brake problems i give up now!!!

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steve_k
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Sat May 28, 2022 8:36 am

fixedwheelnut wrote:
Fri May 27, 2022 11:42 pm
steve_k wrote:
Fri May 27, 2022 5:35 pm
i might do that tomorrow if it dont rain, can't hurt to try as i weigh up my options.
you could also clamp the hose to the offending calliper and see if it rectifies the pedal problem.
i'll give that a try, can't hurt.

also my mate's popping round later with those st220 calipers to see if they fit.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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flybynite
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Sat May 28, 2022 11:28 am

fixedwheelnut wrote:
Fri May 27, 2022 11:42 pm
you could also clamp the hose to the offending calliper and see if it rectifies the pedal problem.
steve_k wrote:
Fri May 27, 2022 5:35 pm
i'll give that a try, can't hurt.
It can hurt, clamping a hose enough to stop you mashing the pedal will likely damage the hose, especially if it is braided. Hose clamps only meant to stop it syphoning out through gravity. You can get stop-ends for the brake pipe for that purpose. It is what I have always used to isolate a caliper.

steve_k wrote:
Fri May 27, 2022 5:35 pm
also my mate's popping round later with those st220 calipers to see if they fit.
There are two types of ST220 caliper, the early one made by ATE (same as on the ASBO Focus) is too heavy for the E30, too heavy for most cars IMHO. Later one is much lighter and probably what you would want.
steve_k
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Sat May 28, 2022 11:32 am

flybynite wrote:
Sat May 28, 2022 11:28 am
fixedwheelnut wrote:
Fri May 27, 2022 11:42 pm
you could also clamp the hose to the offending calliper and see if it rectifies the pedal problem.
steve_k wrote:
Fri May 27, 2022 5:35 pm
i'll give that a try, can't hurt.
It can hurt, clamping a hose enough to stop you mashing the pedal will likely damage the hose, especially if it is braided. Hose clamps only meant to stop it syphoning out through gravity. You can get stop-ends for the brake pipe for that purpose. It is what I have always used to isolate a caliper.

steve_k wrote:
Fri May 27, 2022 5:35 pm
also my mate's popping round later with those st220 calipers to see if they fit.
There are two types of ST220 caliper, the early one made by ATE (same as on the ASBO Focus) is too heavy for the E30, too heavy for most cars IMHO. Later one is much lighter and probably what you would want.
You mention the stop ends & thankfully I had a set in the shed, looks like it was the caliper causing the problem,

As for the st220 calipers? Well he's been round & we offered them up & all that would be needed is a 6mm spacer between the strut & the bracket, also they are the later calipers, discs would have to be redrilled audi a3 1.8t 288x25 ones (easy enough to get hold of),

So time to make a choice.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Sun May 29, 2022 9:38 am

i forgot to add yesterday that my mate also had a set of ST225 (asbo) front calipers & the weight difference is very very noticeable, by christ are they heavy!!
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Sun May 29, 2022 9:43 am

well i made my choice, i've got a set of st220 calipers & carriers & some mintex 1144 pads on the way along with a pair of PCD changed audi a3 1.8T 288x25mm discs,

will be interesting to see how they perform especially when paired with the e90 25.5mm M/C & servo.
when it all arrives i'll get plenty of pictures & try to do a "how to" for here.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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martauto
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Sun May 29, 2022 12:43 pm

Did you eliminate the caliper just to make sure ?

Mart.
Only the E46 cab left now.
Just got too old.
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Sun May 29, 2022 3:04 pm

martauto wrote:
Sun May 29, 2022 12:43 pm
Did you eliminate the caliper just to make sure ?

Mart.
As best I could,

Looks like it could be the culprit,
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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martauto
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Sun May 29, 2022 4:12 pm

steve_k wrote:
Sun May 29, 2022 3:04 pm
martauto wrote:
Sun May 29, 2022 12:43 pm
Did you eliminate the caliper just to make sure ?

Mart.
As best I could,

Looks like it could be the culprit,
:banana:

Mart.
Only the E46 cab left now.
Just got too old.
steve_k
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Wed Jun 01, 2022 10:18 am

Well the new st220 calipers have turned up, just waiting for the carriers, pads & discs to get here now.

