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What diff is this?
Posted: Thu Nov 06, 2008 4:22 pm
by bigd
I know this has been covered and I've looked at the pics but can't tell -
It's 3.9 LSD but don't know which one - it was apparently off a US sapporo but the model number also corresponds to an 89 US starion diff so not sure!
Cheers for your help!
Posted: Thu Nov 06, 2008 6:55 pm
by Alspos
Plug hole in the bottom is where the easy to spot difference is. Small ribs around plug = bigger housing.
Posted: Thu Nov 06, 2008 10:03 pm
by MainstreaM
US never got a 3.9, all we got was the 3.54
Posted: Fri Nov 07, 2008 3:03 am
by bigd
Alspos wrote:Plug hole in the bottom is where the easy to spot difference is. Small ribs around plug = bigger housing.
There are ribs around plug - like this?
Posted: Fri Nov 07, 2008 6:06 am
by dirtygalant
The US never got IRS Sapporos - they were all live axle Dave
only Japan and european markets had the IRS in the A164A, and I think they were all 3.545 ratio and would have been small crown wheel with smaller 4 bolt axles.
Posted: Fri Nov 07, 2008 3:22 pm
by bigd
Cheers guys - this gets weirder and weirder. Definitely 3.9 and LSD is it JB style or bigger JD style?
Posted: Fri Nov 07, 2008 4:00 pm
by dirtygalant
if it has the same part number as an 89 spec US starion it would suggest it's the larger "JD" size crownwheel.
Take the back plate off and see I guess.
My original Eterna (Sapporo) diff had a completely different casting to either Starion small or large diff housings around the drain plug, so that would be another giveaway that it's not a Sapporo diff.
Posted: Sat Nov 08, 2008 9:26 am
by Alspos
Looks like a large housing.
