hydroboost no accumulator ? - Chevelle Tech
Brakes, Suspension & Steering Conversion questions & more.

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  • 2 Post By senna
  • 3 Post By red68chevL
  • 2 Post By Old Bear
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post #1 of 11 (permalink) Old Nov 29th, 19, 11:24 PM Thread Starter
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jim
 
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hydroboost no accumulator ?

im looking at a used hydroboost unit. it has no accumulator on it ,all the units i see have one on it.
i understand i will have a hard brake pedal without the motor running . are these units any good ?
it has the billet firewall plate and braided line kit . thanks
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post #2 of 11 (permalink) Old Nov 29th, 19, 11:43 PM
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Troy
 
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Re: hydroboost no accumulator ?

From what I understand, without an accumulator if you lose engine power there is no reserve boost to assist stopping the vehicle.

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post #3 of 11 (permalink) Old Jan 10th, 20, 8:52 PM
Steve
 
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Re: hydroboost no accumulator ?

I am in the middle of taking my Hydro out and replacing it with a regular booster and MC. My carb would load up, now rebuilt, and I wouldn't have any brakes once the car stalled. Hated this system. I don't know why someone would want this type of system. It scared me when I had nothing as far as brakes.
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post #4 of 11 (permalink) Old Jan 11th, 20, 12:03 AM
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Eddie
 
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Re: hydroboost no accumulator ?

I have hydroboost on my Cutlass. I've been having some issues with ignition and engine shut off few times on me when I was test driving, I had no issues stopping the car. The pedal was normal, not hard at all, actually I didn't even think about it until I've seen this thread.
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post #5 of 11 (permalink) Old Jan 12th, 20, 8:17 PM
Steve
 
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Re: hydroboost no accumulator ?

Eddy I absolutely hated the system. It was on the car when I bought it. Either mine was faulty or it wasn't hooked up correctly. Either way its off the car. I have a small block, disc from drum rear so I didn't see the need for it. Its not like I didn't have any vacume and needed this system. If anyone wants one, let me know, send me an email.
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post #6 of 11 (permalink) Old Jan 12th, 20, 10:57 PM
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Scott
 
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Re: hydroboost no accumulator ?

Quote:
Originally Posted by Cambird View Post
Eddy I absolutely hated the system. It was on the car when I bought it. Either mine was faulty or it wasn't hooked up correctly. Either way its off the car. I have a small block, disc from drum rear so I didn't see the need for it. Its not like I didn't have any vacume and needed this system. If anyone wants one, let me know, send me an email.
This is really stunning. I put one on my car for the exact reason you complain about it. I had a really hard pedal with the vacuum Booster, had a SBC 327, big cam, low speed vacuum was terrible. Hydroboost completely solved the problem.

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post #7 of 11 (permalink) Old Jan 13th, 20, 1:00 AM
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Gale & his cats
 
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Re: hydroboost no accumulator ?

JPVelle
I would look for a unit with the accumulator.

Here is a discussion on switching to Hydroboost.
Conversion to Hydro Boost Brake System - 1970 El Camino
https://www.elcaminocentral.com/thre...3#post-2513942

Here is a discussion on Cutlass and hydroboost.
https://www.chevelles.com/forums/16-...ss-unreal.html
Maybe there is a solution for CamBird there. Possibly in discussions about pedal leverage fulcrum and bore sizes.

Old Bear - Doing fine with my hydroboost conversion.
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post #8 of 11 (permalink) Old Jan 13th, 20, 6:27 PM
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Ed
 
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Re: hydroboost no accumulator ?

My hydra-boost is maybe the best driveability improvement I've done to my 65. You do need a unit with the accumulator. I use a unit from an Astro Van and a pump from a 3500 Van - with 2 return nipples. I used stock mid 80's Buick Le Sabre pressure hoses for the diesel engine and they are a direct fit.

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post #9 of 11 (permalink) Old Jan 14th, 20, 2:08 PM
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Chris
 
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Re: hydroboost no accumulator ?

Quote:
Originally Posted by jpvelle View Post
im looking at a used hydroboost unit. it has no accumulator on it ,all the units i see have one on it.
i understand i will have a hard brake pedal without the motor running . are these units any good ?
it has the billet firewall plate and braided line kit . thanks


having had a recent major engine failure I would strongly recommend against this purchase. I too have a hydro-boost system. my engine failed at approx. 80mph, I would have liked to stopped faster. As a result I picked up a new hydro-boost with a oversize accumulator, it came off a 2005 Yukon XL.
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post #10 of 11 (permalink) Old Jan 14th, 20, 3:54 PM
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Jeff
 
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Re: hydroboost no accumulator ?

Quote:
Originally Posted by GoFast Beaumont View Post
having had a recent major engine failure I would strongly recommend against this purchase. I too have a hydro-boost system. my engine failed at approx. 80mph, I would have liked to stopped faster. As a result I picked up a new hydro-boost with a oversize accumulator, it came off a 2005 Yukon XL.
Exact same one I'm running on my 64, big accumulator. Have had my engine stall on me a couple times while tuning it but has been nothing but awesome since then. Running sticky 255/40/17s with cheap pads and stock 70's style rotors, can easily pick you up out of the seat or completely lock them up.
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post #11 of 11 (permalink) Old Jan 14th, 20, 9:57 PM
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jackie
 
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Re: hydroboost no accumulator ?

Just get a Hydo-Boost with the accumulator. Problem solved.

I love my Hydro-Boost.
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