Any options on a larger filter for a Subaru 2.5L???
I've been running stock-size PureOnes and Wix...I have lots of room for length...
I've been running stock-size PureOnes and Wix...I have lots of room for length...
Larger filter for a 2.5L Subaru Outback??
- Thread starter deeter16317
- Start date
- Status
Originally Posted By: deeter16317
Any options on a larger filter for a Subaru 2.5L???
I've been running stock-size PureOnes and Wix...I have lots of room for length...
On my 2007 Outback any longer filter would have the element too close to the headers.
IMO, the stock filters work well and nothing longer is needed.
Take care, bill
Any options on a larger filter for a Subaru 2.5L???
I've been running stock-size PureOnes and Wix...I have lots of room for length...
On my 2007 Outback any longer filter would have the element too close to the headers.
IMO, the stock filters work well and nothing longer is needed.
Take care, bill
- Joined
- Sep 28, 2002
- Messages
- 39,793
Here's what's spec'd (I guess year and model isn't an issue with Subbies)
Part Number: 51365
UPC Number: 765809513655
Principal Application: Ford (92-97), Honda (00-07), Infiniti/Nissan (95-08), Mazda (97-07), Mercury (91-96), Saab (05-06), Subaru (88-08), Cub Cadet, Yanmar, John Deere, Kawasaki, Kobelco, Outboard Marine Engines
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 2.577
Outer Diameter Top: 2.685
Outer Diameter Bottom: Closed
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=15/22
Burst Pressure-PSI: 300
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.475 2.173 0.233
Here's the biggie (well, one biggie)
Part Number: 51356
UPC Number: 765809513563
Principal Application: Acura (02-08), Chrysler Imports (92-06), Ford Probe (93-97), Honda (01-08), Infiniti/Nissan (96-08), Mazda (71-00), Mercury Villager (99-00), Mitsubishi (90-08), Saturn (04-07), Outboard Marine Engines, Various HD Equip.
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 3.402
Outer Diameter Top: 2.685
Outer Diameter Bottom: Closed
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=6/19
Burst Pressure-PSI: 363
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.475 2.173 0.233
Part Number: 51365
UPC Number: 765809513655
Principal Application: Ford (92-97), Honda (00-07), Infiniti/Nissan (95-08), Mazda (97-07), Mercury (91-96), Saab (05-06), Subaru (88-08), Cub Cadet, Yanmar, John Deere, Kawasaki, Kobelco, Outboard Marine Engines
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 2.577
Outer Diameter Top: 2.685
Outer Diameter Bottom: Closed
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=15/22
Burst Pressure-PSI: 300
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.475 2.173 0.233
Here's the biggie (well, one biggie)
Part Number: 51356
UPC Number: 765809513563
Principal Application: Acura (02-08), Chrysler Imports (92-06), Ford Probe (93-97), Honda (01-08), Infiniti/Nissan (96-08), Mazda (71-00), Mercury Villager (99-00), Mitsubishi (90-08), Saturn (04-07), Outboard Marine Engines, Various HD Equip.
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 3.402
Outer Diameter Top: 2.685
Outer Diameter Bottom: Closed
Thread Size: 20X1.5 MM
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=6/19
Burst Pressure-PSI: 363
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.475 2.173 0.233
Like Bill said, it doesn't need a bigger filter. I run the normal sized WIX filter for 15,000 miles on my two Subaru, and the used oil analysis results are stellar.
Gary Allan said:
Last edited:
Year does matter.
Anything bigger or longer will have contact or be too close to the headers.
Here is a photo of the filter and header setup.
Longer would have it closer to the headers and even with the heat shields they get hot since the cats are in there too. (you can see the cat in the lower left hand corner)
Bill
Anything bigger or longer will have contact or be too close to the headers.
Here is a photo of the filter and header setup.
Longer would have it closer to the headers and even with the heat shields they get hot since the cats are in there too. (you can see the cat in the lower left hand corner)
Bill
WOW, that to darn close as it is, what a stupid set up.
Unless there is good air flow around that area, the filter is going to pick up a lot of heat from the exhaust.
Shame, shame.
Unless there is good air flow around that area, the filter is going to pick up a lot of heat from the exhaust.
Shame, shame.
Thanks for all the responses...I have a 1997, and could run the filter that's on my Cummins if it would fit the threads (it has that much room).
I'm going to look into the filter Gary posted, don't really want a filter with different threads...
I'm looking to do this since I'm currently running 5k OCIs, and might consider longer OCIs based on used oil analysis. The larger filter is just peace of mind (and a touch more volume)...
I'm going to look into the filter Gary posted, don't really want a filter with different threads...
I'm looking to do this since I'm currently running 5k OCIs, and might consider longer OCIs based on used oil analysis. The larger filter is just peace of mind (and a touch more volume)...
Originally Posted By: deeter16317
Thanks for all the responses...I have a 1997, and could run the filter that's on my Cummins if it would fit the threads (it has that much room).
I'm going to look into the filter Gary posted, don't really want a filter with different threads...
I'm looking to do this since I'm currently running 5k OCIs, and might consider longer OCIs based on used oil analysis. The larger filter is just peace of mind (and a touch more volume)...
