2 years ago on a Sunday afternoon while working on my rear brakes a bleed nipple sheared.
Removed the Caliper took it to our workshop and helicoiled it with a S/S insert.
Also made the bleed nipple.( What else can you do on a Sunday afternoon)
Didn’t have any problems
Last year had 2 new rear calipers so the helicoiled one was replaced.
Will be replacing front brake hoses soon.
If we have a similar problem with front nipples. What are thoughts on using helicoils.
Is it acceptable or should it be avoided.
Helicoil brakes.
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ian_rs6avant
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Re: Helicoil brakes.
there's a kit out there called nipper therapy used it to fix my front 8 pots. easy to use and safe
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Sent from my SM-G977B using Tapatalk
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steve2003rs6
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Re: Helicoil brakes.
Thanks Ian. Nice to know there is a fix it kit available.
Just trying to preempt a problem when we replace the hoses.
Already ordered new Brembo front bleed nipples c/w new dust caps.
Regards Steve.
Just trying to preempt a problem when we replace the hoses.
Already ordered new Brembo front bleed nipples c/w new dust caps.
Regards Steve.
Re: Helicoil brakes.
I can't see what harm a helicoil would do since the important thing is that the nipple closes off the opening and that has nothing to do with the thread. I'd be a bit wary of getting swarf dropping into the caliper, but that risk can be managed.
Best thing is to soak in release oil for a good while before attempting to undo and make a sacrifice to the Audi gods.
Best thing is to soak in release oil for a good while before attempting to undo and make a sacrifice to the Audi gods.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Helicoil brakes.
Has anyone had the brake pad retaining pins seized? I have on the B7 at the moment and was thinking of what would be the best course of action ? Cut with a dremel on the insides first and try punching or drilling out ?
Re: Helicoil brakes.
I have never had a problem with mine. Plenty of release oil soaking then gently drifting out from front to back with an appropriate drift. It's hard to see how they could seize to the point where they can't be drifted out.
Also replace with liberal copper slip on the pins.
Also replace with liberal copper slip on the pins.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Helicoil brakes.
Excellent. Thanks for postingian_rs6avant wrote: ↑Sat Apr 18, 2020 9:59 pmthere's a kit out there called nipper therapy used it to fix my front 8 pots. easy to use and safe
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ian_rs6avant
- 1st Gear
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Re: Helicoil brakes.
here's a link I ordered the larger size.
http://www.fraserbrowneng.co.uk/store/i ... duct_id=51
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http://www.fraserbrowneng.co.uk/store/i ... duct_id=51
Sent from my SM-G977B using Tapatalk
Re: Helicoil brakes.
Looks like it relies on having a flat mating surface around the nipple hole for the crush washer to work against. That might not be the case for some calipers. I wouldn't want to open the nipple too often to bleed without replacing the washer. They are supposed to be single use.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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ian_rs6avant
- 1st Gear
- Posts: 72
- Joined: Sun Sep 01, 2019 5:28 pm
Re: Helicoil brakes.
bigger ones doesn't use a washer, the part with the washer stays in and the nipple screws into that, so would never never be a issue.Shoppinit wrote:Looks like it relies on having a flat mating surface around the nipple hole for the crush washer to work against. That might not be the case for some calipers. I wouldn't want to open the nipple too often to bleed without replacing the washer. They are supposed to be single use.
Sent from my SM-G977B using Tapatalk
Re: Helicoil brakes.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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steve2003rs6
- Cruising
- Posts: 2935
- Joined: Mon Aug 19, 2019 7:43 pm
Re: Helicoil brakes.
Looks good. And a very reasonable price when you consider the alternative.
Thanks for sharing the info
Thanks for sharing the info
Re: Helicoil brakes.
Thanks . Mine are definitely stuck solid . I've tried the penetrating oil plus gas . I've used a suitable drift aswell . It was starting to mushroom the point on the pin so I stopped . Will try to get some grips on the pins somewhere along their length and try turning them to see if that will break them free .Shoppinit wrote: ↑Sun Apr 19, 2020 9:32 amI have never had a problem with mine. Plenty of release oil soaking then gently drifting out from front to back with an appropriate drift. It's hard to see how they could seize to the point where they can't be drifted out.
Also replace with liberal copper slip on the pins.
Re: Helicoil brakes.
They are probably most stuck at the back where the spring retainer bit is, rather than the front where the pointy bit is. Did you soak that bit, too?
You could try a bit of diesel instead of the plus gas. I've had some success with that where Plus Gas hasn't had an effect.
You could also try putting some heat into the pin. Remove the caliper, protect the caliper with kapton tape and use a blow torch to put some heat into directly the pin directly as close to the retaining spring / caliper body as you dare. Obviously you don't want to ruin the paint on the caliper. I would also use a candle to dab onto the back of the pin to try and draw some wax into the cavities.
You could try a bit of diesel instead of the plus gas. I've had some success with that where Plus Gas hasn't had an effect.
You could also try putting some heat into the pin. Remove the caliper, protect the caliper with kapton tape and use a blow torch to put some heat into directly the pin directly as close to the retaining spring / caliper body as you dare. Obviously you don't want to ruin the paint on the caliper. I would also use a candle to dab onto the back of the pin to try and draw some wax into the cavities.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
Re: Helicoil brakes.
Also, I've found the WD40 seems to dissolve rust somewhat and can work better than pure release oil.
Daytona RS6 C5 Avant. Viper'd, Billies, Waggers, MTM box brain, C6 stoppers, xcarlink, R8 coolant cap (woohoo)
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
///M3 E46 | XC90 (V8, natch) | Passat GTE | RR Classic V8 flapper
"The major difference between a thing that might go wrong and a thing that cannot possibly go wrong is that when a thing that cannot possibly go wrong goes wrong it usually turns out to be impossible to get at and repair."
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