[Sloid]

My axles are post 1990 so I'll order FJ/PZ/HZ/KZ/LJ, thanks for help

[crushers]

humm, turns out they make the birfs but not the inners for the post 1990.
they make the inners and outers for the pre 1990.

[Sloid]

You mean Lngfield axles by "they"? I have pre 1990 axles as well but would like to stay with post ones. Can you reccomend any other factory that produces inners and outers?

[crushers]

long field...
ummm, no but the factory inners are plenty strong for your application.
long field does make the outter birfs for these...

rumor has it that they will be making the inners in the future but no time frame yet....

[Sloid]

Thanks for hepling me My last question is if birfs are same in both lj? As I understand they are 27-spline, so I will order two 27-spline Chromoly Birfs from Longfield official site and stay with stock inners and outers.

[crushers]

that is correct, 27 spline for post 1990 (all small diffed front end units)

[Sloid]

That's great - I'll be able to use it in pre 1990 axle if something breaks down (for example housing).

[Sloid]

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.

[Sloid]

I am in the point where I don't know what to do. Guys from longfield didn't reply:/

[crushers]

okay, i measured the old style, new style and long field birfs for you
the inner and outter spline counts are the same.
the over all diameter of all three are the same
the flat to flat are 84mm for long field and the old style
the flat to flat on the 1990+ is 89 mm

so what i would do is order the older birfs and install. but then that is me.

[Japan4X4]

Originally Posted by crushers

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]

Originally Posted by Sloid

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.