Hopefully I'll get them fitted either over the weekend (family permitting) or early next week.

Just been reading up & it would appear that this set up is along the same lines as the one alpina used on the c2 2.7 "big brake conversion"

Let's hope it all works.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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flybynite
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Wed Jun 01, 2022 10:51 am

steve_k wrote:
Sun May 29, 2022 9:43 am
along with a pair of PCD changed audi a3 1.8T 288x25mm discs,
Where did you get the discs done. Are they plugged or just re-drilled.?
steve_k
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Wed Jun 01, 2022 11:01 am

flybynite wrote:
Wed Jun 01, 2022 10:51 am
steve_k wrote:
Sun May 29, 2022 9:43 am
along with a pair of PCD changed audi a3 1.8T 288x25mm discs,
Where did you get the discs done. Are they plugged or just re-drilled.?
They're from a firm called MTec brakes, as far as I know they redrill them at a cost of £25 a pair,

Never seen any bad reports/reviews about them either.

You have to search the site for "pcd change".
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Wed Jun 01, 2022 11:44 am

here's a link to the pcd change page

https://www.mtecbrakes.com/pcd-change
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Fri Jun 24, 2022 6:33 pm

well after a couple of family problems to sort, a failed house viewing (trying to move closer to my son), i finally got chance to fit the new ST220 front calipers & A3 1.8T 290mm x 25 discs,

before i fitted them i changed the banjo bolts to 45 degree AN3 swivel fittings same as i've used on the rear calipers.

got the new calipers on with new carriers, slide/guide pins & bolts, bled the system twice, once with the pressure bleeder & once with the one man vizibleed kit,

could see any air in the clear hose when i bled the system, checked all the unions were bone dry (thankfully they were). pedal nice & firm,

fast forward to today,

dropped the car back onto it's wheels, foot on the brake pedal (next to no travel) started the engine & the pedal sank about an inch, "this looks promising" i thought,

into reverse backed up about 6 foot & tried the brakes,

slightly soft at first "just the new pads bedding in i hope" i thought, went back another 6 foot tried again & got the same result, back again & still the same.

so i pulled forward a bit quicker & tried again, still soft & had to pump the pedal twice to get the car to stop.
so i parked the car up, slightly (lol) pissed off & got out,

but as i got out i looked behind the car & saw four patches of what would appear to be brake fluid on the drive where i had tried the brakes,

thing is it was only on the passenger side & inline with the wheels.

so i got the car back up on axle stands & had a good look round on the passenger side.
now, please bare in mind that ALL the brake lines are braided steel & use AN fittings,

i started at the rear caliper & the union on that was bone dry as was the line leading to it.

checked the T piece above the diff & all 3 unions on that were bone dry.
i then moved forward, the union on the front caliper was also bone dryas were the ones on the M/C, i then noticed that the union on top of the bias valve was damp where the braided line went into the union/adapter.

so i'm starting to think that there could be a pinprick hole in either the braided steel line or the adapter isn't seating correctly,

it would appear that the "leak" only seems to occur when under pressure with the engine running.

also i'm wondering if using the pressure bleeder has caused a seal nside the M/C to be "flipped".

i'm pulling my hair out with this now as it's the one bit thats holding up the MOT.

if any one has any ideas then please please let me know.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Fri Jun 24, 2022 6:55 pm

just had a thought, tomorrow i'm going to remove the adjustable bias valve & replace it with a straight connector & rebleed the brakes & try them again,

at least that way i would be able to at least rule out any leaks from that valve.

sound like a good idea?
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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flybynite
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Fri Jun 24, 2022 7:28 pm

I have to admit I don't like the EZ bleeds as it is difficult to monitor the pressure. I am mainly concerned about internal ABS unit issues so I use the hand-pump type with a big pressure dial or vacuum-type. Not heard of them damaging the M/C but not impossible.

The amount of pressure you can put on the system when boosted is higher than without and far higher than the EZ bleed. Only way to test for leaks is engine running and boosted. System may hold until boosted.

