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-   -   Stripped caliper bleed hole (http://www.the370z.com/brakes-suspension/131604-stripped-caliper-bleed-hole.html)

dts3 07-27-2019 07:48 PM

Stripped caliper bleed hole
 
As the subject says. I was bleeding my brakes and overdid it tightening the bleeder screws. It stripped out and was leaking from both the bleeder hole and threads. I wasn't home so I ended up tapping it out to 7/16 and just sticking a rusty bolt in there with some Teflon tape. I got out most (not all) of the shavings from the tap and topped off the bleed hole with fluid before closing it up. It worked better than I expected.

Now... Do I have to buy a new caliper, or should I be able to just get a 7/16 bleeder screw now that I've tapped this hole? I know I did not bottom out the tap on the caliper hole seat, so that interface should be in tact.

I'd rather not buy a new caliper and have it powder coated if I don't have to, but I think I know how this willl go.

Rusty 07-27-2019 08:18 PM

Google is your friend on this.

https://www.google.com/search?q=brak...hrome&ie=UTF-8

dts3 07-27-2019 08:31 PM

Quote:

Originally Posted by Rusty (Post 3869638)

I guess I should have been more clear... I was wondering if anyone here had experience with this they could share

Rusty 07-27-2019 08:42 PM

Quote:

Originally Posted by dts3 (Post 3869646)
I guess I should have been more clear... I was wondering if anyone here had experience with this they could share

:shakes head:

You want me to fix it for you?

It's repair kits for stripped out bleed holes. 2 ways of doing it. Heli-coil or new seat and bleeder screw. I've done it both ways.

dts3 07-27-2019 09:58 PM

Do they hold up well... Which would you recommend... ?

Rusty 07-27-2019 10:00 PM

Quote:

Originally Posted by dts3 (Post 3869662)
Do they hold up well... Which would you recommend... ?

I don't know, since you already drilled it.

SouthArk370Z 07-28-2019 06:34 AM

I haven't done this specific job but have done similar jobs as an industrial maintenance person. If you did the temporary repair job in situ, you probably have metal shavings and PTFE tape in the system. Remove the caliper, disassemble, clean caliper and flush fluid, re-tap hole if needed, re-assemble with new bleeder and without PTFE tape.

dts3 07-28-2019 12:45 PM

I absolutely have some shavings from the tap and probably some tape as well. It sounds like the consensus is that our calipers have enough metal around the bleed screw to make this a viable solution (given that at least Rusty has done it)

dts3 07-28-2019 01:16 PM

This is my current situation in case anyone is wondering

https://i.imgur.com/Q9JRaaHl.jpg
https://i.imgur.com/1QMdcpbl.jpg
https://i.imgur.com/XHHCStql.jpg

The threads on the rusty bolt are wet because it was failing to hold pressure before I put the Teflon tape on it. It sealed perfectly after that, but I did not take a picture.

On a side note...
Those streams of brake fluid sat on the caliper for a day and wiped off the powder coat immediately with Dawn and water. It didn't etch/eat the powder coat like some people say it does to paint, so I'm happy about that

g96818 07-29-2019 02:50 AM

just replace it. I couldn't find torque specs for the caliper halves.
https://www.autozone.com/brakes-and-...81_796468_5913

jchammond 07-29-2019 03:17 AM

Quote:

Originally Posted by dts3 (Post 3869768)
This is my current situation in case anyone is wondering

https://i.imgur.com/Q9JRaaHl.jpg
https://i.imgur.com/1QMdcpbl.jpg
https://i.imgur.com/XHHCStql.jpg

The threads on the rusty bolt are wet because it was failing to hold pressure before I put the Teflon tape on it. It sealed perfectly after that, but I did not take a picture.

On a side note...
Those streams of brake fluid sat on the caliper for a day and wiped off the powder coat immediately with Dawn and water. It didn't etch/eat the powder coat like some people say it does to paint, so I'm happy about that

You send it to Rusty & it’ll be good as new...a heli-coil is stronger than the aluminum, but if for some reason that you’ve cracked the caliper...then would probably need another one, or 1/2 one to build back up to spec :tup:

Rusty 07-29-2019 07:56 AM

Quote:

Originally Posted by g96818 (Post 3869856)
just replace it. I couldn't find torque specs for the caliper halves.
https://www.autozone.com/brakes-and-...81_796468_5913

There is no torque spec listed in the manual. You have to use a spec from on of these.

https://www.google.com/search?q=metr...w=1280&bih=578

g96818 07-29-2019 11:21 AM

Quote:

Originally Posted by Rusty (Post 3869895)
There is no torque spec listed in the manual. You have to use a spec from on of these.

https://www.google.com/search?q=metr...w=1280&bih=578

They also have those tables in the GI section of the manual, but I've found some mismatching torques used in the work steps so I'm a bit leery about just using tables.

dts3 07-29-2019 11:51 AM

Quote:

Originally Posted by jchammond (Post 3869859)
You send it to Rusty & it’ll be good as new...a heli-coil is stronger than the aluminum, but if for some reason that you’ve cracked the caliper...then would probably need another one, or 1/2 one to build back up to spec :tup:

When he offered to fix mine above I assumed he was being sarcastic because he did it after the "angry face" lol

Rusty 07-29-2019 04:11 PM

Quote:

Originally Posted by dts3 (Post 3869950)
When he offered to fix mine above I assumed he was being sarcastic because he did it after the "angry face" lol

You was clear on what you needed. That's why the :shakes head:

The torque values are based on dry and wet threads. The torque values for the caliper bolts ain't that high. I forgot what I torqued mine too. I have it written down someplace, but where? :icon14: You know what the bolt diameter is?


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