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That data is a non-bypass filter. Those *typically* only filter down to about 50-60 microns, but they flow 28gpm.
Whereas a bypass filter will go down to ~20 microns, but, depending on the filter, only flow 10-16gpm or so.
Non-bypass racing filters that only filter down to to that 50-60 micron mark should ONLY be used in applications where the oil is changed every few hours of engine run time, and are expected to be refreshed at much shorter then intervals (typically less than 100 hours, more like 20-50)
The pressure drop across the filter housing is under 3psi for both. Given that the bypass valve specified pressure is in the 8-11 psi range, I would assume it's not cracked open at all at these low pressure differentials.
The pressure sensors were on the outside of the filter housing, so some of that pressure drop is across the housing. The pressure delta across the filter bypass valve would be even smaller.
How many GPM do you estimate goes through the engine at high RPM? @RSMike estimates in the linked thread that the OEM pump pumps around 2.5GPM per 1000RPM, with the regulator dumping maybe 50% of that at higher flow rates. That works out to ~17-18GPM near redline.
If the filter wasn't flowing enough and the bypass valve was opening, I'd expect to see a higher pressure differential in RSMike's tests. Or does the bypass valve have some hysteresis where it opens at high pressure then only closes later when pressure drops below a threshold? I have a hard time wrapping my head around that idea, given that the measured pressure differentials in that thread are already in the 2.5 to ~3 psi range.
Napoleon on Experience: "In my army their is a Mule that has been on every campaign and has more experience in war than all of my Generals combined, but that mule will never be a General".
Experience is only useful if you learn from it and do not repeat mistakes. You have that problem, I don't.
OMG OMG OMG, Try only running on banked ovals to keep the pan tilted to avoid poor drainage of metal derbies in the engine. Boycott all flat parking lot autocross courses, flat surfaces must be avoided at all costs.
I bought the Oil pan because it is well designed like the parts I have made for Toyota, Kawasaki, HVAC Systems, and US Air Force.
You have blown two engines and are content in your knowledge.
Don't worry, you will get another leaning opportunity.
Mitsuatb
Na
Quite unbelievable. Trying to communicate with 1 person directly doesn't work. Correcting the trajectory of the conv doesn't work, when pride is involved. It's really like talking to a gaggle. No offense to women in groups
How many GPM do you estimate goes through the engine at high RPM? @RSMike estimates in the linked thread that the OEM pump pumps around 2.5GPM per 1000RPM, with the regulator dumping maybe 50% of that at higher flow rates. That works out to ~17-18GPM near redline.
Not sure exactly, I tried looking for oil flow meters and they are a bit expensive...
Assuming 100% pump efficiency, it's around 85 L/min (22.5 Gal/min) at 7000 engine rpm (9333 pump rpm).
It wont be 100% efficient. I would love to get my hands on some hot oil flow meters!
2D Flat Lander Troll spouting more nonsense. Let me use your language: He Haw, He haw He Haw, He haw,
Mitsuatb
Originally Posted by ViciousLSD
Quite unbelievable. Trying to communicate with 1 person directly doesn't work. Correcting the trajectory of the conv doesn't work, when pride is involved. It's really like talking to a gaggle. No offense to women in groups
The pressure drop across the filter housing is under 3psi for both. Given that the bypass valve specified pressure is in the 8-11 psi range, I would assume it's not cracked open at all at these low pressure differentials.
The pressure sensors were on the outside of the filter housing, so some of that pressure drop is across the housing. The pressure delta across the filter bypass valve would be even smaller.
How many GPM do you estimate goes through the engine at high RPM? @RSMike estimates in the linked thread that the OEM pump pumps around 2.5GPM per 1000RPM, with the regulator dumping maybe 50% of that at higher flow rates. That works out to ~17-18GPM near redline.
If the filter wasn't flowing enough and the bypass valve was opening, I'd expect to see a higher pressure differential in RSMike's tests. Or does the bypass valve have some hysteresis where it opens at high pressure then only closes later when pressure drops below a threshold? I have a hard time wrapping my head around that idea, given that the measured pressure differentials in that thread are already in the 2.5 to ~3 psi range.
Valves do tend to have a crack pressure (opening pressure) and it takes more force to open them, and they'll close somewhere below that crack pressure.
I just find it odd that a bypass filter is able to filter 20u, but as soon as you buy a big non-bypass racing filter, then all go up to 50-60u filtration.
The data is very good showing in/out pressure and the pressure at the last main. Just isn't what I expected I guess. The only thing to add would be flow meters, but as mike said, expensive.
The data is very good showing in/out pressure and the pressure at the last main. Just isn't what I expected I guess. The only thing to add would be flow meters, but as mike said, expensive.
I agree, the data is of excellent quality (typical @RSMike ). The third sensor at the main is a nice touch that helps back up the data.
Created the similar plot to Mikes of a stock pan setup as my "before" data. This has kiggly hla, ported OFH, softer oil spring, no balance shafts or oil squirters, ported drains in head, 1qt over full, and no issues with blowby filling the catch can.
Also, this is total from 10-12 runs here.
Still, lots of time seen with the pressure dropping which is likely cavitation events and no just low pressure.
Strong enough signal here to not race the car again till I get my Infinity oil pan installed.
Votex drain plug is nice with the Works Croxx 2 Plate. The IE oil pan is very close to the Croxx plate. The arc of the draining oil sprays on top of it, even with a foil deflector the 2.5' square croxx plate spreads the oil into a huge mess. Not the oil pans fault but to avoid a huge mess with the Croxx plate you should fit the Votex. Thread the hose end from front lip of plate back through the DP slot in the plate and allow the drain hose end to hang down and then thread drain fitting into the valve. It will be slower to drain but less tools and mess. Correct Plug size is 14mm x 1.5mm available on amazon.
Here's my first logs with the Infinity oil pan (cause I'm a slacker and it took me till now to install it). These are both a scatter plot of a random run before and after the change. I'm still walking down the pressure and need another turn or two but the complete lack of dips is amazing.
