72 Hydroboost Installed (yeah another one)

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Apr 12, 2017 | 09:00 AM

#21

worship79

Drifting

Joined: Jul 2005

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From: The Netherlands

Quote:

Originally Posted by Lobzila

Nice write up Mooser and I have one really dumb question regarding this. Does the Hydro Boost unit require two seperate feed lines and one return? Also, would you go with a different pump if you had to do it again?
I am doing a new steering system (rack and pinion) and planning ahead on the hydroboost MC.
Thanks

I wonder where to get a pump with two return lines?

Apr 12, 2017 | 08:13 PM

#22

'75

Le Mans Master

Joined: Dec 2007

Posts: 6,422

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From: McHenry Illinois

All the GM's that came with a hydroboost had the pump with 2 returns. Mine is from a 92 GMC 3500.

Last edited by '75; Apr 18, 2017 at 04:49 PM. Reason: 3500 not 2500

Apr 13, 2017 | 07:03 PM

#23

worship79

Drifting

Joined: Jul 2005

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From: The Netherlands

Quote:

Originally Posted by '75

All the GM's that came with a hydroboost had the pump with 2 returns. Mine is from a 92 GMC 2500.

Should've thought of that myself. I think I'll get one from RockAuto then. Care to send me a picture of your pump for reference? I'm afraid GMC trucks are not so common here.

Apr 13, 2017 | 07:22 PM

#24

'75

Le Mans Master

Joined: Dec 2007

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From: McHenry Illinois

Apr 18, 2017 | 08:55 AM

#25

worship79

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Joined: Jul 2005

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From: The Netherlands

Thanks for the photo! Can't quite read the first two digits of the lower code, but I can look up the 92 GMC 2500 diesel at RockAuto.

The top return is the one from the hydroboost en the bottom from the PS?

Apr 18, 2017 | 04:38 PM

#26

'75

Le Mans Master

Joined: Dec 2007

Posts: 6,422

Likes: 591

From: McHenry Illinois

Yes, top return I used for HB and bottom is from the steering box. I was mistaken, it's from a 92 3500 gmc.

http://www.rockauto.com/en/moreinfo....147700&jsn=508

Apr 19, 2017 | 05:09 PM

#27

worship79

Drifting

Joined: Jul 2005

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From: The Netherlands

Quote:

Originally Posted by '75

Yes, top return I used for HB and bottom is from the steering box. I was mistaken, it's from a 92 3500 gmc.

http://www.rockauto.com/en/moreinfo....147700&jsn=508

Great, thanks!!

Apr 26, 2017 | 11:01 PM

#28

71bbc

Advanced

Joined: Apr 2016

Posts: 71

Likes: 8

From: Centreville, VA

Hi everybody, I have questions regarding this conversion to ask, please help.
My car is a 71 manual brake. On the firewall, I have 2 studs holding master cylinder and lower, another two bolts to go in two nuts welded on the pedal assembly bracket from inside. Now, I wanna know if you guys used existing lower nuts (or upper studs) installing the hydro unit plate?If lower holes used, then looks like I have to extend the hole more down and hydroboost pedal linkage will be in angle (compare to original rod for mc) Is this OK? Please input.

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Apr 27, 2017 | 02:38 PM

#29

worship79

Drifting

Joined: Jul 2005

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From: The Netherlands

Contact Matthew Rogers ( Tamaca1 @ aol .com); he has instructions for manual conversions.

Sep 29, 2017 | 04:08 AM

#30

Cool bean

Racer

Joined: Jan 2015

Posts: 314

Likes: 50

From: Woodbury NJ

Hi Mooser, this is a great write up! But the pictures are not displaying. Is there any chance you still have the pics? I know i can figure it out given the detail you typed, but the pics would surr help. ;-)

Sep 29, 2017 | 09:41 PM

#31

Lobzila

Pro

Joined: Feb 2014

Posts: 607

Likes: 122

I hate photobucket! Not as much as the guys here do, but for the same reason. Mooser, do you have pictures of your hose routing down to the pump? Thanks.
Also for you guys on a budget, I got a Hydroboost at a local bone yard for 17.00, made my own mounting plate, hoses were the most coming it at 79.00. Conversion is mostly done for less than 100.00. Now to see if it works.
Thanks again for your great write up Mooser, it really helped out.

Sep 29, 2017 | 10:24 PM

#32

radiotexas

Racer

Joined: Oct 2010

Posts: 412

Likes: 25

From: Sultry Steamy Muggy Humid Texas Gulf Coast

Ouch!

Thanks a lot Johnny Shaftoe! See the big red mark on my forehead, rapidly turning black, green and blue? It's a bruise from slamming my forehead with my hand after watching your braided hose cutting video. Why didn't I think of that, or why couldn't I think of that?
It works like a champ. Thanks!

Attached Images

Oct 20, 2017 | 03:08 PM

#33

worship79

Drifting

Joined: Jul 2005

Posts: 1,623

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From: The Netherlands

Quote:

Originally Posted by '75

Yes, top return I used for HB and bottom is from the steering box. I was mistaken, it's from a 92 3500 gmc.

http://www.rockauto.com/en/moreinfo....147700&jsn=508

Could it be you are not using the adjustment bracket? Because the dual return pump sure doesn't fit with it and it's not in your photo too