I decided to run a larger filter on my Toyota 4Runner 06 V6 I installed a Motorcraft FL-400S last night and I got to thinking could it be a problem if the bypass pressure setting is different from the stock smaller Denso filter setting? Is this something to be worried about going oversized?
Oversize filter bypass ?
- Thread starter Fbear
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When switching to an oversize filter you need to make sure the thread type is exactly the same and the bypass setting needs to be less than or equal to the stock filter. Also, if your filter is on the bottom of your engine compartment you need to make sure you don't have any clearance issues. My recommendation, just use the recommended size and save yourself the trouble.
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Most bypass at 9-12 PSID so It should no be a concern. It should rarely be in bypass if at all esp with the larger unit. Does the 400S have a bypass?
gathermewool
Site Donor 2023
What's your OCI? Why are you going to a larger filter?
Most likely the bypass is the same, but you can look the filter up here on wix filters and it will show you the bypass settings. What is the denso part number?
http://www.wixfilters.com/filterlookup/index.asp
http://www.wixfilters.com/filterlookup/index.asp
dnewton3
Staff member
You'll be fine, most likely.
Presuming your OEM filter was the equivilant of the WIX 51348, the Wix 51516 (same as the FL400) is simply an upsized verion. All the operating parameters are the same. The larger filter even has a slightly better efficiency (at least in the Wix lineup).
Part Number: 51348
UPC Number: 765809513488
Principal Application: Various Chrysler/Jeep (82-10), Various GM, Saturn (85-07), Lexus (90-10), Saab (67-09), Suzuki (86-02), Toyota (88-10), Ford (03-10), Mazda, Mercury (05-10), Yugo (86-89), Various Lawn&Garden, Farm Equip.
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 3.404
Outer Diameter Top: 2.921
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=21/37
Burst Pressure-PSI: 275
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.734 2.430 0.226
Part Number: 51516
UPC Number: 765809515161
Principal Application: Ford/Lincoln/Mercury (81-09), Chrysler/Jeep/Mitsubishi (02-09), Mazda Trucks (94-10), Various Industrial Equipment
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 4.828
Outer Diameter Top: 2.921
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=14/31
Burst Pressure-PSI: 275
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.734 2.430 0.226
Presuming your OEM filter was the equivilant of the WIX 51348, the Wix 51516 (same as the FL400) is simply an upsized verion. All the operating parameters are the same. The larger filter even has a slightly better efficiency (at least in the Wix lineup).
Part Number: 51348
UPC Number: 765809513488
Principal Application: Various Chrysler/Jeep (82-10), Various GM, Saturn (85-07), Lexus (90-10), Saab (67-09), Suzuki (86-02), Toyota (88-10), Ford (03-10), Mazda, Mercury (05-10), Yugo (86-89), Various Lawn&Garden, Farm Equip.
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 3.404
Outer Diameter Top: 2.921
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=21/37
Burst Pressure-PSI: 275
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.734 2.430 0.226
Part Number: 51516
UPC Number: 765809515161
Principal Application: Ford/Lincoln/Mercury (81-09), Chrysler/Jeep/Mitsubishi (02-09), Mazda Trucks (94-10), Various Industrial Equipment
All Applications
Style: Spin-On Lube Filter
Service: Lube
Type: Full Flow
Media: Paper
Height: 4.828
Outer Diameter Top: 2.921
Outer Diameter Bottom: Closed
Thread Size: 3/4-16
By-Pass Valve Setting-PSI: 8-11
Anti-Drain Back Valve: Yes
Beta Ratio: 2/20=14/31
Burst Pressure-PSI: 275
Max Flow Rate: 7-9 GPM
Nominal Micron Rating: 21
Gasket Diameters
Number O.D. I.D. Thk.
Attached 2.734 2.430 0.226
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I am using the WIX 51516 in place of the 51348 on my 1MZFE motor.
Note that the 51516 has slightly better filtration rating.
2/20 = 14/31 vs 2/20 = 21/37
Using the 2/20 = 14/31 number.......
Beta/Beta = Particle size/Particle size.
Breaking down the 2/20 beta into "efficiency".....
2 is 50% and 20 is 95%
you get 50%/95% = 14micron/31micron
So the filter is 50% at 14 micron particle size and 95% at 31 micron particle size.
Efficiency is a number that is used extensively to compare filters to each other.
It is the "Industry Standard" for comparison of filtration capabilites.
Wix lists the efficiency for EACH different oil filter that they sell....whereas most companies only list those values for 1 filer in their lineup......you will normally see this in small print on the box.....if that efficiency number is listed for a different filter number than what is in the box.....you do no really know what the efficiency rating is for the filter that is inside the box.
Of course.....we only care about the efficiency for the filter that WE are buying......
Note that the 51516 has slightly better filtration rating.
2/20 = 14/31 vs 2/20 = 21/37
Using the 2/20 = 14/31 number.......
Beta/Beta = Particle size/Particle size.
Breaking down the 2/20 beta into "efficiency".....
2 is 50% and 20 is 95%
you get 50%/95% = 14micron/31micron
So the filter is 50% at 14 micron particle size and 95% at 31 micron particle size.
Efficiency is a number that is used extensively to compare filters to each other.
It is the "Industry Standard" for comparison of filtration capabilites.
Wix lists the efficiency for EACH different oil filter that they sell....whereas most companies only list those values for 1 filer in their lineup......you will normally see this in small print on the box.....if that efficiency number is listed for a different filter number than what is in the box.....you do no really know what the efficiency rating is for the filter that is inside the box.
Of course.....we only care about the efficiency for the filter that WE are buying......
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