Hydro-boost questions (looking for data)

[Thrashingcows]

I just back and reread your tutorial on the other site and I am now understanding what you are saying, makes sense. So I am thinking it will be a Dodge unit and MC.

I read some place where someone side not to Tee the return line into the PS return line, rather have it go directly into the reservoir?

Only issue I have seen with putting a T on the return line is that the pedal will either drop, or raise a tad when you start the motor. Based on if it has direct flow, or back pressure from the T junction. Either way I have over 100K miles on my system with no issues other then one or two leaky hoses.

More pics of the mounting studs. 3.375X3.5 bolt pattern. And if I look at the plate it cold be rotatedView attachment 1034708 View attachment 1034709

Yes you can rotate the plate, BUT it does have a keyway that would then not align with the new orientation. If you find an alignment you like, plate and HB unit, you can mark the location and just file and make a keyway like I did.

 

[70chall440]

Thanks a lot for commenting, it is all very helpful. I am really thinking of getting a Dodge (Ram) HB and a Mopar MC and working with it, problem is that i am a long way from need any brakes so I am trying to decide if I should spend the money now or later.

 

[Thrashingcows]

If you have access to the system now I'd pick it up and put it on the shelf for later. I passed on a couple spare units and I now live where there are no junkyards or pick-n-pulls that I can wander around in. And I was considering going HB on my 68 Chrysler wagon and a couple other projects as well.

 

[70chall440]

Thanks, my intention is to buy a rebuilt unit from Rock Auto verses getting one out of a scrap yard. I actually need 2 of them, one for my 71 Charger and one for my 70 Roadrunner but I have only so much "play" money to use and both of these cars are money sponges... LOL

 

[Mike67]

I am beginning to think that the system used by at least Power Brake Service (Speed Manufacturing) is a Mustang system. It puts the accumulator on the inboard side low if you want the lines up, if you rotate it then the accumulator would be outboard but the lines would be down which would make it look cleaner.

I'd really like to hear from others who have adapted a HB system for their car.

They make an adaptor that allows you to clock the HB in any direction you want.
My car was a manual brake car and was able to line up the pushrod easily though it had to be short.
I also ran a seperate return instead of a T. I have a serpentine setup that uses a GM pump w/o a reservoir.

 

[70chall440]

They make an adaptor that allows you to clock the HB in any direction you want.
My car was a manual brake car and was able to line up the pushrod easily though it had to be short.
I also ran a seperate return instead of a T. I have a serpentine setup that uses a GM pump w/o a reservoir.

View attachment 1035128 View attachment 1035129 View attachment 1035133

Very clean install. That looks like a Hydratech system?

 

[Mike67]

Very clean install. That looks like a Hydratech system?

I beleive you are correct, I bought it from another member here.
I sources the resevoir from PSC, it was pricey....over half of what I gave for the HB & MC..

 

[6872n73]

If you have access to the system now I'd pick it up and put it on the shelf for later. I passed on a couple spare units and I now live where there are no junkyards or pick-n-pulls that I can wander around in. And I was considering going HB on my 68 Chrysler wagon and a couple other projects as well.

This is why I have one on my bench right now, for that "someday" project.

Thanks for the pics Mike67, the adaptor plate is sort of what I was thinking about or weld up the stud holes on the astro van mount and redrill.

Just curious, what is this?

 

[Crash520]

They make an adaptor that allows you to clock the HB in any direction you want.
My car was a manual brake car and was able to line up the pushrod easily though it had to be short.
I also ran a seperate return instead of a T. I have a serpentine setup that uses a GM pump w/o a reservoir.

View attachment 1035128 View attachment 1035129 View attachment 1035133

Mike, what bracket and GM type 2 pump did you use? I’d like to use one but probably not a serpentine system due to the potential use of a pro charger

 

[Mike67]

I have the March Revolver, everything is through the master bracket, but believe they have just a ps bracket if you need.
The pump comes from an 87 Sunbird, I think it flows 4-5 gpm @ 11-1200psi.

 

[Mike67]

Just curious, what is this

What is what?

 

[Thrashingcows]

This is why I have one on my bench right now, for that "someday" project.

Thanks for the pics Mike67, the adaptor plate is sort of what I was thinking about or weld up the stud holes on the astro van mount and redrill.

View attachment 1035331

Yeah wish I had picked up a few spares when I was doing my conversion. They were going for about $50 a pop from the pic-n-pull.

No need to weld up the astro van bracket, just mark the new location and use a small round file to make a new alignment point, then do as I did and use a cut roller bearing, or even a small bolt would work, as the new keyway.

 

[6872n73]

What is what?

The red item circled on the inlet of your radiator

 

[70chall440]

The red item circled on the inlet of your radiator

Looks like a temp sensor port or something.

 

[Mike67]

The red item circled on the inlet of your radiator

Didnt see the red circle... it's a coupler that has a boss for another temp sensor. I'm running EFI and am using the one in the water pump for its sensor.
That one actually is for my electric fan controller, I have another one in the lower hose for an analog gauge.

 

[Mike67]

adaptor plate is sort of what I was thinking about or weld up the stud holes on the astro van mount and redrill.

So I had started building another kit to do this initially, but the problem was with the length of the push rod on a plain HB unit. It extended way beyond the brake pedal point of attachment. I even tried using a PB pedal pivot arm and just couldn't make it work.
I call Hydro tech to see if they would sell just an adaptor plate and was met with a "no way"...
Have a friend here that was converting back to manual and all out race and he offered up his unit, hoses, the socket for a good deal.
So ended up the only thing I changed was adding the reservoir and a dedicated return line.

 

[70chall440]

Why didn't you just remove the pedal rod and make a new one?

 

[Mike67]

Why didn't you just remove the pedal rod and make a new one?

I came across the deal where I didnt have to, & it had all the hoses the right MC, sold what i had...didnt loose any $$$ on it so I'm happy.

 

[70chall440]

Got to love it when things work out! I think I will be buying a rebuilt unit from RA and then building a system around that.

 

[70chall440]

I am back to the HB system trying to decide how to proceed. I acquired a reman'd HB system from Rockauto that is for a 03-10 Ram 3500 and I purchased a new MC also from RA that is for a 85 Dodge D150, however the 2 don't want to play well together. Turns out that the 2 bolt MC spacing on the HB unit is ~3.408 whereas the spacing on the MC is ~3.151 or better said .25" difference.

I believe that there is enough material in the MC to allow for clearancing, so that isn't a huge problem. However the firewall mounting plate is a different story, I can use the stock one for the car but I have to remove the one on the HB first which is a bit of a pain but I ordered a socket so that should be easier.