#
It is currently Mon Jul 28, 2014 3:59 pm


Post a new topicPost a reply Page 1 of 1   [ 14 posts ]
Author Message
 Post subject: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 12:40 am 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
Hey guys,

So here comes my first rookie question... :oops:
On the VIN plate of my newly acquired TE61 the Trans / Axle code is "T50 / T283".
I've been doing some searching on the net, and I believe that last "3" means that my Trueno has a LSD from factory.
Could anyone please confirm or un-confirm this for me...??

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 3:55 am 
User avatar

Joined: Wed Aug 24, 2011 1:14 am
Posts: 44
code 283 is LSD. :)


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 7:39 am 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
YAY!!! :P
Thx mate! You just made me a very, very happy man...
After all, life is barely worth living without a limited-slip diff!! :wink:

Would that be a 25% LSD then??

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 9:36 am 
User avatar

Joined: Thu Jul 14, 2011 1:42 pm
Posts: 41
Location: Norway
T = 6.7" crown diameter, 28 = 4.3 gear ratio


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 10:17 am 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
Cool.
So 1 : 4.3 gear ratio with a LSD.
But how much does that LSD lock??

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 1:33 pm 
User avatar

Joined: Thu Jul 14, 2011 1:42 pm
Posts: 41
Location: Norway
will depend on wear and tear - how its been used , oil changes, what oil has been used , reshimming ...

no exact figure. Just see how you go :D


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 8:20 pm 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
Not sure I get it...?? :?
Surely it's not a viscous coupling LSD that they used back in the late 70's?
I would have thought in was a clutch type LSD, and they would be built to lock up to a max. percentage. Often a max of 25% seems a good number for a performance orientated road car. Around 40% is getting very driver-orientated. Much more than that and you're really looking at a rally and/or autocross car.
With my old BMW 2002's the first owner could tick a box, pay a bloody fortune and decide whether he wanted a 25% LSD or a 40% LSD...

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 8:25 pm 
User avatar

Joined: Mon May 25, 2009 4:11 am
Posts: 261
Location: Melbourne Australia
It's an old car presumably owned by an enthusiast previously so anything could be in there. Not necessarily what was in it when new.

All sorts of aftermarket options are available nowadays.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Thu Sep 19, 2013 8:33 pm 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
Okay, so just for the sake of arguement. Let's just say that the car still has it's original LSD as fitted from Toyota in 1978, and let's just say that the previous owners have always treated the LSD to correct Hypoid oil and not misused the LSD (HeHe... as if...!?!? :wink: ). Then what kind of lock-up should I expect from the LSD?

Or even, how much lock would the standard "T283" have offered from new?

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Sun Sep 29, 2013 12:18 am 
User avatar

Joined: Sat Sep 28, 2013 6:38 am
Posts: 32
Heya anders, have you tried a search of the toymods.org forums? I remember seeing a breakdown of the various final drive options for the celicas, might have one for the corolla/trueno as well.

If not, you've got some carpark testing to do... ;)

_________________
Image


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Sun Sep 29, 2013 3:43 am 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
Pseudonym wrote:
Heya anders, have you tried a search of the toymods.org forums? I remember seeing a breakdown of the various final drive options for the celicas, might have one for the corolla/trueno as well.

If not, you've got some carpark testing to do... ;)


Have not tried that forum. I'm very new to Nippon classics, so still just starting to find my way... :oops: :wink:
I lifted the rear of my Trueno and spun a wheel. I definitely has a LSD! :P
However would still like to know if the factory LSD would be 25% lock, 40% lock or....??
As much fun as carpark testing is, it's hardly going to answer that question.

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Sun Sep 29, 2013 5:48 am 
User avatar

Joined: Mon May 25, 2009 4:11 am
Posts: 261
Location: Melbourne Australia
http://www.toymods.org.au/forums/faq/35 ... ained.html


You may need to be a member to see this.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Sun Sep 29, 2013 2:06 pm 

Joined: Sun Sep 29, 2013 1:38 pm
Posts: 3
My first post here, sorry if it comes out all lopsided!

Anyway:
If its the LSD I think it is, it will be of the same type that sits in the early AE86 diff`s, basically a weaker type of 2-way LSD meant for some "showroom" driving, your`s has definitely acquired some wear and tear over the years unless already overhauled, chances are though that when you test it on some gravel parking lot you will find you need to get it overhauled, a fresh, broken-in unit should lock both wheels just about instantly when slamming the throttle when you do a tight circle.

My TA40 diff has a T312 rear axle, so the recipè is basically the same (Though I installed a LSD in mine, was previously an open-diff)

Remove the drum-brakes and halfshafts (14mm nuts I think), then the driveshaft bolts that connects the driveshaft to the diff-carrier assembly (Should be 4pcs of 12mm bolts and nuts w/lock rings) then remove the 12mm nuts that holds the diff-carrier in place, put a spill-oil bucket under the whole thing and carefully pry the diff off the axle, should be around 1,4L of oil coming out of there if the last person who changed the oil read any sort of workshop manual, otherwise you`ll have well over 1,5L oil coming out of there.

Get a professional old school Toyota mechanic to disassemble the carrier for you and determine exactly what type of LSD it is, if it`s OEM as suspected, and it`s worn to smithereens, you`ll need new clutches (And deffo new diff-bearings as they need to be split in order to dismantle the differential)
The clutches will cost around 100 euros and the bearings around 150 euros, a new carrier gasket wouldnt hurt either, for the halfshafts just apply silicone-tube.
If it`s correctly assembled (shimmed) a bit more aggressive, you should have a good diff for quite some time.

If ever you plan an upgrade I can recommend Kaaz or Cusco<(TRD/OEM does not have a smooth linear locking curve though they still good enough for aggressive drivers)

The correct oil to use is Castrol Synthrax 75W140 Limited Slip without any additive, when breaking in a overhauled LSD you wanna do tight figure 8`s on a big empty parking lot for 5-10 mins (clutch in the curves, apply drivetrain load when driving straight), then drive around 300-400km`s (Some even do 2500km) before changing the oil.


Top
 Profile  
 
 Post subject: Re: Trans / Axle codes for LSD...??
PostPosted: Wed Oct 02, 2013 8:39 am 
User avatar

Joined: Wed Sep 18, 2013 8:02 pm
Posts: 488
Location: Hong Kong
Thx for the link parrot, but even that does not say how many % the diff locks??
Guess it's just going to be one of lifes many mysteries... :roll:

And thx for you thoughts on restoring a LSD Tore. You sound quite knowledgable on the subject.
However, with my Trueno having a mere km 51,000 on the clock and clearly having lead a pampered life, I honestly don't think there's any need to restore the diff. Driving the car, there's absolutely zilch unwanted sounds from the drivetrain, and with the rear wheels lifted off the ground and spinning one wheel by hand, the other rear wheel spun in the same direction, so clearly the locking function of the LSD is indeed working.

_________________
It's not what you drive - it's how you drive it...

Best Regards,
Anders.

JDM '77 Toyota Trueno Sprinter 1600GT (TE61)
+ a handful of classic BMW's from the 60's and 70's.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post a new topicPost a reply Page 1 of 1   [ 14 posts ]


Who is online

Users browsing this forum: No registered users and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  


Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
610nm Style by Daniel St. Jules of Gamexe.net