WTO - Ram Assist......installed but not very \"assisty\" yet???
OK guys (and Matt if you're logged in!),
I installed the entire WTO ram system and made some mods to the power steering pump. Got the whole system bled (as far as I can tell) but I'm not getting much "assist" yet. I can't turn the wheel with one-finger or anything like that, and even when driving at higher speeds I don't detect that it's doing much..... I started off with very small PS Pump changes so I wouldn't overdo anything, so let me tell you what's been done so far and maybe somebody can suggest the next step???:
Step 1: Main Fitting - WTO instructions call for this to be drilled up to 5/32" (.156") to increase low-rpm flow. My existing fitting was a little over 1/8" diameter (.125"+) so I didn't want to go all the way to 5/32" right away. I used the only intermediate size drill bit I have... 9/64" (.140") Maybe this was not a dramatic enough change from the original bore size?
Step #2: Flow Piston - The flow piston on my pump had two shims in the assembly, a thin one, and a thick one. The combined thickness was .066" and I removed them both as per the instructions. I did NOT modify the screw in the assembly figuring that the factory would have provided adequate clearance for a zero-shim setup, and it shouldn't be bottoming out yet.
The second step on the flow piston is to cut the "slot" into the end of the part. However, when I called WTO they said not to do it that way...simply open-up the existing hole to 5/32" (.156") which I did.... I did NOT drill all the way through the piston and create TWO holes in the end of the part, as I don't think that was what I was told.
SO.....that's where I'm at now. Any suggestions about which part I should go back and modify MORE? As I mentioned to Matt, I am looking for a very "streetable" ram-assist here. I don't want it to add LOADS of assist and make my steering all sluggish on the street, so please keep that in mind when making your comments.
Thanks All!!! It's Saturday Night on CK5, so I'm expecting lots of views and comments on this post!!! /forums/images/graemlins/thumb.gif /forums/images/graemlins/deal.gif
OK guys (and Matt if you're logged in!),
I installed the entire WTO ram system and made some mods to the power steering pump. Got the whole system bled (as far as I can tell) but I'm not getting much "assist" yet. I can't turn the wheel with one-finger or anything like that, and even when driving at higher speeds I don't detect that it's doing much..... I started off with very small PS Pump changes so I wouldn't overdo anything, so let me tell you what's been done so far and maybe somebody can suggest the next step???:
Step 1: Main Fitting - WTO instructions call for this to be drilled up to 5/32" (.156") to increase low-rpm flow. My existing fitting was a little over 1/8" diameter (.125"+) so I didn't want to go all the way to 5/32" right away. I used the only intermediate size drill bit I have... 9/64" (.140") Maybe this was not a dramatic enough change from the original bore size?
Step #2: Flow Piston - The flow piston on my pump had two shims in the assembly, a thin one, and a thick one. The combined thickness was .066" and I removed them both as per the instructions. I did NOT modify the screw in the assembly figuring that the factory would have provided adequate clearance for a zero-shim setup, and it shouldn't be bottoming out yet.
The second step on the flow piston is to cut the "slot" into the end of the part. However, when I called WTO they said not to do it that way...simply open-up the existing hole to 5/32" (.156") which I did.... I did NOT drill all the way through the piston and create TWO holes in the end of the part, as I don't think that was what I was told.
SO.....that's where I'm at now. Any suggestions about which part I should go back and modify MORE? As I mentioned to Matt, I am looking for a very "streetable" ram-assist here. I don't want it to add LOADS of assist and make my steering all sluggish on the street, so please keep that in mind when making your comments.
Thanks All!!! It's Saturday Night on CK5, so I'm expecting lots of views and comments on this post!!! /forums/images/graemlins/thumb.gif /forums/images/graemlins/deal.gif
