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Old 07-23-2005, 09:33 AM
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Hydro-boost Brakes?

Building up a '67 Chevy PU that originally had manual brakes. Want to go to power brakes. Interested in one of the hydro-boost units that use power steering hydraulic pressure for the brakes.

Anyone have any experience using one of these units?

I have a junkyard vacuum booster/MC/Prop Valve but I like the smaller size of the hydro-boost unit.

The engine I'm getting is from a '04 Chevy 2500HD and it has a hydro-boost unit that I'm thinking about bringing along.

Will I have any problems other than plumbing and pedal linkage?

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Old 07-23-2005, 03:49 PM
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Hydro-boost to me is a little funky but works good on larger trucks... I have a 69 C10 that I am needing to change the brake booster mainly because the tall valve covers on a BBC are a pain to remove (on driver side) because of the size of the booster... BUT...! Just the other day I saw a 65 model truck that had factory power brakes and the booster was alot smaller and mounted the same way... Might be the ticket...?

Hydro-boost is cool but the plumbing sucks for a rod...
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Old 07-23-2005, 04:29 PM
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I've got a bunch of P-30 Chevy trucks at work that have factory hydro-boost brakes-nice,small booster that never seems to cause problems.These trucks use a p/s pump with dual pressure & return fittings.All hoses look like they could be made by any shop that can make p/s hoses.You might be able to use stock linkage and mounts,with few modifacations.One thing that I think would be critical is the length of the rod from pedal to socket in booster.That will take some trial and error to get right.
Depending on your circumstances,you might want to get a complete system off a junker and adapt it to your truck or you can get all parts new from either GM or Workhorse Chassis.
Good Luck,George
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Old 07-23-2005, 09:44 PM
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hydroboost

If your engine stalls. Do you lose your brakes?
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Old 07-23-2005, 10:07 PM
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When engine is off, there is no boost, but brakes still work, same as vacuum boosted brakes.
George
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Old 07-24-2005, 09:00 AM
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Hydro-boost

After doing some web research last night, I learned that most systems have an accumulator built in that will provide one or two power assisted stops if pump fails or line breaks. That's what that little cannister thing is on the side of the unit.

I don't want to get into ABS - does anyone know if ABS controls are integrated into the hydro-boost unit?
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Old 07-25-2005, 09:59 AM
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Hydro-boost

Had some time this morning and did more web searching and found all I wanted to know (and more) about HB brake systems.

Check out www.hydratechbraking.com or www.hydroboost.com and their links.

I am definitely going to look into this further.
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Old 07-28-2005, 09:17 AM
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This is a popular setup for full size Jeeps because of limited engien room space, so check some FSJ sites. Another option is to use a 7" dual diaphragm booster. Places like MP Brakes (www.mpbrakes.com) carry them for hot rods.

The smaller booster in a 60s truck was probably made for drum brakes Bumpstick. It will be a single diaphragm and not have the stopping power of the larger disc brake booster. It will be better than manual brakes though. A small dual diaphragm is really what you need if you don't want to go Hydroboost.
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Old 08-14-2005, 03:18 PM
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hydro boost

a superior system to vacuum, just seems wierd. Ford used them on passenger cars with trailer towing packages. excellent. Am considering using it on hot rods. There are some creative people already doing this. Pedal stuff is all the same as stock.
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Old 08-16-2005, 04:27 PM
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newer mustang cobra's use the same type of system. my buddies '01 cobra has a hydrobooster.

the abs is not integrated into the mc. it is a seperate piece of equipment.
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Old 08-16-2005, 10:52 PM
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Quote:
Originally Posted by Bill Ford
Had some time this morning and did more web searching and found all I wanted to know (and more) about HB brake systems.

Check out www.hydratechbraking.com or www.hydroboost.com and their links.

I am definitely going to look into this further.
Have a look at their multimedia section. There's a clip there of them testing a 455 Olds.

I want that job!
Don
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Old 08-17-2005, 04:31 PM
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I just built in an hydroboost, because i didn't have space for an vacuum booster. I need to make all the plumbing, it needs some double inverted flare stuff. I am still looking to find the right stuff(looking at summit) wich also looks nice. Also looking for an alu HRC, instead of the stock cast iron.

I don't know how it wil brake but it looks good.




I made the alu mounting plate myself from 8 mm alu.
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