brake caliper knuckle problems need help -
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Unread 08-15-2005, 05:38 PM   #1
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brake caliper knuckle problems need help

hey, one of my brake caliper bolts broke in the knuckle that holds it after trying to drill out and retap i realized that it cant fit any bigger bolts or anything so i need a new knuckle or any idea on how to fix it anyone know where to get a knuckle for cheap or have one?

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Unread 08-15-2005, 06:32 PM   #2
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yes you can fight a larger bolt. I am currently running 4 7/16 bolts in my front brakes. Take the metal sleeve out of the caliper, the part with the rubber boot on it. Take the boot off, and drill the sleeve out to accept the larger bolt. IIRC I used two inch bolts, but I actually trimmed them down a little with the bench grinder to keep them out of the back of the rotor.

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Unread 08-15-2005, 08:12 PM   #3
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I just repaired a stripped out caliper bolt hole this weekend using a Perma-coil kit. The caliper bolt is M8x1.25. The instructions said to drill the hole out to 21/64, tap the hole with the supplied tap, then install one of the inserts. Worked great and was super easy too.

So if the hole is no bigger than 21/64, you can use the Perma-coil kit. If the hole is already bigger than 21/64, you can get the next biggest kit, which I believe is M9x1.25, and get a new bolt. But you'd have to do as cruzmyxj said and drill out the sleeves.
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Unread 08-18-2005, 08:34 PM   #4
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Originally Posted by XJohnnyC
I just repaired a stripped out caliper bolt hole this weekend using a Perma-coil kit.

Been there done that many moons ago with a heli-coil kit... worked great...saved my a$$!
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