Diff Help

[varix]

Im looking to get an LSD into my 88 GX71 Mark II. Im pretty sure it currently is an F Series Diff. Is it possible to fit an F Series altezza lsd diff head strait into this housing? If not what are my options?
Just lsd diffs from same era supras, mark 2s and cressidas?

[mint ke35]

I've been told that if its the same series it will fit. assuming it physically fits in the housing.

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[varix]

Right so I have a GX71 MarkII with a F282 IRS differential. I have just today sourced a F253 nonIRS LSD differential.
What I want to know is will the new F253 bolt strait into my F282 IRS housing? Obviously one being IRS and one not?
Also from what I can tell my current diff has a 4.3 ratio and the new diff has a 4.556 ratio? What difference will this make to drivability?

[postfach]

You can just swap the original crown gear over onto the LSD head to keep the ratio the same. I'm fairly sure the G series heads are interchangeable between IRS and non IRS, so it's probably safe to assume the same goes for F series.

[strx7]

yeah you just put your original crown wheel onto the lsd carrier, along with the side bearings front your original, set it back up in your original head casing/housing and you'r away laughing. if you dont know what your doing with preload etc i'd suggest you consault someone that does

[varix]

Awesome thanks heaps guys. I think Its fair to say I can go ahead and buy it and it shouldnt be to hard to find someone who knows what they are doing to swap the parts between the two diffs.