Capping and isolating is a good way to fault find.

As you are still getting leaks then that will be the issue but one question I had was have you correctly sized the M/C to the brakes. Are those brakes taking more than an E90 M/C can shove, giving you a long pedal?

Good luck! you'll get there :thumb:
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Fri Jun 24, 2022 7:38 pm

i'm starting to go off the gunson bleeder as it seems to cause problems than it solves.
i am tempted by the vacuum type bleeders though,

as for the M/C? the one i'm using is a 25mm one from an e90. & it's only about 1mm bigger than the mk3 mondeo st220 one (24mm).

tomorrow i'll try with the engine running & the system under pressure & check for leaks again (didnt do it today as i was a tad miffed to say the least) as like you say neither myself or the pressure bleeder can apply so got to be worth a look & try.

as for cappng? cant find my caps so i've got some new one's on the way.

also as for the longer peddle your making me thing the bar from the peddle may be out & need adjusting?

looks like a busy tomorrow.

i'll get there? ive got my fingers, legs & eye's crossed!!
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Fri Jun 24, 2022 7:39 pm

forgot to add, the piston size of the st220 calipers is IIRC 57/58mm so near enough same size as the e34 540i caliper conversion kit that dan sells.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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martauto
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Sat Jun 25, 2022 1:05 pm

Keep going mate, giving up is not an option now :D :D
Everything crossed for you mate.

Mart.
Only the E46 cab left now.
Just got too old.
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Sat Jun 25, 2022 6:33 pm

martauto wrote:
Sat Jun 25, 2022 1:05 pm
Keep going mate, giving up is not an option now :D :D
Everything crossed for you mate.

Mart.
cheers mart, i'm trying not to give up i really am.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Sat Jun 25, 2022 6:42 pm

well i didn't get chance to run the engine & pump the pedal to look for leaks but i did get a chance to have a good look at all the unions on the passenger side,

looks like the 45 degree swivel seat union on the front pass side caliper might be the culprit as it was slightly loose, so i nipped it up as tight as i dare, & then used the pressure bleeder again then checked it again.

turns out it was leaking slightly half way up itself, so i took it off & had a good look at it,
turns out there was a tiny hairline crack in it, & it would appear that the pressure of applying the brakes was causing the fluid to be forced out & ait to be sucked back in.

it was bought from demon tweeks, this is the one

https://www.demon-tweeks.com/uk/goodrid ... ng-243373/

as you can see not cheap!!! i've emailed them asking for either a replacement or refund, so it's wait & see what they say.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Sun Jun 26, 2022 6:16 pm

well seeing as i didnt get a chance to run the engine & check for leaks under pressure (had to fit/install & set up a new android tv for my mum) but i did have a look at the swivel seat union i took off yesterday.

it would appear that the M10 female section that screws onto the male/male is missing the tiny ball bearing that allows you to "unlock the seat so it can turn (if i'm wrong then please feel free to correct me) & it would appear (to my mind at least) that that is where the leak is coming from when the peddle is pressed.

i'm tempted to refit it & check when the engine is running & the peddle is pressed then.

i'll be honest as this is the only place i could the leak being.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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martauto
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Mon Jun 27, 2022 4:40 pm

Give it a go Steve then you will know either way mate. :D :D

Mart.
Only the E46 cab left now.
Just got too old.
steve_k
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Mon Jun 27, 2022 5:51 pm

martauto wrote:
Mon Jun 27, 2022 4:40 pm
Give it a go Steve then you will know either way mate. :D :D

Mart.
providing it stays dry tomorrow i will do, i'll also be checking the line from the bias valve to the rear T piece for any leaks.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Wed Jun 29, 2022 1:17 pm

well today (this morning actually) i might have finally found the cause of the soft brake pedal & fluid leak,

got my dad to come over & we bled the brakes the 2 man method & checked for leaks, none could be found at the time.
so, with the engine running he pumped the brake pedal while i looked for leaks, couldn't see any at the calipers or any of the unions along the line front to rear,

then..........

