Hydraboost too high of Pressure?

[InMotionJosh]

I am working right now with both hydratech and wilwood for a brake setup.

I currently have the Wilwood Superlite 6 and Superlite 4 front and rear brake setup. I am going to be running a hydraboost along with the wilwood master cyl that was recomended by my contact at hydraboost. I talked to Wilwood today and they said that with the hydraboost you will get about 2400psi of pressure and wilwoods calipers are only designed for 12-1300psi and that if i use this combination I will destroy the brakes. Anyone have any input on this? I was told that i should find a way to regulate the pressure but he would not give me an recomendations.

Please help.

[1968CamaroSS_Sam]

I was thinking on going HB. I am running Z06 brakes. I don't know anything about what it handles pressure wise. Anyone know? I didn't even think of this. Thought that most all systems will have similar pressures.

[ProdigyCustoms]

Wilwood is designed for manual brake usage. I have run hydroboost with them but it does tend to make them hyper sensitive.

[silver69camaro]

Maybe reduce the fluid pressure to the hydroboost unit to decrease force output to the master cylinder?

[InMotionJosh]

Wilwood is designed for manual brake usage. I have run hydroboost with them but it does tend to make them hyper sensitive.

I understand hypersensitive but Wilwood is saying it will destroy my calipers. Anythoughts?

[CarlC]

Why not use an MC with a larger piston area?

What is the piston size of the Wilwood?

[terryr]

I think 2400 is high. I put a hydroboost in a car and read the pressure relief opens at 1600psi. Pressure at the caliper would depend on ratio of master cylinder to caliper sizes.

[resto-mod]

Brake pressure is variable. The harder you press, the more pressure applied. Is Wilwood afraid that at max pressure it will crush the rotor or shatter the caliper? I guess I don't get why their telling someone the pressure is too high. If the brakes lock up at 1900 psi, it shouldn't matter how soon you get to that pressure. The only thing I've been told to be aware with the Hydro is... your pedal touch is very sensitive.

[CarlC]

I'm confused by your answer. You say it "shouldn't matter how soon you get to that pressure," and in the next sentance you state "I've been told to be aware with the Hydro is... your pedal touch is very sensitive."

What do you mean by "how soon" vs. a sensitive pedal?

[resto-mod]

The hydroboost makes the brake pedal more sensitive than with just power discs w/ a booster. You can't be as firm with your foot. I guess I would describe it as "pedal travel". For example, with manual brakes it seems as though you may have 6" of travel to lock up the brakes, power feels more like 3-4 inches, and with HB it shrinks that travel to about 2-3 inches. The pressure applied to lock up the brakes would be the same at the brake, but not between your foot to the pedal. Does that help describe it better?

[andrewb70]

Manual brakes rule!

Andrew

[6'9"Witha69]

A properly sized manual MC will work wonders, remove excess consumption from your engine, simplify the design and clean up the underhood appearance. All pros.

Cons, dunno. Perhaps people with weak legs will have issues.

[andrewb70]

A properly sized manual MC will work wonders, remove excess consumption from your engine, simplify the design and clean up the underhood appearance. All pros.

Cons, dunno. Perhaps people with weak legs will have issues.

I totally agree. I just installed a $30 MC from a 1977 Malibu on my GTO and without a great deal of leg effort I can generate 800psi at the front calipers. I can spike the pressure above 1200 psi if I was really stepping on the brake pedal. If the pedal effort turns out to be too much, I am going to get the new Wilwood tandem 7/8" bore MC.

Andrew