Cross Threaded Caliper Bolt - Chicagoland Sportbikes
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post #1 of 12 (permalink) Old 06-25-2011, 01:03 PM Thread Starter
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Cross Threaded Caliper Bolt

I cross threaded the top bolt on my rear brake caliper. The bolt is on the caliper itself. I've never tapped new threads or helicoiled threads before. What is the best way to get this done?

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post #2 of 12 (permalink) Old 06-25-2011, 01:48 PM
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Get a helicoil kit and follow the instructions. Its not hard. Just make sure you drill as straight as possible and tap as straight as possible.

You should use a tap handle to help keep it straight but ive gotten by with just a small adjustable wrench. You just have to be a little more careful

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post #3 of 12 (permalink) Old 06-25-2011, 02:33 PM
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Helicoil for sure. Read, understand, then follow the instructions. It's pretty simple. I stripped one of my rearset mounting bolts a while back, and the helicoil has worked fine.

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post #4 of 12 (permalink) Old 06-25-2011, 03:43 PM
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BTW a complete Helicoil kit is around $40 if I remember right. They're very proud of their product But you get a handfull of inserts, drill bit, tap, and the install tool thingy

It might even be cheaper to buy a used caliper off ebay. But then you need to bleed the brakes and all that malarkey

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post #5 of 12 (permalink) Old 06-25-2011, 03:53 PM
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Hmm, I've always bought the specific size kits, which have always been less than $10.

Ace hardware and other hardware stores will have them. Buy the size that fits the bolt you are using. It will contain a drill bit, insertion tool, and a few helicoils of that size.

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post #6 of 12 (permalink) Old 06-25-2011, 04:03 PM
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If the cross thread did not rip out the threads and only crushed them you could try chasing the threads with a tap. As long as the threads clean up and you can tighten the bolt to recommended torque it should be fine. I personally would be a little skeptical of a helicoil on a brake caliper, I'd prefer drilling out and tapping it one size larger and eliminating the helicoil. But, That's just my personal peference.

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post #7 of 12 (permalink) Old 06-25-2011, 04:10 PM
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Nobody on this site has heard of JB Weld? Great product.
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post #8 of 12 (permalink) Old 06-25-2011, 04:31 PM
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Doesn't JB Weld make it hard to get things back apart later? After all, this is his own bike, not someone else's machine that he took in for repair!

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post #9 of 12 (permalink) Old 06-25-2011, 04:51 PM
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says on the jb weld instructions that it can be tapped. its only the rear,
now the front would be different. price a used caliper maybe. gl

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post #10 of 12 (permalink) Old 06-25-2011, 05:50 PM Thread Starter
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Quote:
Originally Posted by Dug2 View Post
says on the jb weld instructions that it can be tapped. its only the rear,
now the front would be different. price a used caliper maybe. gl
$10 on ebay + $8 shipping. This might not be a bad idea.

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Originally Posted by Arch View Post
In motorcycle terms, that's like taking your Ducati to a dealer for service, and they hand you back a 1979 backfiring Honda 400 Hawk.. because after all, a bike is a bike.
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post #11 of 12 (permalink) Old 06-25-2011, 06:11 PM
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Quote:
Originally Posted by beac83 View Post
Doesn't JB Weld make it hard to get things back apart later? After all, this is his own bike, not someone else's machine that he took in for repair!
Perfect time for a "Need help changing brake pads" thread.
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post #12 of 12 (permalink) Old 06-25-2011, 11:47 PM
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Quote:
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Nobody on this site has heard of JB Weld? Great product.
you use that to install countershaft sprockets?

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