Wanted, bj40 rear diff

[garic]

Hey guys got a really noisey rear diff and was wondering if anyone had a good condition one lying around in christchurch. I think mine is semi-floating and has the handbreak on the driveshaft if that helps???

Truck is a 1981 bj40

Thanks

[wopass]

any of the 9" cruiser diffs will bolt in mate fj-bj 40-60-70-80(rear) etc

[garic]

Thats good to know. I heard that the front and rear diffs are the same??? does that mean I could get a 60 series front diff and put it in the rear of my bj40, the reason I ask is due to http://www.trademe.co.nz/Trade-Me-Motor ... 903560.htm

Thanks

[garic]

Also am I right in assuming putting one of these diffs back together correctly (i.e. setting backlash and preloading correctly) is a nightmare??? if I got one in parts or tried to recondition my one?? Thanks

[MNC]

Thats good to know. I heard that the front and rear diffs are the same??? does that mean I could get a 60 series front diff and put it in the rear of my bj40, the reason I ask is due to http://www.trademe.co.nz/Trade-Me-Motor ... 903560.htm

Thanks

60 Series diff will go into a 40 series housing. Pretty easy job - pull axles, remove old head and replace with new then chuck axles back in (well maybe not that easy)

$60 is cheap, buy it

[niblik]

just be careful as to what ratio ya put in it guy..

3.7 up front and 4.1 down back =

[Sadam_Husain]

40 series diffs have a different bolt spacing on the driveshaft flange so you may have to swap your old 40 flange over or re drill the holes if you get a 60, 70, 80 series diff

40 series = square flange
60, 70, 80 = round flange

[garic]

Has anybody been in contact with the guy from this thread http://www.offroadexpress.co.nz/Forums/ ... 37&t=10804 ?? might give that a go aswell. Cheers for the info about the back and rear didnt realise they were different ratios and differences between years. All good information cheers guys =)