muddstopper
Veteran Member
I have two section hyd pump, I want to mount on a 7.3 international engine. Pump is 75gpm combined. shooting for 3000psi, but might be able to get by with less pressure. Anyways, the engine is coming out of a old international truck, Tranny is shot before someone suggest using the transmission to reverse shaft direction. And no the rotation direction cant be changed, without buying a lot of expensive parts. I would like to mount the pump at the rear of the engine, but I would have to build jack shafts and use belts and pullies to make that work. Second thought is to just mount the pump on the front of the engine using a short drive shaft with universal joints. My concerns with mounting at rear of engine is the possibility of slipping belts. 75gpm oil at 3000psi, would take some power to pull. I could use vee belts, but not sure to how figure out how many vee's I would need. Probably a chart somewhere on the net, I'll have to search for it. Also side loading on the pump shaft would make me worry. My second thoughts are mounting the pump on the front directly to the crank. I have seen a ton of hyd pumps set up this way, but nothing the size I plan on using. I am wonder if the crank keyway will hold up, and will the front engine bearing take the stress. I can make a mount for either end, just wondering which method would be the best to use.