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Uprating the rear calipers
#400107
23/07/2007 21:06
23/07/2007 21:06
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Anonymous
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Anonymous
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AP Racing are kicking up a fuss about uprating the rear calipers on the kit that they will be doing for me as they dont do a caliper that allows for the handbrake. I've asked them to try and mount the standard caliper in tandem to keep the handbrake, however are there any other rear calipers out there (perhaps from a Alfa) that are a straight swop and work better?
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Re: Uprating the rear calipers
[Re: ]
#400118
23/07/2007 21:12
23/07/2007 21:12
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Joined: Dec 2005
Posts: 10,728 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,728
N.E Scotland
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Seat Leon cupra R should work and allow a vented disc (not sure what diameter). I suppose you could space it out too and fit whatever diameter you wanted.
Death-rattle-tastic
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Re: Uprating the rear calipers
[Re: mattB]
#400357
24/07/2007 02:03
24/07/2007 02:03
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Joined: Dec 2005
Posts: 9,706 Gone
Jimbo
Je suis un Coupé
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Je suis un Coupé
Joined: Dec 2005
Posts: 9,706
Gone
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You could always use a spot caliper like this one to run in series with the AP rear larger image here these are just tiny little handbrake calipers with no effect on normal braking, or do as Willwood have done and build it into the rear pad like this . I certainly wouldn't run both the AP and the coupe caliper as you'd be doubling your unsprung weight on the rear.
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Re: Uprating the rear calipers
[Re: Jimbo]
#400428
24/07/2007 03:10
24/07/2007 03:10
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Anonymous
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Anonymous
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As you know Si, I'm investigating an option for a vented rear disc shortly. I believe that this will allow a straight swap with the standard caliper for something that can accommodate the handbrake as well, but need to check it all out first . Mind you, it won't look as nice as that Wilwood one ! Phil
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Re: Uprating the rear calipers
[Re: ]
#400832
24/07/2007 16:46
24/07/2007 16:46
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Anonymous
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Anonymous
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I know your looking at things Phil. Jimbo - I'll see what AP have to say, thanks for that!
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Re: Uprating the rear calipers
[Re: ]
#400937
24/07/2007 18:05
24/07/2007 18:05
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Anonymous
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Anonymous
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This is interesting....
Is it posible to swap the handbrake for an hydraulic unit that would make it possible to use 350z or Evo brembos...??
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Re: Uprating the rear calipers
[Re: ]
#401123
24/07/2007 22:24
24/07/2007 22:24
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Anonymous
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Anonymous
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Sorry if this is a stupid question chaps, but could you not use the handbrake to run some kind of slave cylinder to drive a standard set of Brembo calipers? I'd be interested in how this turns out, having replaced all of my rear caliper workings and still having useless handbrake
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Re: Uprating the rear calipers
[Re: JohnS]
#401146
24/07/2007 22:56
24/07/2007 22:56
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Anonymous
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Anonymous
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So having the cable linked to a seperate cylinder to drive the caliper wouldn't be any good then John?
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Re: Uprating the rear calipers
[Re: ]
#401147
24/07/2007 22:58
24/07/2007 22:58
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Joined: Dec 2005
Posts: 10,728 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,728
N.E Scotland
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The handbrake has to be mechanical.
Death-rattle-tastic
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Re: Uprating the rear calipers
[Re: mattB]
#401153
24/07/2007 23:04
24/07/2007 23:04
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Anonymous
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Anonymous
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OK, so the rear Porsche brakes that look the same as the fronts actually have the handbrake mechanism attached?
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Re: Uprating the rear calipers
[Re: Jimbo]
#401319
25/07/2007 03:20
25/07/2007 03:20
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Anonymous
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Anonymous
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Well I'm going to give JohnS's VAG calipers a try with some Fiat Punto front discs (257 x 22mm vented), but I need to get all the bits together first and then see how things fit together. In theory it looks possible, but only time will tell . Phil
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Re: Uprating the rear calipers
[Re: mattB]
#401361
25/07/2007 04:03
25/07/2007 04:03
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Anonymous
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Anonymous
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I think they are the 1.8 16v ones from the facelift model. There is a 1.4 Stilo equivalent as well IIRC.
Phil
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Re: Uprating the rear calipers
[Re: ]
#401375
25/07/2007 04:24
25/07/2007 04:24
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Joined: Dec 2005
Posts: 10,728 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,728
N.E Scotland
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Hmmm, mine were for a 1.2 sporting 98 model. I'll check them tomorrow if you want?
