Brembo caliper refurb not gone to plan
07 October 2016, 01:06 PM
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Brembo caliper refurb not gone to plan
So i decided it was time to refurb all the calipers.......
New piston seals, dust seals, bleed nipples (brake parts international parts)
Stripped and cleaned, helicoiled all the threads front and rear, new bolts, hel braided lines and painted with vht paint.
Reassembled everthing and bled near 1.75ltr of fluid through, i should mention that the reservoir did not drop, all lines were capped while i worked on the calipers.
In a nutshell i basically have no pedal, although it could be pumped up till firm.
Ive had the brake bled a futher 2-3 times, the pedal has come up slightly but still no where near it used to be
Any suggestions?
New piston seals, dust seals, bleed nipples (brake parts international parts)
Stripped and cleaned, helicoiled all the threads front and rear, new bolts, hel braided lines and painted with vht paint.
Reassembled everthing and bled near 1.75ltr of fluid through, i should mention that the reservoir did not drop, all lines were capped while i worked on the calipers.
In a nutshell i basically have no pedal, although it could be pumped up till firm.
Ive had the brake bled a futher 2-3 times, the pedal has come up slightly but still no where near it used to be
Any suggestions?
08 October 2016, 02:23 PM
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08 October 2016, 02:26 PM
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08 October 2016, 04:51 PM
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In no way am I saying you're incompetent pal but if your brakes are not right after you've had a do and your still unsure why they are not efficient get it trailered to a competent garage to sort as it is a matter of life and death when it comes to brakes don't risk it mate be responsible and do the right thing by letting a well known competent garage with positive feedback sort it for you less headache and money and you'll have assurance it's right aswell and drive your high performance car with confidence in motion 
08 October 2016, 06:45 PM
#7
2-man method, Subaru sequence is pretty full-proof. Are you actually seeing air bubbles when bleeding the calipers or is it all clean fluid? How are you pumping 1.75ltrs if the reservoir is not dropping? Or are you saying it's not dropping when you apply the brakes afterwards?
You either still have a lot of air in the system and are not bleeding them properly or you have an air leak - check that your hoses are fully tight at either end and that you are nipping the bleed nipples back up fully.
You either still have a lot of air in the system and are not bleeding them properly or you have an air leak - check that your hoses are fully tight at either end and that you are nipping the bleed nipples back up fully.
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08 October 2016, 07:33 PM
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Mine was like this after all the calipers were removed. Just took a few goes to get all the air out then pedal was solid.
Last edited by InTurbo; 08 October 2016 at 07:34 PM.
08 October 2016, 08:59 PM
#9
i had a devil of a job bleeding my big porsche brembos when i unintensionally let the fluid pot empty recently - must have bled them 5 times and pulled air out everytime- i found slooooow pedal pushes rather than the fast method i had been using worked best -obviously using 2 people and bleeding all 4 brakes in order -check your bleed pipe is getting a good seal too or your letting air IN at every push...
09 October 2016, 03:36 PM
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In no way am I saying you're incompetent pal but if your brakes are not right after you've had a do and your still unsure why they are not efficient get it trailered to a competent garage to sort as it is a matter of life and death when it comes to brakes don't risk it mate be responsible and do the right thing by letting a well known competent garage with positive feedback sort it for you less headache and money and you'll have assurance it's right aswell and drive your high performance car with confidence in motion
Again its just not near where it should be, the car can be driven safely, just not flat out!
09 October 2016, 03:42 PM
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2-man method, Subaru sequence is pretty full-proof. Are you actually seeing air bubbles when bleeding the calipers or is it all clean fluid? How are you pumping 1.75ltrs if the reservoir is not dropping? Or are you saying it's not dropping when you apply the brakes afterwards?
You either still have a lot of air in the system and are not bleeding them properly or you have an air leak - check that your hoses are fully tight at either end and that you are nipping the bleed nipples back up fully.
You either still have a lot of air in the system and are not bleeding them properly or you have an air leak - check that your hoses are fully tight at either end and that you are nipping the bleed nipples back up fully.
Nearly 2ltrs i have used bleeding, i think the garage also used near the same amount.
Ill check connections for air leaks but its not likely.
09 October 2016, 03:46 PM
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Im also not 100% that the seals used in the piston chambers are doing their job correctly. Tempted to rebuild using new Brembo seals or using old ones as they were in perfect condition as were the pistons themselves
09 October 2016, 03:54 PM
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i had a devil of a job bleeding my big porsche brembos when i unintensionally let the fluid pot empty recently - must have bled them 5 times and pulled air out everytime- i found slooooow pedal pushes rather than the fast method i had been using worked best -obviously using 2 people and bleeding all 4 brakes in order -check your bleed pipe is getting a good seal too or your letting air IN at every push...
09 October 2016, 04:33 PM
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i have told the guy to pm me and I will tell him a sure way to bleed the brakes but alas nothing from him !!!!
that way he would know if the seals etc are working
that way he would know if the seals etc are working
09 October 2016, 04:55 PM
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Defo let us know how you get on
10 October 2016, 12:37 AM
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10 October 2016, 12:39 AM
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10 October 2016, 08:53 AM
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Looks like it may be the case, just cant understand why!
Im also not 100% that the seals used in the piston chambers are doing their job correctly. Tempted to rebuild using new Brembo seals or using old ones as they were in perfect condition as were the pistons themselves
Im also not 100% that the seals used in the piston chambers are doing their job correctly. Tempted to rebuild using new Brembo seals or using old ones as they were in perfect condition as were the pistons themselves
10 October 2016, 06:01 PM
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I could be talking crap, but if the next bleed does nothing im going to put genuine brembo back in.......did recall reading on nasioc some time back that aftermarket piston seals should be avoided
02 December 2016, 05:56 PM
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Just a quick update on this.....
Have tried bleeding twice using Nikons method, but no better.
Driving to work one day and pulled a full lock right at 5mph to park in a spot and the pedal dropped almost to the floor!
So im probably getting some movement from a worn bearing causing the extra travel.
Now in the process of fitting 2 new NTN bearings and rebuild my front arms with super pro bushs while im at it!
ill keep you updated..... ill eventually change the rear bearings also , to rule out any movement in the back
Have tried bleeding twice using Nikons method, but no better.
Driving to work one day and pulled a full lock right at 5mph to park in a spot and the pedal dropped almost to the floor!
So im probably getting some movement from a worn bearing causing the extra travel.
Now in the process of fitting 2 new NTN bearings and rebuild my front arms with super pro bushs while im at it!
ill keep you updated..... ill eventually change the rear bearings also , to rule out any movement in the back
02 December 2016, 07:38 PM
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too be really honest if he has bled the brakes the way I told him then he has an issue with something as I have bled many systems and never had an issue....
as you say bearings would have no impact on the braking system
as you say bearings would have no impact on the braking system
02 December 2016, 07:42 PM
#28
If youbhave such an expert way of bleeding them why not post it up and help everyone out?
