budget big brake kit finished

hIGGI · 06-12-2008, 09:24 AM

Ok, here it is

Last year (or even sometime before, who knows

) i have got Brembo 4 piston calipers from some old BMW (740 or so?). Same or very similar calipers which are on GTR, SentraR, 350Z, WRX STI or who knows what other cars...... 40 and 44mm piston size, aluminium calipers.

Got them basically for free.
I started searching for some cheap brake rotors and ended up using BMW X5 rotors 330x30mm. Had to drill new holes for 114x,3 bolt pattern, but that was basically all.

Adapters for fitting calipers were made by friend, steel and heavy, but it works....

Size of pistons in calipers does matter and pedal feel went shit. Time to upgrade to S5 TII brake booster and mazda 929 master cylinder. That fixed pedal feel a lot, removing brake balance valve put more pressure into rear brakes and car was ok to drive, but you could feel front is still too big compared to stock rear.

This year, i got for free Mustang rear rotors, which are our bolt pattern and size 300x20mm. Making adapter for moving out stock caliper was all it needed and today i finally got it all mounted on the car, works without any problems so far, few trackdays will prove it soon

Pictures of front :

http://rx7cz.net/photos/workshop151/
http://rx7cz.net/photos/workshop153/

Pictures of rear :

http://rx7.cz/gallery/?Qwd=./rearbra...v=thumbs&Qis=M

06-12-2008, 09:24 AM	#1
hIGGI Rotary Fan in Training Join Date: Mar 2008 Location: Czech Republic Posts: 78 Rep Power: 18	budget big brake kit finished Ok, here it is Last year (or even sometime before, who knows ) i have got Brembo 4 piston calipers from some old BMW (740 or so?). Same or very similar calipers which are on GTR, SentraR, 350Z, WRX STI or who knows what other cars...... 40 and 44mm piston size, aluminium calipers. Got them basically for free. I started searching for some cheap brake rotors and ended up using BMW X5 rotors 330x30mm. Had to drill new holes for 114x,3 bolt pattern, but that was basically all. Adapters for fitting calipers were made by friend, steel and heavy, but it works.... Size of pistons in calipers does matter and pedal feel went shit. Time to upgrade to S5 TII brake booster and mazda 929 master cylinder. That fixed pedal feel a lot, removing brake balance valve put more pressure into rear brakes and car was ok to drive, but you could feel front is still too big compared to stock rear. This year, i got for free Mustang rear rotors, which are our bolt pattern and size 300x20mm. Making adapter for moving out stock caliper was all it needed and today i finally got it all mounted on the car, works without any problems so far, few trackdays will prove it soon Pictures of front : http://rx7cz.net/photos/workshop151/ http://rx7cz.net/photos/workshop153/ Pictures of rear : http://rx7.cz/gallery/?Qwd=./rearbra...v=thumbs&Qis=M