So I have doing some R&D on the 80 series vane power steering pumps and have found a lot of good and bad info. I have been toying with the idea of hydro ram assist and have seen several different setups and have talked with those that have done them. The biggest complaint is flow with the stock 80 series pump. With the lack of flow we loose the steering speed that gets noticed with the added ram. We have the pressure(somewhat) but who wants a slow steering system while having hydro assist, specially on the street, for those that actually drive to the trails with ram assist.
Now most of know of the pressure increase that can be had by drilling out the orifice on the outet side of the pump. The present thought is also that the flow cannot be changed. Well I am presently working in conjunction with a facility that may just be able to solve our flow woes. We have experimented with with different setups of the custom nature and have seen some great numbers and success with several different types of vane pumps. Toyota happens to have a very high quality and efficient system.
Those that have hydro winches will enjoy the benefits from this. Your spooling speeds will increase and pressure, if one has not already drilled out the disc. Meaning you will reap the rewards of more pulling force and may even hit relief pressure on the winch.
I will have some solid numbers by Tuesday or Wednesday to share. The bench testing will let me know more and just from I am seeing at the moment, pressures of up to 1700psi and 4+ gpm are looking quite possible. Maybe 5gpm. We are physically going into these pumps and "tweaking" the fluid ports and vane timing. The 1700psi number will include a large saftey buffer as I really don't want to see a split housing. Again the quality casting helps with this.
If we can achieve these numbers, I won't need to run a ram assist. And the bullet proof steering box will take all of what this pump can dish out. Some will obviously require a ram for grande tires, but this will make my 36's, (steering components will be upgraded) more steerable in the rocks and street driving will go unchanged. Those running rams will benefit from not having to run aftermarket pumps. Lets hope the numbers don't let us down.
Now most of know of the pressure increase that can be had by drilling out the orifice on the outet side of the pump. The present thought is also that the flow cannot be changed. Well I am presently working in conjunction with a facility that may just be able to solve our flow woes. We have experimented with with different setups of the custom nature and have seen some great numbers and success with several different types of vane pumps. Toyota happens to have a very high quality and efficient system.
Those that have hydro winches will enjoy the benefits from this. Your spooling speeds will increase and pressure, if one has not already drilled out the disc. Meaning you will reap the rewards of more pulling force and may even hit relief pressure on the winch.
I will have some solid numbers by Tuesday or Wednesday to share. The bench testing will let me know more and just from I am seeing at the moment, pressures of up to 1700psi and 4+ gpm are looking quite possible. Maybe 5gpm. We are physically going into these pumps and "tweaking" the fluid ports and vane timing. The 1700psi number will include a large saftey buffer as I really don't want to see a split housing. Again the quality casting helps with this.
If we can achieve these numbers, I won't need to run a ram assist. And the bullet proof steering box will take all of what this pump can dish out. Some will obviously require a ram for grande tires, but this will make my 36's, (steering components will be upgraded) more steerable in the rocks and street driving will go unchanged. Those running rams will benefit from not having to run aftermarket pumps. Lets hope the numbers don't let us down.