Race motor oil filter -- what to use?

[JoeMag]

What oil filters are folks using on race motors with GT3 oil pumps? ...mine is built on 993 case, no filter on oil tank, just motor.

[winders]

I use a Mann-Filter W 719/22 (made in Germany) on the angled filter console from the 965 Turbo.

I would highly recommend installing an oil filter console somewhere on the return oil line hose. I would recommend a Mann-Filter W 940 or a Mahle OC-61.

[dannobee]

It needs a filter before or on the oil tank. Something like the XRP inline cartridge filter or an Oberg/Raycor or Peterson weld-on filter housing to keep the big stuff out of the tank. The elements are easily removable and can be cleaned and reused. This is the common and recommended way to filter the oil going into the tank in nearly all classes of racing where dry sump is allowed.

Since you're using the factory filter console, it limits your options with respect to filters.

Oh, and a 120V oil heater on the oil tank lets you warm up the oil before engine start.

[JoeMag]

...should've clarified. I do have a Canton cartridge filter (I believe I have 75micron screen in it) up front before coolers to catch chunks before oil flows into coolers and heads back to tank.

yea, heaters would be cool. ...I'm gonna settle for 5min or so of idle before I move car.

[Henry Schmidt]

The finest oil filter system we've found for both street and race is the Hubb system.
Originally designed for fleet service, we were able to talk Chris into selling us a small quantity of filters designed for most Porsche application. Ordinarily their minimum order is 1000. Chris is a racing enthusiast so creating a Porsche application was his pleasure.
Most pro teams keep these innovations a secret so you won't see Hubb stickers on many pro race cars.

Faster Time to Pressure = Reduced Engine Wear
The HUBB Filter has been specifically engineered to achieve oil pressure faster at start-up.
HUBB Filter 0.2 Seconds
OE Filter 1.0 Second
HUBB Filter - Percent Contaminants Removed 99%
Premium Brand Filter - Percent Contaminants Removed 52%

Hubb filters are cleanable and reusable; with an easy to use ultrasonic cleaning system. Flows better, filters better, looks better, and race proven on high-horsepower competitions. Provides better flow at start-up and you can see contaminants early on.
CLEANER FLOW
It's metal on metal until the oil gets to the top of the engine and begins the lubrication process. HUBB provides up to 5X faster oil flow at start-up than a conventional filter. So start-up hurts a lot less.
Breakthrough Filtration Keeps Oil Cleaner, Longer
Source: Nationally Recognized, Independent Testing Laboratory – multi-pass test at 25 microns

[Henry Schmidt]

I got a question about our Hubb filters.
What if you don't have a sonic cleaner?

Part of our service with the Hubb filter is to clean the filter for you....$6.00 same day turn around.
If you have 2 filters, you just replace the dirty one with a clean one and when the first one comes back, you have it in reserve for the next time.

You can also buy sonic cleaners on the internet at pretty reasonable prices. It's a handy tool to have in the garage.

[JoeMag]

What is the OD and length of filter element?

[Henry Schmidt]

Originally Posted by JoeMag

What is the OD and length of filter element?

3" diameter, 3.75" tall. Here is one attached to a 993 oil console.

[stownsen914]

That's a nice lookin' filter. Do you have the flow rating?

[JoeMag]

…bypass pressure?

[Turbo_pro]

Originally Posted by stownsen914

That's a nice lookin' filter. Do you have the flow rating?

Conventional paper filters
Oil filter design has not changed in over 80 years
One filter design – made from paper and tin
Oil flow slows down when saturated with oil & contaminants
Most oil filters are rated at 99% Efficiency at 40 microns

HUBB Oil Filter
Made from surgical stainless steel and aircraft grade aluminum
Filter-in-a-filter design
Improves oil flow up to 5X, thereby reducing engine friction
99% Efficiency at removing oil contaminants at 25 microns
(captures contaminants down to 5 microns)
Increases contaminant storage capacity by 5X, doesn’t capture oil

[chrismorse]

This has always been a vexing concern - If the oil bypasses the filter, doesn't the bypassed oil carry the debris on to the tank or engine??
I realize that a continuous full flow filter, (always filtering all of the oil), is problematic, so what is a real world practical way to keep the trash out of the pump/bearings. It sounds like this filter is a big step forward - yes??
chris
PS, Any Baldwin filter users out there??

[Turbo_pro]

Originally Posted by JoeMag

…bypass pressure?

The difference starts with how the oil flows into the filter. 1) The HUBB filter features two large kidney shaped openings in its baseplate that channels the oil around the exterior of the primary filter. These large openings dramatically increase the oil flow in comparison to a conventional filter.

