Topic: Looking for broken t/case 21-spline inputs in dual case setups

[rockcrawlinredneck]

So correct me if I am wrong but these breakage's have nothing to do with 21 or 23 spline correct? It look's like the hole shaft is twisting/shearing the splines them self's still look fine. Unless the 23 spline stuff is a different material they would do the same thing right? Am I missing somthing here? If the splines failed then the splines themself's would be stripped clean.

 Kevin

[Duffil]

the splines themselves aren't necessarily the issue, just the actual size of the shaft. 23 spline being larger than the 21 spline.

[rockcrawlinredneck]

So the shaft it self is larger on the 23 spline? I thought it was just cut with different spline count.

 Kevin

[crawlerdan]

mike, i twisted the splines on mine, output in between reduction housing and the t case.

i have a 4.7 and a 2.28

i replaced it before it broke, but it was VERY twisted

my rig is a 22re with 37s

[MiniSimp]

mike, i twisted the splines on mine, output in between reduction housing and the t case.

i have a 4.7 and a 2.28

i replaced it before it broke, but it was VERY twisted

my rig is a 22re with 37s

[crawlerdan]

sorry buddy, they where on my work computer....and i quit

[ToYocRawleR]

I know of 3 people and myself that have ran the 21 spline in the rear and never had a problem.

[MiniSimp]

Well guys i tore apart my truck tonight to find out the cause of the breakage

Taking the cases out

Pulling the crawl box off of the case


my broken input shaft

[dirtchicken]

I'm guessing that's a 21 spline?