C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1990 brake caliper bolt sizes

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Old Nov 4, 2008 | 05:28 PM
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Default 1990 brake caliper bolt sizes

This is a really quick question. Does anyone know what size bolt is used to hold the rear brake calipers to the bracket? There's two of them, and I don't seem to have the right sized wrench for them. Thanks a lot.

Paul
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Old Nov 4, 2008 | 08:06 PM
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They are the same bolts as the front calipers. IIRC, you need a 13mm wrench to remove the bolts and a 17mm wrench to hold the guide pin
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Old Nov 5, 2008 | 01:12 PM
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There's no guide pin on the back, just two bolts. I can tell you that I've tried a 17mm and it's too small. An 19 mm is too large. So is it 18mm?
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Old Nov 6, 2008 | 01:40 PM
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Any help?
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Old Nov 6, 2008 | 04:13 PM
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The bolts that attach the caliper bracket to the spindle are 18mm.
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Old Nov 6, 2008 | 06:45 PM
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Thank you. That's kind of what I thought. I have 17mm and 19mm wrenches, so I'll have to get an 18mm. Thanks again.

Paul
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