Originally posted by c_w
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Which bushings to use to minimize rear end steering and boot floor stresses ?
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Originally posted by JuhaV View PostAre you guys using your cars for trackdays ? Can these plastic inserts take that kind of beating without disintegrating into plastic powder ?
I am not too eager to pull down the whole rear end for bush replacement but would like to find a relatively final solution. I am doing 3-5 trackdays per summer. On the normal road use the soft bush effect is less evident, but still irritating. On the track I feel it is sometimes even dangerous.
If you're not dropping the subframe to replace the bushings then this bush inserts really work by literally filling the void in the bush which gives it so much movement. This plus limiting spacers above the subframe really tie the rear end down.
If you ever jack the rear up and use an axle stand under the subframe it will sink up inside the car an inch or so before it hits the "bump stop" on the body. Once you fill that gap (can easily be seen when you drop the front of the rear arch liner) it prevents this movement so it stops the subframe rotating on x-plane is that is the right term. In theory you need to drop the subframe fit the ACS alloy spacers but I used rubber with a cut in it to wrap around the subframe stubs with a spot of glue to stop them falling out (they're still there 5 years or so later!).
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Originally posted by c_w View PostI used rubber with a cut in it to wrap around the subframe stubs with a spot of glue to stop them falling out (they're still there 5 years or so later!).
There are those special cyanoacrylate based super glues for rubber which are used to make, for example, custom size O-rings. Such glue would seal the wrap-around rubber washer very nicely in place.The older I get, the faster I was ...
BMW HP2 Sport
ex- BMW Z3 M Coupe - Cosmosschwartz Metallic
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