Originally Posted by Bigdank
whats the reasoning behind doing SAS? whats the matter with the previous one?
Big tires + lift + abuse off and on road = an ongoing trail of repairs and adjustments
In my case, besides the strength, it's a drive axle and I'm converting to a 4x4.
Ranger IFS is inherently weak in some ways. Stock vehicles tend to go through ball joints faster than they should. In lifted applications add to that increasing problems with tie rod ends (inner and outer) steering racks and wheel bearings.
4x4 Rangers often suffer form 1/2 shaft failures under any hard wheeling. Some guys finesse them pretty well though -- but still they break easier than straight axle rigs.
IFS requires a lot of work to get the compliance that a solid axle provides, and even with that work is generally weaker.
IFS was put on because it's overall superior on streets and cheaper to produce. However, a properly built solid axle front end is quite mannerly. Drive a Cherokee or Grand Cherokee or TJ Jeep and they are pretty smooth.
The main reason continues to be: strength and terrain compliance.