i checked n the engine bay & sure enough there was a nice little puddle of fluid forming on the chassis rail under the servo where the bias/proportioning valve is, each time dad pressed the peddle it would leak.

so, engine off & that valve was removed, i replaced it with a straight connector, re bled the brakes (while he made the tea & rolled some fags), started the engine up & he pressed the peddle a handful of tme & the leak was still there only a lot lot smaller,

so, stripped it out again, & it turns out the connector i had used was a flat seat one into a concave seat union, so no wonder it was dripping/leaking under pressure,

had a dig in my box of unions & fittings but i didnt have one that would fit so i've ordered a new an3 convex seat fitting & as soon as that gets here i'll fitting & try again,

happy to say though that using the 2 man method to bleed the brakes that despite the leak the peddle felt a whole lot better & was starting to feel how it should.

so, hopefully when that new union gets here & gets fitted it could be the end of my problems.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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martauto
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Wed Jun 29, 2022 4:43 pm

Hurray up mate,these fingers are hurting alot now winkeye winkeye
Sounding very encouraging Steve.

Mart.
Only the E46 cab left now.
Just got too old.
steve_k
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Wed Jun 29, 2022 5:54 pm

martauto wrote:
Wed Jun 29, 2022 4:43 pm
Hurray up mate,these fingers are hurting alot now winkeye winkeye
Sounding very encouraging Steve.

Mart.
your's are hurting? i think mine have seized :eek:

any way while i was digging in my box of fittings i found a tube of brake line sealant i'd forgotten about, tempted to use a dab of it when that new union arrives.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Sat Jul 02, 2022 6:56 pm

it was going so well today as well.

got what i thought were all the leaks sorted, bled the brakes again & got a nice firm peddle,

dropped the car down & tried the brakes & they worked fantastic.

parked it up & noticed a tiny drip of fluid on the floor, lifted the front up to find a very small dribble on the union on the passenger side caliper.

got the spanner to nip it up & the union snapped!!!! flush with the caliper as well!!
so no i'm waiting for a new caliper to arrive & then start all over again.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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Tzantushka
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Sun Jul 03, 2022 1:15 am

steve_k wrote:
Sat Jul 02, 2022 6:56 pm
got the spanner to nip it up & the union snapped!!!! flush with the caliper as well!!
so no i'm waiting for a new caliper to arrive & then start all over again.
Right about now you must be thinking - FML.
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Sun Jul 03, 2022 8:40 am

Tzantushka wrote:
Sun Jul 03, 2022 1:15 am
steve_k wrote:
Sat Jul 02, 2022 6:56 pm
got the spanner to nip it up & the union snapped!!!! flush with the caliper as well!!
so no i'm waiting for a new caliper to arrive & then start all over again.
Right about now you must be thinking - FML.
yep :| among other things lol
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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flybynite
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Sun Jul 03, 2022 8:59 am

steve_k wrote:
Sat Jul 02, 2022 6:56 pm
got the spanner to nip it up & the union snapped!!!! flush with the caliper as well!!
so no i'm waiting for a new caliper to arrive & then start all over again.
I know you went braided for all the hard lines, but what did you use for the flexible sections, were they made up from the same bits?

On my daily drivers I use HEL flex lines at the end of cunifer. That is what will be going on the E30s too. I have to admit I didn't like the idea of braided throughout when you did it but I could think of no reason why it would not work. I see Retropower used braided lines on one of theirs.

The fittings are more involved than hardlines but that shouldn't matter. This sounds like a quality issue.

I have to admit I am getting worried about doing mine because that low-rent Chinese cheese-steel is making its way into branded stuff. Not out of possibility that Demon Tweaks are buying fakes in by mistake having Goodridge on packet does not keep you safe today. I have seen fake HEL lines too and seen the consequences myself.

I have had a good run on bleed nipples recently, they leak, if you tighten them they deform and leak even more, then the snap off. At least the cheese is easy to drill out and re-tap.