Titan HAS run 15k on the *stock* size filter with PERFECT used oil analysis.
Not needed. Just stay with the stock filter.
WATCH your used oil analysis for extended OCIs. My 8-9 month one for my Subaru with PP stunk.
I'll stay with NO more than 6 months or 7.5k miles MAX.
Take care, Bill
Thanks for all the responses...I have a 1997, and could run the filter that's on my Cummins if it would fit the threads (it has that much room).
I'm going to look into the filter Gary posted, don't really want a filter with different threads...
I'm looking to do this since I'm currently running 5k OCIs, and might consider longer OCIs based on used oil analysis. The larger filter is just peace of mind (and a touch more volume)...
Titan HAS run 15k on the *stock* size filter with PERFECT used oil analysis.
Not needed. Just stay with the stock filter.
WATCH your used oil analysis for extended OCIs. My 8-9 month one for my Subaru with PP stunk.
I'll stay with NO more than 6 months or 7.5k miles MAX.
Take care, Bill
I run the 51356. I like it as it is a little easier to get in and out. Basically the same price.
Originally Posted By: Gary Allan
Here's what's spec'd (I guess year and model isn't an issue with Subbies)
Part Number: 51365
Beta Ratio: 2/20=15/22
Burst Pressure-PSI: 300
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Part Number: 51356
Beta Ratio: 2/20=6/19
Burst Pressure-PSI: 363
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Very different beta ratios...I would assume the latter (6/19) is the better filter? (Its been a while since I looked up beta ratio)
Here's what's spec'd (I guess year and model isn't an issue with Subbies)
Part Number: 51365
Beta Ratio: 2/20=15/22
Burst Pressure-PSI: 300
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Part Number: 51356
Beta Ratio: 2/20=6/19
Burst Pressure-PSI: 363
Max Flow Rate: 9-11 GPM
Nominal Micron Rating: 19
Very different beta ratios...I would assume the latter (6/19) is the better filter? (Its been a while since I looked up beta ratio)
I'm fumbling here...but...
Based on 1000 particles of 2u and 20u sizes, six particles @ 2u and 19 particles @ 20u would pass the filter..correct???
Based on 1000 particles of 2u and 20u sizes, six particles @ 2u and 19 particles @ 20u would pass the filter..correct???
I just ordered one of these online. The 51356 [the larger filter] is actually a buck or so cheaper.
Originally Posted By: deeter16317
I'm fumbling here...but...
Based on 1000 particles of 2u and 20u sizes, six particles @ 2u and 19 particles @ 20u would pass the filter..correct???
No.
I know its hard to grasp, it took me awhile.
2/20=6/19
That means 50% of 6u particles will make it through while 95% of the 19u particles will be captured.
Heres the math:
2-1=1 1/2 or 50%
20-1=19 19/20 or 95%
Its the left side that has the beta and the right has the microns.
b=beta
b-1/b
I'm fumbling here...but...
Based on 1000 particles of 2u and 20u sizes, six particles @ 2u and 19 particles @ 20u would pass the filter..correct???
No.
I know its hard to grasp, it took me awhile.
2/20=6/19
That means 50% of 6u particles will make it through while 95% of the 19u particles will be captured.
Heres the math:
2-1=1 1/2 or 50%
20-1=19 19/20 or 95%
Its the left side that has the beta and the right has the microns.
b=beta
b-1/b
Originally Posted By: dwendt44
WOW, that to darn close as it is, what a stupid set up.
Unless there is good air flow around that area, the filter is going to pick up a lot of heat from the exhaust.
Shame, shame.
You are assuming that heat is a bad thing. Actually, heat is a good thing to burn off condensation. Also, quick warm-ups contribute to better efficiency and less emissions. The problem is if the design results in EXCESSIVE heat. I have zero problems in my two Subaru in the hottest of ambient conditions, whether idling or pulling a steep grade at a high speed.
It's at least a non-issue...it might even be a design with a purpose of quicker warm-up as exhaust headers are quick to get hot. However, I do not know that for a fact. There's just not much surface area on that filter surface.
WOW, that to darn close as it is, what a stupid set up.
Unless there is good air flow around that area, the filter is going to pick up a lot of heat from the exhaust.
Shame, shame.
You are assuming that heat is a bad thing. Actually, heat is a good thing to burn off condensation. Also, quick warm-ups contribute to better efficiency and less emissions. The problem is if the design results in EXCESSIVE heat. I have zero problems in my two Subaru in the hottest of ambient conditions, whether idling or pulling a steep grade at a high speed.
It's at least a non-issue...it might even be a design with a purpose of quicker warm-up as exhaust headers are quick to get hot. However, I do not know that for a fact. There's just not much surface area on that filter surface.
- Joined
- Sep 28, 2002
- Messages
- 39,793
I don't think that the filter clearance in the image is bad at all. Lots of Chevy SBC's have headers a lot closer to the filter than that and live to talk about it.
So is the larger filter a "better" filter?
- Joined
- Sep 28, 2002
- Messages
- 39,793
If it's the same quality media, yes. It should have a lower velocity at all flow rates, which should improve efficiency ..and it should have higher holding capacity. Now whether you challenge any of the standard sized filter's capabilities is up for grabs.
- Status