Hello, I have civic eg6 ABS master cylinder 15/16, someone made ​​the conversion to civic si master cylinder 3/4? is smaller in diameter, but the cylinder is longer, and the booster and cylinder is bolt-on in civic eg.

I have put caliper and rotor 300mm of civic si 08 in civic eg.

Someone made ​​the conversion with brake master cyliner civic si 08?
work best?

 

What are you asking?

 

I will have better braking with the brake master cylinder civic yes 08 3/4?

 

the diameter is smaller but the cylinder is longer

 

Diameter is smaller because a smaller space will create more hydraulic pressure and thus better stopping power and brake feel. I would go with either a 99-00 SI of ITR master cylinder.

 

Worth the change? I have no other option. use the civic master cylinder if 08 or leave the eg6 15/16

 

the smaller master cylinder will net to more clamping force when applied. the bigger one will be harder to push and not clamp down as fast or hard.... you should be running a 7/8" master cylinder... everyone hypes up a bigger master cylinder is better but it is not needed in most applications.