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Poly Upper Adjustable Bushing Set , Sprite , & Mg Midget

Poly Upper Adjustable Bushing Set , Sprite , & Mg Midget

Poly Upper Adjustable Bushing Set , Sprite , & Mg Midget
Qty:
In Stock
Internet Price $39.95
Part No: 88G274-P-ADJ
In Stock
Internet Price $39.95
The standard bushing in the suspension of all Sprites and Midgets are made of rubber. When the factory decided they needed a little firmer feel they use a "metalastic" bush that is a rubber bush vulcanized to a metal bush. Modern engineered materials has now allowed a cost effective alternative. The use of polyurethane in a suspension bush provides a tremendous improvement in precision and control. The original use of rubber is contrary to the design objective. Rubber was introduced as a compromise of handling in an attempt to broaden the appeal of the "sports car". This is no longer needed! "Poly" not only provides a great material to act a pivot but the very low flexibility provides tremendous precision and control. The most commonly replaced bush in the front suspension is the top trunion bush. Two bushes are used to connect the top trunion to the shock. This bush not only serves as a critical pivot but also controls camber. Camber is the amount the wheel tilts in or out at the top. Typical high performance cars have "Negative" camber- top of tire leans inward. Worn bushes can also cause a change in "caster". "Caster" is the amount in degrees that the king pins of the front suspension tilt front to rear. Caster can effect a number of characteristic; the ease of turning the wheel, the tendency of the wheel to return to a straight ahead position, the camber while turning the wheel, etc. The important conclusion is that these simple bushes are very critical to the performance and handling of your Sprite or Midget. Now available in two forms; direct poly replacement bushes or "Poly-Adjustable" bushes, like this set, to allow for custom camber changes.
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Related Technical Articles:
MG Midget and Sprite Suspension
Created: December 12, 2013
Suspension options available for Austin Healey Sprites and MG Midgets are reviewed.
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