Front LSD - TorSen type for Celica GT4

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Re: Front LSD - TorSen type for Celica GT4

Postby BNZ » Fri Dec 04, 2015 7:36 pm

Who is making disc/clutch type front LSD ?
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Re: Front LSD - TorSen type for Celica GT4

Postby Toyota1968 » Fri Dec 04, 2015 7:47 pm

Sorry ... Don't think discs are available...... Someone on allteac.net trying to do torsen front and centre from kaaz
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Re: Front LSD - TorSen type for Celica GT4

Postby BNZ » Fri Dec 04, 2015 7:50 pm

That topic is from 2012 !
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Re: Front LSD - TorSen type for Celica GT4

Postby Toyota1968 » Fri Dec 04, 2015 7:58 pm

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Re: Front LSD - TorSen type for Celica GT4

Postby alltracman78 » Fri Dec 04, 2015 8:35 pm

Pretty sure that's a clutch/disc type.
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Re: Front LSD - TorSen type for Celica GT4

Postby kevzep » Mon Dec 07, 2015 6:25 pm

alltracman78 wrote:Pretty sure that's a clutch/disc type.
Toyota1968 wrote:Sorry ... Don't think discs are available...... Someone on allteac.net trying to do torsen front and centre from kaaz



Guys, look back at the beginning of this thread and you see this front diff is a Helical (torque sensing) diff.
In other words a torsen.

There are even pictures of it.

KAAZ don't make torsen diffs, they make plate LSD's...

Quaife makes mostly helical (torque sensing) torsen diffs. The also do make some plate LSD's but their range is pretty limited and mostly for motorsport...
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Re: Front LSD - TorSen type for Celica GT4

Postby BNZ » Mon Dec 07, 2015 9:58 pm

The main drawback to plate LSD's is that they ware out and need servicing so bearing in mind that the GT4 has a gearbox that is such a P.I.T.A. to take off and open i decided to go with a TorSen type LSD
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Re: Front LSD - TorSen type for Celica GT4

Postby kevzep » Mon Dec 07, 2015 10:14 pm

BNZ wrote:The main drawback to plate LSD's is that they ware out and need servicing so bearing in mind that the GT4 has a gearbox that is such a P.I.T.A. to take off and open i decided to go with a TorSen type LSD


The performance is what I am after....I don't care about taking the gearbox out, not that difficult in my opinion, I have made a lot of changes to my car so that it is easier to do so...

A plate LSD performs as a 1way 1.5 way or 2 way so the limited slip under power and over-run is controlled, so you have options for what you want you car to do. In a torsen they are only a 1 way which is not suitable for certain applications.

Personally, I do not want my diff's going open on over-run thanks very much....I like stability under braking.

There's more to consider with plate LSD's than just the servicing factor...
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Re: Front LSD - TorSen type for Celica GT4

Postby BNZ » Mon Dec 07, 2015 10:26 pm

You are righ regarding performance but still...for everyone else the gearbox is stil a pain to take off :))
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Re: Front LSD - TorSen type for Celica GT4

Postby kevzep » Mon Dec 07, 2015 11:20 pm

BNZ wrote:You are righ regarding performance but still...for everyone else the gearbox is stil a pain to take off :))


Agreed, it is not the easiest gearbox to get off....
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Re: Front LSD - TorSen type for Celica GT4

Postby Ace » Thu Dec 10, 2015 7:36 pm

yeah, anybody who did this dont want to do this for a long time again :) the plate type diffs also need to be adjusted to suit driving style of each individual. I wonder how people with road cars will make it with front diff - 2 or 3 times gearbox with engine in and out...
Even the splitting gearbox is not easy as you need pullers etc. and its costly when you let a shop do it

I made some research about front and center diffs and for Lancer Evo (models with viscous coupling) recomended setting for tarmac is softer setting of the center diff - they are using stock unit, and hard setting for gravel where can be used ralliart viscous unit or plate type center diff. But is also recomended to replace front and rear first and only after that look at the center.

more informations are here:
http://www.coordsport.com/blog/2012/04/ ... endations/

That leads me to conclusion that plate front and center diff makes the car understeer on the tarmac, so you would need to add plate type rear but still its more gravel oriented setup.
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Re: Front LSD - TorSen type for Celica GT4

Postby alltracman78 » Thu Dec 10, 2015 8:26 pm

kevzep wrote:
alltracman78 wrote:Pretty sure that's a clutch/disc type.
Toyota1968 wrote:Sorry ... Don't think discs are available...... Someone on allteac.net trying to do torsen front and centre from kaaz



Guys, look back at the beginning of this thread and you see this front diff is a Helical (torque sensing) diff.
In other words a torsen.

There are even pictures of it.

KAAZ don't make torsen diffs, they make plate LSD's...

Quaife makes mostly helical (torque sensing) torsen diffs. The also do make some plate LSD's but their range is pretty limited and mostly for motorsport...


My comment is in reference to the link to the thread about the Kaaz clutch LSD.....
Read it in context. :)
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Re: Front LSD - TorSen type for Celica GT4

Postby Toyota1968 » Thu Dec 10, 2015 10:13 pm

For tarmac - overly tight centre diff promotes understeer - absolute fact - for gravel where all wheels spinning a little is preferable to power loss through one or two wheels spinning a lot - tight centre diff is more important - but causes more tyre wear ......= see current arc cars with mechanical diffs v's previous ( and future) arc cars with active diffs.....
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Re: Front LSD - TorSen type for Celica GT4

Postby alltracman78 » Fri Dec 11, 2015 8:45 pm

So, back to the original topic, is this dead in the water?
Or is there anyone still interested in a front TORSEN diff instead of a plate type?
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Re: Front LSD - TorSen type for Celica GT4

Postby Toyota1968 » Fri Dec 11, 2015 11:38 pm

Prefer plate here
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