lj 70 axles - beefing up all what's inside (1 Viewer)

[Japan4X4]

the ones (BJ70) i recommended fit all the LJ/KZJ 70 series.

Nope.

Post 1990 the 8inch high pinion diff axles need a slightly longer one side and a slightly shorter the other side. Forget which, have some on the shelf and can look at them.

Bobby Long does not make this size.

Drop me a line, I got some on the shelf and can measure them for you.

Wayne is correct that running the 27 spline birfs from the pre-1990 style will work just fine. But your shafts will be a weak point.

 

[Japan4X4]

I know that in this topic is writen too much but before ordering birfs I took out axle shafts from axles that are in my garage and got confused. I counted the spline and it has 30 gaps (I am sure that it's a wrong world but I couldn't find right one in my dictionary). Diameter of spline is 32,5mm, diameter of birf is 91mm without thickening on the edge of spline. With thickening it has 94mm. I hope that it's all data needed to choose right birf, but please help me with this. At the end of this post I would like to underline that axles were taken out of lj70 that seemed to be completly stock.
Thanks for help - I don't know what to do.

Stock shafts all have 30 splines on the diff end. All of them. The side gears in the diff have 30 splines. The 27 that everyone is talking about is the number of splines at the CV end of the shaft. OEM count is 27.

 

[Sloid]

Thanks a lot. To be completely sure I will separate birfileld from axle shaft and count gaps in this spline. I assume that it will turn out that it has 27 cuts and tjis will be end of this problem. axle shafts should be strong enough for 150hp and 1200kgs

 

[Sloid]

You were right. I'll order from longfield 27-spline birf for pre 1990.