HUBB deploys a patented filter-in-a-filter design. Most of the oil is filtered by the primary filter 2) which filters oil from the outside to the inside. But when the pressure increases during acceleration, 3) HUBB’s 1st pressure differential valve opens and 4) oil flows into the secondary filter where it is filtered from the inside to the outside of the filter. This opposite flow from the primary filter eliminates cross contamination of the clean and dirty oil, allowing only the clean oil to flow through the center of the filter and back into the engine.

The purpose of the secondary filter is to enable HUBB to keep filtering your oil at higher pressure. Conventional filters do not have this capability and when faced with increased pressure go into bypass mode which contaminates the oil as the filter stops working.

To further protect your engine, the HUBB filter has a 5) 2nd pressure differential valve that opens when pressure become excessive in extreme operating conditions. This 2nd pressure differential valve ensures that the engine is never without oil. 6) And unlike conventional filters, this 2nd pressure differential closes when the oil flow returns to normal.

HUBB’s patented design can increase the oil flow rate to the engine up to 5 times the rate of a standard oil filter and HUBB’s filter efficiency is 99% of contaminants at 25 microns versus only 52% for a conventional filter. In combination with its patented pressure differential valves, the HUBB filter provides superior and longer protection for your engine.

[Turbo_pro]

I have these filters on 3 of my cars.
I got them from Supertec when Henry first got these filters.
The data I posted came from the Hubb website.

[Henry Schmidt]

Thanks JIm
I was going to post the same information.

I will be contacting our host with hopes that they will want to carry this product.
Hubb doesn't generally deal with smallish orders so it would help pricing if we could get the quantity up.
Until then, I think it inappropriate to advertise pricing here.

[JoeMag]

Very interesting concept with two by-passes in the filter. Would be interesting to see what the pressure differential is across the filter versus rpm for a 911 motor with GT3 oil pump. I could not find on the HUBB website what the set points were of the two by passes, anyone know?

Pulling out some data from a post of mine a few years ago, it can be seen that most of the time the OC229 filter I was running was running in by-pass with a ~40psi differential across the filter. ...I changed to the W719/22 that Scott mentioned shortly after these measurements were taken, but never put both sensors back to see if the differential was lower with the larger oil filter.




Note: graphs are labeled incorrectly. Orange is oil pump out (point 1), and blue filter outlet (point 10)

[JoeMag]

[Henry Schmidt]

Originally Posted by JoeMag

Very interesting concept with two by-passes in the filter. Would be interesting to see what the pressure differential is across the filter versus rpm for a 911 motor with GT3 oil pump. I could not find on the HUBB website what the set points were of the two by passes, anyone know?

I don't believe the HUbb filter does bypass in the conventional sense. There is an internal bypass but I believe it filters every drop of oil passing through it. The bypass is from a very fine filtration [around 5microns]to a slightly larger particles 25 microns @ 99% efficiency. According to reported testing, paper filters treat 25 micron particles @ 52% efficiency.

I will say, it would be cool to see the results of your testing on one of these filters. First step, order one. They are on the self,ready to ship.

[dannobee]

Joe, after reviewing the oil system diagram, I don't believe that [I]all[/I of the pressure drop can be attributed to the filter restriction. Since your second oil pressure tap is teed into the oil gallery that also contains the pressure relief valve and the main bearing feeds, it would stand to reason that the pressure would be lower at that point, even if you had no filter media in the filter housing. Also the built in bypass valve in the filter is likely set to open somewhere around 10-15 psi.

One thing that I did notice about the Porsche spin on adapters (i.e., 964, 993 filter housings that replace the oil cooler) is that the passages are slightly smaller than those drilled in the case, and the consoles have a few sharp turns that would further restrict flow and pressure.

Porsche likely knew this when they designed the disc type RSR oil filters.

The Hubb filter does look like a great design, but the housings would have greater flow if the filter was mounted horizontally rather than vertically.

[Henry Schmidt]

Originally Posted by dannobee

Joe, after reviewing the oil system diagram, I don't believe that [I]all[/I of the pressure drop can be attributed to the filter restriction. Since your second oil pressure tap is teed into the oil gallery that also contains the pressure relief valve and the main bearing feeds, it would stand to reason that the pressure would be lower at that point, even if you had no filter media in the filter housing. Also the built in bypass valve in the filter is likely set to open somewhere around 10-15 psi.

One thing that I did notice about the Porsche spin on adapters (i.e., 964, 993 filter housings that replace the oil cooler) is that the passages are slightly smaller than those drilled in the case, and the consoles have a few sharp turns that would further restrict flow and pressure.

Porsche likely knew this when they designed the disc type RSR oil filters.

The Hubb filter does look like a great design, but the housings would have greater flow if the filter was mounted horizontally rather than vertically.

The oil filters in early 911 that mount to the oil tank are located horizontally .