Dan W

I'm another one of these guys working on a Twin Turbo Setup. With so little room to get past the master cylinder I've been looking into my options. I think the best idea is something that street rodders do since they have such small fire walls. Some of these guys put their whole brake booster + master cylinder in the trunk. They connect to their brake pedel using a setup like what the factory used for hyd. clutches.

The benefits of this seem pretty good.
-make room for DS downpipe
-clean up engine bay
-better weight distribution

What do you guys think? Anyone done this?

JoBy

Hydroboost would be easier

http://images.google.com/images?svnu...&btnG=S%C3%B6k

http://www.hydratechbraking.com/

Dan W

Interesting gadgetry... Looks like the ticket for a big block with tall valve covers.
It won't solve my problem though. It would have to relocate the master cylinder and its brake lines to do what I need it to.

Slick Shoes

Hydroboost doesn't look much like it is gonna free up any space.

JoBy

It does. You remove the big vacuum brake booster and replace it with a hydroboost unit that has about the same diamater as the master cylinder. It all depends on where you need the extra space.


This is amaller:



Than this:

Dan W

Joby, did you use that on a thirdgen? Did the brake lines clear the top of the strut?

JoBy

No, I have not installed one on a thirdgen.

I have one in my truck, and it is smaller than the vacuum booster it replaces.

Another picture:

The Camaro booster looks like the one in the middle.


Another benefit is that you don't need engine vacuum for braking. That is good if you have a hot cam or a turbo/supercharger.

Some good reading:
http://superchevy.com/technical/chas.../0601sc_hydro/


Here the pressure reserviar is rotated away from the engine for extra room.

Shagwell

I'm also going hydra boost with my new chassis. - The astro van unit is very small. - depending on where you need the space, I agree on the swap. - You can also mount your booster/master parallel to the firewall and fab up a rocker to link it up. There's many ways to go about it.
- Remember, if you mount it lower than the calipers/wheel cylinders, you have to run the inline residual pressure valves in both front/rear lines to prevent the fluid from draining back to the mc.

Shagwell

I even seen them mounted IN the dash, parallel to the firewall. (rocker system again)

89JYturbo

Sounds like a great idea. You would still need the small clutch type Mc, but that will be much easier to work around. I had to modify the brake lines coming from my MC just to route a 2.5" DP on my simple turbo system. I can't imagin a more serious combo that would need a 3" DP off each turbocharger. IIRC there was a post a year or two ago about a black BBC firbird with twin turbos and there was no MC in site under the engine bay. I forget what he did for the brakes. I'll have to see if I can find the link.

vette59jdwl

I am seting up my braking system this way only because i wish to maintain roller bearings and power drum brakes all the way around for better rolling resistance.And also have a fool proof brake system having two seperate front brake lines and a rear line with a splitter.I wish to maintain the regular brake M/C that i have because its a single and will power the second master that will be in the trunk activated by a slave cylinder.My question however is this??? Can i run a hydro-boost if i do not have power steering and if so how do i hook this set up,UP> If i run a power booster i do realize i will have to run a vacuum line to the booster.Thats ok I will run it via rubber hoses to 1/2 copper pipe with elbows and angle joints at both ends The car that i am changing the brake system on is a 59 corvette with singl mc and lines running to earch brake not to safe for todays age thanks wayner

davesengineshop

Never thought of hydroboost. Might be the solution to my lack of room with the big block and future turbos

vette59jdwl

I have thought it over and i am going to run my original single stage Master cylinder to drive the slave in the trunk.I am now searchingn for a hydro-boost Master Cylinder and proportioning valve from a Chevy astro van I think this is the weay to go Just remember the sequence to bleed will be the same only different remember to bleed the prop valve and then the clost brake cylinder and then the next furthest till you have reached the back one on the opposite side of the brake cylinder in the trun k

daverr

iTrader: (1)

Why not use manual brakes , that's what I did with my turbo setup.

vette59jdwl

I did think of that but i put a 502 in the 59 corvette and i just thought that a little power wouldnt be a bad thing for an old fart like me 68 years young