Check out the oil filter this Racing Audi uses! ;O) (BWW)
03-15-2003, 02:02 AM
#1
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Check out the oil filter this Racing Audi uses! ;O) (BWW)
<center><img src="http://www.stasisengineering.com/images/StasisShop12.jpg"></center><p>Tell him that Fram sucks! ;O)
03-15-2003, 06:34 AM
#4
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Looks like a big oil slick under the drivers side tire.LOL!!!
Found out some very important info regarding the oil system on are cars this week and because of it, I wouldn't trust my engine with a FRAM. The oil pressure in our cars especially the AFC version, is mostly controlled by the cooler and the filter. The biggest disadvantage to using the FRAM filter is it's lack of a check valve and the microfilter that are found inside the Mann filters that Audi uses. If the filer fails to help with controlling the oil pressure your front main seal and oil pump suffer. Besides the pressure issue the Mann filters elements are designed for synthetic oils which can be hard on the filter elements in cheaper filters. Last but not least why use a FRAM when you can get OEM filters online for just a little bit more?
03-15-2003, 01:18 PM
#5
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Re: oil pressure in our cars-is mostly controlled by the cooler and the filter?
I think you been smoking something?
Oil pressure is always "controlled" by the device which makes that presure- 'Oil pump'! ;O)
Its a "positive displacement" oil pump!
Perhaps you've never heard of a FRAM HP1 filter?
Its no "ordinary" filter!
Plus the race engine pictured, runs the FRAM HP1 because it flows more oil than any Mann filter can!
So why by a Mann, when you can buy a FRAM! ;O)
What Audi changed on the AFc oil system is where the pump got its oil from! ;o)
According to the Bentley, in 95, Audi changed the oil pump design. In fact the body is the same but oil flow pattern has been changed. Oil is taken by the oil pump at the filter and then sent
to the engine. Before, oil was pumped at the pan, then directed to the engine and filtered before returning to the pan! ;O)
The filter & cooler do not "control" oil pressure.
They can have a negetive effect on pressure & flow if restricted! ;O)
Oil pressure is always "controlled" by the device which makes that presure- 'Oil pump'! ;O)
Its a "positive displacement" oil pump!
Perhaps you've never heard of a FRAM HP1 filter?
Its no "ordinary" filter!
Plus the race engine pictured, runs the FRAM HP1 because it flows more oil than any Mann filter can!
So why by a Mann, when you can buy a FRAM! ;O)
What Audi changed on the AFc oil system is where the pump got its oil from! ;o)
According to the Bentley, in 95, Audi changed the oil pump design. In fact the body is the same but oil flow pattern has been changed. Oil is taken by the oil pump at the filter and then sent
to the engine. Before, oil was pumped at the pan, then directed to the engine and filtered before returning to the pan! ;O)
The filter & cooler do not "control" oil pressure.
They can have a negetive effect on pressure & flow if restricted! ;O)
03-15-2003, 08:41 PM
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Not smoking anything!! It is stated in black and white in the Bentley!!
But what you are saying about the Fram makes sense. More flow better for racing engines makes sense. But for non-modified engines A more restrictive filter protects the seals from failing prematurely.
03-15-2003, 11:37 PM
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I think you two are arguing the same point...hehe
Miktip is saying the oil pump provides the work (-> pressure), which it does, and mr. fix-it is saying the oil cooler and filter create a pressure drop across them, which they do, and this pressure drop keeps the oil pressure down to protect the seals... if I understand you both correctly, anyway!
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03-16-2003, 02:26 AM
#9
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According to Bentley..........
<center><img src="http://pictureposter.audiworld.com/6607/oilpump.jpg"></center><p>
Bentley states:
Functional description
Intake side
Oil is taken in from the oil pump -6- via the oil pick-up -8-.
Pressure side
Oil pressure comes from the oil pump -6- past the upper part of the oil pan -3- to the 11 bar (160 psi) pressure relief valve -7-, the oil pressure switch -9-, the oil cooler -2- and the oil filter -1- to the pressure relief valve -4-, to the engine -5-.
