birf length difference

Joined
Oct 4, 2006
Messages
22,438
Location
Seattle, WA
Visit site
Which part of the axle makes using longer birfs ok. Only reason I ask is I have an axle with 4.88 gears and an ARB locker that I am putting in my 92 but I am going to reuse my birfs from the 92. What part from my old axle will I have ot re-use to make this possible.
 
Joined
May 7, 2005
Messages
2,352
Location
South Jordan, UT
Visit site
Unless I am misinterpreting your question, I think you're referring to the later birfs with longer splines--at the drive flange. If you put longer birfs (~1995+??) in your older truck, you just need new drive flanges with longer splines to match. I did this on my 1993.
 
Joined
Oct 4, 2006
Messages
22,438
Location
Seattle, WA
Visit site
Unless I am misinterpreting your question, I think you're referring to the later birfs with longer splines--at the drive flange. If you put longer birfs (~1995+??) in your older truck, you just need new drive flanges with longer splines to match. I did this on my 1993.

Actually i'm putting shorter birfs in a new axle but you answered my question. I thought that is what it was but I needed to make sure... thanks.
 

justdifferentials

Gear & Axle parts for ALL Toyotas new or old...
Joined
Jul 31, 2006
Messages
1,594
Location
Washington
Website
www.justdifferentials.com
91-94 use a shorter outer axle lenght / thinner drive flange. 95-97 use longer shaft / thicker flange. You can use the later axles in older truck, just have to use the newer flanges too. We stock them, because all our birfields are done in the later longer design.


Which part of the axle makes using longer birfs ok. Only reason I ask is I have an axle with 4.88 gears and an ARB locker that I am putting in my 92 but I am going to reuse my birfs from the 92. What part from my old axle will I have ot re-use to make this possible.
 
Joined
May 23, 2004
Messages
885
Location
Chattanooga, TN
Visit site
The one benefit of the shorter birfs is that you can run Aisin Hubs when you convert to part time, rather than Warns or the ones Slee sells... It would be nice if Bobby would make the short version, then we could run cro-mo hub gears as well...
 

Users who are viewing this thread

Top Bottom