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Upgrading brake servo?? #394681
15/07/2007 22:00
15/07/2007 22:00
Joined: Jan 2006
Posts: 1,618
Oswestry
Genic Offline OP
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Hello , does any one know of a fiat/lancia/alfa which i could get a bigger brake servo of which would fit with out to much work OR any way of improving the original servo. Thanks G
p.s. Before any one asks , brakes have being rebuilt uprated pads and discs fitted IMHO I think the coop is under assisted.

Re: Upgrading brake servo?? [Re: Genic] #394685
15/07/2007 22:02
15/07/2007 22:02

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i agree genic but my brakes seem pants any way how did you bleed yours matey and what fluid etc?

Re: Upgrading brake servo?? [Re: ] #394692
15/07/2007 22:13
15/07/2007 22:13
Joined: Jan 2006
Posts: 1,618
Oswestry
Genic Offline OP
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I used dot 5, halfords own.All though I could be paranoid but my clutch pedal dont seem to be as good , mabye the clutch master/slave cylinder dont like it. Any way I started at the rear drivers side then passenger rear side, the passenger front then drivers front. I pumped the pedal, with a pipe in jar off the bleed nipple. G

Re: Upgrading brake servo?? [Re: Genic] #394869
16/07/2007 02:47
16/07/2007 02:47

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According to Rog@pf an alfa GTV servo is larger and more efficient but its the fact there isnt space for a larger servo on the coupe.

The small servo gives it the squishy pedal feel, itsa shame because the OEM brakes are actually quite good, they just feel naff.

Re: Upgrading brake servo?? [Re: ] #395009
16/07/2007 12:33
16/07/2007 12:33
Joined: Dec 2005
Posts: 3,158
Near Reading
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may be something to do with mixing fluids.
Brake servo is more than up to the job, if your pedal is squishy it isn't due to the servo unless yours has a particular problem


Former low boost hero - 616BHP@1.5 bar. 2.4 20VT RIP
Re: Upgrading brake servo?? [Re: JohnS] #395029
16/07/2007 14:08
16/07/2007 14:08
Joined: Dec 2005
Posts: 928
Wimbledon
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IMHO I think there is less servo assistance on the coupe than a lot of cars the same age and younger, but I prefer it like that. With the coupe I think you can be more progresive on the brakes, and less on/off like a lot of modern cars...

Re: Upgrading brake servo?? [Re: paddy] #395049
16/07/2007 15:07
16/07/2007 15:07

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Instead of uprating, could you just not replace with a new one? It might just be the old one is knackered, not needs uprating.

Hopefully you ment 5.1 fluid too, not dot 5?!

I'm in the same boat really, uprated pads, disks, hoses etc but still feels as though it's lacking something. I'm going to replace my servo with a new one and see if that improves matters.

Cheers,

Mark

Re: Upgrading brake servo?? [Re: ] #395176
16/07/2007 18:49
16/07/2007 18:49
Joined: Nov 2006
Posts: 1,580
Melbourne, Australia
Scuderia Offline
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If you do have dot 5 fluid that will be an issue. Replace it with high grade dot 4

Re: Upgrading brake servo?? [Re: Scuderia] #395212
16/07/2007 19:23
16/07/2007 19:23

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Isn't there a way of pumping the pedal after you've turned off the engine to see if it's knackered or not. Something like 5 pumps before it goes stiff is good(oo er!!), less than that you have a leak?!

I might be wrong, but I thought it was something along those lines. Hopefully someone will clarify.

Mark

Re: Upgrading brake servo?? [Re: ] #395339
16/07/2007 22:41
16/07/2007 22:41
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Posts: 1,618
Oswestry
Genic Offline OP
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sorry meant 5.1 , it could be worn. but it does have a lack of feel to it. Let us know hiow you get on with a new one mark.

Re: Upgrading brake servo?? [Re: Genic] #396376
18/07/2007 04:05
18/07/2007 04:05

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All i know is i had an evo with the brembos on and it could stop a train dead...The coupe runs similar rotas and there crap.
Imo my stock bravo brakes were better.
The rears dont do enough,and theres too much weight over the front wheels.Cast iron block doesnt help.

Re: Upgrading brake servo?? [Re: ] #398658
21/07/2007 02:47
21/07/2007 02:47
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Posts: 1,618
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Genic Offline OP
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Ok just a thought, but if there was a leak on my intake manifold it would not be producing as much vacumn. I know Jimbo had trouble with the rubber tubes between the manifold and plenum. That would effect my braking would it not??? usaully have around -0.7 bar when i let off the accelerator, is that around normal? G

Re: Upgrading brake servo?? [Re: Genic] #399511
22/07/2007 23:55
22/07/2007 23:55

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I think mine drops to -0.82bar(or there abouts) when I let off, idle should be about -0.6bar.

Cheers,

Mark

Re: Upgrading brake servo?? [Re: ] #399617
23/07/2007 02:56
23/07/2007 02:56
Joined: Jan 2006
Posts: 1,618
Oswestry
Genic Offline OP
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Genic  Offline OP
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Yeah that sounds about right thanks Mark. Have had a few ideas which might help,Have to take the engine out ;ater this year so will be able to have a look, and see what is possible. G


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