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Old 04-23-2020, 01:46 PM   #1
AnthonyG
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Question oil filter restriction orifice

Prior to 1st time install of oil filter system & after cleaning, i checked the inlet orifice restriction fitting & it measured .070". Think I've read it s/b 1/16", .063"? Am I OK @ .007" over @ .070"?
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Old 04-23-2020, 03:47 PM   #2
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Default Re: oil filter restriction orifice

I wouldn't think it would make that much difference.
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Old 04-23-2020, 05:22 PM   #3
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Default Re: oil filter restriction orifice

Hard to believe that .007 would make much of a difference. Piece of notebook writing paper is .005 ". I would use it.
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Old 04-23-2020, 10:30 PM   #4
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Default Re: oil filter restriction orifice

Quote:
Originally Posted by AnthonyG View Post
Prior to 1st time install of oil filter system & after cleaning, i checked the inlet orifice restriction fitting & it measured .070". Think I've read it s/b 1/16", .063"? Am I OK @ .007" over @ .070"?
I agree that the size will not present any problem.

While you are checking things out check for the two oil return holes in the center tube.
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Old 04-24-2020, 08:36 AM   #5
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Default Re: oil filter restriction orifice

Iíll go w it. thought itíd be fine but always best to check. I knew from previous threads too big on that diameter would effect oil pressure in the engine.
Iíll check for being clear & size of oil return tube holes as well.
Thx for the help!
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Old 04-24-2020, 08:44 AM   #6
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Default Re: oil filter restriction orifice

The DIFFERENCE in area between the two sizes is 0.0007312 sq. in.! That's way less than one of them curly, blond hairs. DD
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Old 04-24-2020, 09:27 AM   #7
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Default Re: oil filter restriction orifice

Copy Dat!
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Old 04-24-2020, 02:58 PM   #8
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Default Re: oil filter restriction orifice

If you thick a restrictor in the filter line will prevent circulation, just leave the filter body cap loose. Don't ask how I know that!
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Old 04-25-2020, 05:01 PM   #9
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Default Re: oil filter restriction orifice

Not sure what ur saying? I wasn’t concerned about restrictor would stop flow, my only concern was if restrictor hole was too large it would reduce oil pressure to engine. Leaving filter body cap loose sounds messy?
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Old 04-25-2020, 05:12 PM   #10
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Default Re: oil filter restriction orifice

Guys, the factory spec for that restrictor fitting was .058 - .063.
Now to me, if it were .070", I'd solder it up and bring it back within spec.
Yeah, it may not make a difference but then again, it just may.
For a the minimum effort to do it correct - well, why not do it correct?
If .070" was good enough, I'd think Ford would have opened up the spec. The wider the spec, the cheaper to produce.
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Old 04-26-2020, 07:02 AM   #11
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Default Re: oil filter restriction orifice

A .060" orifice has 75% of the area of a .070" orifice. So the larger one will flow 25% more than the .060" will. Does it matter? Maybe not,but I'm with Kube here...


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Old 04-26-2020, 07:23 AM   #12
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Default Re: oil filter restriction orifice

Quote:
Originally Posted by Kube View Post
Guys, the factory spec for that restrictor fitting was .058 - .063.
Now to me, if it were .070", I'd solder it up and bring it back within spec.
Yeah, it may not make a difference but then again, it just may.
For a the minimum effort to do it correct - well, why not do it correct?
If .070" was good enough, I'd think Ford would have opened up the spec. The wider the spec, the cheaper to produce.
Quote:
Originally Posted by cadillac512 View Post
A .060" orifice has 75% of the area of a .070" orifice. So the larger one will flow 25% more than the .060" will. Does it matter? Maybe not,but I'm with Kube here...


Terry
In a test, with an .060 dia. restrictor hole, at idle speed, 5 quarts of oil flowed thru the filter in 11 minutes.
So long as the restrictor does not exceed the flow capabilities of the two .063 dia. return holes there are not any issues.
The larger restrictor hole may in fact be an advantage because it will flow more oil in a given time frame.
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Old 04-26-2020, 09:47 AM   #13
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Default Re: oil filter restriction orifice

I'm running a remote filter housing and ford spin on. I have installed a .062 restrictor fitting in the RETURN line fitting to the engine. this is so there will unrestricted flow to the filter housing with no chance of it becoming plugged. Clean oil can not close the restrictor. The longer the oil is in the can it will have a chance to cool and better filtering. Something that works for me. Oil pressure is good, no issues there. Your thoughts?

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Old 04-26-2020, 09:55 AM   #14
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Default Re: oil filter restriction orifice

That's what I'm doing as well. Makes sense to me...just have to make sure the gasket (if using the OEM can) is in good order since the can will have full oil pressure with the orifice in the return side. I'm also using an aftermarket filter base and a spin-on bypass filter (Baldwin B50) so the filter can gasket is not an issue.



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