FN2 brake master cylinder upgrade options? - Civinfo
 
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post #1 of 4 (permalink) Old 5th March 2013, 10:06 Thread Starter
 
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FN2 brake master cylinder upgrade options?

hi there,
I installed Evo9 brembo calipers on my FN2 + custom 330mm 2-part rotors, blue stuff pads. The feel is good and I can feel the potential, but I always need to double tap the brake pedal to presurize calipers.The pistons on Brembos are about 30% bigger so there is need for more brake fluid in calipers. Here are the specs (evo brembos vs stock FN2):

FN2 stock 1pot (dia: 54):
Total piston area per caliper: 45,78 cm2
Total pad area per caliper: 142 cm2
----------------------------
Evo7-9 Brembo 4pot (dia: 46, 40):
Total piston area per caliper: 58,34 cm2 (+27%)
Total pad area per caliper: 196 cm2 (+38%)

As you can see the brembos have huge potential over the stock FN2 calipers, but need more brake fluid. The question is what can I do to improve pedal feel? Can anyone advice what brake master cylinder should I use / where to buy it?

Another possible solution would be some kind of pressure regulator in calipers (banjo bolts):


This should keep more brake fluid inside the calipers and so reduce the need of double tap the brake pedal = make the pedal firm.

anything else?

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post #2 of 4 (permalink) Old 5th March 2013, 10:19
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I'm sure someone else will be along to answer your question regarding the master cylinder but I assume you have braided lines already? they will much improve pedal feel
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post #3 of 4 (permalink) Old 5th March 2013, 10:46 Thread Starter
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yes, I have DoLuck braided lines all around. I've been bleeding brake fluid several times to by 100% there is no air inside the system. I've made about 7000miles since I installed the BBK so it is not a question of bedding them (rotors/pads) in. Maybe I should try to use some better pads, for example DS2500..
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post #4 of 4 (permalink) Old 5th March 2013, 12:40
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I think stoneys got this setup.
Give him a shout.



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