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Author Subject: Brembos dont feel wright ?!?!?!
dannygti-6

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Post #1
Fitted fiat coupe brembos the other day along with hose's new disc's and pad's went out for a run they felt good but didnt feel quite right

1st idear
Took the abs fuse out to see what was happening and rear was locking way before the front so cleaned up compensating valve no better

2nd idear
cleaned up and fitted new discs and pads to the rear reblead whole brake system again no better

Now the only other thing i can think of is that because the 6 is lowerd is the spring in the compensating valve the right length or does it need ajusting

Any one else any idears or had the same problem

Thanks inadvance

Dan Crazy

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Posted 20th Aug 2009 at 20:39
rallyestyle

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Post #2
Did you bleed the system correctly when fitting?

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Posted 20th Aug 2009 at 20:09
dannygti-6

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Post #3
Yes bleed through Correctly i no what a pain they can be but got a good pedel no air in the system!!!

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Posted 20th Aug 2009 at 20:29
rallyestyle

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Post #4
Can you describe how it feels to brake? The ABS shouldnt really be kicking in when braking normally.

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Posted 20th Aug 2009 at 20:16
dannygti-6

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Post #5
It does not kick in when braking normally under hard braking it feels there is more stopping grip but the abs is coming in!!!

Just had the car on the brake test rollers
Fronts read 290 a piece
Rears 175 each
But n/s/r is coming on way before d/s/r

Think this problem was there before changing calipers but this has just highlighted it

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Posted 20th Aug 2009 at 21:03
vts_gav

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Post #6
try slackening the handbrake a little then winding in the rear calipers.
h/brake might have over adjusted or be stuck slightly
Posted 21st Aug 2009 at 01:59
mr swampy s16

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Post #7
Yep id say the rears arnt adjustd correctly.
Possibly one is binding maybe due to haveing a newer handbrake cable on
Posted 21st Aug 2009 at 02:04
dannygti-6

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Post #8
Right tried new cables and slackening the n/s off also wound the piston's in and out both free and move easily!!

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Posted 21st Aug 2009 at 02:51
SteviePut

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Post #9
If your car has been lowered I guess it could be the rear bias valveYes

When you think that it's supposed allow more pressure to the rear brakes when the load in the rear is increased - i.e you've got something in the boot. If the car is lowered the valve, being a mechanical device, doesn't know that it's actually lowered it just assumes there's extra load - and therefore allows extra pressure to go to the rears. This I assume could cause the ABS to kick in prematurelySmile

On a side note, if the ABS fuse is removed on a phase 3 car that is NOT fitted with the bias valve, (I think it's got EBD instead) would that mean the rear brakes will recieve the same pressure as the fronts? Anyone?

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Posted 21st Aug 2009 at 03:09
thugpuggin

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Post #10
Which wright don't they feel? Mark or Ian?

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Posted 21st Aug 2009 at 06:07
sarthe82

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Post #11
thugpuggin wrote:
Which wright don't they feel? Mark or Ian?

Laugh my ass off

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Posted 21st Aug 2009 at 06:43
dannygti-6

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Post #12
SteviePut wrote:
If your car has been lowered I guess it could be the rear bias valveYes

When you think that it's supposed allow more pressure to the rear brakes when the load in the rear is increased - i.e you've got something in the boot. If the car is lowered the valve, being a mechanical device, doesn't know that it's actually lowered it just assumes there's extra load - and therefore allows extra pressure to go to the rears. This I assume could cause the ABS to kick in prematurelySmile

On a side note, if the ABS fuse is removed on a phase 3 car that is NOT fitted with the bias valve, (I think it's got EBD instead) would that mean the rear brakes will recieve the same pressure as the fronts? Anyone?



This is what i thought!!?!?!?

Does anybody know if you cut some off the spring, or is it inside the unit because if i cut some off the spring affectivly the unit is already working more bias to the rear !!!

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Posted 21st Aug 2009 at 13:08
ash

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Post #13
How are they mounted? pics?
Posted 21st Aug 2009 at 13:33
dannygti-6

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Post #14
Mounted on normal 2 bolt fixings in to the hub with zantia v6 disc's


What was you thinking ash???

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Posted 21st Aug 2009 at 15:36
rallyestyle

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Post #15
dannygti-6 wrote:
Mounted on normal 2 bolt fixings in to the hub with zantia v6 disc's


What was you thinking ash???


They will be Pug 406 Brembo calipers then Yes Fiat Brembos dont bolt straight on Smile

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Posted 21st Aug 2009 at 17:11
dannygti-6

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Post #16
Are cool fiat bremos they are then!!!

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Posted 21st Aug 2009 at 18:31
dannygti-6

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Post #17
backed both hand braackes back off to day. The front brakes seem aa bit better but abs still seems to be coming in to early!!

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Posted 24th Aug 2009 at 20:32
willygti

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Post #18
[patronising mode] you do know that after fitting new discs and pads will take a few hundred miles to bed in properly (within that period they will inevitably feel shite/soggy/spongey), and you shouldn't do any hard braking within that bedding in period. [/patronising mode]

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Posted 25th Aug 2009 at 02:45
dannygti-6

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Post #19
ha ha yer i know they wouldnt feel wright but got a thousand miles on them now and still not wright going to try a ajustable bias valve to try and ajust it manaly

Because as i see it if you lower the car i see that the rear valve is opening constantly and not where it should be people say shorten the spring but i dont think thats where the problem is

can any one advise???Crazy

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Posted 3rd Sep 2009 at 15:17

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