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  #51  
Old 06-09-2022, 08:46 PM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,907
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Originally Posted by rongawer View Post
Here's my new S10 housing with an oil vent (the reusable version of poking a nail in the filter). Beautiful craftsmanship.
I think I will need this to be explained to me. What is the intent for this hole?
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  #52  
Old 06-10-2022, 08:32 AM
rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
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Originally Posted by Bavafa View Post
I think I will need this to be explained to me. What is the intent for this hole?
The main intent of it is to minimize oil mess during changes. It does this by providing a vent port, or vacuum breaker, if installed with the port facing upward, or a drain port with the port facing down. If installed horizontally, it still provides a vent port, but may or may not be worth it to you. In all cases, it allows you to drain the oil from the filter in a controlled manner.

I experience essentially no oil dripped on the engine at change.

The port threads are 7/16-20 and work with an AN814-4 plug which has an o-ring.
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- RV10, N762G, Build in progress.
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  #53  
Old 06-10-2022, 09:12 AM
Bavafa Bavafa is offline
 
Join Date: Oct 2007
Location: Sacramento, CA
Posts: 3,907
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Quote:
Originally Posted by rongawer View Post
The main intent of it is to minimize oil mess during changes. It does this by providing a vent port, or vacuum breaker, if installed with the port facing upward, or a drain port with the port facing down. If installed horizontally, it still provides a vent port, but may or may not be worth it to you. In all cases, it allows you to drain the oil from the filter in a controlled manner.

I experience essentially no oil dripped on the engine at change.

The port threads are 7/16-20 and work with an AN814-4 plug which has an o-ring.
Nice mod and thanks for explaining. Are you planning on putting a safety wire on the plug?
This looks like it was machined to accommodate for the o-ring.
__________________
Mehrdad
N825SM RV7A - IO360M1B - SOLD
N825MS RV14A - IO390 - SOLD
N258SM RV14A - IO390EXP119 - Out of Paint shop & flying
Dues paid
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  #54  
Old 06-10-2022, 03:58 PM
rongawer rongawer is offline
 
Join Date: Dec 2007
Location: Brentwood, CA
Posts: 921
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Originally Posted by Bavafa View Post
Nice mod and thanks for explaining. Are you planning on putting a safety wire on the plug?
This looks like it was machined to accommodate for the o-ring.
I do safety wire the plug through the filter housing to the filter base, same piece of wire...easy.

I do it out of habit, although I've never actually had an oil filter come loose on anything I've installed one on, including an enduro bike which gets much more vibration and pounding than any airplane ever will...but that's a topic for the "to safety wire, or not to safety wire your oil filter" debate list and probably not what you're asking.

The plug opening is in fact machined for an o-ring. It was milled to the dimensional standard for an AN814-4 plug, but not anything I take credit for - I bought it from K&P Engineering that way. (usaoilfilters.com)
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- RV10, N762G, Build in progress.
- Several others that are now just great memories for me.
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