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Technical Pages - SUSPENSION
This article sourced from Minor Mania
Keeping you in suspense ...
The best thing you can do for your Minor's suspension is to replace all the rubber bushes with one of the latest plastic-style bushes;
In New Zealand, Nolathane is by far the most readily available, and is in most cases actually easier to get than the standard rubber bushes. Polyurathane is available but not as readily. Nolathane is generally of a harder grade than polyurathane bushes and is a much nicer red anyway. Nolathane is available at most suspension shops and even some service stations, and Morris Minor-spec parts are usually available off-the-shelf.
The only problem with Nolathane is that it is a fairly hard material, and will stiffen the ride of your Minor quite considerably if you replace all of the rubber bushes in the Minor suspension system with it. If this is what you want, (maybe you're happy to sacrifice ride for handling), then Nolathane will do the job brilliantly.
A happy compromise can be reached by replacing only some of the standard rubber bushes. The combination is up to you, but I recommend fitting Nolathane bushes at the front to the lower swivel pin (where the wheel upright meets the wishbone), the front of the torsion bar (where it fits into the chassis eye-bolt), and in the leaf-spring hangers at the back of the car. With this set-up, you will notice the difference in handling but will still have a fairly forgiving ride.
In the UK, polyurathane bushes seem to be the prefered option. There is a poly bush replacement available for every rubber bush on the Minor.
Dave Ryan's Greasing Tips
Greasing of the Minor suspension is fairly straight forward but there is one little trick that Dave Ryan at the Morrie Minor Centre showed me. The swivel pins (the vertical members that the wheel and brakes are attached to ) are carried at the top and bottom in threaded trunions and need to be greased regularly. Because one side of the thread will be loaded up when the weight of the car is on them you should jack up the car under the lower suspension arm. This takes all the load off the joints allowing grease to flow freely around the threads. If you jack the car on the chassis the torsion bars will load up the threads, again preventing grease getting in all around.
A word of warning, the lower suspension arm is on an angle and the jack tends to slip off. I always leave the wheel on and have a set of chassis stands in place in case the car slips off the jack.