Who has broken the stock rear LSD?

Lets talk clutches and everything drivetrain related

Who has broken the stock rear LSD?

Postby BADNEWS » Tue Oct 23, 2012 8:37 pm

Who has broken the stock rear LSD? And what else did it ruin?

I currently have the factory rear LSD and am debating between keeping it in and see if/when will it break. Or taking it out to sell it and replace it with a Cusco MZ 1.5 way LSD.

Now if it breaks and it only breaks the diff itself I may consider trying to run it for a year or two. But if when it breaks it ruins the housing it's in and maybe more I'll probably replace it right away.

Pictures of destroyed ones will be appreciated.
Members don't see the above ad. Register now - it's free!
90 ST185 W/ HTZ4094R (6768), 2.2, Fully Built
865AWHP, 591 torque
Hope to have some 1/4 times this summer of 2016!!!
User avatar
BADNEWS
Club Member
 
Posts: 671
Joined: Sun Oct 17, 2004 5:37 pm
Location: Milwaukee, WI

Re: Who has broken the stock rear LSD?

Postby CMS-GT4 » Tue Oct 23, 2012 9:04 pm

Pat has and do has gtfour77. Neither post here a lot so you may want to check their threads.
Coldiron
92 st185 (205 swap) | 03 350Z Track (sold) | 13 Pilot | 17 Mazda3
www.noritoy.com | noritoy.deviantart.com | http://www.alltrac.net/phpBB2/viewtopic.php?f=44&t=19891
User avatar
CMS-GT4
GTSilver Member
 
Posts: 10345
Images: 7
Joined: Mon Aug 09, 2004 9:12 pm
Location: St Louis Area (IL)

1992 Toyota Celica

Re: Who has broken the stock rear LSD?

Postby aus jd 2703 » Tue Oct 23, 2012 9:54 pm

FYI 800+AWHP will Break most parts......
so anything under 500hp and the diff is well maintained you should be fine.
but a clutch type will perform better (more aggressive)
aus jd 2703
Established Member
 
Posts: 1089
Joined: Wed Apr 30, 2008 12:02 am

Re: Who has broken the stock rear LSD?

Postby BADNEWS » Tue Oct 23, 2012 10:35 pm

Well my car should be in the 700+hp on a dynojet area
90 ST185 W/ HTZ4094R (6768), 2.2, Fully Built
865AWHP, 591 torque
Hope to have some 1/4 times this summer of 2016!!!
User avatar
BADNEWS
Club Member
 
Posts: 671
Joined: Sun Oct 17, 2004 5:37 pm
Location: Milwaukee, WI

Re: Who has broken the stock rear LSD?

Postby aus jd 2703 » Tue Oct 23, 2012 10:49 pm

spending that money then a cusco or similar diff should be nothing to you so yes get it imo.
i want one and im planning 300awkw. want may not get me there. :D
aus jd 2703
Established Member
 
Posts: 1089
Joined: Wed Apr 30, 2008 12:02 am

Re: Who has broken the stock rear LSD?

Postby BoostedBlueToyotas » Tue Oct 23, 2012 11:13 pm

esraceing has broken one with moderate mods. Believe he did it in a rally and basically had the rear
of the car raise while under power, spinning the wheel and then came back down and the tire grabbed and that force caused the little gears in the middle to shear
to pieces and it was major damage, ie.. ruined the entire differential. My vote would be for a clutch
unit at your power level.
Tim Plessing
Columbia, MD

1990 ST185 - blue/blue cloth 152K-SOLD
1993 MR2 turbo - blue/black leather 59K TOTALLED/PARTING OUT
2006 Acura TSX - black/black 6 spd
2006 Mini Cooper S JCW Space blue/Silver roof 39k
2006 Mini Cooper JCW Silver/black roof 34k
BoostedBlueToyotas
Established Member
 
Posts: 2663
Joined: Mon Aug 09, 2004 11:33 pm
Location: Columbia, MD

Re: Who has broken the stock rear LSD?

Postby st185-sainz » Wed Oct 24, 2012 11:23 am

on rally 280hp are enough...the torsen unit cannot deal with jumps.

on mine just the small gears broke and I was lucky that nothing got between CWP. It can also damage CWP if the torsen housing breaks.

mario
Mario,
ST205 blue: completely stock
ST185CS (white): white - gravel/snow spec, dog box, TRD clutch, uprated turbo, lightened flywheel, uprated actuator, cold air intake, ST182 cams, walbro pump, batt relocation, forgies, programmable ECU (dyno), ...
User avatar
st185-sainz
Club Member
 
Posts: 191
Joined: Sun Aug 08, 2004 2:28 pm
Location: Austria

Re: Who has broken the stock rear LSD?

