Power steering vent

[-83MONTESS-]

I have a remote style reservoir for my PS and hydroboost setup. When everything is nice and hot I have some pulsing in the steering wheel. No issues with the brakes however. When I go to open the PS fluid reservoir I find that it's under pressure and the fluid level is an inch or so higher than when it's cold. Never experienced it with the regular PS pump/reservoir. Just wondering if not having a vent is my issue or not.

 

[pagrunt]

Does the cap have marks for cold & hot on the dip stick?

 

[-83MONTESS-]

Does the cap have marks for cold & hot on the dip stick?

The cap doesn't have a dipstick. It's basically a universal reservoir that I TIG welded fittings in for the additional hydroboost hoses.

I can't remember the capacity of it but I know it's quite a bit more than the stock style reservoir.

 

[1KWIKSIX]

I've experienced similar issues with my fluid level in my power steering reservoir on my HydroBoost install as well.
Am running a PSC Power Steering Reservoir designed for HydroBoost install .
For HydroBoost it's recommended that the cap on the reservoir is vented.
I've been experiencing some PS fluid on the ground (underneath my car) . Seems that after retuning from driving( and things are hot), after parking in the garage overnight I am finding a small puddle of PS fluid. This is from the hot fluid expanding . A call to PSC tech support confirmed that only 2 things would contribute to this condition. (1) expanding fluid due to high temperatures & (2) fluid level too high.
I've switched over to a synthetic PS fluid which helps. I chose Sweet Mfg / Valvoline PS Fluid which is designed for racing and has a much higher boiling point so it's able to withstand higher temperatures .

In an effort to reduce PS fluid temperatures, I installed a De Rale frame rail mount style cooler on the lower edge of my rad support behind the grill.

I've also removed 2 oz of fluid from the reservoir which leaves plenty still, but now has the fluid 1/2" below the max fill line in the reservoir. They recommended their anti-splash / pressure relief valve, which reduces the likelihood of cavitation . Apparently it keeps the reservoir under slight pressure (6 psi) .It's a simple plug N play install....cost me $75 from Summitt Racing.

PSC Remote Anti-Splash Steering Fluid Vent with Pressure Relief Valve (ASV) - Featured_Home

PSC Remote Anti-Splash Steering Fluid Vent with Pressure Relief Valve (ASV) <a href="http://www.pscmotorsports.com/motorsport-specific-products/offroad/reservoirs-overflow-bottles/vent-kits/remote-reservoir-vent-line-kit.html"_blank">Remote Reservoir V

www.pscmotorsports.com

One last thing I also did was add a small bottle (4 oz) of LubeGard Red PS fluid conditioner (keeping the fluid level below the max fill line still)

Maybe overkill, but I"m happy to report that my overflow conditions have disappeared now.

Here's a thread I posted on it recently on another board. Hope this information is helpful to you & others.

PSC Power Steering Fluid Reservoir overflow issue resolved

Installed a PSC Power Steering Fluid Reservoir last year on my HydroBoost install and has been working well since last year. However, just recently this summer on 2 occasions after driving in hot temperatures parked the car in the gargage and next morning found a puddle of power steering fluid...

turbobuick.com

 

[pontiacgp]

On our circle track cars we ran a small transmission oil cooler to cool the power steering fluid cause it expands so much when hot and it would flow out of the top of the remote resevoir. Get that stuff on slick tires and you end up in the wall real quick

 

[69hurstolds]

Could be the carbonation... 🙂

J/K. I'd go with 1KWIKSIX advice in adding a cooler. Having too much hot oil without cooling it isn't a good thing either.

Another idea, albeit a crazy one, is to fab up a small stainless vent tube out of the top of the reservoir, not in the cap, and maybe even run it to a small catch can device or something else hidden but accessible as to be able to check/empty said catch can. Or drop it down the frame where you can see if you don't think it'll blow fluid out. (Not to run it too far down as to make it into a vacuum tube with air blowing across the end of the tube, though) I know that's a lot of extra crap that you don't need, but it's one way of venting.

 

[pontiacgp]

I have a remote style reservoir for my PS and hydroboost setup. When everything is nice and hot I have some pulsing in the steering wheel. No issues with the brakes however. When I go to open the PS fluid reservoir I find that it's under pressure and the fluid level is an inch or so higher than when it's cold. Never experienced it with the regular PS pump/reservoir. Just wondering if not having a vent is my issue or not.
View attachment 117676

problem with that is if a cop sees you remove the cap to check the level you could be charged with having an open container in public.....

