LSD Identification

[WRXONP]

ive just done alot of research on this forum and other forums plus google about how to identify the LSDs apart from each other...

heres some pics of my LSD / differential

i havent seen any sound identification so far...everyone seems to be guessing...

one guys says this could be a quife LSD and one guy said it could be a AP SURTRAC LSD??

can anyone confirm please? it certainly doesnt look like a viscus...

so in saying that i just got a 1litre bottle of 80w90 i think it is and thats going to be no good if its mechanical ... so anyone want the oil LOL

[D-Style]

Not the best of pics. Does look alot like a KAAZ LSD....

[Guest]

chuck it in and do some hellies.then youl know

[Tony]

To me it doesnt look like a mechanical plate diff. The fact that its a full sealed unit (as far as I can tell from the pics) suggests its a viscous. In fact in looks nearly identical to a V7 STI suretrac that I had laying around...

Can the centre be pulled apart at all? Are there any holes in the outer casing which you can see into the centre?

[WRXONP]

I did my own research ha ha . It sure is a suretrac from a ver 5-6 . . . Its not viscus. They have spider gears the suretrac doesnt . . Its not clutch pack either . . It has cam followers inside it . . . .

[Lynx]

What oil should they be running? If would happen if you put wrong oil in? Cheers

[DRFVDR]

All cam based LSD's are ok running just normal Diff oil ( 80w90 )

Viscous Based LSD's the same

Clutch type LSD's need a specific LSD oil

[Lynx]

WRXONP said its no good if its mechanical? Cheers

[WRXONP]

the people who installed my diff thought it was viscous . they put normal oil in . it had little lsd action. removed and cleaned and re fitted with proper lsd oil and turning it you could feel it doing its thing and working in . . . now its real tight lsd action . . its a sure track cam follower type lsd

[WRXONP]

which is a mechanical lsd lol

[Lynx]

Oh yup. You reckon i should try that with mine? Take it apart and clean it and put some proper oil in? You reckon i have the same type of lsd. If so what kind of oil did u use? Cheers dude

[WRXONP]

penrite limslip.its blue.the only thing that sucks with a subaru lsd is you don't know what you have until you remove it and open it up

[Lynx]

Oh yup, Im keen to open it up to see. Hard to open up the case?

[Lynx]

And alsom what should i be looking at once its opened up? I have no clue lol. Cheers

[WRXONP]

remove Rear diff and drain oil then the back cover comes off 6 or 8 bolts can't quite remember. you'll see it what type it is . i removed my crown Wheel lsd assembly . you just remote side plates where the cvs go in then assembly comes out. but there are shims behind the plates which set the back lash . remember to keep these on the same side they were removed from or you will fark your dif

[WRXONP]

if you see spider gears you have a viscous diff. if you see a shiney steel cylinder then its suretrac

[WRXONP]

plus clutch plate mechanicals look different. you need to look at a pic

[Lynx]

 WRXONP said:

remove Rear diff and drain oil then the back cover comes off 6 or 8 bolts can't quite remember. you'll see it what type it is . i removed my crown Wheel lsd assembly . you just remote side plates where the cvs go in then assembly comes out. but there are shims behind the plates which set the back lash . remember to keep these on the same side they were removed from or you will fark your dif

Thanks for the help, once out what should i be looking out for? Not sure how to tell between or even if its lsd or not lol

[WRXONP]

it will be a lsd . could be viscous or mechanical clutch or suretrac . you need to see pics really and i can't copy and paste sorry maybe some one else could paste links to pics ?