LSD Swap!

Justin

Speakers?
Mar 31, 2005
1,699
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Spokane, Wa
I'm going to swap my LSD tonight and had a few questions...

one: when I'm filling the LSD up, how do I tell when full? do I just sit the diff level and fill till its to the fill hole?

two: just so I can be prepared... when I disconnect the halfshafts, will i have to disconnect them from the wheel as well? or will they just get out of the way? obviously i'll find this out when I do it, like i said, i just wanna know what to expect.
 
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Mr.PFloyd

I am the Super Devil
Jun 22, 2005
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Mississauga, Ontario
Justin said:
I'm going to swap my LSD tonight and had a few questions...

one: when I'm filling the LSD up, how do I tell when full? do I just sit the diff level and fill till its to the fill hole?

two: just so I can be prepared... when I disconnect the halfshafts, will i have to disconnect them from the wheel as well? or will they just get out of the way? obviously i'll find this out when I do it, like i said, i just wanna know what to expect.
yeah when i fileld mine, i measure approx and its not 1.4 litres that goes in, its 1.6 :p. yeah it just started drippign asmall amount after and then i called it a day. btw u need a pump :D
 

jdub

Official SM Expert: Motor Oil, Lubricants & Fil
SM Expert
Feb 10, 2006
10,730
1
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Valley of the Sun
I didn't have to remove my half shafts...was able to get some wire and hold them up out of the way. It is difficult to get them back down over the differential output shaft studs...kinda had to work it a bit. Since this is a Supra...your milage may vary :naughty:
 

Justin

Speakers?
Mar 31, 2005
1,699
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Spokane, Wa
CryoSlash said:
yeah when i fileld mine, i measure approx and its not 1.4 litres that goes in, its 1.6 :p. yeah it just started drippign asmall amount after and then i called it a day. btw u need a pump :D


eh, the diff is out right now, i'll just fill it then install it :)
 

i_zombi

DRAGULA
Aug 15, 2006
27
0
0
Pittsburgh PA
I am in the middle of swapping out my rear diff. 1 of the two bolts that go straight up through the ears on the diff just keeps spinning. Is there a nut welded up in there or something? anyone have this problem?
I'd appreciate any help.
Thanks, Dan
 

shaeff

Kurt is FTMFW x2!!!!
Staff member
Super Moderator
Mar 30, 2005
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^ i think that dr.jonez had a problem like that a long time ago...

-shaeff
 

suprahero

naughty by nature
Staff member
Aug 26, 2005
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You could try to search under threads started by Dr.Jonez, or do a search for lsd swap.................lol and good luck.
 

Squid699

Manic Mechanic
Mar 30, 2005
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Chesapeake, VA
Funny, I just did mine on sunday. When I dropped my diff I just let the half shafts come down with the diff and took them off when they got fairly slack. I then let them rest down, slid in the new diff, put the half shafts on (with the jack in the down position) and jacked it into place. This alleviates a lot of the tension on the half shafts and makes re-installation easier.
 

pimptrizkit

thread killer
Dec 22, 2005
1,572
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vancouver Wa
ee if you can feel the back side of the bolt thats spinning.

trin to et a better description of where it's at..


i have had luck before tightening stuff back up, then using an air inpact to zip them off..

i would get some liquid wrench and soak that sucker (spray) and work it, that should work if there is still some drag on the bolt that's spinning..
 

shaeff

Kurt is FTMFW x2!!!!
Staff member
Super Moderator
Mar 30, 2005
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i <3 my 4.30

try searching on supraforums for dr. jonez's post. it was way before this place was hacked some time ago.

-shaeff
 

chriso

Supranian
Apr 5, 2005
917
0
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Bay Area, CA
So you guys like the 4.30???? I thought the 3.91 was the one to get. I use my car for commuting so I guess the 3.91 or, even better is the 3.73 are best for me.
 

Squid699

Manic Mechanic
Mar 30, 2005
595
0
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Chesapeake, VA
it really depends on what you want. My Supra is my fun car. I don't need it to be uber-efficient as I don't drive it unless I want to. I have my beater for everyday travel. The 3.91 is a good intermediary diff for performance and decent fuel economy. I was getting 20-24mpg highway and I was running really rich. The 3.73 would make that even better, but you lose some low-end torque. The 4.30 is all torque, all the time, but you lose the top end and that fuel efficiency. Decide for yourself.
 

Big Wang Bandit

You Can't Quit Me Baby
Feb 21, 2006
7,551
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San Ramon, CA - 925!
I really want a 3.91. I have a 4.30LSD and its just way to rev happy for me on the highway. Even tho it helps me get off the line I would rather have sothing to keep the revs down
 

tissimo

Stock is boring :(
Apr 5, 2005
4,238
0
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Melbourne, FL
4.30 is too short.. even for a high revving 7m (going to 6500).. lol.. thats my opinion... having to shift into 5th in the 1/4 sucks...