Death-rattle-tastic
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Re: Uprating the rear calipers
[Re: mattB]
#401532
25/07/2007 14:23
25/07/2007 14:23
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Anonymous
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Anonymous
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How does the Evo etc pass the MOT then? Could go for an aston martin double caliper setup
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Re: Uprating the rear calipers
[Re: mattB]
#402932
27/07/2007 04:08
27/07/2007 04:08
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Anonymous
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Anonymous
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Hmmm, mine were for a 1.2 sporting 98 model. I'll check them tomorrow if you want? May as well check them Matt, but I don't think they will be the right size . Pick up the calipers from JohnS tomorrow, so may try offering them up on Saturday. Phil
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Re: Uprating the rear calipers
[Re: ]
#403196
27/07/2007 15:47
27/07/2007 15:47
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Anonymous
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Anonymous
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Why uprate the rear brake calipers? 90% of the braking force on a FWD car like the Coupe is required at the front AFAIK.
Dave
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Re: Uprating the rear calipers
[Re: ]
#403270
27/07/2007 16:39
27/07/2007 16:39
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Anonymous
Unregistered
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Anonymous
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Why uprate the rear brake calipers? 90% of the braking force on a FWD car like the Coupe is required at the front AFAIK.
Dave To fit bigger/better disks at the back as it might also be to do with not being able to upgrading the front brakes too much further as there isn't much room for upgrade/bigger brakes at the front due to the size of the Brembos unless you have bigger wheels fitted. I thought it was more of a 70/30 split with the braking?! Mark
Last edited by Mark_K; 27/07/2007 18:14.
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Re: Uprating the rear calipers
[Re: ]
#403336
27/07/2007 17:57
27/07/2007 17:57
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Anonymous
Unregistered
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Anonymous
Unregistered
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I'm trying to get the back of the car to behave better under braking - I thought the same and had completely standard rear brakes for a good while as a result. I then changed to textar rear pads, and there was noticeably less rear lift when braking hard. Last time I was on track I also had a siezed bias valve - so the rears were doing very little. Unless I was braking in a dead staight line things got a bit wobbly.
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Re: Uprating the rear calipers
[Re: ]
#403353
27/07/2007 18:10
27/07/2007 18:10
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Anonymous
Unregistered
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Anonymous
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When the caliper is taken from another car to go on the back, will a spacer or plate adaptor be used to attach the caliper to the hub or how will that work? If that's the case, won't it make the caliper go out of line of the hub by the width of the plate/adaptor and therefore not allow the disk to sit tightly on the hub? I'm just trying to work this out in my head...
Mark
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Re: Uprating the rear calipers
[Re: Jimbo]
#403469
27/07/2007 19:54
27/07/2007 19:54
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Anonymous
Unregistered
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Anonymous
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I see. Thanks for that. Mark
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Re: Uprating the rear calipers
[Re: Jimbo]
#403589
27/07/2007 23:25
27/07/2007 23:25
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Joined: Jan 2006
Posts: 1,618 Oswestry
Genic
My life on the forum
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My life on the forum
Joined: Jan 2006
Posts: 1,618
Oswestry
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The VAG caliper is a direct fit to bolt on to the trailing arm of the coupe, its gettig the caliper centred on the disc that might take a little while with some shims. I could be wrong , but I dont think the coop's caliper is centered on the disc, sure I have read some where..
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Re: Uprating the rear calipers
[Re: Genic]
#403602
27/07/2007 23:46
27/07/2007 23:46
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Joined: Dec 2005
Posts: 10,728 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,728
N.E Scotland
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It is centred on the disc although it has a bit of float in it either way.
Death-rattle-tastic
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Re: Uprating the rear calipers
[Re: mattB]
#403661
28/07/2007 01:26
28/07/2007 01:26
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Anonymous
Unregistered
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Anonymous
Unregistered
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Well I now have some bright green Skoda vRS calipers to try from JohnS (thanks !). At first glance, this isn't going to be straightforward, as the slider on them is at a more pronounced angle than the Coupe ones, so may need to play around with some shims and the like. There may be some other options from an older Fiat model, so I'll have to do some investigation... I'll keep you posted . Hmm, green and Sprint Blue ! Phil
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Re: Uprating the rear calipers
[Re: JohnS]
#410754
08/08/2007 17:46
08/08/2007 17:46
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Anonymous
Unregistered
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Anonymous
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#410772
08/08/2007 18:08
08/08/2007 18:08
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Anonymous
Unregistered
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Anonymous
Unregistered
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Think it would be easier & cheaper to make up a wee braket and buy a second small caliper like jimbo suggested... Dont know if it would be possible to create a brake shoe set up inside the disc..
