Hydroboost idea-good?

[blowedupmotor87]

I'm (eventually) going to be going D60/14BFF 4 wheel discs on the Jimmy. I want to run a PSC pump and box with hydro-assist. I am thinking I may want to upgrade to hydroboost brakes too but, I don't want to run them all off the same pump. So, here's the idea: Since I'm deleting the A/C anyway, why not put in a power steering pump in that spot to run the hydroboost only? What do y'all think? Thanks!

 

[dremu]

Yep, seen it done. Except I think the second hydraulic pump went in place of the AIR pump, bottom on passenger side.

Becomes an issue when you start tweaking the pump for pressure and/or flow for the hydro steering, which can be too much for the steering system.

-- A

 

[mrk5]

I'm looking to run 2 pumps, also. Do you have a serpentine setup or v-belt?

On another note, you could have the hydroboost unit rebuilt and hi-flowed by Vanco for about $300. In that case the one pump would be just fine.

Although I like the 2 pump idea because I've had my pump fail on the trail. Loosing power brakes and power steering SUCKS!

 

[silveradoreb]

Whats up morgan? I have hydroboost on my truggy and it works awesome with 4 wheel discs. It stops great. After doing alot of reading it seems having vanco hi-flow and rebuild the hydroboost is the way to go. It is alot simpler than adding another pump imo. Everyone I have talked with said it works wonderful even with a stock un modded pump. Thats just my opinion. I beileve its acutally 270 or 280 for the rebuild and hi flow.

 

[Hogback Fabrication]

I beileve its acutally 270 or 280 for the rebuild and hi flow.

I can't believe that nobody has figured out how (or posted how) to modify hydroboost units

 

[mrk5]

I think it's because there are not enough people willing to take the time and/or have the right equipment. Obviously Vanco isn't going to spill the beans.

 

[blowedupmotor87]

Thanks for the info y'all! I've got V belts (can I do serpentine if I have to retain air pump?). I have to keep my air pump due to inspections. I'm getting a PSC pump/box/hydro assist. Was just thinking about brakes since IDK how happy the stock vacuum system will be with D60/14BFF four wheel discs! I kinda like the idea of a second pump, that way there's less stuff to go wrong in an individual system! So, if something goes wrong, I'll be able to still either brake or steer, 'cause it'd be a heck of a thing that's take out both! Did have one other question though, if your engine dies out, is there any residual pressure that'd give ya brakes for a second or, are they instantly manual? Thanks!

 

[iwaxmyjimmy]

Thanks for the info y'all! I've got V belts (can I do serpentine if I have to retain air pump?). I have to keep my air pump due to inspections. I'm getting a PSC pump/box/hydro assist. Was just thinking about brakes since IDK how happy the stock vacuum system will be with D60/14BFF four wheel discs! I kinda like the idea of a second pump, that way there's less stuff to go wrong in an individual system! So, if something goes wrong, I'll be able to still either brake or steer, 'cause it'd be a heck of a thing that's take out both! Did have one other question though, if your engine dies out, is there any residual pressure that'd give ya brakes for a second or, are they instantly manual? Thanks!

one or 2 pumps of the brake and your fully manual if the motor dies

 

[mrk5]

The only concern I'd have with a power steering pump in the AC position, is hood clearance. The reservoir needs to be higher than the pump, I believe. I could be wrong, so you might want to double check. I've never seen a set up where the reservoir was not above the pump, remote or not. Anyways if I'm correct, it's going to be hard to mount the reservoir above the pump.

Maybe look at doing a bracket to mount the 2nd pump off the side of the motor to the driver's side. Like what some guys have done with their York onboard air compressors.

Like iwaxmyjimmy said, you get 1 or 2 pumps. It's my understanding this the purpose of the little yellow canister mounted to the left of the master cylinder.

 

[iwaxmyjimmy]

.

Like iwaxmyjimmy said, you get 1 or 2 pumps.

he used my name

 

[blowedupmotor87]

one or 2 pumps of the brake and your fully manual if the motor dies

That is good to know! Makes me feel safer!

