Broken bleed nipple

Find out more about the BMW 1 Series E81, E82, E87, E88.
Manufactured from 2004 to 2013

Moderators: Rich196, babybmwadmin, marco_polo, Producethis, Lambster

Post Reply
ttassie15
Knowledgeable Member
Knowledgeable Member
Posts: 174
Joined: Fri Aug 18, 2017 8:10 am

Broken bleed nipple

Post by ttassie15 » Sat Jan 12, 2019 4:18 pm

Hi all,
As title says, the bleed nipple has sheared off whilst trying to loosen it.
I saw a cheap set of 135i rear calipers on eBay and took a punt on them. They weren’t too bad condition, but I plan on getting them refurbed anyway to match the m135i fronts so wasn’t too bothered.
Both of the bleed nipples were really tight, but with a bit of plusgas I got one of them off, and unfortunately the other one just gave way and snapped off! I’ve read that if the nipple snaps off whilst you’re trying to undo it, as opposed to tightening it, you might as well write the caliper off. Is this the case?
What’re my chances of getting the snapped bit of screw out with a bit of heat and a screw extractor?
Or does anyone know of a company that can sort this and maybe paint/refurb the calipers at the same time??

Cheers!

Image

Image


Sent from my iPhone using Tapatalk
123D M Sport E82

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 52517
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: Broken bleed nipple

Post by marco_polo » Sat Jan 12, 2019 4:34 pm

I'd pop it in the oven (as hot as you dare - 150C?) for a while so it's heated through and through, then attack it with your extractor and a pipe freezing kit - see if you can shrink it free basically.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - M4 LCA's

Please help the Mod's by using the report [ ! ] button where appropriate

ttassie15
Knowledgeable Member
Knowledgeable Member
Posts: 174
Joined: Fri Aug 18, 2017 8:10 am

Re: Broken bleed nipple

Post by ttassie15 » Sat Jan 12, 2019 5:09 pm

I imagine it doesn’t need too long in the oven, few mins at 100°c or something? I don’t want to bake the thing will this affect seals, can I use a blow torch to heat just the snapped screw area?
Doing a couple of hot/cold cycles and then using the screw extractor? Or using the extractor first and then try shrinking it etc?



Sent from my iPhone using Tapatalk
123D M Sport E82

Autosri
Junior Member
Junior Member
Posts: 27
Joined: Thu Nov 08, 2018 9:27 pm

Re: Broken bleed nipple

Post by Autosri » Sat Jan 12, 2019 5:16 pm

Blow lamp will be better as it will heat the aluminium up faster than the steel bleed nipple and get a screw extractor on a small impact gun and try to gently rattle it out with the gun

You will trash the paint though so maybe try the oven first

User avatar
marco_polo
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 52517
Joined: Tue Apr 06, 2010 9:40 am
Location: Omnipresent Post Whore

Re: Broken bleed nipple

Post by marco_polo » Sat Jan 12, 2019 5:27 pm

Brakes get fairly hot during track use, so getting them warm shouldn't hurt. Brake fluid needs to work at 200C.
Blow torches tend to just locally heat the surface and ruin the paint, so not ideal imo.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - M4 LCA's

Please help the Mod's by using the report [ ! ] button where appropriate

User avatar
Twenny
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 10601
Joined: Tue Feb 18, 2014 5:20 pm
Location: South East Kent

Re: Broken bleed nipple

Post by Twenny » Sat Jan 12, 2019 5:46 pm

https://pro-calipers.co.uk/

I used this guy a few months ago and he was brilliant and very reasonable prices.
2010 125i E82 Coupe M Sport Black
P-Torqued 266bhp-BMWP exhaust+Strut+intake+skirts+grilles---Rieger diffuser-Darklines-retrofit cruise control-M135i front brakes-VMR v710-Eibach ARB
My build thread - http://www.babybmw.net/viewtopic.php?t=60951

ttassie15
Knowledgeable Member
Knowledgeable Member
Posts: 174
Joined: Fri Aug 18, 2017 8:10 am

Re: Broken bleed nipple

Post by ttassie15 » Sat Jan 12, 2019 6:17 pm

Think I’ll try the oven first.
So I wanna be heating them up first, then freezing the screw then trying the extractor?


Sent from my iPhone using Tapatalk
123D M Sport E82

ttassie15
Knowledgeable Member
Knowledgeable Member
Posts: 174
Joined: Fri Aug 18, 2017 8:10 am

Re: Broken bleed nipple

Post by ttassie15 » Sat Jan 12, 2019 6:32 pm

Twenny wrote:https://pro-calipers.co.uk/

I used this guy a few months ago and he was brilliant and very reasonable prices.
I’ve sent him an email, £20 to fix the bleed screw, and he might as well paint them whilst he’s got them!


Sent from my iPhone using Tapatalk
123D M Sport E82

User avatar
Twenny
Too Much Time To Waste Member
Too Much Time To Waste Member
Posts: 10601
Joined: Tue Feb 18, 2014 5:20 pm
Location: South East Kent

Re: Broken bleed nipple

Post by Twenny » Sat Jan 12, 2019 6:53 pm

ttassie15 wrote:Think I’ll try the oven first.
So I wanna be heating them up first, then freezing the screw then trying the extractor?


Sent from my iPhone using Tapatalk
Yeah unless you know what you’re doing I’d get them done by Pro Calipers. Probably cheaper in the long run lol
2010 125i E82 Coupe M Sport Black
P-Torqued 266bhp-BMWP exhaust+Strut+intake+skirts+grilles---Rieger diffuser-Darklines-retrofit cruise control-M135i front brakes-VMR v710-Eibach ARB
My build thread - http://www.babybmw.net/viewtopic.php?t=60951

Erwinko
Junior Member
Junior Member
Posts: 8
Joined: Thu Jan 10, 2019 7:47 pm

Re: Broken bleed nipple

Post by Erwinko » Sat Jan 12, 2019 8:57 pm

Twenny wrote:
Sat Jan 12, 2019 6:53 pm
ttassie15 wrote:Think I’ll try the oven first.
So I wanna be heating them up first, then freezing the screw then trying the extractor?


Sent from my iPhone using Tapatalk
Yeah unless you know what you’re doing I’d get them done by Pro Calipers. Probably cheaper in the long run lol
Indeed, they can be a real pain in the ass!
They broke for a reason, not because they were easy losing.
100degr heat won't do anything. In most cases you have to drill the bleed nipple out. Very secure job.

Autosri
Junior Member
Junior Member
Posts: 27
Joined: Thu Nov 08, 2018 9:27 pm

Re: Broken bleed nipple

Post by Autosri » Sat Jan 12, 2019 10:09 pm

Heating them up locally around the bleed nipple is exactly what you want to happen but will kill the paint as the aluminium expands more quickly than the steel bleed nipple
They snap because the metal is so thin under the head not because they are particularly tight in there

Post Reply

Return to “E81, E82, E87, E88 (2004-2013)”