Review: Owl Grenadier Steering Pump Upgrade

[ecohen2]

I don't actually mind the noise, I just wish I could reduce the amount of assist... It is way too light so you don't get a sense of what is going on...

 

[Agile1]

was there any difference in tone? has this been put on a noisy pump? just curious if some of this noise is high frequency valve chatter.

Yes, the factory pump was much quieter after the boost kit was added.

 

[parb]

What exactly is in their kit? they keep the stock pump and just change the valving and remap how it reacts to input based on speed?

 

[HereinDaRockies]

and what is this pump cooler that you need to add?

 

[Zimm]

Yes, the factory pump was much quieter after the boost kit was added.

Do you need to remove the pump to put the kit in?

 

[mji111]

Do you need to remove the pump to put the kit in?

I am interested in understanding how involved this job is as well. I watched the video for installing this in a jeep and all of the work is in removing the pump. Changing out the adjustable spring assembly to increase the psi is very easy if you can get access to it.

 

[Agile1]

Do you need to remove the pump to put the kit in?

I did not remove the pump, it's straight forward if you're a mechanically competent person.
Tip: loosen the pump from its mount completely in place.
As Apex states, "DO NOT lose any parts"

 

[Agile1]

and what is this pump cooler that you need to add?

I did not add a cooler... no issues in 25K plus miles.

 

[Agile1]

What exactly is in their kit? they keep the stock pump and just change the valving and remap how it reacts to input based on speed?

The Apex kit?
* Spring
* Custom plug to replace the plug that holds the spring, allows for adjustment
* Manifold to TEE in the PSI gauge to set pressure

 

[ppearman]

Ordered and look forward to installing once back in Cape Town

 

[HereinDaRockies]

So strange how did you make the connection that this item would work with the Ineos ps pump?

 

[Agile1]

So strange how did you make the connection that this item would work with the Ineos ps pump?

45 years of experience doing stuff outside the lines and great connections.

 

[outono]

Welp, unrelated to the new pump, but my steering shaft rubbed through a coolant line today. Has anyone seen this before?

 

[Dokatd]

Well, my issue has been, electric motors are very consistent when manufactured, you dont get 10% of motors coming off the line as being noisy. lots of NVH and heat tend to be your cues for impending doom, and yet we get mostly quiet units with some squealers as far as the pump assemblies go, and nothing is failing. so, I'm not sold on the actual motor being the assembly culprit just just yet, I'm still leaning towards it being the application, like a cheaply constructed or poorly designed impeller with bad bearings or out of balance, or a valve.

View: https://youtu.be/Ef8ke29cO14?si=Cotlj_N_gvqZASEt


This is 100% electric motor.

Upping the pressure might help due to increased load on the motor maybe.

 

[Zimm]

View: https://youtu.be/Ef8ke29cO14?si=Cotlj_N_gvqZASEt


This is 100% electric motor.

Upping the pressure might help due to increased load on the motor maybe.

I hear it, but it’s also driving an impeller every time you do that. Granted, my experience is with 10 to 1000 + hp electric compressor motors but, most of the whine that will deafen in you, is not the motor. It’s compressor unit. Kinda like an old Paxton or Weiand . In a Porsche 911 You hear a turbo whining away and it doesn’t have an electric motor… it’s the impeller making the high pitched noise as it pushes “fluid”.

 

[Dokatd]

I hear it, but it’s also driving an impeller every time you do that. Granted, my experience is with 10 to 1000 + hp electric compressor motors but, most of the whine that will deafen in you, is not the motor. It’s compressor unit. Kinda like an old Paxton or Weiand . In a Porsche 911 You hear a turbo whining away and it doesn’t have an electric motor… it’s the impeller making the high pitched noise as it pushes “fluid”.

That would be a wimpy impeller. It's just not even remotely close to the whine of hydraulic systems of this size. And the sound doesn't change significantly when more pressure is applied.

I don't have anything to back this up, just my opinion. And these electric power steering pumps are new to me as I have never owned one before this truck outside of my wife's two Rivians. The Rivian is silent of course.