rear suspension noise over tar strips

[RandallNeighbour]

Originally Posted by 911monty

The car needs to be sitting on all 4 wheels. When you tighten the bolt thru the bushing, the bushing center shaft is held in that position by the bracket. Control arm movement up and down is enabled by the bushing rubber torquing/stretching around that center shaft. When you load the cars suspension before tightening, the rubber bushing is in a neutral/unloaded position. It can then stretch equally in both directions as the suspension compresses or rebounds. If you tighten without loading the suspension then once the car is on the ground the rubber bushing must stretch as the arm is compressed upward. This has the bushing loaded 100% of the time. When you hit a bump and the suspension compresses, the bushing must stretch even further than designed. The only time the bushing is relaxed is when the car leaves the pavement and is flying. Hope This makes sense.

Thanks so much for this explanation. It makes a lot of sense to me and may be the reason some of my control arms have worn out prematurely. They were not tightened under load.

[911monty]

Originally Posted by RandallNeighbour

Thanks so much for this explanation. It makes a lot of sense to me and may be the reason some of my control arms have worn out prematurely. They were not tightened under load.

Thanks RandallNeighbor, Glad to be able to return a small ripple of benefit to the sea of information yourself and the many other members have provided by their time and experience to this forum. To quote Retroman "Remember we're all in this together"!

[Pdwight]

Anyone used these ?