Brake caliper bracket bore reconditioning tool?

[SuzukiGS750EZ]

Hey guys. Looking to really clean out the bore that the slide pins go in. Previous owner didn’t do a great job on the brakes. I tried brake cleaner and a wire brush but it’s not really touching all the grime and whatever else I can’t see in it. Plus, I think they mixed grease with silicone…
Any ideas?

It’s a 2001 Silverado if that gives you an idea of the bracket size.

 

[Wrench97]

Closest size drill bit work it around with brake clean then use the wire brush in a drill.

 

[bwringer]

Split the end of a 3/8" dowel, then stick a piece of sandpaper in the split. Chuck it in a drill.

 

[Steve_P]

Brush research makes ball hones in lots of small sizes.

 

[Wamsutta]

Weiler Power Tube Brush for your drill.

 

[64C10]

Expanding reamer would be ideal.

 

[bwringer]

Brush research makes ball hones in lots of small sizes.

Yup, they make Flex-Hones down to 4mm.

 

[driftpin]

I like Weiler abrasive products. Their grinder wheels are head and shoulders better than Diablo that HDodo sells. I bought a HD and the bench grinder jumped around like uit had the palsy. The Weiler was smooth like there wasn't even a wheel on it.

 

[M635_Guy]

Brush research makes ball hones in lots of small sizes.

This seems like it would be the best option. I like the idea of smoothing the surface, but not anything truly abrasive.

 

[The Cobbler]

Split the end of a 3/8" dowel, then stick a piece of sandpaper in the split. Chuck it in a drill.

yup. this
cheap , gets the job done, re usable .
I used 1/4" or 5/16 steel round bar for mine . it's in my box of wire wheels for when I need it for another project

 

[2ndGearRubber]

Brush research makes ball hones in lots of small sizes.

This is my preference, saves the customer over buying a reman (yuck) caliper just to get a bracket.

I fill them up with penetraing oil and run the ball hone, partially because the oil helps wash away and break up any goopy grease left over. Hose out with acetone/brake clean, inspect, repeat as required. Blow out or let dry before reassembly, as you don't want the acetone mixing with your fresh silicone grease.

 

[whateg01]

I like Weiler abrasive products. Their grinder wheels are head and shoulders better than Diablo that HDodo sells. I bought a HD and the bench grinder jumped around like uit had the palsy. The Weiler was smooth like there wasn't even a wheel on it.

That is why you should balance grinding wheels.

 

[ChevyEFI]

Upgrade to 2013 330mm or 2024 343mm brakes.

 

[jsaw]

I will agree with the emery cloth and dowel method

 

[Jweebothee]

Wire brush or drill bit,

 

[ecotec]

Brake cleaner and a bore brush in a small drill.

 

[djbmw]

It also depends how corroded the hole is, and how long you intend on keeping the caliper.
Here in the great white north if the dust boot covering the pin tears and lets in the salt brine during winter, the pin can be rusted in place, requiring the red wrench to extract. The pin bore is usually pitted to high hell which would require either drilling to the next size up or replacing the caliper.

However... if its a winter beater and it just needs to get by a few more months then pouring some muraic acid into the bore hole and letting it eat away at the corrosion for 8 minutes usually is the hacky way to get back on the road.