4x4 Related Groups > Tech Talk
Axle Beef-Up vs Ground up Swap/Build
duck454ss:
With my engine build slowly trickling along I've had time for some forward thinking. In my 05 LJ Rubicon i have a pair of low pinion D44 with factory lockers. with the added horsepower (350-400 ish) and the eventual addition of 37+ tires i'll need added strength or a very cautious wheeling habit and light foot.
Beef-Up Option (s)
Internal Sleeves: maintains factory clearances while beefing up the tubes to prevent bending (not even sure my existing tubes are straight acutally) and are reletively cheap.
External Truss/Gussets: Requires fabrication work/prep and you lose clearance above the axle, but you end up with a reinfoced tube and inner C's leaving the weak link to mechanical pieces (gears, shafts, joints).
JanaK4 kit: allows installation of JK ring and pinion in a TJ D44 case. the upgrade here is a 8.8" ring vs 8.0" and a 1.625" pinion shaft vs 1.325".
Locker options: pretty simple in that you hae all the options in the world. personally i like the E-Locker
Axle shafts: good old chromo shafts..... funky upgrade if i was willing to chase it is using a 35 spline ARB or OX locker with custom shafts and early D44 outers and Reid knuckles fro the front axle.
Ground up Swap/Build
Front option:
Currie/Junkyard Ford 9": Allows for a high pinion front axle and all the goodies that come with a 9" (all the benefits of what i listed above). If i went with Currie i'd be able to use my OEM knuckels or go overkill and use 1-Ton knuckles. either way its cool and stronger than OEM. Just comes at a price.....
G2 Core44: all the goodies lited in the beef up section but straight out of the box.....
Rear:
Junkyard 9": Strong.... not sure how plentiful they are these days but its an option.
Fabbed 9": its a light weight 9"...... light weight and bombproof...
Junkyard D60: cheaper than a junkyard 9", heavier than a tank, and tried tested and true. Plus the ability of using D70 R&P with a Jana76 kit.... But strength comes with size (weight) and reduced ground clearance though.
Shaved 14 Bolt: cheaper (so i'm told) than a D60, increased ground clearance, down side is limited locker options and axle upgrades.
Sixty9: How cool are these? looks like a fabbed 9" but the guts of a D60, the ability to run high pinion and a removable third member... not to mention with the use of a Jana76 i can have the strength of a D70, ground clearance and wight savings similar to a fab 9" but the cost that comes with a axles such as this.
the one thing i haven't gone over is budget...... this is because the budget is AS CHEAP AS POSSIBLE while doing it right. i want the best of all worlds, light, strong, good ground clearance, and done as economically as possible.
thoughts? $0.02? ideas on where to find axles? people willing to help build axles?
Vinman:
--- Quote from: duck454ss on July 17, 2016, 07:44:47 PM ---.
Sixty9: How cool are these? looks like a fabbed 9" but the guts of a D60, the ability to run high pinion and a removable third member... not to mention with the use of a Jana76 i can have the strength of a D70, ground clearance and wight savings similar to a fab 9" but the cost that comes with a axles such as this.
--- End quote ---
I think you may have this backwards. I believe the 609 is a 9" centre section with Dana 60 outers.
Bnine:
Traditional currie 9's used 8.8 gears. that is why "Truhi 9" came to be.
609 just refers to any blended combo of d60 and 9" components, but the most basic concept is any 35 spline 9" center section is the starting point for a 609 build.
The fronts are like Vince said, most commonly a 9" center with 60 outers.
There are literally dozens of configurations available with prices that range from 2500$ to 15000$.
Lower the cost, more junkyard and labor involved.
The most affordable, reasonably buildable rear 609 is a standard truhi 3rd member, spooled, or Detroit, fabricated housing of choice, and a currie 35 spline semi float axle kit. I built one of those with a friend years ago for under 2500$, but pricing one today I would think it would come in around 4k.
Front 609's is where it gets incredibly expensive unless you use a lot of junk yard parts. Finding someone to cut off their ford inner knuckles from a front 60 to put on a fabricated housing may be a challenge, but Im sure it can be done.
The little currie center, fabbed housing, custom shafts to use all jeep outer stuff is a decent little axle, but more suited to a stock 4 litre and 35's.
I've built a few for myself, and had a hand in building several custom 609's. If you are ever wanting to shoot the crap and talk axle talk give me a shout. The coffee's always on.
Oh ya. My rear 609 was a 35 spline full float Truhi 9 dual laod bolt, Detroit center with 538's. Superior shafts and rock crusher 60 spindles and hub kit. Custom brakes using wilwood aluminum chev calipers and chev rotors.
Entire setup came in under 300 lbs. About the weight of an 8.8 and had nearly two inches of clearance versus a shaved 14b.
My front used the same center section, spydertrax custom knuckles (45 degree steering), F450 bearings, chev brakes, PSC full hydro, spydertrax chromo shafts and yokes, put together with d60 ctm's. That front diff came under 400lbs. A rock crusher 60 crate differential comes in at nearly 700lbs for comparison sakes. Junkyard 60's about 550lbs before you load em up with stuff.
I finished that rig 10 years ago. Beat the squirt out of it with dual tcases, a mean stroker, 38's and a heavy foot for 4 years before I sold it.
Its had several owners since, and as far as I know, nothing has failed in those diffs.
Start to finish, all the work myself, I spent 10k building those two diffs 10 years ago.
Today, to go all out and do the same, you would probably be just a hair over 20k.
Bnine:
Here is my old build thread with lots of input from some pretty knowledgeable guys. Pretty old tech nowadays, but addresses a lot of what you are talking about. I was at this exact same crossroads as you when I started this thread.
http://www.pirate4x4.com/forum/jeep-hardcore-tech/512789-rock-jock-vs-pro-rock.html
duck454ss:
--- Quote from: Vinman on July 17, 2016, 08:41:45 PM ---I think you may have this backwards. I believe the 609 is a 9" centre section with Dana 60 outers.
--- End quote ---
http://www.jratoffroad.com/products/index.php?act=viewProd&productId=2
its a removable third member that uses D60 carrier and gears.....
Navigation
[0] Message Index
[#] Next page
Go to full version