Hydro Boost: what am I missing?

[Ralph Bartels]

what am I missing here? I’m pretty sure the push rod... if so what do I need? Also, what are the ports circled for?

Thanks!

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[RDF1]

The left one is a pressure regulator i think.. The one on the right i have no idea.. But i made a push rod out of 1/2" Stainless and turned it on the lathe till i had about 0.030" of slack. Its working good so far.

 

[toomanyhobbies]

Here you go...

https://www.tallonhydraulics.com/store/index.php?main_page=index&cPath=40_16

 

[Ralph Bartels]

Thanks for the help guys! I found a gentleman parting out an 04’ Yukon xl and picked up the entire unit including the hoses for $70. The other unit is on its way back to Rock Auto.

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[Doughnuts]

What's all involved in this swap? Been kinda curious how hard this would be to throw in my 91.

 

[Ralph Bartels]

What's all involved in this swap? Been kinda curious how hard this would be to throw in my 91.

From what I understand:
Hydro brake booster and master cylinder, brake pedal from same vehicle, a hose retrofit to send power steering fluid back to the PS pump and the time to put it all together.
There may be more but I’m not too sure.

 

[Doughnuts]

Do you need any special hose line for it? As in isn't it a high pressure hose that you have to have? Otherwise it's seems pretty straight forward .

 

[Ralph Bartels]

Do you need any special hose line for it? As in isn't it a high pressure hose that you have to have? Otherwise it's seems pretty straight forward .

Pretty sure the hoses from the original unit. I’m still researching how everything hooks up.
This is the thread I’m going off of:

http://www.gmt400.com/threads/gmt-400-hydroboost-swap.13105/

After reading through the thread again the pressure lines go from the pump to the hydro and then from the hydro to the steering box. There is a return line from the box back to the pump as well a return line from the hydro unit to the pump. You can replace your pump with a unit for the hydro setup, it has a fitting for the return or you can attach the return using a t-fitting. At least I think that’s how it works.

 

[toomanyhobbies]

I got my booster out of a 2004 escalade with 110K and it is now leaking which is a bummer. I think the brand new high end ps pump puts out more pressure and blew it out.

I got the brake pedal from a 3/4 ton '97 suburban. They are getting harder to come by.

There is lots and lots written on the internet about how to do this swap.

 

[Ralph Bartels]

I sourced mynpedal from the same vehicle, 97’ 3/4 Suburban. Where I live there isn’t a whole lot of options in the local pull-n-pay. Sometimes I find what I need on FB marketplace from people parting out vehicles.

Sorry to hear about your booster. I’ve seen rebuild kits but I have no idea the difficulty level.

How did you like the hydro upgrade?