MINI2

Hugo · Apr 29th, 2008, 10:01 PM

Have a problem with brakes. The 1st press of the brake pedal, the pedal goes nearly to the board then the 2nd press straight after is excellent. leave it for 10 secs the pedal goes back to the board. Ran litres of fuild through them and checked for leaks, nothing.

Fittted;
JCW Cailpers and pads
R56 cross drilled discs
EBC rear discs
Mini rear pads
Goodridge brake hoses

Fitted front Calipers with discs and pads on Saturday bled the brakes which carried onto Sunday.

Rear discs and hoses arrived last yesterday fitted last night and today but the brakes are still the same as the weekend, hardly anything on 1st press of the pedal then the brakes are excellent on the 2nd. Then leave the pedal for 10secs it goes soft again.

Left it into mechanic today, who drained the 5.1 and replaced it with dot4, and they couldn't get it working. They suggested putting clamps onto the pistons then press the foot brake and if the pedal went to board it would be a Master cylinder. And it did, master cylinder is £150.

Has anyone got any other ideas before I buy a Master Cylinder?

r1_kde · Apr 30th, 2008, 07:01 AM

I know this will sound stupid but have you fitted them the correct way around with the bleed nipples at the top? if you have not then there is always an air block, this air block can't be removed if the caliper is upside down even with pressure bleed.

just check that the nipple is at the top of the caliper. simple but easy to make that mistake, if it is try us again.

My gut feeling is your caliper is the wrong way up or wrong way around

Hugo · Apr 30th, 2008, 08:51 AM

Quote: Originally Posted by r1_kde (original)

I know this will sound stupid but have you fitted them the correct way around with the bleed nipples at the top? if you have not then there is always an air block, this air block can't be removed if the caliper is upside down even with pressure bleed.

just check that the nipple is at the top of the caliper. simple but easy to make that mistake, if it is try us again.

My gut feeling is your caliper is the wrong way up or wrong way around

Thats what it is then, they are on upside down. Way to buy more brake fuild!

r1_kde · Apr 30th, 2008, 10:02 AM

Hope thats helped you then! you should only need to bleed for a few mins till firm. when done you will notice that the barakes are not that good, they will be fine after you have bedded them in. I hope you did not draw any air back in when pumping...

should be a cheep fix! and only should take about 30mins to do.

Hugo · Apr 30th, 2008, 09:58 PM

Thanks r1_kde that fixed it only took a few pumps of the pedal and each one was firm plus I got 5.1 into the system again. Couldn't believe it and braking power is superb, it feels like the rear bumper is going to pass the front bumper.

Apr 29th, 2008, 10:01 PM	#1
Hugo MINI2 Master Join Date: May 2006 Location: Norn Iron Local Time: 02:00 AM Posts: 2,527 Offline	Works brake ain't working Have a problem with brakes. The 1st press of the brake pedal, the pedal goes nearly to the board then the 2nd press straight after is excellent. leave it for 10 secs the pedal goes back to the board. Ran litres of fuild through them and checked for leaks, nothing. Fittted; JCW Cailpers and pads R56 cross drilled discs EBC rear discs Mini rear pads Goodridge brake hoses Fitted front Calipers with discs and pads on Saturday bled the brakes which carried onto Sunday. Rear discs and hoses arrived last yesterday fitted last night and today but the brakes are still the same as the weekend, hardly anything on 1st press of the pedal then the brakes are excellent on the 2nd. Then leave the pedal for 10secs it goes soft again. Left it into mechanic today, who drained the 5.1 and replaced it with dot4, and they couldn't get it working. They suggested putting clamps onto the pistons then press the foot brake and if the pedal went to board it would be a Master cylinder. And it did, master cylinder is £150. Has anyone got any other ideas before I buy a Master Cylinder?

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Apr 30th, 2008, 07:01 AM	#2 (permalink)
r1_kde JCW 210 "apparently" Join Date: Feb 2007 Local Time: 02:00 AM Posts: 241 Offline	I know this will sound stupid but have you fitted them the correct way around with the bleed nipples at the top? if you have not then there is always an air block, this air block can't be removed if the caliper is upside down even with pressure bleed. just check that the nipple is at the top of the caliper. simple but easy to make that mistake, if it is try us again. My gut feeling is your caliper is the wrong way up or wrong way around

Apr 30th, 2008, 08:51 AM	#3 (permalink)
Hugo MINI2 Master Join Date: May 2006 Location: Norn Iron Local Time: 02:00 AM Posts: 2,527 Offline	Quote: Originally Posted by r1_kde (original) I know this will sound stupid but have you fitted them the correct way around with the bleed nipples at the top? if you have not then there is always an air block, this air block can't be removed if the caliper is upside down even with pressure bleed. just check that the nipple is at the top of the caliper. simple but easy to make that mistake, if it is try us again. My gut feeling is your caliper is the wrong way up or wrong way around Thats what it is then, they are on upside down. Way to buy more brake fuild!

Apr 30th, 2008, 10:02 AM	#4 (permalink)
r1_kde JCW 210 "apparently" Join Date: Feb 2007 Local Time: 02:00 AM Posts: 241 Offline	Hope thats helped you then! you should only need to bleed for a few mins till firm. when done you will notice that the barakes are not that good, they will be fine after you have bedded them in. I hope you did not draw any air back in when pumping... should be a cheep fix! and only should take about 30mins to do.

Apr 30th, 2008, 09:58 PM	#5 (permalink)
Hugo MINI2 Master Join Date: May 2006 Location: Norn Iron Local Time: 02:00 AM Posts: 2,527 Offline	Thanks r1_kde that fixed it only took a few pumps of the pedal and each one was firm plus I got 5.1 into the system again. Couldn't believe it and braking power is superb, it feels like the rear bumper is going to pass the front bumper.

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