The only concern I'd have with a power steering pump in the AC position, is hood clearance. The reservoir needs to be higher than the pump, I believe. I could be wrong, so you might want to double check. I've never seen a set up where the reservoir was not above the pump, remote or not. Anyways if I'm correct, it's going to be hard to mount the reservoir above the pump.

Maybe look at doing a bracket to mount the 2nd pump off the side of the motor to the driver's side. Like what some guys have done with their York onboard air compressors.

Like iwaxmyjimmy said, you get 1 or 2 pumps. It's my understanding this the purpose of the little yellow canister mounted to the left of the master cylinder.

Hmm, good point, thanks for the alternate idea too! Question: Must the the reservoir be higher?

Thanks for all the info y'all!

 

[Hogback Fabrication]

The hydroboost pumps and the vacuum (gas motor) pump are the same; the only thing different is the reservoir.

The reservoir (or the highest fill point) must always be higher than the pump.

 

[blowedupmotor87]

The hydroboost pumps and the vacuum (gas motor) pump are the same; the only thing different is the reservoir.

The reservoir (or the highest fill point) must always be higher than the pump.

Hmm, well, that would present a problem. I wonder if a stock style pump (no remote reservoir) could fit in the A/C spot and still clear the hood? Or, would it be better to go off to the driver's side with it? (That would make hose routing simpler.) Anybody have pics of compressors mounted in that manner? (Just to get a general idea.) Thanks y'all!

 

[iwaxmyjimmy]

The hydroboost pumps and the vacuum (gas motor) pump are the same; the only thing different is the reservoir.

The reservoir (or the highest fill point) must always be higher than the pump.

not sure where your going with that..... since the powersteering pump is what runs hydroboost.... gas motors dont need a vaccum pump unless they've got a big cam..

 

[RockinChevy]

subscribing...

I'll need this info when I go that route later. I have some questions on mounting locations but I need to snap some pics of my engine and post up.

In '89-'91 models, the mounting brackets are cast iron, pretty much all one piece on each side of the block. Well, I have an empty void at the passenger side, where the air pump (or smog pump) is supposed to be, and is it possible to mount it in that location?
I won't mount hydroboost on the drivers side because that's where my york will be....

 

[Hogback Fabrication]

not sure where your going with that..... since the powersteering pump is what runs hydroboost.... gas motors dont need a vaccum pump unless they've got a big cam..

Poor wording on my part. The power steering pumps for hydroboost trucks and for non hydroboost trucks are the same. The reservoir is different (since hydroboost trucks have a remote reservoir) but that is the only difference.

 

[iwaxmyjimmy]

Poor wording on my part. The power steering pumps for hydroboost trucks and for non hydroboost trucks are the same. The reservoir is different (since hydroboost trucks have a remote reservoir) but that is the only difference.

i worked on a truck thursday with hydroboost and it didnt have a remote reservoir

 

[mrk5]

i worked on a truck thursday with hydroboost and it didnt have a remote reservoir

Yeah, my reservior is not remote. It is just bigger than the non hydro-boost pumps. The top is wider making the entire reservoir more square.

 

[mrk5]

subscribing...

I'll need this info when I go that route later. I have some questions on mounting locations but I need to snap some pics of my engine and post up.

In '89-'91 models, the mounting brackets are cast iron, pretty much all one piece on each side of the block. Well, I have an empty void at the passenger side, where the air pump (or smog pump) is supposed to be, and is it possible to mount it in that location?
I won't mount hydroboost on the drivers side because that's where my york will be....

That's B_to_C and I's plan for our trucks. We both have the 90s style serpentine setup and hydroboost. The brackets are cast aluminum - at least mine are - so no welding for me. I have a plan, and we'll post up pics if/when we are successful.

 

[1976Blazer76]

I'm running hydroboost and hydro assist off of one pump. I went out and got the high flow pump from AGR, I want to say for around $250. I'm also running 4 wheel discs and the brakes and steering all work great. I would try and keep it simple and just try and run the one pump when possible.