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Jeep Grand Cherokee Dana 30 Front Axle - Project Ain't It Grander

Part 5: Strength And Durability For The Dana 30 Front Axle

Photography by Willie Worthy

We definitely needed to improve the steering linkage to maintain good highway manners as well as the strength. Tera- flex offers a crossover-steering setup for the TJs that consists of a new right-hand steering knuckle that offered a provision for crossover steering, a very large hexshaped tie rod and drag link, and some really trick heavy-duty tie-rod ends. These tie-rod ends offer an offset that moves the tie rod outward so that you can still have full steering left and right without the tie rod hitting the diff cover. We also used them on the drag link to provide proper clearance for our track bar.

  • 12. This is how we reinforced the much taller axle track-bar mount to the axle disconnect housing. Also note the JKS pin-bar-eliminator lower shock mounts and the JKS aluminum bumpstop extension inside the coil spring.
    12. This is how we reinforced the much taller axle track-bar mount to the axle disconnect
  • 13. This photo shows you a lot of great stuff. You can see the new track-bar mount that also serves as a steering damper mount, and how we reinforced it. Note how the steering drag link and the track bar are exactly parallel to each other. The componentsare part of Teraflex's "high steer" kit. We had tocut off the right-side factory sway-bar mount and slightly modify the mount supplied by Teraflex. We have plans to make a couple more changes here in the future.
    13. This photo shows you a lot of great stuff. You can see the new track-bar mount that al
  • 14. Again, more great stuff: The Teraflex steering knuckle, the Stainless Steel brakes, the JKS adjustable bumpstops within Rusty's coil springs, the modified sway-bar mount, and the Teraflex tie rod and drag link.
    14. Again, more great stuff: The Teraflex steering knuckle, the Stainless Steel brakes, th

To control body motion, we went with one of Addco's 11/8-inch replacement sway bars, and modified a Teraflex TJ mount for the right side while using the factory axle mount on the left. The sway bar worked great, both on and off the trail, and we don't disconnect it unless we want maximum articulation. However, the added stiffness, along with the additional wheel travel the T&T suspension offered, bent the flat-bar connecting links into pretzel shapes. To solve it, we used the same Tera- flex ends but welded them to a section of 3/4-inch tubing. Teraflex offers some great adjustable tubular units that we will replace ours with one of these days.

During our "testing," the original power-steering pump decided it had had enough of a workout and the front seal failed. We also had noticed quite a bit of looseness in the pitman shaft, which contributed to not exactly positive steering. We replaced the steering pump with a local parts-store replacement but really wanted something a bit better than a mass-produced rebuilt steering box. We had been running some PSC components on one of our other Jeeps and were really impressed with the attention to detail and the quality of workmanship, as well as the support we had received. So we ordered up one of PSC's SG-621MR steering boxes. This is a precision rebuild with the added advantage of having the ports available to connect to a cylinder assist if we should so desire in the future. We can't believe the difference the PSC box made not only in road feel but in the lack of turning effort.

  • 15. Our factory steering box got replaced with this great precision-built unit from PSC that also includes auxiliary ports for the power ram we plan to install in the future.
    15. Our factory steering box got replaced with this great precision-built unit from PSC th
  • 16. We plan to use ARB's new nodular-iron differential cover which is shown compared to a stock stamped cover. Not only does it add strength to the housing,but get this, it has a dipstick and drain plug.
    16. We plan to use ARB's new nodular-iron differential cover which is shown compared to a
  • 17. Addco was again our choice for a front sway bar. Note the added beef in the mounting ends and the nice gold anodized coating.
    17. Addco was again our choice for a front sway bar. Note the added beef in the mounting e

We wanted to make our Dana 30 as strong as possible and we feel we accomplished it. One thing that did bother us a bit was the housing strength. We've seen broken ring-and-pinion gears that we attribute to axlehousing flex, allowing the ring gear to pull away from the pinion. We explored several options and at first used Superlift's Rock Ring. It's a great product, and the one on the rear (as well as the ones on the front and rear of our other Jeep) have proven themselves many times over. We had seen a prototype nodular-iron cover built by ARB some time ago that had two unique crossbraces as well as a magnetic drain plug-and get this, a dipstick to check the lube level. We had to have one, and when Jim Jackson, president of ARB USA, told us they were available, we ordered one up. Yep, we are impressed with it. It's the next thing to go on.

Overall, we are pretty darn happy how the front end turned out, even though it took a lot of modifications, a lot oftime, and a bit more money than we had planned on. Next time, we'll discuss a few things that we did to finish up the project and make Ain't It Grander a lot more trailfriendly and comfortable.

SOURCES
Alloy USA Rancho
500 N. Field Dr.
Dept. 4WDSU
Lake Forest
IL  60045
Motive Gear
1001 W. Exchange Ave.
Chicago
IL  60609
Gen-Right Off Road
8-05/-584-8635
genright.com
Rusty's Off Road Stainless Steel Brakes
Clarence
NY
8-00/-448-7722
ssbrakes.com
ARB USA
800-761-8192
www.arbusa.com
MasterCraft Racing Products
www.mastercraftseats.com
ADDCO Superlift
superlift.com
K&N Engineering
1455 Citrus Ave.
Riverside
CA  92502
800-858-3333
www.knfilters.com
Tomken
36580 U.S. Hwy. 24 North
Buena Vista
CO  81211
T&T Customs Enersys
www.odysseyfactory.com
JKS Manufacturing
www.jksmfg.com
Olympic 4x4 Products
Mickey Thompson Performance Tires and Wheels
1900 Compton Ave., Suite 101, Dept. GMHTP
Corona
CA  92881
Eaton/Detroit Locker
www.eatonperformance.com
PSC Motorsports
www.pscmotorsports.com
J.E. Reel Drive Line Specialists
www.reeldriveline.com
Quadratec
8-00/-745-2348
quadratec.com
Tera Manufacturing
Superior Axle
www.superioraxle.com
Crown Automotive
7-81/-826-6200
www.crownautoparts.com
Nifty Products/Lund International Bilstein
14102 Stowe Dr.
Poway
CA  92064
858-386-5900
www.bilstein.com
Powertank
N/A
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