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Is the HZJ75 front diff the same as HZJ79?
Posted: Thu Aug 18, 2011 7:18 am
by BJMorgo
Does anyone know if the front diff centre housing on an HZJ79 is the same as HZJ75? Is it a straight bolt on swap? Does it have the same 4.111 ratio (37/9)?
Thanks
Paul
Re: Is the HZJ75 front diff the same as HZJ79?
Posted: Thu Aug 18, 2011 7:38 am
by supazuk
79 is coil and 75 is leaf so no straight swap
Re: Is the HZJ75 front diff the same as HZJ79?
Posted: Thu Aug 18, 2011 1:32 pm
by BJMorgo
I meant just the centre differential carrier that contains the ring & pinion gears and pinion seal (not the whole diff assembly).
Regards,
Paul
Re: Is the HZJ75 front diff the same as HZJ79?
Posted: Thu Aug 18, 2011 1:38 pm
by Evski
Nope, 75 Series is much bigger and stronger than the 79 series. I think the 79 has more in common with the 80 series front diff, but not sure. Is it a high pinion front diff?
Re: Is the HZJ75 front diff the same as HZJ79?
Posted: Thu Aug 18, 2011 6:39 pm
by BJMorgo
HZJ75 has the high pinion 8 inch ring gear (smaller diff than the rear) and this is teh same as the 80 series. I know the ARB air locker is the same for both HZJ75 and HZJ79 but I just don't know if the whole carrier is the same.
The pre 1990 HJ75 had the bigger front diff.
Regards,
Paul