Strange though that the ones I have had in my man-box of bits from 40 years ago don't leak and I can swing off them with my brake spanner and they don't bat an eyelid.
steve_k
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Sun Jul 03, 2022 10:02 am

flybynite wrote:
Sun Jul 03, 2022 8:59 am
steve_k wrote:
Sat Jul 02, 2022 6:56 pm
got the spanner to nip it up & the union snapped!!!! flush with the caliper as well!!
so no i'm waiting for a new caliper to arrive & then start all over again.
I know you went braided for all the hard lines, but what did you use for the flexible sections, were they made up from the same bits?

On my daily drivers I use HEL flex lines at the end of cunifer. That is what will be going on the E30s too. I have to admit I didn't like the idea of braided throughout when you did it but I could think of no reason why it would not work. I see Retropower used braided lines on one of theirs.

The fittings are more involved than hardlines but that shouldn't matter. This sounds like a quality issue.

I have to admit I am getting worried about doing mine because that low-rent Chinese cheese-steel is making its way into branded stuff. Not out of possibility that Demon Tweaks are buying fakes in by mistake having Goodridge on packet does not keep you safe today. I have seen fake HEL lines too and seen the consequences myself.

I have had a good run on bleed nipples recently, they leak, if you tighten them they deform and leak even more, then the snap off. At least the cheese is easy to drill out and re-tap.

Strange though that the ones I have had in my man-box of bits from 40 years ago don't leak and I can swing off them with my brake spanner and they don't bat an eyelid.
all the brake lines (hard lines & flexi's) are braided steel, the fronts from the M/C to the calipers are one piece from the T piece, the rears are the same in several sections,

the reasdon i went full braided steel was a few years ago i helped a mate build his 2.2 pinto engined mk2 escort & that was the route he took, maily due to the fact that they would in essence be "fit & forget" for a while (his view not mine),

like you i'm getting a little worried about cheap chinese steel finding it's way onto the market from the likes of demon tweeks etc. but all we can do is see.

the part that snapped was a male to male connector that sits between the caliper & the an fitting, strange thing is that they are/were the same as i'd used on the rear calipers & they are bone dry & dont leak at all,

as for bleed nipples? i've got a few m10 "speed bleeders" that i've had a good few years & they've never let me down, all ive ever needed with thse was a dab of ptfe paste on the threads & they seat & seal perfectly.

i'm really thinking of going back to the banjo bolts i had on the hi-spec 4 pots as they never leaked & i can have a good swing on the spanner & they never flinch.

i know there's light at the end of the tunnel & i'll get there.

on a lighter note, i'm thinking of painting the calipers metallic purple, mainly as it's different & i aint seen any others the same.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
steve_k
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Wed Jul 06, 2022 6:20 pm

well i got the replacement caliper fitted today along with some convex seat male fittings (same seat as the standard hose),

fitted it all up, bled the system twice only to find had a kinked/twisted line on the front,
so stripped it out, just got the line straight & it all back together & it decided to rain, so hopefully i'll get it bled the 2 man way tomorrow & be good to go.

i did notice the pedal was starting to firm up nicely as well.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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martauto
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Thu Jul 07, 2022 4:17 pm

Dare I even think about it ??
winkeye winkeye winkeye winkeye

Mart.
Only the E46 cab left now.
Just got too old.
steve_k
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Thu Jul 07, 2022 5:35 pm

martauto wrote:
Thu Jul 07, 2022 4:17 pm
Dare I even think about it ??
winkeye winkeye winkeye winkeye

Mart.
dare i?

looks like i found a source for the leak,

when i was bleeding the brakes i noticed a very small amount of fluid bubbling up past the threads on the bleed nipples,

so, i wiped it down, left it a few minuets & pumped the peddle, & left it again, i then wiped it down with some bog roll (andrex quilted of course :D ) & saw t was slightly damp, & it would appear that the bleed nipple had to problems,

1) it wasn't seating/sealing properly due to the bottom of it being flat & not pointed when compared to an old one i had in the tool box.

2) they both appeared to be too long having a complete length of 35mm,

so i'm waiting for 2 new "short" bleed nipples to get here & then i'll try again.
if it's got t*ts or wheels it's bound to be trouble...............prove me wrong.
getting oral sex off an ugly person is like rock climbing.....don't look down ;)
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