Busted parts - Dana 60 & 70

[Hogback Fabrication]

465s will break in other places.... and what is this "FIX" you speak of?

Pretty rare, and I haven't seen a picture of a broken 32 spline one. I've personally seen more than a dozen auto trans case failures and have never seen a 465 go. I've seen one 10 spline adapter fail and several cracked ones, those are somewhat failure prone.

 

[RootBreaker]

465s will break in other places.... and what is this "FIX" you speak of?

im gonna guess you have 10 spline??? that is what i have too... but i hear there is a 30 or 32 spline??? not sure which but i hear it is stronger....

i havent destroyed a 10 spline so no need to upgrade yet!!!!!!!

 

[76zimmer]

Pretty rare, and I haven't seen a picture of a broken 32 spline one. I've personally seen more than a dozen auto trans case failures and have never seen a 465 go. I've seen one 10 spline adapter fail and several cracked ones, those are somewhat failure prone.

Do you think those auto cases were do to mounting issues Chris?

 

[obijuan]

not me, but that was done by my buddy ryan. he WILL break it.

there is a 32 spline 465/205 which is male female so you dont have the drive sleeve.

 

[MNorby]

Do you think those auto cases were do to mounting issues Chris?

The ones I've seen break were due to the crossmembers not being on the same plane and putting everything in a twist.

 

[Hogback Fabrication]

Do you think those auto cases were do to mounting issues Chris?

For most, seems not having a rod that ties the trans and t-case together causes it as does not having mounts up to par. Of course skid plate issues are a big deal and caused a couple.

A few didn't have any real source you could point point to.

 

[Hogback Fabrication]

not me, but that was done by my buddy ryan. he WILL break it.

there is a 32 spline 465/205 which is male female so you dont have the drive sleeve.

And the thing is, that 32 spline output shaft is the same size as both outputs commonly found on the t-case so the t-case outputs should be seeing at least twice the torque as the trans output and those should be the weak point (though you hardly ever see those broken either).

 

[GreenieK30]

While running manuals, I have blown up 2 clutch discs and seen many other people blow discs.
My 1st TH400 case failure was because the front driveline bottomed out when I landed a jump, 2nd I was backing up slowly over a log and the case popped, too much torque. I am running factory style 1986 rubber mounts and the passenger side motor mount and t-case mount have been self destructing every couple runs. Leverage is a bitch. I might make a better passenger side motormount.
My fix for it is a 1/4" & 3/16" fabricated trans pan tied into the 1/4" trans mount I already made and connected to the converter cover that is connected to the motor mounts, basically connecting the whole drivetrain together with steel since cast aluminum is weak.

 

[GreenieK30]

And the thing is, that 32 spline output shaft is the same size as both outputs commonly found on the t-case so the t-case outputs should be seeing at least twice the torque as the trans output and those should be the weak point (though you hardly ever see those broken either).

Like this

 

[boz42]

That is a nice clean break.

 

[cegusman]

For the Dana 60 gears do a search on pirate4x4 for jana 76. There is a kit with grinding that you can fit dana 70 gears into your dana 60 housing.

 

[Hogback Fabrication]

Is this becoming the "show off how good I am at breaking stuff" thread?

 

[obijuan]

It is now. Official.

 

[GreenieK30]

One of my favorites........

 

[folkenheath]

I am running factory style 1986 rubber mounts and the passenger side motor mount and t-case mount have been self destructing every couple runs.

What t-case mount? You mean the solid steel one? Am I missing something here? Does that solid steel plate mount to something else with rubber or poly?

 

[GreenieK30]

I run factory 1986 rubber motor and t-case mounts. I replaced the round adapter with a Klune and the steel plate is part of the new mount, it is bolted to the NP205 and Klune. The factory rubber mount is under the plate.

 

[boz42]

For the Dana 60 gears do a search on pirate4x4 for jana 76. There is a kit with grinding that you can fit dana 70 gears into your dana 60 housing.

I just read that very interesting. Got my wheels turning!