Any difference in these Oil Filters ????

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muscl car

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Jul 8, 2001
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Gallatin Tennessee

frankz

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Aug 24, 2009
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Talked to Shafiroff racing today over type of oil to use and filters . They mentioned 10/30wt racing oil and using either Wix Racing oil filter or a Moroso oil filter

Any pro's or con's on either of these filters

Moroso oil filter .. https://www.jegs.com/i/Moroso/710/2...591PelNwLn0UTA3T8wtPsAszXay8bKU4aAlA3EALw_wcB


Wix racing oil filter ...

https://www.jegs.com/i/Wix+Racing+F...-XAHa7xZBiuJqbb8gAoCVKtxF10eXJPIaAmjOEALw_wcB
If you are serious about protecting your motor you need to consider a Canton 25-106 non bypass filter with 8 micron filtration .
 

Gary S

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Is your filter still mounted in the factory location on the block or is it relocated to somewhere else? Both of those filters have an antidrainback valve which shouldn't be on a Chevy small block with filter in factory location and position.
 
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biker

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Dec 7, 2014
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The wix filter doesn't say what micron level of filtration, but wix makes good stuff. I'm cautious with stuff market as "racing" products. What makes it a "racing" filter? Maybe it sacrifices particle size in order to keep oil from bypassing the filter media at the constant high rpm/oil pressure that a race engine would see? So maybe it doesn't filter as well at street rpm levels, and your monster probably doesnt need much rpm to make power.

Case in point: because I live in the middle of f'ing nowhere, I couldn't find a good ol' 14x3 air filter, so bought all I could find here, a Wix "racing" 14x3. Looked nice, and while it flowed lots of air, the smallest things it would filter out were birds and larger rodents. Which is great for a 300 mile at a time race car that gets rebuild every month; not so much good for an engine you want to keep the rings in for at least 2 years.

However, Shafiroff certainly knows their stuff, maybe for peace of mind, ask them what makes a "racing" filter better, and will your engine see such conditions.
 

muscl car

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Is your filter still mounted in the factory location on the block or is it relocated to somewhere else? Both of those filters have an antidrainback valve which shouldn't be on a Chevy small block with filter in factory location and position.
Factory filter location !!!!
 

muscl car

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Jul 8, 2001
24,961
Gallatin Tennessee
The wix filter doesn't say what micron level of filtration, but wix makes good stuff. I'm cautious with stuff market as "racing" products. What makes it a "racing" filter? Maybe it sacrifices particle size in order to keep oil from bypassing the filter media at the constant high rpm/oil pressure that a race engine would see? So maybe it doesn't filter as well at street rpm levels, and your monster probably doesnt need much rpm to make power.

Case in point: because I live in the middle of f'ing nowhere, I couldn't find a good ol' 14x3 air filter, so bought all I could find here, a Wix "racing" 14x3. Looked nice, and while it flowed lots of air, the smallest things it would filter out were birds and larger rodents. Which is great for a 300 mile at a time race car that gets rebuild every month; not so much good for an engine you want to keep the rings in for at least 2 years.

However, Shafiroff certainly knows their stuff, maybe for peace of mind, ask them what makes a "racing" filter better, and will your engine see such conditions.

The Wix racing filters down to 35 microns
 

biker

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Dec 7, 2014
8,165
Canada
The Wix racing filters down to 35 microns
Ok, and the Moroso is 27. I don't know enough about filters to know if that is a big difference. But, neither has a bypass valve, so it will probably be necessary to watch your temps, rpms and oil pressure til you know how the pressure behaves with no bypass. And are they sacrificing fine filtration to make sure u have good flow through the filtering media at high rpm? Only to have way less fine filtration at street rpms where u will spend most of your time? Again, probably good questions for Shafiroff.
And all of this may not matter...I'm assuming this is a street car! Maybe it's a race car and I should just shut my cake hole.
 

Lowend

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Mar 25, 1999
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In general, I trust Wix Oil Filters more than any non-OEM manufacturer. Consistently good quality. I guarantee that Moroso is using a 3rd party manufacturer for their oil filters. 3rd party manufacturers make me nervous.

Racing filters actually have worse filtration than a conventional filter. They trade allowing larger particles through the media for more gross flow. The plain old street versions of filters have lower micron ratings.
With filter flow, you really only have 2 toggles:
The surface area of the filtration media. Filter media flows X CFM per square inch, so more square-inches = more flow
The size of the "holes" that let stuff through. Larger holes = more flow, but allow larger particles through.

I've never understood why people want filters without bypass valves. If the filter clogs and there's no bypass the engine gets starved. Go from a situation where something could get through the bypass, to a low oil pressure condition.
 

muscl car

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Jul 8, 2001
24,961
Gallatin Tennessee
In general, I trust Wix Oil Filters more than any non-OEM manufacturer. Consistently good quality. I guarantee that Moroso is using a 3rd party manufacturer for their oil filters. 3rd party manufacturers make me nervous.

Racing filters actually have worse filtration than a conventional filter. They trade allowing larger particles through the media for more gross flow. The plain old street versions of filters have lower micron ratings.
With filter flow, you really only have 2 toggles:
The surface area of the filtration media. Filter media flows X CFM per square inch, so more square-inches = more flow
The size of the "holes" that let stuff through. Larger holes = more flow, but allow larger particles through.

I've never understood why people want filters without bypass valves. If the filter clogs and there's no bypass the engine gets starved. Go from a situation where something could get through the bypass, to a low oil pressure condition.


I'm just going by what the customer service rep at Shafiroff racing told me this morning
 

1980RS

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Jun 17, 2006
7,794
MN
Best oil filters I have ever used were the AC Delco Duraguard gold filters, the next best are the Wix filters for me.
 

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