Ive fitted wilwood calipers and discs to my car, Ive only had a short blast up the road trying to listen and feel everything that has been changed-and its alot, the problem is that the padal feels to hard and the brakes dont seem to be working very well, I know that there not bedded in yet but it doesnt feel right, it actually feels worse than standard sierra brakes, the wheels willl not lock up or even attempt to, I also have an adjustable bias valve fitted which I have wound out fully but this shouldnt affect the front should it??

I have no knowledge of willwood so is it a case of bedding in??

What pads are you using? If the pads are new they almost certainly need bedding in so it will take a few progressively harder braking sessions to 'introduce' them to the discs. They often take a few hundred miles to really bed in.

[Edited on 9-8-06 by RazMan]

What master cylinder are you using?

Reason I ask is because if you use too large of a master cylinder bore, the pedal will apply fast (hard pedal feel) but with less force.

Im using standard sierra.

Hi to use 4 pot calipers whith standard rear setup wether it be drum or disk you will usualy have to use a twin cylinder bias brake setup. If you do some research on the wscc forum you will see how many people spend thier money on new 4 pot fronts and are not adviced to up grade the cylinder's or look at the bias and end up with worse brakes than what they started with. The other thing to consider is that a car of this type whith the bog standard brakes plus a set of uprated pads be it cortina or sierra will stop one of our cars with 300bhp at the same rate as the same car with £1000 a corner f3 brakes . So the upgrade on front ally 4 pot is only cosmetic nothing wrong with that but you have to take into account the rest of the setup .

Forgot to mention the one benifit of unsprung weight when fitting ally 4 pot's

cheers matt

Hi,

I've just fitted a 4 pot kit for Sierra hubs. I also felt exactly what you describe. Very wooden and no bite at all. I've now done 200 miles on them and they are starting to work really well.

I do however have a twin cylinder bias brake system fitted several months before the 4 pots.

I don't think the stiff pedal will change much but you'll find you may need less effort as they bed in.

quote:

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Originally posted by procomp
Hi to use 4 pot calipers whith standard rear setup wether it be drum or disk you will usualy have to use a twin cylinder bias brake setup. If you do some research on the wscc forum you will see how many people spend thier money on new 4 pot fronts and are not adviced to up grade the cylinder's or look at the bias and end up with worse brakes than what they started with. The other thing to consider is that a car of this type whith the bog standard brakes plus a set of uprated pads be it cortina or sierra will stop one of our cars with 300bhp at the same rate as the same car with £1000 a corner f3 brakes . So the upgrade on front ally 4 pot is only cosmetic nothing wrong with that but you have to take into account the rest of the setup .

Forgot to mention the one benifit of unsprung weight when fitting ally 4 pot's

cheers matt

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Hi nat rear sierra i usually use 0.70. front will depend on piston size's if it's verry simalar to the std cortina on combined area again i usually use 0.70 and seems to give a good range of adjustment on the bias bar . Also pedal ratio will count but i dont think that the st one is to far from ours so should be alright . IMHO .

cheers matt

PS you will definatly need to save on the unsprung weight with those big 14" on there.

[Edited on 11/8/06 by procomp]