Thread: Front caliper piston too large?

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  1. #1 Front caliper piston too large? 
    SE Level Member techweenie's Avatar
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    I just upgraded the brakes on my GP to slotted rotors and ceramic pads, and then I noticed when it was back together that the front caliper pistons extend beyond the outside edge of the pads. It caused uneven pad wear on the old pads, so I'm wondering if that's normal or if I have the wrong calipers? It seems to me if I had dual piston calipers this issue wouldn't exist.
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  2. #2 Re: Front caliper piston too large? 
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    i believe thats normal.

    its not doing brake maintenance that causes them to have premature wear.

    clean the sliders and the holes out and make sure they have fresh grease.

    If one of hte boots is torn, replace.
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  3. #3 Re: Front caliper piston too large? 
    GTX Level Member OH4CompG's Avatar
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    Yup, that Canadian guy is right. I recently switched to the front F-body setup and the stock caliper pistons go off the pad a little
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  4. #4 Re: Front caliper piston too large? 
    LaBarge Supercharged sseilmnop's Avatar
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    Uneven pad wear is a sign that the calipers are not sliding on the pins or the caliper is sticking and needs replaced.
    Adapters, Phenolic Intercoolers, Supercharger Parts & TVS2300
    http://stores.ebay.com/QualitySuperchargers
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  5. #5 Re: Front caliper piston too large? 
    PittState Automotive Tech GAFF's Avatar
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    did it wear both pads
    SOLD 1999 GT Silvermist TS
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  6. #6 Re: Front caliper piston too large? 
    SE Level Member techweenie's Avatar
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    The pads wore uneven from inside edge to outside edge, not end to end like a pin was sticking. It was only the pads on the piston side. The outside pads wore evenly.
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  7. #7 Re: Front caliper piston too large? 
    PittState Automotive Tech GAFF's Avatar
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    I mean both right and left side of the vehicle
    SOLD 1999 GT Silvermist TS
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  8. #8 Re: Front caliper piston too large? 
    SE Level Member techweenie's Avatar
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    Yes, both sides were equally affected. I've never seen this happen before on other vehicles.
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