[Mgs] MGB steering problem

[PaulHunt73]

Bump steer is different to vibration.  Bump steer is when the trackrods are not at the idle angle on smooth surfaces, and that angle increases when you hit a bump i.e. compress the suspension.  That effectively pulls the wheels in or give more toe in.  Bad enough if both wheels go up by the same amount, but if only one wheel hits a bump only that turns in so with the other wheel pointing as it was the car changes direction.

Vibration over a bump is something loose, or something hitting something it shouldn't i.e. insufficient clearance somewhere, or something worn i.e. too much clearance.  If the damper bearings are badly worn it could be them, but usually it is just the oil seals that go.  It could also be king pins, bearings, upper and lower trunnions, track-rod ends, anything in the rack, the UJ, or the column.  It could be that the problem was always there, but the bump-steer from lowering the suspension has made it noticeable.

PaulH.
  ----- Original Message ----- 


  I hope someone can help me. I have a 1980 MGB that has been lowered with parts sourced from Moss Motors. Since lowering the car I have an annoying vibration in the steering wheel whenever I hit a bump.
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