- Joined
- Sep 13, 2020
- Messages
- 777
- Points
- 601
- City
- Texas
- Vehicle Year
- 2007
- Engine
- 4.0L
- Transmission
- Automatic
- Total Lift
- Leveled out +1 inch at the front
- Tire Size
- 33 x 12.5 x R15 Baja Boss MT
- My credo
- For every door that closes another one opens for you to lead others always when you least expect it!
700 Lb spring & a "spring helper"? I don't have anything heavy up front. 800 Lb Eibach works well (for me) with ONLY 1" preload. Anymore preload then the truck sits higher & you end up with less travel. There is a road defect just down a half mile from my driveway, if you drive into this 30' long 3 foot deep asphalt paved rut at 45-50mph, you get full travel. Even on my F150, the tye-rap test shows how far down the shaft the body traveled, right about full travel, Apx 4.3" (1" drop on the ground negative travel) . Eibach Cat 2025 <catalouge< The front motion ratio of shock/spring travel to wheel travel is approximately 0.65:1 (typically ranging between 0.6:1 and 0.7:1). That means that for every 0.6" of shock travel, you get 1" inch of wheel travel. Typically my -040- Fox Shock with the 1000-250-0800 spring, the spring is listed as having a total travel of 5.33" Its reciprocal =1.54:1 which means that 5.33 x 1.54= 8.20" of wheel travel.
Some google help.....
What You Should Check
Some google help.....
What You Should Check
- Bump Stops vs. Solid Height: Your bump stops must be set up to engage before the coil spring reaches its solid (fully compressed) height or maximum safe travel limit.
- Spring Choice: If you are frequently packing the coils all the way down, you either need a stiffer spring rate, a spring with a higher total travel/longer design, or properly adjusted/extended bump stops to limit uptravel safely.

