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04-21-2019, 07:51 AM | #1 |
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Join Date: Feb 2019
Location: New Zealand
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Oil flow in a factory bypass system?
Ok I am confused.... Normal some would say, but I will leave my family out of this...
I just took apart a factory bypass oil filter system... And I am buggered if I can see how the oil passes through the filter? Oil comes in the side of the housing..... Goes out the bottom... what am I missing here? How does it pass through the filter when the inlet and outlet are both outside the filter? I know the answer will be simple but it's not coming to me and googling it did not help.... |
04-21-2019, 08:08 AM | #2 |
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Join Date: May 2010
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Re: Oil flow in a factory bypass system?
look at the center post, a ways down is a hole in the side
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04-21-2019, 08:11 AM | #3 |
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Re: Oil flow in a factory bypass system?
After the oil passes thru the filter it exits thru (2) i/16" holes in the center tube and out the bottom.
The center tube holes are at about the same level as the inlet tube and with the inlet fitting removed it may be possible to see at least one of the holes thru the inlet hole.
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DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES Last edited by 51 MERC-CT; 04-21-2019 at 08:17 AM. |
04-21-2019, 08:11 AM | #4 |
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Re: Oil flow in a factory bypass system?
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04-21-2019, 08:14 AM | #5 | |
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Re: Oil flow in a factory bypass system?
Quote:
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04-21-2019, 09:54 AM | #6 |
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Location: Sharon, Conn.
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Re: Oil flow in a factory bypass system?
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Bill in Conn. |
04-21-2019, 10:10 AM | #7 | |
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Re: Oil flow in a factory bypass system?
Quote:
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04-21-2019, 02:33 PM | #8 |
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Location: Chelmsford, ON Canada
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Re: Oil flow in a factory bypass system?
Be carefull when reassembling, if you have removed the brass fittings that screw into the filter canister. One of them has a restriction orifice, and it screws into the side of the canister, and connects to the steel line coming from the back of the engine by the left cylinder head. The purpose of the restriction is to control the amount of oil passing through the filter, while maintaining a restriction in the line to maintain oil pressure in the engine.
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04-21-2019, 02:44 PM | #9 |
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Join Date: May 2010
Posts: 2,173
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Re: Oil flow in a factory bypass system?
>>>holes are smaller than I was looking for and as you say filled with sludge>>>
As Yogi might say, a filter is better than nothing till it isn't. 8^) Jack E/NJ |
04-21-2019, 04:02 PM | #10 |
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Join Date: Nov 2012
Location: Wichita KS
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Re: Oil flow in a factory bypass system?
The first diagram may be a one that 51 Merc posted in an earlier thread. The return holes are in the stand pipe, they are just a little difficult to find.
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04-21-2019, 05:31 PM | #11 | |
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Location: New Zealand
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Re: Oil flow in a factory bypass system?
Quote:
Should look good in the boat... Painted cream with new decals, brass fittings and copper lines. I can mount it on the hull bulkhead as long as it has the correct fall for the oil to return to the sump. I assume it is just gravity return? |
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04-21-2019, 06:56 PM | #12 | |
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Re: Oil flow in a factory bypass system?
Quote:
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04-21-2019, 07:13 PM | #13 |
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Join Date: Feb 2019
Location: New Zealand
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Re: Oil flow in a factory bypass system?
I understand the pressure going into the filter.... Ok now thinking about it... It's a sealed filter system so it must be pressure pushing the return back into the engine as that pressure has no place else to go.... Slow learner....
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04-21-2019, 07:17 PM | #14 |
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Re: Oil flow in a factory bypass system?
pressurized rite into the pan, except when your cover leaks
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04-21-2019, 08:43 PM | #15 |
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Re: Oil flow in a factory bypass system?
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04-21-2019, 10:03 PM | #16 |
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Location: Qld, Australia
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Re: Oil flow in a factory bypass system?
Pictures of the boat??
I had mates who had a flathead powered boat, we used to go to a lake somewhere around Fielding and burn around in it.that was in the 60,s. Lawrie |
04-21-2019, 10:14 PM | #17 |
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Re: Oil flow in a factory bypass system?
The boat still a wreak, I am starting the wood work in a couple of months when I get it to my workshop.
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04-21-2019, 10:14 PM | #18 |
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Re: Oil flow in a factory bypass system?
more...
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04-21-2019, 10:15 PM | #19 |
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Re: Oil flow in a factory bypass system?
more
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04-21-2019, 10:16 PM | #20 |
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Re: Oil flow in a factory bypass system?
another...
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