hydroboost under the dash????

[CROMAN69Z28]

im gonna try it. just wondering if anyone has it yet. thats a lot of stuff in a very small amount of space. i've seen it done many times before just not with hydroboost.

[terryr]

Straight back it would be tooo long. Old dodge vans put the power brakes sideways. Maybe that would work. But then you still have to route the lines through the firewall.

[CROMAN69Z28]

yeah, to the side is the only way. im familiar with the dodge van design but its too bulky by itself. its gonna take a lot of measuring and a little bit of fab work.

[CRead01]

I have seen it done on an s10 before.

they just made a linkage to accomidate the hydroboost and master being sideways.

[CROMAN69Z28]

I have seen it done on an s10 before.

they just made a linkage to accomidate the hydroboost and master being sideways.

you see it in person or in a rag, net? googled for pics but nothing came up. there are a lot of aftermarket power brake systems made for under dash but not any good pics.

[chevelleshack]

Plan on doing the same on my 72 chevelle . That hydraboost is way to long for me to use , was looking at using the ABS electric master system , alot smaller but don't hear of anyone using it , unproven , flawed , cost ?? I would also like to see some photo's of others done just to see if i'm on the right track !
Phil

[icebird84]

https://www.pro-touring.com/forum/showthread.php?t=50843
https://static1.pt-content.com/images/pt/2008/12/CIMG0447-1.jpg

[CRead01]

you see it in person or in a rag, net? googled for pics but nothing came up. there are a lot of aftermarket power brake systems made for under dash but not any good pics.


I saw it on the net. I just did a quick look and couldn't find it but I will look some more. I kinda thought about doing this on my cruiser.

[Romulus]

im gonna try it. just wondering if anyone has it yet. thats a lot of stuff in a very small amount of space. i've seen it done many times before just not with hydroboost.

You'll need to fab up a bellcrank. ECI has a universal pedal assembly that puts the MC and MC/Vacuum Booster assembly at a 90 degree angle. I haven't found good picture either (their site has some small pictures) , but the concept is simple enough.

Like ya said, it's measuring and determining how best to run high pressure hydraulic lines (watch those leaks) Also don't forget you need to put able to get to and monitor fluid in the MC.

Been searching for a way to clean up my firewall as well.

[CROMAN69Z28]

a friend of mine did it on his '68 but he just used manual brakes. It is a very simple design but I'm gonna try it with the bigger hydro unit. (even if only so I can say my unit is bigger)

[Apogee]

It seems to me that remote master cylinder reservoirs sure would be a nice addition while you're going through the effort.

Tobin
KORE3

[oestek]

Not a hydro, but a 90 degree under-dash race setup..

https://static1.pt-content.com/images/pt/2009/01/ScavoCamaro122808s_020-1.jpg

[CarlC]

You may want to talk to someone like Paul at Hydratech to find out how much noise the booster and lines make. I would be particularly concerned about the noise emitted through the hoses due to pump vibrations and low-speed pump noises.

[CROMAN69Z28]

You may want to talk to someone like Paul at Hydratech to find out how much noise the booster and lines make. I would be particularly concerned about the noise emitted through the hoses due to pump vibrations and low-speed pump noises.

good point. i hadnt thought about that. can anyone with hydro experience comment on noise level (while bleeding brakes or steering?)

[CarlC]

That's going to be difficult to determine since the sound you want to focus on will be infected with all of the other sounds generated in the engine compartment.

The whole thing might be a non-issue, but if it was noisy....

Paul would be a good source of information. If all else fails you may want to run a test on another car before committing.

[Apogee]

Noise is one thing...a hydraulic leak is something entirely different. Cool factor aside, a 4000 psi hydro leak would really suck under a dash and could certainly break the skin or worse if you're caught unaware. There's a reason most hydro controls are kept out of passenger compartments on vehicles so equipped.

Tobin
KORE3

[CROMAN69Z28]

Noise is one thing...a hydraulic leak is something entirely different. Cool factor aside, a 4000 psi hydro leak would really suck under a dash and could certainly break the skin or worse if you're caught unaware. There's a reason most hydro controls are kept out of passenger compartments on vehicles so equipped.

Tobin
KORE3


yet another good point. thats why i love this site, someone is always looking it from another angle.

[chevelleshack]

Don't want to keep beating a dead horse here but what about the electric master cylinder ? Smaller & no possibility for noise since the pump is remote mount i would think ? But there would be a possibility of high pressure loss from the booster side ( don't know how much is there ) ? Guess trying to convince myself into getting one ! Also , i don't want to hijack here , just thought i would ask my question because i am trying to do the same thing . Just saw on wilwood's site they have come out with a new compact manual master cylinder . That thing is tiny !! Would be interested in that one if i knew what sizes i would need for six piston front & four piston rear wilwoods ( have not gotten them yet by the way ) . Frank S. , you out there ?
Phil

[terryr]

Hydroboost gets its pressure from the power steering, and that's about 1000psi. And when you're not stepping on the brakes the bypass is open so it must be close to zero.
But yes, noise might be annoying. On mine, with the radio off I can hear the hum vibrating through the firewall.