Front Discs & Calipers Upgrade

[cypriot]

Hello,

I just completed my search regarding front brake disc + brake calipers.

As I know Fiat Uno turbo front disc & calipers easy swap but I couldnt find any in my country.

I found 257.5 mm diameter ventilated front discs. These fitted to the Fiat Tempra 2.0, Fiat Tipo 2.0, Palio 1.6 16v, Fiat Doble etc. see pictures.  I will use 15" wheels and I don 't think that I 'll have space issue between calipers and wheels.

And the left front caliper which is for 257.5mm discs and it fits Tempra and Tipo.

Anyone have any opinion or advise please reply.

cheers

Ali

[cypriot]

Goodmorning,

Fiat use 2 type ventilated front disc at Tempra, one of them 240mm diameter and the other one 257,5mm

I also noticed that there is two type calipers one has 54mm piston diameter and the other one has 48mm piston

if outside of the both caliper can be fitted to the Fiat 131 (with manufactured mounting brackets) which caliper works best with oem master brake cylinder ?

cheers

Ali

[longhamrob]

I have two 131r's. They both have almost identical lightly tuned engines.
Both have had all new brake systems.
The earlier car has a standard brake system. The other has Fiat uno turbo calipers & ventilated discs on the front.
In my opinion you cannot tell the difference between them.
If i was to rebuild another 131r i would keep the standard system which is easily sufficient under normal road use.
Should you proceed with uno turbo upgrade you will need to get some brake hoses made up by hand & due to the different angle where the hose fits to the caliper, you will find the exact length of this hose is critical to avoid it rubbing on the chassis rail near the top end of the hose.
I remember this being a lot of trouble for no appreciable gain.

[POQ 131]

If i was to rebuild another 131r i would keep the standard system which is easily sufficient under normal road use.

Well said that man.
It is my experiance that the brake pressure bias regulator must be in good working order & adjusted correctly to get the most out of the brakes. Buy a new one.
My 131 has an all new  brake system, standard front discs & calipers & 132 rear discs & calipers, the pistons are stainless sleeved & all else is new. I think the disc rear is a good first option upgrade.
It stops better than my Ford with 2 spot calipers & way bigger ventilated discs. I like the feel & control of the Fiats brakes as well.
O.

[cypriot]

Hi all,

I bought 257mm ventilated disc and this morning I manage to find calipers for these discs.
The pair which I bought manufactures by ATE also it has Bendix stamp on it. They are definetly same calipers which are pictured at the link.


You can find details about these brake system. Disc, pads, calipers. These are used several different Fiat, Lancia and AlfaRomeo models. Google oem part numbers which are stated at the link

http://www.brakepartssuperstore.org.uk/contents/en-uk/d5888.html

[cypriot]

Hello,

the distance between caliper mounting holes are 100mm of these ATE calipers.

what is the distance between caliper mounting holes which calipers installed to the stub axle of stock Fiat 131 ?

Answer : oem caliper mounting holes also has 100mm distance

[cypriot]

Hello,

I just confirmed that the calipers can be fitted to the Fiat 131 stub axle (I hope I use correct word for this part. It is a part which you mount caliper on it)

for this conversion you need

a-  5mm longer caliper bolts than the Fiat 131 oem caliper bolts. (there is a long and short one each should be 5mm longer)

b- 5mm thick spacer (washer) between caliper and caliper mount.

C- this setup can be fitted with 14" steel wheels

D- you should use bigger calipers oem rubber pipes which straight fit fiat 131 steel brake pipes


left front caliper fits right front of Fiat 131 and bigger right front caliper fits left front.

with this setup oil pipes connection stay upper part as oem Fiat 131.

also center hole diameter of 257mm discs just tight fits to the oem Fiat 131 stub axle which naturally make disc to fit perfectly center.

cheers

Cyp

[sid131]

Hi Cypriot its called a "Hub" stub axle is the part where the wheel bearings go onto

[cypriot]

Hi Cypriot its called a "Hub" stub axle is the part where the wheel bearings go onto

thanks sid131 

if you or anyone have information please enlighten to me regarding following setup

first setup
front 257mm discs with ATE single 54mm pistons
rear standard drums
 

second setup
front 257mm discs with ATE single 54mm pistons
rear Fiat 124 rear discs and calipers ( 34 mm pistons not sure ) in the near future


Do I need to replace brake master cylinder ?

cheers


Cyp

[cypriot]

Hello agaion,

does anyone have cad drawings or dimensions of the Fiat 124 rear brake caliper bracket / mount and willing to share?

I need to manufacture bracket in order to fit rear disc brakes and calipers to my Fiat 131 solid axle.

cheers

Ali