Dana 30 Question?

Deepblu505

Deepblu505

Member
Joined
Feb 21, 2017
Location
Fayetteville, NC
What do the numbers Stamp on the cover of my Dana 30 Front Diff mean? or where would I go to find out?
 
GotWood said:
Code for gear ratio and expected explosion date.
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@GotWood I ran a high pinion D30 in the front of my old YJ with 4.56s, trussed housing and C's, lock-rite, Nitro chromos and 300M u-joints.. on 35s and 36s with the gear reduction of a 4.3 Atlas behind a 4.0 liter and never blew it up. I did however blow up rear Dana 44 shafts and break driveshaft u-joints. The high pinion 30s really aren't that weak. That one was built to the point where it would've blown a pinion before anything else. I was pretty hard on it. It already had the gears and locker in it when I got the jeep. The cost of the 300M joints and chromo shafts were less than I could've built some other front end for. I realize this will not be everyone's predicament, but nonetheless wanted to share that they aren't as weak as everyone is led to believe.
 
I've tore up the little U-joints in my CJ LPD30, replaced with Superior shafts and big ujoints, all good. It was trussed, widetrack.

Broke the plug welds in a HPD30 tube to center section, think that did a number on the ring/pinion too. ECORS carnage, lots of throttle and sudden deceleration due to bad tree placement. I always ran the big joint shafts with Spicers, only broke a few of those joints.
 
336wheeler said:
@GotWood I ran a high pinion D30 in the front of my old YJ with 4.56s, trussed housing and C's, lock-rite, Nitro chromos and 300M u-joints.. on 35s and 36s with the gear reduction of a 4.3 Atlas behind a 4.0 liter and never blew it up. I did however blow up rear Dana 44 shafts and break driveshaft u-joints. The high pinion 30s really aren't that weak. That one was built to the point where it would've blown a pinion before anything else. I was pretty hard on it. It already had the gears and locker in it when I got the jeep. The cost of the 300M joints and chromo shafts were less than I could've built some other front end for. I realize this will not be everyone's predicament, but nonetheless wanted to share that they aren't as weak as everyone is led to believe.
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I blew up one on a 4cyl yj on 33's. Broke the passenger C off of the tube. Bent 3+ trussed d30 with the ECORS crowd.

The main point of my post was to be a smart ass.
 
I'll also mention I had a non-vac disconnect housing in my jeep; I'm quite sure that made a difference in housing strength.
 
Deepblu505 said:
What do the numbers Stamp on the cover of my Dana 30 Front Diff mean? or where would I go to find out?
Click to expand...

It means you have have put enough work into your dana 30 and stop there before you do something stupid and bling it out :D

Being said I have spent hours beefing mine up and care for it like a first born because everything about a dana 30 housing spells trouble :flipoff2:


Sent from my iPhone using Tapatalk
 
A stock Dana 30 will withstand anything
 

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^Yeah I've seen plenty of balljoints fail on pavement from poor maintenance
 
Jason W. said:
That aint the housing, that is a busted stock shaft, bent ear on shaft pushed ball joints apart.
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Yup. I'd bet dollars to donuts it was a cheap, parts-house u-joint that did it. Shitty u-joint breaks, binds up the axle ears, and pulls the ball joints out of the bores. I've seen it a dozen times.
 
I saw that happen at the bottom of Guard rail on a YJ years ago. That was a bitch to get out. I'm keeping my 30 unless I upgrade to tons. I usually take care of my stuff and have wheeled a ton with one.
 
The level of sarcasm/smartass in this thread is definitely living up to my expectations! We just need some tenderhearted aarp member to make a serious comment, then get all butthurt and start calling us bullies to archive this into nc4x4 20page+ fame
 
CasterTroy said:
The level of sarcasm/smartass in this thread is definitely living up to my expectations! We just need some tenderhearted aarp member to make a serious comment, then get all butthurt and start calling us bullies to archive this into nc4x4 20page+ fame
Click to expand...

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