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How do I convert female oil filter mount to use automotive filter?

FORANE

FORANE

Well Known Member
We have a O-320 in our 9A. I planned to use one of the Napa automotive filters I have read some use. On first oil change I discovered our oil filter mount takes a male threaded oil filter (i.e. the mount is threaded female).

I understand the female mounts were made to insure a bypass filter was used with that motor; is this correct? In any case, the Napa filter I planned to use is a bypass filter from what I have read.

So, how does one convert the oil filter mount to male?
 
3/4-16 thread I think, same as a Ford, Auto parts store or speed shop like Jegs or Summit Racing will have the threaded insert. That's where I got mine.
 
Double nut the 3/4-16 nipple on any used filter and remove it. Or, use a band saw to cut the flange in two places to just shy of the nipple and twist to finish the job, it will drop right out.
 
Walt said:
IMHO only, there are better ways to save 10 bucks.
Click to expand...

Walt, I have installed a bypass filter on my Rocket and it might give you heart palpitations when I tell you what filter media it uses. Fair warning!



Ready?


...



Toilet paper.
 
rocketbob said:
Walt, I have installed a bypass filter on my Rocket and it might give you heart palpitations when I tell you what filter media it uses. Fair warning!



Ready?


...



Toilet paper.
Click to expand...

These were used on many class 8 trucks years ago, they were very good for removing the fine soot from combustion. Today they use the centrifugal separators. Have you seen a significant improvement in your oil sample analysis?
 
BillL said:
These were used on many class 8 trucks years ago, they were very good for removing the fine soot from combustion. Today they use the centrifugal separators. Have you seen a significant improvement in your oil sample analysis?
Click to expand...

Not flying with it yet. I looked at centrifugal separators and concluded that it was not a good idea to try to use one since I do acro.
 
BillL said:
These were used on many class 8 trucks years ago, they were very good for removing the fine soot from combustion. Today they use the centrifugal separators. Have you seen a significant improvement in your oil sample analysis?
Click to expand...

Not flying with it yet. I looked at centrifugal separators and concluded that it was not a good idea to try to use one since I do acro.

Recently I looked at a 172 that had an Amsoil bypass filter installed and it was approved by the FAA via 337.
 
rocketbob said:
Not flying with it yet. I looked at centrifugal separators and concluded that it was not a good idea to try to use one since I do acro.

Recently I looked at a 172 that had an Amsoil bypass filter installed and it was approved by the FAA via 337.
Click to expand...

I am still considering the centrifugal as it would remove all the lead, but I will get flying first. Good point about acro - it does not spin well when flooded. Actually, a good hydraulic filter is 3-5 microns and could serve as a good trickle bypass filter with an orificed feed and a back pressure gage to indicate capacity. Could be incorporated with a full inverted system and a scavage pump. Ughhh - too much experimental thinking. Back to work.
 
Last edited:
FORANE said:
We have a O-320 in our 9A. I planned to use one of the Napa automotive filters I have read some use. On first oil change I discovered our oil filter mount takes a male threaded oil filter (i.e. the mount is threaded female).

I understand the female mounts were made to insure a bypass filter was used with that motor; is this correct? In any case, the Napa filter I planned to use is a bypass filter from what I have read.

So, how does one convert the oil filter mount to male?
Click to expand...

Check with your local NAPA auto parts. They have a fitting that will do what you want. It has a part number...... If I can find it, I will post it here.
 
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