mfg Posted July 27, 2014 Report Share Posted July 27, 2014 When a rebuilder 'shims the impeller back against the plate' while working on a Paxton supercharger, what he's doing is adjusting the position of the impeller on its shaft for supercharger longevity....True? Link to comment Share on other sites More sharing options...
brad Posted July 27, 2014 Report Share Posted July 27, 2014 No, the boost is dependent on the impeller to scroll cover clearence. But you're right, if the impeller drags on the cover it won't last long! Link to comment Share on other sites More sharing options...
mfg Posted July 27, 2014 Author Report Share Posted July 27, 2014 No, the boost is dependent on the impeller to scroll cover clearence. But you're right, if the impeller drags on the cover it won't last long! Agreed!...Shimming back the impeller is done for increased supercharger boost. You make a good point about getting it too close to the rear plate! Link to comment Share on other sites More sharing options...
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