12v: Effects for shimming the idle spring

White Knight

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Joined
Aug 18, 2007
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I know common practice is to remove all springs, but for the sake of learning I’m curious. What are the effects of shims under the idle spring? I would like to know how the drivability and performance of the governor is affected by adding tension to the idle spring only.
Scenario: There is a .020” shim under the idle spring. What happens when you remove that shim? What happens when you add another shim?

Does this result in poor driving characteristics?

:thankyou2:
 
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