The Stovebolt Site Forums The Shop Area The HiPo Shop 1951 dual master conversion.

Hi- first post here. I converted my '51 3/4 ton to a dual master cylinder using the commonly available "power booster" bracket, but did not install the booster. The distance from the stock pedal pushrod mounting hole to the new dual master cylinder inlet is 10-1/4".

I am having trouble locating a new pushrod that is this long, or even one I could cut down.

Does any one have any suggestions where I could find one of these?

Thanks in advance,
Keith

Can't you modify the bracket to move the new master closer to the pushrod hole?

I have the same year and model, and have been looking for a kit that was made to do this. Every thing I've seen has been so vague in the installation information I couldn't get enough information to make a decision. We're you going to install the booster as that would be the most desire able part of the whole thing.

I did not install the booster-however I left enough line at the master cylinder that I can add one in later.

Ironically, a co-worker had an extra 10" pushrod left over from a dual conversion he had done. I am still not sure where you would find one to purchase. Sounds like an opportunity for a needed part in the aftermarket.

I have my dual master cylinder installed after some modifications to the bracket.

The brake pedal goes nearly all the way to the floor-and the rear brakes never apply. The fronts stop fairly well-

I am thinking I need to make a new pushrod to have a bit of "preload" on the hydraulic system.

The pushrod as it is now fits with no "gap" into the master cylinder.

Am I on the right track to extend the pushrod, or do I need to have any sort of check valve on the rear wheel cylinders?

Thanks,
Keith

You can't 'preload' the brakes, they'll lock up.
You'll need to re-evaluate what you think you have, if the pedal goes nearly to the floor, then, the front brakes cannot be stopping 'fairly well' - see what I mean?
I'm not trying to pick apart what you're saying, just giving you a different perspective.
What I would be doing is some serious brake bleeding, it is a pita in that truck because of where the MC is located but I'd be bleeding the MC and working my way to the 4 corners, you'll find trapped air all over the place. You'll probably have some leaks to deal with once the system gets up to pressure. Dot3 fluid.