BlueCruiser84
SILVER Star
Hello,
I recently did an SAS on my 1989 4runner and kept it pretty low. I used RUFs, Allpro rear springs (3” I think), and new 5100 shocks. Rear shocks are mounted factory style, not in a /\ formation.
I rode around all summer with a soft top or no top and the thing drives really well. It’s soft, but feels planted. Not sure a tall, skinny, 30+ yr old vehicle built for off-road can be expected to perform much better on-road.
Now that I’ve put the hardtop on and put a little weight in the back it is VERY soft. Bridge abutments or RR crossings are fine - really smooth. It’s the uneven pavement you get on tertiary roads that are “uncomfortable”. Going straight at 35-45 mph (posted speed limit) nets a very unstable feel - rocking, swaying, kinda like a boat in choppy water. It corners great at “all” speeds.
My question is do I address this by tweaking the spring rate or adding stiffer shocks? Or neither? Is a swaybar the answer? I’m not an overlander, but I put a spare and some tools in the back when I go wheeling.
I’ve not had much experience tweaking leaf springs trucks. I’d like to get started in the right direction. Again, I know what I drive - I’m not expecting a sports car, but the gentle sway shouldn’t be this noticeable (I think…?).
As you can see, it’s not tall as SAS trucks go.
I recently did an SAS on my 1989 4runner and kept it pretty low. I used RUFs, Allpro rear springs (3” I think), and new 5100 shocks. Rear shocks are mounted factory style, not in a /\ formation.
I rode around all summer with a soft top or no top and the thing drives really well. It’s soft, but feels planted. Not sure a tall, skinny, 30+ yr old vehicle built for off-road can be expected to perform much better on-road.
Now that I’ve put the hardtop on and put a little weight in the back it is VERY soft. Bridge abutments or RR crossings are fine - really smooth. It’s the uneven pavement you get on tertiary roads that are “uncomfortable”. Going straight at 35-45 mph (posted speed limit) nets a very unstable feel - rocking, swaying, kinda like a boat in choppy water. It corners great at “all” speeds.
My question is do I address this by tweaking the spring rate or adding stiffer shocks? Or neither? Is a swaybar the answer? I’m not an overlander, but I put a spare and some tools in the back when I go wheeling.
I’ve not had much experience tweaking leaf springs trucks. I’d like to get started in the right direction. Again, I know what I drive - I’m not expecting a sports car, but the gentle sway shouldn’t be this noticeable (I think…?).
As you can see, it’s not tall as SAS trucks go.
