Tag: suspension

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Volvo S70, V70, XC70, 850 Control Arm Replacement

I thought for sure that we had a writeup on control arms but we sure don’t. I would like to say that it is just 3 bolts and you are done but it is never that easy. The Haynes manual is pretty good there but I guess I need to do a writeup on the next one that I change. That doesn’t help you now.

With all of the fat boiled away it really is a matter of removing three bolts, removing the control arm, and then bolting the replacement back in but there are some “Gotchas” along the way.

Fast Friday Volvo Performance and Tuning

Performance Suspension Guide

Springs support the weight of the car and are generally specified in pounds of force required to deflect (compress) the spring 1 inch, also known as spring rate. The higher the number the firmer/stiffer the spring. Springs that take a linear amount of force to deflect are called linear springs while progressive springs take less force to deflect initially and take more force to continue deflection as the spring is compressed. Progressive springs are popular with performance enthusiasts as they provide a more comfortable initial spring rate with a firmer final spring rate that keeps the vehicle more stable. A good way to think about springs is to remember that they limit how far the suspension moves, not how fast.