A while back I was asking about doing a Mini Cooper pump for my car but it runs on k-line and I think I got that figured out but when I was getting ready to install it I realized it didn’t have even remotely the volume I needed. Looked at the Volvo but it’s also about 1/3rd of what I need for a '72 Cadillac that weighs north of 7k#.
Finally decided on a late model Chrysler/Dodge full sized (like 300 size) pump which has the pressure and volume I am looking for. This pump doesn’t have a steady state I can just tell it ‘go do the thing’ and it does the thing but relies on steering input (which obviously a '72 Cadillac doesn’t have). I bought a string potentiometer I’m going to put on the pitman arm and figure out steering angle velocity change from that.
Apparently there isn’t an abundance of information about the CAN messaging for this pump out there. I was going to send the string pot to to the ECU (or maybe PMU depending). Ordered a box from Inductive Autoworks to do the translating but I was hoping that maaaaaaaybe there was a way to do it natively within the ECUMaster ecosystem.
Anybody here ever run one of these pumps or anybody at ECUMaster know how I could not have to use this box to control the pump?
Thanks!
That pump will require a steering input sensor to control pressure output. Also you might want to confirm its amp draw which is very high. Most of the issues you’re going to run into is trying to match the flow rate of a GM style belt driven power steering pump to an electric pump. To my knowledge there is no pump available that can flow 3+gpm in an electric (except the EV car pumps that are 600volts). If you do find one please let me know.
For the GM trucks I do, I have found success in using hydraulic pumps for offshore boats. But those GM boxes like really high flow like 2.5 to 3 ish gpm. You will also need to monitor pump fluid temps and most likely need an additional volume/tank added.
@bravo685 You might dig on this pump actually. From the factory it’s limited to about 2.1 gpm but the Inductive Autoworks and the Hang Tight controllers unlock it up to about 3.6 gpm. It’s a power hungry bastard for sure with pulling north of 80-90 amps at full draw.
I’ve looked at it but the power draw is a turn off. You’ll have all kinds of issues trying to run a highout alternator if the engine uses ‘V’ belts. Some customers don’t want to convert to serpentine belt.
There are electric steering assist columns ( Column Electric Power Steering (CEPS) or EPAS (Electronic Power-Assist Steering)). These will work better with the electric pumps (the EPAS come with the pump built in) but once you get into large tires on lifted trucks its an issue again.
That’s totally fair. I designed my own serpentine belt setup for mine mostly to be able to spin this monster alternator (it’s mostly for my stereo I’m going to be doing).
