My brake booster is bad about to replace it. I want to keep the pedal as stiff as possible witch means the smallest booster available. Someone on another site said the HF was the smallest booster I could get for my CRX but unclear on what size that is. I need to know what the smallest booster I can put on my car is and what year civic it comes off of.
My set up is:
Front
-1991-CRX Si front stainless steel brake lines
-1990-1993 Integra 4040 proportioning vale
-1990-1991 Civic Ex 15/16" bore master cylinder
-1996+ Integra type R calipers and brackets
-2004-TSX pads
-2007-Mini Cooper-NON-S rotors 280mm

Rear
-1991 CR-X Si rear stainless steel brake lines
-2002 EP3 Si rear calipers, pads, and rotors

 

Any info would really help this is the last thing I need to get done for the car

 

You do realize that a smaller booster will also have to travel a lot further to displace enough fluid to move the larger pistons in the larger calipers? I just put the larger calipers in my CRX Si and with the 15/16 master cylinder i have about twice the travel to get brake engagement, while its great braking power it is disconcerting to have that much slack to move enough fluid.

 

No.

Wrong.

You're confusing booster with master cylinder. Boosters are just brake assist. Not part of hydraulic brake system.


OP, you want stiffest brake possible? Just eliminate the booster entirely.

Also, if you've got too much travel in the pedal, you've still got air in the system, or your seals are bad. Or something else like bad wheel bearings are creating that extra travel.

And here's more truth: HF does NOT have a smaller booster. Same as DX.