Miatapower List Archive

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Mail From: (email redacted)

For my money I would get the Torsen. I have a description of the action of
both LSD types on my LSD web page. My links page has the Torsen SAE white
paper too. The Mazdaspeed is a clutch type that has a high bias ratio (~75%,
FYI, The 84-88 RX-7 clutch type LSD is more like 25%.) Kaaz and Cusco also
sell clutch type LSD's for the Miata.

Randy
members.aol.com/solomiata/miataCSP.html

>>Frank Calvillo wrote:

> The recent thread on LSD vs. TCS got me thinking of the Mazdaspeed LSD (see
> www.mossmotors.com/miata/mazdaspeed/htmlpages/msd.html).
>
> Price aside, is the Mazdaspeed LSD better than the Torsen LSD in 94-up
> Miatas? In other words, if you had a base model with no LSD and somebody
> was willing to give you either the Mazdaspeed or the Torsen absolutely
> free, which would you take?
>
> Thanks,
> Frank.

>>I was at that page yesterday, and I don't recall if they list
what type of LSD it is.

>>If the Masdaspeed LSD is not a Torsen, I wonder why.

>>If I was to put any diff into my miata, it would be a Torsen. They
are just more effective for the most part then other types
used with the miata, and they don't wear (although in
race/high HP situations, can fail due to broken teeth)

This read-only message was archived from a public mail list.
Mail From: "Tom Urbanski" <(email redacted)>

Randy's right. My decision to install the Torsen II was made on a couple of factors:

#1. 40% bias ratio.

#2. "Virtually" bullet proof --- not "totally"

#3. Does not need "adjusting" as clutch types do from time to time.

#4. Good Price: Roebuck Mazda has the assembly that replaces the open clutch gears in a '96/'97 at $744
Mazda part #MM03-27-200A

Boy do I hook up now!!!

Bye


On Tue, 30 Mar 1999 10:52:04 EST (email redacted) wrote:
>
>For my money I would get the Torsen. I have a description of the action of
>both LSD types on my LSD web page. My links page has the Torsen SAE white
>paper too. The Mazdaspeed is a clutch type that has a high bias ratio (~75%,
>FYI, The 84-88 RX-7 clutch type LSD is more like 25%.) Kaaz and Cusco also
>sell clutch type LSD's for the Miata.
>
>Randy
>members.aol.com/solomiata/miataCSP.html
>
>>>Frank Calvillo wrote:
>
>> The recent thread on LSD vs. TCS got me thinking of the Mazdaspeed LSD (see
>> www.mossmotors.com/miata/mazdaspeed/htmlpages/msd.html).
>>
>> Price aside, is the Mazdaspeed LSD better than the Torsen LSD in 94-up
>> Miatas? In other words, if you had a base model with no LSD and somebody
>> was willing to give you either the Mazdaspeed or the Torsen absolutely
>> free, which would you take?
>>
>> Thanks,
>> Frank.
>
>>>I was at that page yesterday, and I don't recall if they list
>what type of LSD it is.
>
>>>If the Masdaspeed LSD is not a Torsen, I wonder why.
>
>>>If I was to put any diff into my miata, it would be a Torsen. They
>are just more effective for the most part then other types
>used with the miata, and they don't wear (although in
>race/high HP situations, can fail due to broken teeth)
>

Win a classic 1971 Chevelle SS 454
dunloptire.com/

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This read-only message was archived from a public mail list.
Mail From: "Tom Urbanski" <(email redacted)>

Randy's right. My decision to install the Torsen II was made on a couple of factors:

#1. 40% bias ratio.

#2. "Virtually" bullet proof --- not "totally"

#3. Does not need "adjusting" as clutch types do from time to time.

#4. Good Price: Roebuck Mazda has the assembly that replaces the open clutch gears in a '96/'97 at $744
Mazda part #MM03-27-200A

Boy do I hook up now!!!

Bye


On Tue, 30 Mar 1999 10:52:04 EST (email redacted) wrote:
>
>For my money I would get the Torsen. I have a description of the action of
>both LSD types on my LSD web page. My links page has the Torsen SAE white
>paper too. The Mazdaspeed is a clutch type that has a high bias ratio (~75%,
>FYI, The 84-88 RX-7 clutch type LSD is more like 25%.) Kaaz and Cusco also
>sell clutch type LSD's for the Miata.
>
>Randy
>members.aol.com/solomiata/miataCSP.html
>
>>>Frank Calvillo wrote:
>
>> The recent thread on LSD vs. TCS got me thinking of the Mazdaspeed LSD (see
>> www.mossmotors.com/miata/mazdaspeed/htmlpages/msd.html).
>>
>> Price aside, is the Mazdaspeed LSD better than the Torsen LSD in 94-up
>> Miatas? In other words, if you had a base model with no LSD and somebody
>> was willing to give you either the Mazdaspeed or the Torsen absolutely
>> free, which would you take?
>>
>> Thanks,
>> Frank.
>
>>>I was at that page yesterday, and I don't recall if they list
>what type of LSD it is.
>
>>>If the Masdaspeed LSD is not a Torsen, I wonder why.
>
>>>If I was to put any diff into my miata, it would be a Torsen. They
>are just more effective for the most part then other types
>used with the miata, and they don't wear (although in
>race/high HP situations, can fail due to broken teeth)
>

