Just recently bought some 2001 Kia Sportage front diff open centre $330.
Its true they really do just bolt in the series 3 RX7 26 spline axle diff.
(somethings i learned, with the dohc kia sportage, u get 4.77;1 gears, with the sohc kia sportage more likely to come with 4.44;1 gears. u can always count the teeth)
You only need 1 bolt, original rx7 centre has 1 long bolt, which is not on the kia centre, u need another short bolt to match, use one of the originals to find a perfect match.
another area which affected me was the diff flange size was larger on the kia centre, with a 62mm x 62mm bolt pattern. so i had a suped up tailshaft made adding extra cost.
First impressions are great!
Its an old RX4 13b Nikki, 12a electronic dizzi,long tuned primary exhaust. maybe 100bhp not tested.
leaves the line much easier just cruising (original 3.91 were replaced)
got more zest at any rev range
does not feel like it is over revving, its more at its perfect set up.
i am an inner city daily driver and it now sits and behaves better on the local speed limits much better than with the 3.91 when trying to match them limits it would buck and bunnyhop.
This is a must have diff mod for any stock to mild port rotary owner who likes driving through the gears.