 

[-83MONTESS-]

On our circle track cars we ran a small transmission oil cooler to cool the power steering fluid cause it expands so much when hot and it would flow out of the top of the remote resevoir. Get that stuff on slick tires and you end up in the wall real quick

Funny thing is I had a cooler with -6 ends on it ready to install but I didn't think I needed it since it seemed fine before I changed the pump and reservoir setup. I plan on switching to a fiberglass front bumper cover this winter so I guess that would be a good time to plumb it in in front of the radiator.

 

[-83MONTESS-]

I've experienced similar issues with my fluid level in my power steering reservoir on my HydroBoost install as well.
Am running a PSC Power Steering Reservoir designed for HydroBoost install .
For HydroBoost it's recommended that the cap on the reservoir is vented.
I've been experiencing some PS fluid on the ground (underneath my car) . Seems that after retuning from driving( and things are hot), after parking in the garage overnight I am finding a small puddle of PS fluid. This is from the hot fluid expanding . A call to PSC tech support confirmed that only 2 things would contribute to this condition. (1) expanding fluid due to high temperatures & (2) fluid level too high.
I've switched over to a synthetic PS fluid which helps. I chose Sweet Mfg / Valvoline PS Fluid which is designed for racing and has a much higher boiling point so it's able to withstand higher temperatures .

In an effort to reduce PS fluid temperatures, I installed a De Rale frame rail mount style cooler on the lower edge of my rad support behind the grill.

I've also removed 2 oz of fluid from the reservoir which leaves plenty still, but now has the fluid 1/2" below the max fill line in the reservoir. They recommended their anti-splash / pressure relief valve, which reduces the likelihood of cavitation . Apparently it keeps the reservoir under slight pressure (6 psi) .It's a simple plug N play install....cost me $75 from Summitt Racing.

PSC Remote Anti-Splash Steering Fluid Vent with Pressure Relief Valve (ASV) - Featured_Home

PSC Remote Anti-Splash Steering Fluid Vent with Pressure Relief Valve (ASV) <a href="http://www.pscmotorsports.com/motorsport-specific-products/offroad/reservoirs-overflow-bottles/vent-kits/remote-reservoir-vent-line-kit.html"_blank">Remote Reservoir V

www.pscmotorsports.com

One last thing I also did was add a small bottle (4 oz) of LubeGard Red PS fluid conditioner (keeping the fluid level below the max fill line still)

Maybe overkill, but I"m happy to report that my overflow conditions have disappeared now.

Here's a thread I posted on it recently on another board. Hope this information is helpful to you & others.

PSC Power Steering Fluid Reservoir overflow issue resolved

Installed a PSC Power Steering Fluid Reservoir last year on my HydroBoost install and has been working well since last year. However, just recently this summer on 2 occasions after driving in hot temperatures parked the car in the gargage and next morning found a puddle of power steering fluid...

turbobuick.com

Good to know. I have thought about switching to a different, more performance oriented fluid as opposed to the off the shelf stuff im using now.

I looked at the PSC stuff when I did the swap but that's just way too much money for me. I did end up with the PSC housing for the pump that lets me run a remote reservoir. You can actually see it in my pic. Their reservoirs were just hatefully priced for me.

 

[-83MONTESS-]

Could be the carbonation... 🙂

J/K. I'd go with 1KWIKSIX advice in adding a cooler. Having too much hot oil without cooling it isn't a good thing either.

Another idea, albeit a crazy one, is to fab up a small stainless vent tube out of the top of the reservoir, not in the cap, and maybe even run it to a small catch can device or something else hidden but accessible as to be able to check/empty said catch can. Or drop it down the frame where you can see if you don't think it'll blow fluid out. (Not to run it too far down as to make it into a vacuum tube with air blowing across the end of the tube, though) I know that's a lot of extra crap that you don't need, but it's one way of venting.

I was kind of hoping to be able to buy something like a fuel cell vent thats a bulkhead style fitting that way I can just drill a hole in the cap and mount it there but after looking at my cap I don't think that will work unless I can find something very small. Drilling the reservoir might be the only way.