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Four bolts from the underside. Nothing substantial. If it's American I'd say it's about a 1/4 x 20, maybe even smaller. Likewise metric. Notice the pot metal reinforcement under the plastic. I'm not sure if the bolts thread into the pot metal or directly into the plastic. Internal...

International Harvester Freightliner Notice that my Topkick (Kodiak) booster posted previously uses a lunette-eye push rod to connect to the pedal. The IH & Freightliners use clevis push rods. I would suggest getting the booster & the pedal from the same vehicle. Here's a link the the...

There are some crude measurements for you. At least it gives you an idea of what to expect. Don't hold your breath. I still have to do some research before beginning this upgrade. I have to decide on brake lines, adapters, etc. I'm even considering leaving the Deuce airpacks on the truck &...

Various HydroMax pics For those who are contemplating a HydroMax conversion, here are some pics of what the booster, master cylinder, and pedal assembly look like: Upside down pedal Pedal as it would hang under the dash (from a GMC Topkick) Self-explanatory Combination power steering...

As far as I know the boosters are the same. The master cylinders have different diameter outlets depending on the application. I believe the master cylinder throw is the same in all applications. I was going to just bite the bullet & go to a GM dealership to obtain it. It would be $$$ but I...

I was going to do this, but I've since had a "design change" in what I hope to accomplish with the Deuce. Originally I was going to put a Kodiak7500 Hydromax system on (from a tandem axle truck) 6x4 But now I have a crazy hair up my back side that I want to research first. I do a lot of...

The hardest part is going to be the brake pedal. I can get the pump, booster & mc w/o too much trouble. The brake pedal, however, will probably require my actually going to a junkyard. Grumble, grumble, grumble. The nearest diesel yard is about 40 miles away and a real dump, no pun intended...

Jake, I can't guarantee flawless results. But here is what I plan to do. I will source out a 6x4 Hydromax. 6 meaning 6 wheels, 4 meaning 4 rear drive wheels (Kodiak doesn't come in 6x6 configuration) I will then go to my flat, undisturbed patch of asphalt & run a few trials of say 50 to 0...

The Kodiak 7500 tandem axle runs 2000 psi. The stock M35 runs 1800 I'm thinking a bump stop on the brake pedal limiting it to 1800 psi would be ideal. but for this I'll have to get a psi meter. The Kodiak runs 4 70mm pistons per wheel up front, disc brakes. The M35 runs 2 wheel cylinders...

Okay, I think I've found the most likely "compatible" master cylinder using the HydroMax boosting system. It turn out that all of the fairly new Chevy Kodiak & GMC Topkicks up to the C7500 series use the HydroMax. Anything from 2000ish up should have it. The C8500 used to use air brakes but...

correct. someone wanted to know if doing dual or even triple MC's was possible. Yes it is, but A good single MC choice is better. Just a "for example" picture.

BTW, Somebody wanted to know what a triple master cylinder looks like attached to the pedal: http://www.summitracing.com/parts/TIL-72-605?autofilter=1∂=TIL-72-605

Google "Klam driveline retarder" or "Telma driveline retarder" They do not generate useful electricity. They use EM eddy currents to dissipate vehicle Kinetic Energy as heat.

Would you happen to know the exact diameter & throw of the stock master cylinder?

There is another, more expensive option. Electric driveline retarders would be the ultimate failsafe, redundant brake system. But at $6K + it would be worth more than the whole truck!

Now where have I heard that before?:-D I'm definitely going to do the Hydromax upgrade before summer. If I can't find an appropriate master cylinder, for say a dual axle motor home, Then I'll try my goofy 3x3 dual circuit. And if that doesn't work I'll put it back into one circuit like the...

Good link. So what this means is the rears, even with 4 tires, will expand to have shoes touch the drums & at the same time the fronts will expand matching the pressure. Is that correct? So at full lockup all six will have the same force. I hope I am understanding this right. Then why...

I must respectfully disagree with this. What you said is only true for a single circuit system because of Pascal's principle. It is also mostly true for 4 tire vehicles. And it also assumes the shoes are already tightly touching the drums (full lockup position). In that case I agree with...

To replicate the current one-circuit brakes, you would have to have exactly a 66.66 rear to 33.33 front split. The 60/40 would probably still need proportioning a bit. Usually the 60/40 MC's are for front disc brakes. From what I understand, drums need to be closer in proportion. I've been...

The way I figure it, it would be better to be sliding sideways/steering sideways to a stop rather than ramming full speed into a Hyundai at a stoplight b/c of no brakes at all. Under normal driving, there would be no sideways pull because all the wheel cylinders would be expanding equally...