Brembo Brake upgrade

[BigD9146gt]

Hello all, i'm installing Boxster S calipers on my 914, and i'm curious if anyone has ran across a Brembo mechanical caliper for an E brake. I think i've seen it on cars like the Carrera GT and other big dollar cars.... its usually mounted opposite of the rear caliper.

Thanks, Don.

[jpnovak]

MOst people use the Carrera rotors with the boxster calipers. REtains stock ebrake.

I have never seen any vendor that sells the mechanical clamping ebrake. They look cool though!

[BigD9146gt]

Thanks for the reply jamie, the 914 originally had the ebrake mechanism in the caliper itself, not like the separate 911 style drum brake. The base line rear boxster calipers will not accept the 24mm wide Carrera rotor, only the 20mm wide SC rear rotor.

Thanks, Don.

[jazzbass]

I didn't think you could use Carrera rotors on the rear of a 914. I thought the stock 914 rear calipers had the e-brake built into the somehow (as opposed to the drum style e brake of the 911). I neither own nor have ever worked on a 914, so this is pure speculation.

[BigD9146gt]

Chris, you can use the Carrera rotors on the rear, you need a caliper wide enough like a Carrera or Boxster S, or turbo?(not sure what years)... then the trick is mounting it. Your right about the ebrake, it is a mechanical cam that pushes on a series of rods that then pushes the inside pad against the rotor.

[jpnovak]

HMM I didn't know the 914 ebrake was so different. I don't have much experience with thier internals.

[Lukesportsman]

If you really like what you have/building, have you considered adding a small accessory caliper? I have an add on E brake caliper on on one of my cars and they were small and light.

[mjshira]

I was not aware you could use the S calipers like this. Have you tried PM'ing Bill Verburg? Not trying to make "work" for Bill but he knows brakes!

--James

[TimT]

I have carrera brakes on my 914, currently carrera discs and calipers.

I do have 944 turbo calipers that will go on it soon, with the spacers from VCI

Im not to concerned about an Ebrake, but I do recall something called a "Line Lock" that you plumb into your your brake lines. You depress the brake pedal, then pull up the Line Lock and you now have emergency brakes... The Line Lock holds the pressure in the brake lines.

I forgot who sells it though...maybe check some dune buggy places

[BigD9146gt]

Luke, thats what i'm looking for, who makes yours?

James, i'll PM him, thanks.

Tim, i considered the line lock, but those are more for dune buggy/rock crawlers that need a line lock for a few minutes before they decide their next step. Anyone i've talked to wouldn't leave there nice car parked on any slope with a line lock and consider having a relaxing dinner knowing all that is holding your car from rolling into something bad is a rubber o ring.

[TimT]

Anyone i've talked to wouldn't leave there nice car parked on any slope

Thats easy, leave the steering wheel turned so the car will just roll to the curb and stop..Thats what they taught me in Drivers Ed (the High School variety)

You rely on those rubber o-rings every single time you try to stop your car. I would hope the brake system is maintained to a point that you dont have to worry about rubber o-rings!!!

not trying to be a smart ass... but think about what happens every time you turn off your sink faucet? you have just prevented thousands of gallons of water from entering your home uninvited, and all thats hold back the deluge is a rubber washer (o-ring whatever).

If your car rolls into something what kind of damage can really be expected? I would think something easily repairable.

The last thing I would worry about is my brakes failing because of a bad o-ring, that is if your brakes are up to snuff to begin with.


some hard core race supply houses sell "residual pressure valves" that maintain a degree of pressure in the lines so you never have the pedal fall to far before you have brakes ....

I have no need for an Ebrake, but I would not worry a bit about a Line Lock

this is of course my opinion

[BigD9146gt]

Tim,

Not every parking lot where i live has a curb to turn the wheel against, and i do not wish wreck my front spoiler.

Just out of curiousity, house-hold water pressures run around 55-80psi, the pressures in a braking system can reach 1000psi. How can you compare the two? my sink has a drain for taking thousands of uninvited gallons of water to a new, invited place.

Thank you for your thoughts, but i'm giong to steer clear of line locks. Don.

[BigD9146gt]

Thank you all for your input, i'm going to make an adapter that replaces the rear wheel bearing holder plate, then extends out to hold a spot caliper like the one wilwood makes. Heres a couple CAD pics i made to show another guy on the board who has helped me a lot.

[TRE Cup]

Hi
I would be interested in those brackets. I have the wilwood spots sitting here for my 6. John Rogers fabbed up a pair of supports using them on his 914. But a more elegant bracket is nicer to install. BTW- the brembo mechanical caliper is the one they use on the Mc Claren F1 road car- cost? $1400 each!!!

[Bill Verburg]

Ate also makes calipers w/ a mechanical parking brake mechanism. Audi among other mfgs uses them.

[BigD9146gt]

Bill, thanks for the info. Do you know which Audi's use them?

TRE, no problem. Are you going to want them for the wilwood? or are you open to a different style caliper? Granted I'm going to make sure that my final caliper will not be expensive as to make this kit affordable for others seeking to do this.

[Bill Verburg]

Do you know which Audi's use them?

Probably all of them, My current S4(Ate), my last S4(Ate), my A8(Ate) and my V8 all had them.

Though it seems to me the V8 my have had Girlings, but definitely also incorporated the mech. brake in the caliper.

[BigD9146gt]

Originally posted by Bill Verburg
but definitely also incorporated the mech. brake in the caliper.

Bill, are you sure about this? I'm looking for a separate mechanical actuated caliper, not one incorporated in the rear hydrolic caliper...

[TRE Cup]

here is a picture of that wilwood install on roger's 914. Correction: this is a back view of the caliper showing the actuation lever

[TRE Cup]

oops- that is the caliper from the catalog- here is the install