Installing a rear "torsion adjuster"
When we initially built the car, we didn't install a center torsion adjuster on the rear housing; I don't remember why, but it was a mistake for two important reasons. The first issue is that the stock torsion housing center splines will not stand up to the abuse they receive in off-road racing. They will quickly strip out, leaving the car with no rear spring support. That would obviously mean that the rear suspension would collapse, leaving no ground or tire/wheel well clearance...... The "King Kong" center adjuster we use is much stronger than the stock center splines. The second issue is adjustability. Adjusting the torsion bar pre-load (ride height) with the stock hardware requires disassembly of nearly the entire rear suspension system and "re-clocking" of the torsion bars, a time consuming affair (at least 45 minutes to do both sides when in our shop). With the center adjuster installed, we can change pre-load at will in just a few seconds. Those are two major advantages for a desert race car.