Lost all gear oil today, 1991 Testarossa

You’re not trying to duplicate space shuttle re-entry temperatures. 250 F should do the trick.

 

Admire ur resilience! U got this!
Have u considered any local shop at this stage to do it for you?


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Sorry to say this, but a couple of observations:

that much gear oil does not leak out that fast unless there has been a structural failure in the case. It is gear oil if you small sulfur

next, that Is most likely the diff housing welds have failed, which results in side forces the transaxle case can not sustain, and it cracks. This course of events can occur without any noise it seems.

I have a 91 and replaced the carrier at 8k miles as a prevantative measure Some years ago based on some part what I have learned on this forum.

do not drive the car any further. Take a close look at the complete case.

and last, When you get this sorted, only use a GL5 Level lubricant, preferably synthetic . GL4 Levels do not have the shear strength needed for a hypoid gear set

 

Only missed 26 pages !

 

I mean celsius, also have written C
250 ° fahrenheit is about 120 °C and I think that this will be not enough. may be it will work but also may be the bearing will cool down fats before it is completly on. so better a little warmer.

that would be then about 3.300 ° C

 

only the internals all all what is on the photos?

 

when you have no play anymore and the diff is rotating easy you may go 1-2/100 mm less shim tickness. when you have a spring scale you may fasten this to a thin string what you put around at the diameter of the diff where the crown comes later and you may need then between 0.25 and 0,30 kg to turn the diff, so turning, not starting to turn because this needs more weight. 1/100 mm is about 0,15 kg. see that the diff will turn always the same, so not sometimes harder and sometimes less. also put oil on the bearings when testing.
if you would have the special tool from ferrari then you need 0,18 - 0,20 kg.
in the video it looks as if you already have some preload? when there is no preload and also no play then you kick the diff and it will turn alone a little.
those feeler gauge shims are 1,65 mm? so positioned at 180°? then try first with 1,63 mm. but I think as you turn the diff that you have already some preload because it looks as if you use some force to turn?

ripper differential? never heard about and also cannot find when I google

 

there you have already preload

this looks good, but sound not good. you put oil on? if yes and it sounds so then you also have some play? you have a possibility to measure the axial play? you see it is a fact of 1/100 mm

you mean 0,22 kg I think and not 22 kg. and yes, 1,68 mm seems ok

 

Coming in from left field here ..but would it be accurate to use one of those battery torque gauges from harbor freight and measure torque on axle nut .. 17 in pounds or so .. not sure if I got measurement correct ..but directionally I think you get where I am going ..maybe someone can give us some benchmark measures

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