[QUOTE=sakataj;6320001]ok my turn.....someone identify this for me QUOTE]

Wow really sakataj. Its clearly an open stock diff. count the ring and pinion teeth if you want to know the ratio.

 

I don't get it...instead of opening it up and taking pics to determine the gear ratio just bring the car up to 80mph and hold it. If you are at ~3000rpm's you have the 3.73 gearing...if you're at ~2600rpm's you have the 3.26 gearing.

 

I don't get it...instead of opening it up and taking pics to determine the gear ratio just bring the car up to 80mph and hold it. If you are at ~3000rpm's you have the 3.73 gearing...if you're at ~2600rpm's you have the 3.26 gearing.

Well, this is assuming that we are talking about a GS4XX (and the stock tranny).

 

i was kidding i know what it is....i was bored and just going along with the theme....

 

i know you were

 

Hello there, just found your forums and this thread. Can you help me to identify this diff lock? I've been told that it is from US-spec IS300 Lexus, 2001 IIRC. Google told that it should fit to Supra MKIV/ JZS147 Aristo (and GS300 Lexus) automatic's housing but no.

TIA

 

Hold on all the identifying movement for a minute...!!
So the tt auto differentials are all torsen LSD ??

 

How about this one?

its 49 ring
15 pinion

3.26

Previous owner says its a Precision LSD ? came out of a GS4.

Looks like a TRD clutch to me no?

 

Anyone?..........

 

Defiantly a clutch pack style LSD. Looks alot more like a TRD than a precision..

Prob just a JDM 6-spd diff with the TRD LSD upgrade.

Great find tho, hope you got a good deal on it..

TRD




Precision

 

thanks................

 

Or just take it up to 80 mph in 4th (1:1 ratio gear) and look at the tach and move the decimal place over one.

Say 80 mph = 3260 rpm, then you have 3.26's.

Every car I have found if the speedo and tach are calibrated accurately this is spot on.

 

is there any way to see if u got a LSD diff with out opening it? im about to buy an aristo diff but the guy has two and hes not sure either one is LSD
. now i know lsd diff was an option on aristo and some supras but i honestly dont know what to look for if i were to open it up. can anybody help. thanks in advance