blistovmhz
NAXJA Forum User
- Location
- Vancouver, BC
Okay, first test drive. Felt good all around except for high speed steering. Definitely not getting quite enough flow. Moves fine for normal driving, but I won't be dodging any squirrels (stupid squirrels) just yet. Feels like I'm just not getting quite enough flow and the ram just needs a little more juice.
For those who run into this issue, when you crank the wheel at a normal person speed, it feels fine, but if you crank it like a banshee, it'll turn a little, then feel like the steering is binding up momentarily. This is (probably) caused by the pump not providing sufficient flow to fill the ram as fast as you're commanding.
I'd modified my old Jeep pump long ago when I threw in the durango box, but I'm of course now running a stock GM pump. On the Jeep, I just drilled out the HP fitting on the pump a size or two to increase flow. I'd assumg the GM pump has something similar, but I keep hearing about shimming something instead. I guess the GM pump restricts flow via a flow restricting valve. Will have to do more reading.
But for now, I'll get the ram stop shaved down correctly, clean up my welds, do some painting, tie the hoses somewhere they won't run into the crank pulley, and I'm good to drive.
Who knows about shimming the valve in a GM pump?
For those who run into this issue, when you crank the wheel at a normal person speed, it feels fine, but if you crank it like a banshee, it'll turn a little, then feel like the steering is binding up momentarily. This is (probably) caused by the pump not providing sufficient flow to fill the ram as fast as you're commanding.
I'd modified my old Jeep pump long ago when I threw in the durango box, but I'm of course now running a stock GM pump. On the Jeep, I just drilled out the HP fitting on the pump a size or two to increase flow. I'd assumg the GM pump has something similar, but I keep hearing about shimming something instead. I guess the GM pump restricts flow via a flow restricting valve. Will have to do more reading.
But for now, I'll get the ram stop shaved down correctly, clean up my welds, do some painting, tie the hoses somewhere they won't run into the crank pulley, and I'm good to drive.
Who knows about shimming the valve in a GM pump?