Tom Urbanski
'97 Classic Red
Sebring Lewinsky

Win a classic 1971 Chevelle SS 454
dunloptire.com/

Signup for your FREE Miata Driver E-Mail account at:
handleit.net

This read-only message was archived from a public mail list.
Mail From: (email redacted)


I thought I read somewhere that while great in most situations the torsen acts
like an open diff if you get NO traction on one wheel.
ie, you come into a tight pin turn, lift the rear inside wheel, and drive stops
to the outside wheel untill the inside spinning wheel comes back onto the
ground.

Is this true? A clutch type definitely provides drive to both wheels, even if
one is in the air...

Fletch.



>For my money I would get the Torsen. I have a description of the action of
>both LSD types on my LSD web page. My links page has the Torsen SAE white
>paper too. The Mazdaspeed is a clutch type that has a high bias ratio (~75%,
>FYI, The 84-88 RX-7 clutch type LSD is more like 25%.) Kaaz and Cusco also
>sell clutch type LSD's for the Miata.
>
>Randy
>members.aol.com/solomiata/miataCSP.html
>
>>>Frank Calvillo wrote:
>
>> The recent thread on LSD vs. TCS got me thinking of the Mazdaspeed LSD (see
>> www.mossmotors.com/miata/mazdaspeed/htmlpages/msd.html).
>>
>> Price aside, is the Mazdaspeed LSD better than the Torsen LSD in 94-up
>> Miatas? In other words, if you had a base model with no LSD and somebody
>> was willing to give you either the Mazdaspeed or the Torsen absolutely
>> free, which would you take?
>>
>> Thanks,
>> Frank.
>
>>>I was at that page yesterday, and I don't recall if they list
>what type of LSD it is.
>
>>>If the Masdaspeed LSD is not a Torsen, I wonder why.
>
>>>If I was to put any diff into my miata, it would be a Torsen. They
>are just more effective for the most part then other types
>used with the miata, and they don't wear (although in
>race/high HP situations, can fail due to broken teeth)

This read-only message was archived from a public mail list.
Mail From: r ullrich <(email redacted)>

At 10:09 01-04-99 +1200, (email redacted) wrote:
>
>
>I thought I read somewhere that while great in most situations the torsen acts
>like an open diff if you get NO traction on one wheel.
>ie, you come into a tight pin turn, lift the rear inside wheel, and drive
stops
>to the outside wheel untill the inside spinning wheel comes back onto the
>ground.
>
>Is this true?
Mine does. (95 r pkg)

This read-only message was archived from a public mail list.
Mail From: (email redacted)

Yep, that's what it says on my LSD web page. A clutch type will defiantly
drive both wheels even if one is in the air, to the limit of the bias ratio.
The downsize is that it could cause a push at power-on corner exits. The
different LSD designs are suited for different situations, a clutch type is
great for drag starts, big track events, or trail climbing in a 4X4 truck.
The Torsen is at home in an autox since it drives the outside wheel (the one
with the most traction) in a slipping condition. If you have the inside rear
wheel in the air in an autox you need more than a LSD, you need to work on
your chassis setup. :-)

-Randy
members.aol.com/solomiata/MiataCSP.html

<< I thought I read somewhere that while great in most situations the torsen
acts
like an open diff if you get NO traction on one wheel.
ie, you come into a tight pin turn, lift the rear inside wheel, and drive
stops
to the outside wheel untill the inside spinning wheel comes back onto the
ground.

>>Is this true? A clutch type definitely provides drive to both wheels,
even if
one is in the air...
>>

This read-only message was archived from a public mail list.
Mail From: Ray Ayala <(email redacted)>

(email redacted)
wrote:
>
> I thought I read somewhere that while great in most situations the torsen acts
> like an open diff if you get NO traction on one wheel.
> ie, you come into a tight pin turn, lift the rear inside wheel, and drive stops
> to the outside wheel untill the inside spinning wheel comes back onto the
> ground.
>
> Is this true?

What you read may not have been clear
enough. If both wheels are in the air
and you turn one by hand, the other may
turn the opposite direction like an open
diff does. But this only happens when
there's no torque being applied by the
drive shaft. - Ray

This read-only message was archived from a public mail list.
Mail From: Wade Witmer <(email redacted)>

If you're lifting your inside rear under acceleration, you've got other
thingss to worry about than which wheel is spinning. (Unless you're
driving a VW or Honda)

A local ITS driver tried a welded, a clutch type, and the Miata torsen
in his 2nd gen RX7 on his way to a local series championship and his
final preference was the torsen. He like the way the torsen handled
from turn-in through mid-corner better than the other types.

FWIW,
- Wade