Suspension bush + Crush tube issues

[spud69]

The thread below sums up previous discussions that have arose regarding bush tubes and fitting of the poly bushes:

http://www.haynes.co.uk/forums/showt...ight=poly+weld

Any search on poly bushes on the forum will show this to have come up many times in the past and before the forum melt down there was a large discussion where the consensus was to leave the welds in place to help keep the poly bushes fixed in place.

The bushes must be held in tight so that, as the crush tubes are clamped in the brackets, the bones and poly bushes can still rotate on the crush tubes but are solid enough so that any minor vibration is dampened by the poly bushes and not transmitted through the steering and chassis, the difference with rose joints is that they don't and give a much harsher ride and handling. However, not lose enough so that they do not move within each other and cause wear, but also still transfer feel and feedback through the steering. The poly bushes can be awkward to insert but can be done with the right technique without a problem. When you buy poly bush upgrade kits for production cars they can be very difficult to insert. As a manufacture and regular driver of various Haynes cars i do speak from some experience. Infact we have just fitted a full set to a car today and they are nice and firm but the bones also rotate very smoothly on the tubes, as Mark said you should be able to move a single wishbone and it will stay where it is with no load on. They may even squeak for a bit until they are worn in.

Admittedly, we have only recently started chamfering the inside edge of the bush tube (to ease inserting the poly bushes) in the lathe so if anybody is having any trouble or worries about fitting the bushes, including yourself Tatey, please return them and we will fit them and return them free of charge no problem.

Added pictures of bones and bushes in situ with nice firm but free movement, bones stay in place under their own weight and move freely.



Regards.....Andrew