07z51

Had a track day at Limerock this past weekend. This was my first one taking my vette and the power steering reservoir was overflowing badly during each session. I have not noticed much of a difference in steering feel possibly a little tighter. Is this normal? is there a way to prevent this from happening in the future?

Any info appreciated!

CMY SIX

sounds like you may have had it over full, you do know that their supposed to be checked hot and it's lower in the tank then one might think, that being said after the first overflow it should have found it own level. may have to unhook the return line and check for flow, can't really think what could cause that except for being seriously over full?

Kenny94945

I am with post # 2.
Over filled.

What would cause an over flow?
Oil boiling over from heat, air bubbles, incorrect viscosity, clogged line come to my mind.

So, clear 'er up, refill to proper level with proper oil and monitor.
Let us know.

schpenxel

Overfilled. Mine use to do that too when I had it filled to the "full" mark on the stick. Suck some out with a turkey baster.

BlindSpot

Agree...not too much else it could be.

timd38

I use to have that problem then I upgraded to a Turn 1 pump that actually slows the flow and it solved the problem and provided more feel in the steering.

NemesisC5

Heat is your problem, expands and boils over. Install a PS cooler or as post above suggested install Turn One PS pump made for track use. Extended periods of high rpm's heat the fluid.

hotrodln

Like they say above if you don't have a PS cooler you need one. The factory pump will boil that stuff at high RPM. I take my 87 IROC to Lime rock and i had to add a cooler AND a turn 1 ps pump. Now i don't have anymore trouble.

BlindSpot

The cooler is making a lot of sense. If you're topped off and the fluid reached a super hot temp, it expands A LOT!. This is evidenced in modern automatic transmissions today where the fluid levels are set using a temperature probe through the fill port. As the fluid temp heats up it expands and runs out. At a certain temp you cap off, but as the temp continues to rise the fluid continues to expand.

I think this one is solved.

timd38

Z51 option includes the cooler and since Z51 is in his name, I assume that it has one.

Gearhead Jim

I didn't notice any mention of the fact that the little dipstick has two markings- "Full Hot" and "Full Cold", or something like that.

Even keeping it at the proper level, mine (Z51) will splash a little fluid around the cap if I get it hot and run it hard.

NemesisC5

Even if he does it may not be enough in all situations. My 02 C5Z came with an oem PS cooler but 20-25 minute track sessions varying rpm's between 2500 - 7000 can cause fluid to boil over quite easily in summer temps. I added a Setrab cooler in series with my oem cooler...problem solved.

timd38

I was thinking of doing the same, just because the OE does not look very robust. I have a Setrab one on my diff. Used the OE pump and mounted the cooler behind the diff.

Setrab really builds nice coolers. What did you do for lines? I bought busted OE cooler and was trying to use the lines off of it as a template, but lost interest in the project about a year ago, and never finished it.

NemesisC5

Ran new line from outlet into Mocal (thought is was Setrab, think the Setrab was by diff cooler) mounted to bottom face of bumper core support directly behind front screen on passenger side. I used rubber hose and hose clamps to connect at all connections...nothing fancy just functional. Dug these pics up from the bowels of an old hard drive. The Pfadt oil cooler is seen here as well mounted in the nose, it worked extremely well.