Last edited by 13ad13oy; 08/08/2007 18:09.
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Re: Uprating the rear calipers
[Re: JohnS]
#410939
08/08/2007 21:33
08/08/2007 21:33
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Anonymous
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Anonymous
Unregistered
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Re: Uprating the rear calipers
[Re: JohnS]
#412336
10/08/2007 15:45
10/08/2007 15:45
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Anonymous
Unregistered
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Anonymous
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Has anyone looked at whether the Alfa GT has a vented rear disc?
John, I've just serviced a brera this morning and found out it has vented rear discs.
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Re: Uprating the rear calipers
[Re: ]
#439429
20/09/2007 19:22
20/09/2007 19:22
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suba
Unregistered
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suba
Unregistered
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Update - I am getting PRETTY DAMN hacked off with AP Racing (one of their suppliers at least). They have now had the parts to make a kit for nearly three months, and have come up with nothing - not even a phone call. I last spoke to them 3 weeks ago and asked if they could give me a date for getting the kit completed by the following week, still nothing. I'm thinking I should be taking my business elsewhere - thoughts anyone?
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Re: Uprating the rear calipers
[Re: ]
#439444
20/09/2007 19:34
20/09/2007 19:34
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Joined: Dec 2005
Posts: 3,158 Near Reading
JohnS
I need some sleep
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I need some sleep
Joined: Dec 2005
Posts: 3,158
Near Reading
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Has anyone looked at whether the Alfa GT has a vented rear disc?
John, I've just serviced a brera this morning and found out it has vented rear discs. Did it have an integral handbrake in the caliper? Slight trouble with Brera is it's built on a Vauxhall platform so the historic Fiat group compatibility is partially lost.
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Re: Uprating the rear calipers
[Re: ]
#450040
05/10/2007 16:00
05/10/2007 16:00
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suba
Unregistered
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suba
Unregistered
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I’ve given this job to another company called comp brake now. After talking through the options for rear brakes this morning they seem to think that using an Audi TT V6 rear calliper would work well on the coupe and allow for the handbrake to be incorporated in the calliper. The only issue is going to be that the front end of the handbrake cable is going to be FIAT, and the rear end is going to have to be Audi. Sorting out that part is also going to be my responsibility. Can anyone advise me on what is going to be involved and who I might be able to get to do the work?
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Re: Uprating the rear calipers
[Re: JohnS]
#450045
05/10/2007 16:15
05/10/2007 16:15
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Joined: Dec 2006
Posts: 3,927 The Faringdon Folly
oxfordSteve
Forum is my job
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Forum is my job
Joined: Dec 2006
Posts: 3,927
The Faringdon Folly
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Slight trouble with Brera is it's built on a Vauxhall platform so the historic Fiat group compatibility is partially lost.
That's not right is it??
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Re: Uprating the rear calipers
[Re: ]
#450057
05/10/2007 16:40
05/10/2007 16:40
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Joined: Dec 2005
Posts: 3,158 Near Reading
JohnS
I need some sleep
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I need some sleep
Joined: Dec 2005
Posts: 3,158
Near Reading
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I’ve given this job to another company called comp brake now. After talking through the options for rear brakes this morning they seem to think that using an Audi TT V6 rear calliper would work well on the coupe and allow for the handbrake to be incorporated in the calliper. The only issue is going to be that the front end of the handbrake cable is going to be FIAT, and the rear end is going to have to be Audi. Sorting out that part is also going to be my responsibility. Can anyone advise me on what is going to be involved and who I might be able to get to do the work? Urm the TT V6 rear caliper is what Phil is using - same as the vRS. The handbrake cable will work as both calipers are lucus/girling fitment.
Former low boost hero - 616BHP@1.5 bar. 2.4 20VT RIP
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Re: Uprating the rear calipers
[Re: JohnS]
#450063
05/10/2007 16:50
05/10/2007 16:50
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suba
Unregistered
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suba
Unregistered
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Sweeeeeeet!
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Re: Uprating the rear calipers
[Re: ]
#450076
05/10/2007 17:24
05/10/2007 17:24
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Truffle
Unregistered
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Truffle
Unregistered
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Sweeeeeeet! Duuude!
