Let's talk about Hydroboost Brakes (1 Viewer)

[Megadoomer]

Just go to the junk yard. Look at 3/4 or 1 ton GM diesel trucks and pay the nice man $50 - $100 and be done with it. If you are running Drum/Disc, get a prop valve for that setting and plumb it. You will need to change the bolt holes in your firewall and tap a thread for the clevis. Make sure you get the lines with e hydro and MC. Weekend project.

 

[bobm]

Thanks Doomer. I was getting fused

 

[RUSH55]

I think it’s already been verified that the truck MC is too big even for a rear disc setup. 1-5/16” or similar.

Don’t worry, I plan on hitting the scrap yard soon and paying the nice man for a complete unit to have for parts. Always nice to have extra stuff.

 

[RUSH55]

Bosch hydroboost manufacturer recommends a 1 1/8 bore master cylinder with their booster.

Okay, I guess that either simplifies things or puts more limits on things depending on how you look at it. No use in looking for anything smaller
Without knowing of anyone already running a specific setup, gotta cross the fingers that the combination is right?

 

[bobm]

it

 

[RUSH55]

“I can’t stopstopstop...”

 

[RUSH55]

So here’s a link to the universal adapter plate on eBay someone mentioned earlier

[SR] Universal Hydroboost Anti-Spin Mounting Adapter Plate fits Bendix / Bosch | eBay

Hydroboost unit and this plate is intended for factory firewall. Universal plate for Bendix / Bosch Hybroboost unit. This generally will fit all Bosch & Bendix.

www.ebay.com

 

[RUSH55]

Here’s a link to leaking piston seal replacement and other rebuild tech -

How To: Hydroboost Rebuild / Leak Fix - Discussion

www.duramaxforum.com

 

[scrapdaddy]

That's not too bad of a price for the plate. I made my own even with the "anti spin pin" . I just cut out a 1/4" slot from the side and then welded in a 1/4" piece with just a 1/4" sticking in the hole, filed to fit. It took longer to paint than to make.

 

[J Mack]

I spent quite a bit of time on the phone with a Baer brakes engineer and I’m using 1-1/8 bore master also.



1-1/8" Remaster Left Port Gray Anodized 6801266LP - Baer Brakes - https://baer.com/Gray-Left-Port-1.125-6801266LP.html





FYI most of the early Chevy cars also use 1-1/8” masters and will bolt to the hydroboost.

1974 Nova was disc/drum.

MC36317 - 1970-74 Master Cylinder, Power Front Disc Brakes, 1-1/8

This Correct style replacement hydraulic brake master cylinder uses an iron casting for an exact match to the design of your vehicle's original equipment. Technically advanced components ensure safe and reliable braking.

www.classicindustries.com

 

[RUSH55]

I spent quite a bit of time on the phone with a Baer brakes engineer and I’m using 1-1/8 bore master also.

Made in Phoenix, AZ?? Well now I have to!

 

[scrapdaddy]

I like those fill caps on the Baer, Wilwood has four cap screws instead.

 

[RUSH55]

Wait wait wait....

Now this is just... “tits”

 

[scrapdaddy]

$$$$

 

[bobm]

That's not too bad of a price for the plate. I made my own even with the "anti spin pin" . I just cut out a 1/4" slot from the side and then welded in a 1/4" piece with just a 1/4" sticking in the hole, filed to fit. It took longer to paint than to make.

see Scraps made his only Metal

 

[RUSH55]

$$$$

 

[scrapdaddy]

Here's some cool fittings. Thanks again to J Mack and friends I bought into the Parker field repairable fittings, they are great. It's been five years or so since making my first power steering hoses and all I had to do was unscrew them, cut new length hoses and screw together with same fittings. Spendy, $36 bucks a fitting, but can be used over and over. I've got a few hoses to contend with having a pump, remote reservoir, hydroboost unit, steering box and a cooler. I would hate to run back and forth to Napa to get hoses crimped.

I use this lube, it helps assembly.

 

[riderjgs]

My head hurts...

 

[J Mack]

I had saved a few links when I was working on my system and I was going to post them here for you, unfortunately most of them are dead.


So you just get one

Custom Power Brake » Hydraulic Brake Booster Specs

Hydroboost specifications

www.custompowerbrake.com

 

[RUSH55]

Nice one Mack

Some of your earlier links in this thread have dried up also, unfortunately...