Pressure relief valve -4- controls the oil pressure to the engine.(take note of this!)
The 11 bar (160 psi) pressure relief valve -7- is a safety valve that opens only at high RPM and cold engine temperature.
Advantages
Oil pressure is controlled from the oil filter and oil cooler, so that the oil pressure available at those locations is supplied via the pressure relief valve -4- or from the oil pump.
Where it states, "oil pressure is controlled _from_ the oil filter" means pressure is controlled "after" the filter by the pressure
relief valve -4-.
Why? Because the Bentley also states:
1 - Oil filter
"Larger outer dimension"
NOT interchangeable with older version
2 - Oil cooler
"Larger cross-sectional flow area"
Which will allow larger oil flow capacities, and the high pressure of the oil pump to be handled better by the filter & cooler! ;O)
You have pressurized oil entering the filter & cooler, via the pressure control valve, which limits pressure entering the cooler & filter
to nothing over 160 psi. Which is good since most filters are rated to 200psi! Through the "larger filter" and "larger cross-sectional flow area cooler", oil exits, and through the other pressure relief valve -4-, which Bentley states "controls the oil pressure to the engine".
Where in all that did you come to the conclusion the filter & cooler "protects your seals"? ;O)
Bentley states:
Functional description
Intake side
Oil is taken in from the oil pump -6- via the oil pick-up -8-.
Pressure side
Oil pressure comes from the oil pump -6- past the upper part of the oil pan -3- to the 11 bar (160 psi) pressure relief valve -7-, the oil pressure switch -9-, the oil cooler -2- and the oil filter -1- to the pressure relief valve -4-, to the engine -5-.
Pressure relief valve -4- controls the oil pressure to the engine.(take note of this!)
The 11 bar (160 psi) pressure relief valve -7- is a safety valve that opens only at high RPM and cold engine temperature.
Advantages
Oil pressure is controlled from the oil filter and oil cooler, so that the oil pressure available at those locations is supplied via the pressure relief valve -4- or from the oil pump.
Where it states, "oil pressure is controlled _from_ the oil filter" means pressure is controlled "after" the filter by the pressure
relief valve -4-.
Why? Because the Bentley also states:
1 - Oil filter
"Larger outer dimension"
NOT interchangeable with older version
2 - Oil cooler
"Larger cross-sectional flow area"
Which will allow larger oil flow capacities, and the high pressure of the oil pump to be handled better by the filter & cooler! ;O)
You have pressurized oil entering the filter & cooler, via the pressure control valve, which limits pressure entering the cooler & filter
to nothing over 160 psi. Which is good since most filters are rated to 200psi! Through the "larger filter" and "larger cross-sectional flow area cooler", oil exits, and through the other pressure relief valve -4-, which Bentley states "controls the oil pressure to the engine".
Where in all that did you come to the conclusion the filter & cooler "protects your seals"? ;O)
03-16-2003, 03:04 AM
#10
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No, he's injecting his own "opinion" of his understanding of the system! ;O)
He writes: "oil pressure in our cars-is mostly controlled by the cooler and the filter" which it is not, its controlled by 2 pressure relief valves. Especially on the newer oil system, because it has a larger filter & higher flow cooler! ;O)
Then he writes: "A more restrictive filter protects the seals from failing prematurely"?
Actually he's backwards, as the newer oil system, as stated in the Bentley, is larger, and the cooler is of higher flow, so they are infact "less restrictive"! ;O)
No where in the Bentley does it state, "A more restrictive filter protects the seals from failing prematurely"
The Audi V6 oil system has 2 pressure relief valves for "protection"!
Then he writes: "A more restrictive filter protects the seals from failing prematurely"?
Actually he's backwards, as the newer oil system, as stated in the Bentley, is larger, and the cooler is of higher flow, so they are infact "less restrictive"! ;O)
No where in the Bentley does it state, "A more restrictive filter protects the seals from failing prematurely"
The Audi V6 oil system has 2 pressure relief valves for "protection"!