuilding a diff but I love the control, tune-ability and I don't mind getting my hands dirty!... ... The Clutch lsd/ ATBD debate ranks up there with Chevy/Ford, Boost/NA, Liquor/beer....

All I can say is: get the diff that fits your intended usage, driving skills, mechanical capabilities and wallet size! A crappy OEM viscous diff is better than no diff at all!

Here is some info from the ATS site that I have posted atleast 10 times on H-T.

 

Good info

 

EXCELLENT INFO. Cool pictures.

 

so how does the stock itr lsd work compared to the ones listed above??