Brake bracket Qestion.


F

freewilly

Member
Joined
Feb 21, 2008
Messages
242
i've always wanted to fit a 4 pot caliper to my std ek9 rims from day 1 i got my car. Budget has always been an issue. i've done many readings from various forums . found out that the closest thing that will do the job is a 4pot from a rx7 fc.

I want to know if making a bracket like this is safe/proper?
this is from SS Works which is fitted it to it's famoust ssworks crx.
but ss works is using a caliper from a nissan r32 gtr. which will only 16" will clear

$ssworks.jpg
 
that a bit ott in my opinion but you would want to be sure the bracket is steel. i wouldnt trust aluminium, it breaks easily and doesnt take stress like that well
 
i'll be using 7075 t6 al.1/2" thick .the toughest/strongest aluminium available.
i have full confidence with the bracket but not very sure about the mounting point of the caliper.

any structural/mechanical engineers around???
 
This is very common design used on most big brake kits. I had a 300mm AEM big brake conversion on my civic coupe which worked fine for 3-4yrs. After that time the aluminium bracket was shot, having been pebble dashed with road debris for 20k miles, the paint was completely removed and the aluminium began to pit and de-laminate.
 
so i guess steel would be a much better option.
though the the aluminum would save weight.

the caliper bolt holding the bracket would not be a problem then.?
 
I was researching this and found that there will be less stress on the bracket and you should be worrying about the bolts that hold the caliper to the bracket and the bracket to the car, although of course you still want to make it as strong as possible, the aluminium you stated will be more than enough. This came from a worker at AP Racing.

Another point that I was told to take into consideration is aluminium calipers and steel brackets which will start to rust quickly unless treated.
 
i will be using shear bolts in replacing the caliper's original bolts as they are tension botls. the OEM bolts will remain as the knuckle bolts.

it's good to know that the aluminium bracket will hold. guess i'l have to inspect then from time to time. i might also powder coat them.
 
All the custom brackets we make for out 4 pot brake kits are supplied with Aluminium brackets. They're more than up to the job of coping with the stresses and strains of the calipers.
The interesting design of the bracket however may be a different matter. I'd be concerned about the forces being excerted on the outer 2 arms, and want to make sure they were thick enough to cope with them.
 
freaky.. what series aluminum are wilwood using and how thick are they ??
what about the bolts? are they shear or tension bolts?
 
You must log in or register to reply here.
Back
Top