256-413-8300
l frankieoffroad@bellsouth.net
Frankies off road
740 steele station road
rainbowcity AL.35906
We build a 3" suspension system for the 80 series. Here I will address some of the questions we hear most from FJ80 owners seeking answers about lifting their 80 or to their lift geometry problems that they're currently experiencing.
Frequently Asked Questions
Q:Why build a 3" lift ? ..
A: We looked first at the geometry of the factory links and seen quickly that a 3.5" lift is maximum to keep the suspension geometry stable.
Q: Would you build a larger lift than 3.5"?
A: No, we set the maximum lift at 3.5'' for proper suspension geometry we then moved to the caster and drive line using 3" as a safety and have 1/2" margin to stay under the maximum lift so we can correct the caster and keep the front drive-shaft from becoming out of its normal operational alignment when we use our custom CV dual cardan shaft.
Q: What would it take to make a 3.5" or larger kit work ?
A: The need for proper suspension geometry sets the standard for lift height. Once the 3.5" lift barrier is exceeded the need for relocation of suspension mounting points is required. They must be lowered to correct the suspension geometry.
Q: What are the geometry problems when lifted beyond 3.5"
A: There are suspension specifications that need addressing when any suspension is in design and engineering stages. 1. nose dive 2. Roll axis 3. Anti squat.
1. Nose dive is the ability to resist the tendency of the front suspension to over compress when hard braking or going down steep inclines. In simple terms your front springs compress and your rear springs extend (Unload).
2. Any lift higher than 3.5" will increase the roll axis center while decreasing the truck stability. Roll axis center is the central point of weight of the truck in all axis.
3. Lifting higher than 3.5" without relocating the link mounting points will multiply the level of anti squat beyond desired levels while disturbing suspension stability.
Note: Nose dive and anti squat are also influenced by poor or lacking spring and shock design.
Q: Will longer or bent after market control arms solve the geometry problems of lifts greater than 3.5" ?
A: No, the arms can correct caster and steering clearance issues but the mounting points are not changed leaving the geometry issues.
Q: How does your 3" kit avoid all these problems?
A: Our lift was designed to operate within the spectrum of proper geometry to avoid the problems of larger lifts while maximizing performance with superior spring and shock design.
Q: How is your spring & shock design different from others on the market?
A: Our springs are designed with a progressive spring rate that provide ride quality of a soft spring and the load carrying capacity of a stiff spring. The springs are manufactured on state of the art Cnc machines while maintaining less than 2% variation. Our shocks are designed with Correct application valving technology that provides increased stability for improved handling, less nose dive on severe braking, less squat on hard acceleration, and smooth ride without harshness.
Q: What is the recommended tire size for your lift kit?
A: We recommend 315/75/R16 on factory offset wheels as the optimum size tire for our lift kit.
Q: IF I use the F.O.R. 3" lift on my 80 and plan to run 35" tires will the bumpstops used take away from suspension performance?
A: No, With our progressive rate coil design and specific valved shocks, the bumpstop length is designed to maximize the suspension travel during articulation.
Q: Will I experience driveline vibrations with your 3" kit?
A: Any lift added above stock height can produce driveline vibrations. Due to wide tolerances in manufacturer's standards on the FJ80- all vehicles vary. Some FJ80s need special attention for caster and driveline correction. Most 80s lifted with our kit do not experience driveline vibrations but a small percentage that do can be traced back the problem of worn u-joints.
Our springs are manufactured to the highest standards for maximum off road performance and steady on road responsive feel. Cost is secondary only to function and quality, we have built the complete kit around these standards as well as our Frankie's custom shocks and assure you no one can match our ability and performance standards we have set.
Any further questions or explanations please direct emails to : frankieoffroad@bellsouth.net
Thanks!
Our 3" lift includes:
2 progressive variable rate front coils
2 progressive rate rear coils
3 sets of shock eye adapters
4 bump stop relocation brackets
2 sway bar relocation brackets
1 hardware kit
2 extended vent tubes
2 brake line extension brackets
1 Emergency brake drop bracket
*Optional steering stabilizer $55.00*
*Optional Land Tank caster correction plates $160.00*
*Optional NON SPICER CV front drive shaft $600.00*
$1550.00 for base kit .
$2250.00 *with optional parts CV frontdrive shaft and caster plates, steering stabilizer is in testing and will be Available soon.
F.O.B. RBC AL.
shipping and tax if taxable in the state of Alabama.