Postby BADNEWS » Wed Oct 24, 2012 2:08 pm

st185-sainz wrote:on rally 280hp are enough...the torsen unit cannot deal with jumps.

on mine just the small gears broke and I was lucky that nothing got between CWP. It can also damage CWP if the torsen housing breaks.

mario

What is CWP?
90 ST185 W/ HTZ4094R (6768), 2.2, Fully Built
865AWHP, 591 torque
Hope to have some 1/4 times this summer of 2016!!!
User avatar
BADNEWS
Club Member
 
Posts: 671
Joined: Sun Oct 17, 2004 5:37 pm
Location: Milwaukee, WI

Re: Who has broken the stock rear LSD?

Postby st185-sainz » Wed Oct 24, 2012 2:10 pm

Crown Wheel Pinion
Mario,
ST205 blue: completely stock
ST185CS (white): white - gravel/snow spec, dog box, TRD clutch, uprated turbo, lightened flywheel, uprated actuator, cold air intake, ST182 cams, walbro pump, batt relocation, forgies, programmable ECU (dyno), ...
User avatar
st185-sainz
Club Member
 
Posts: 191
Joined: Sun Aug 08, 2004 2:28 pm
Location: Austria

Re: Who has broken the stock rear LSD?

Postby sleeper » Fri Nov 02, 2012 11:17 am

A few friends have broken them somewhere between 350-450hp. 2 of them took out the trans to, and on the other 2 it was just the diff itself. ( outer housing was fine)

they do NOT like launches with a upgraded clutch. My guess is that it will hold, but you can not do any launches or donuts with it.. So just get a cusco or weld the one you have... no point in building a 700hp car and not beeing able to use it. :D
89 ST165: 9.89/144 daily driver during summer. 711AWHP.
sleeper
Club Member
 
Posts: 888
Joined: Mon Aug 23, 2004 7:56 am
Location: Norway

Re: Who has broken the stock rear LSD?

Postby BADNEWS » Fri Nov 02, 2012 8:42 pm

sleeper wrote:2 of them took out the trans to, and on the other 2 it was just the diff itself


I don't get how it would harm the trans. They are two completely different units. Granted they are connected by the drive shaft but the center diff is designed to slip with a speed difference in the front to the rear.

So what exactly went wrong with their gearboxes when it happened?
90 ST185 W/ HTZ4094R (6768), 2.2, Fully Built
865AWHP, 591 torque
Hope to have some 1/4 times this summer of 2016!!!
User avatar
BADNEWS
Club Member
 
Posts: 671
Joined: Sun Oct 17, 2004 5:37 pm
Location: Milwaukee, WI

Re: Who has broken the stock rear LSD?

Postby 4rsnduction » Fri Nov 02, 2012 11:11 pm

rm2932 wrote:I don't get how it would harm the trans. They are two completely different units. Granted they are connected by the drive shaft but the center diff is designed to slip with a speed difference in the front to the rear.


Imagine the rear diff breaks and locks up while the car is in motion.
The drive shaft and rear wheels have now become stationary but the gearbox and front wheels are spinning plus you may be trying to accelerate.
This type of speed differential would destroy the center diff and burn the hell out of the VC as the fluid would just get really really hot really really fast.
User avatar
4rsnduction
Club Member
 
Posts: 452
Images: 0
Joined: Mon Jan 09, 2012 11:57 pm
Location: Sydney, Australia

Re: Who has broken the stock rear LSD?

Postby RedCelicaTRD » Fri Nov 02, 2012 11:59 pm

I think Trevor is on number six? Both open and LSD have blown. Get a clutch type!!!
Wayne
1990 All Trac
2017 SRT Challenger Hellcat
Grumpy Moderator
RedCelicaTRD
GTFour God
 
Posts: 3947
Joined: Sun Aug 08, 2004 6:58 pm
Location: Syracuse, UT

Re: Who has broken the stock rear LSD?

Postby quieter » Sat Nov 03, 2012 4:03 am

my tranny blew at the same time as my diff
1990 toyota ST185 with st205 goodies (scrapped)
2011 BMW 535xi M pack (daily)

-Simon
User avatar
quieter
Club Member
 
Posts: 469
Joined: Thu Sep 08, 2011 4:16 pm
Location: Montreal

Re: Who has broken the stock rear LSD?

Postby BADNEWS » Tue Nov 06, 2012 12:26 am

Just ordered the Cusco diff from board member Klue of XIII Motorsports. And Mario just received my viscous coupling unit. So things are in motion. I'm excited!
90 ST185 W/ HTZ4094R (6768), 2.2, Fully Built
865AWHP, 591 torque
Hope to have some 1/4 times this summer of 2016!!!
User avatar
BADNEWS
Club Member
 
Posts: 671
Joined: Sun Oct 17, 2004 5:37 pm
Location: Milwaukee, WI

Next

Return to Drivetrain Central

Who is online

Users browsing this forum: No registered users and 1 guest