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Re: Uprating the rear calipers
[Re: ]
#450112
05/10/2007 18:13
05/10/2007 18:13
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Joined: Dec 2005
Posts: 12,295 Sandhurst
Begbie
Ex El Presidente
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Ex El Presidente
I AM a Coop
Joined: Dec 2005
Posts: 12,295
Sandhurst
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Sweeeeeeet! Duuude! and theeeeeeeeeeeeeeeen?
Your car is Usain Bolt with wellies
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Re: Uprating the rear calipers
[Re: oxfordSteve]
#450113
05/10/2007 18:14
05/10/2007 18:14
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Joined: Dec 2005
Posts: 3,158 Near Reading
JohnS
I need some sleep
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I need some sleep
Joined: Dec 2005
Posts: 3,158
Near Reading
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Slight trouble with Brera is it's built on a Vauxhall platform so the historic Fiat group compatibility is partially lost.
That's not right is it?? Yes - that;s right. The hubs etc are vauxhall platform based, so the rear caliper may not be compatible at all. You can tell the hubs are Vauxhall based as they've moved to vauxhall alloy fitment and new brera and 159 alloys won't fit a 156, GT, GTV etc. John
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Re: Uprating the rear calipers
[Re: Begbie]
#450116
05/10/2007 18:16
05/10/2007 18:16
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Highwayman
Unregistered
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Highwayman
Unregistered
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I have a plan for the handbrake cable Si, as soon as I get a chance to have a look at it . Hoping to find some time for the next phase of my rear brake development project this weekend. Phil
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Re: Uprating the rear calipers
[Re: ]
#450125
05/10/2007 18:24
05/10/2007 18:24
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suba
Unregistered
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suba
Unregistered
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goody - keep me informed and I'll do the same!
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Re: Uprating the rear calipers
[Re: JohnS]
#450150
05/10/2007 18:59
05/10/2007 18:59
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Joined: Dec 2006
Posts: 3,927 The Faringdon Folly
oxfordSteve
Forum is my job
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Forum is my job
Joined: Dec 2006
Posts: 3,927
The Faringdon Folly
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Slight trouble with Brera is it's built on a Vauxhall platform so the historic Fiat group compatibility is partially lost.
That's not right is it?? Yes - that;s right. The hubs etc are vauxhall platform based, so the rear caliper may not be compatible at all. You can tell the hubs are Vauxhall based as they've moved to vauxhall alloy fitment and new brera and 159 alloys won't fit a 156, GT, GTV etc. John Ah, sorry, I misunderstood the first comment, I thought it was being said that the Brera itself was based on a Vauxhall platform, rather than just the rear brakes.
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Re: Uprating the rear calipers
[Re: ]
#478017
08/11/2007 01:31
08/11/2007 01:31
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suba
Unregistered
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suba
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#486249
17/11/2007 00:16
17/11/2007 00:16
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suba
Unregistered
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suba
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#486265
17/11/2007 00:30
17/11/2007 00:30
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Matty
Unregistered
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Matty
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#486283
17/11/2007 00:52
17/11/2007 00:52
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suba
Unregistered
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suba
Unregistered
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Now where the F*ck is my wallet!
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Re: Uprating the rear calipers
[Re: ]
#486292
17/11/2007 01:06
17/11/2007 01:06
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Joined: Dec 2005
Posts: 10,728 N.E Scotland
mattB
Club member 6
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Club member 6
I AM a Coop
Joined: Dec 2005
Posts: 10,728
N.E Scotland
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Looking good Si. That's a damn decent effort you've put into getting this developed. What they gonna cost? I have no will power.
Death-rattle-tastic
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Re: Uprating the rear calipers
[Re: mattB]
#486315
17/11/2007 01:26
17/11/2007 01:26
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suba
Unregistered
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suba
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#486328
17/11/2007 01:47
17/11/2007 01:47
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Nobby
Unregistered
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Nobby
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#486334
17/11/2007 01:53
17/11/2007 01:53
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davidub
Unregistered
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davidub
Unregistered
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Re: Uprating the rear calipers
[Re: ]
#486560
17/11/2007 18:47
17/11/2007 18:47
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Kenno
Unregistered
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Kenno
Unregistered
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Si get them to buy a better camera! Focussing is pants. Is the front caliper in a carbon effect??
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Re: Uprating the rear calipers
[Re: ]
#486563
17/11/2007 18:54
17/11/2007 18:54
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suba
Unregistered
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suba
Unregistered
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Nothing's been anodized yet ken.
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