Post by
mattblancarte »
https://forums.nicoclub.com/mattblancarte-u99634.html
Wed Apr 28, 2010 10:47 pm
Hmmm, I thought that the manual valves were only meant to rapid-refill.
I'm pretty sure when I read the installation manual you are supposed to keep the air pre-charge between 7-10 psi, so that the accumulator can mimic the engine oil pressure while filling 3qt oil. My understanding was it had less to do with the desired discharge rate, and more about how accurate your accumulation will be while in use.
When you fill that thing up with oil, you'll want it all the way up to 85psi air-side (mimicking your rev-pressure). That means, effectively, that you'll want to rev the engine out for 30 seconds or so PRIOR to closing the manual valve (keeping pressure up as high as you can while filling up all the way to 3qt capacity). Otherwise, you'll be charging/discharging inaccurate amounts.
I thought you would pretty much use this bad-boy in two scenarios:
- While cold starting to pre-oil (cold oil obviously allows for instant high-pressures, effectively filling and allowing you to close the manual valve without the need for revving).
- While staging during a drag race or HPDE/TT/Race/etc.
Otherwise, I would just leave it charged to 85 psi with the valve closed. There's no need to have it open for street use unless you really plan on launching and accelerating or mobbing through canyon roads or something wild.
The standard electric valves are low-discharge (20-25 psi) and are really only meant to pre-oil engines. I have the middle E.P.C. which regulates charge/discharge to 35-40 psi. This allows me to cruise around and fill it up, and still have enough pressure in the event of a pump failure/cavitation/dry-pickup.
When you pull that manual lever, I'm pretty sure you're going to get 60 psi or so of rapid unchecked discharge-rate.
Maybe I'm looking at the wrong manual valve, though... Who knows. I still feel confused while considering different setups lol.