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How Much Oil will a -8 an fitting flow??

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Old May 22, 2010 | 04:33 PM
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Default How Much Oil will a -8 an fitting flow??

I want to run my oil lines through the galley plugs, the rear plug is shrouded by the block, I can't use a -10 fitting, I cant use the special -10 an made for this because of the length of the fitting,(car is awd) any answers? Thanks
These pics are of the -10 fitting, I don't think ginding is an option?? not much meat around the rear oil pan bolt. I tought the banjo fitting was the answer, but the bulb is too fat to install the bolt.

Last edited by sparkwirez06; Sep 5, 2012 at 05:22 PM.
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Old May 22, 2010 | 04:37 PM
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could you die grind some clearance for that banjo fitting???
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Old May 22, 2010 | 04:42 PM
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That was my first thought, even made a longer bolt so I could space the banjo fitting over the lip, I have alluminum block with a crack in it where the rear oil pan bolt is, made me not want to grind it.
I think an -8 will clear it.
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Old May 22, 2010 | 05:37 PM
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Over what distance will the oil be moved?
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Old May 22, 2010 | 06:56 PM
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Its only a 1/16th of an inch difference. The external pump isn't too far away to cause cavitation. Or use a bulk head fitting to space a size -10 fitting if possible.
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Old May 22, 2010 | 07:28 PM
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-10 AN tubing has almost twice (190%) the flow capacity of -8 AN tubing. If the distance is small (several inches as opposed to feet) it will not likely matter. On the other hand, if the distance is large (several feet as opposed to inches) the work around is to use -8 AN fittings where you have to, but convert to -10 AN for the longest section. This will minimize the pressure & volume drop involved.
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Old May 22, 2010 | 07:37 PM
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Sorry. Its What I ment to say. Can use the -8 and Then go up to the -10 so There wont be a bad restriction.
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Old May 22, 2010 | 07:56 PM
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I can use 10 an lines on the system except for where it enters the rear oil galley.
The oil comes out of the front port, through the cooler,under the truck,through the filter, under the ds rocker panel, then returns to the rear port where it feeds the oil galley. will the -8 leave enough oil into the galley to lube the engine?
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Old May 22, 2010 | 08:17 PM
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Originally Posted by sparkwirez06
I can use 10 an lines on the system except for where it enters the rear oil galley.
The oil comes out of the front port, through the cooler,under the truck,through the filter, under the ds rocker panel, then returns to the rear port where it feeds the oil galley. will the -8 leave enough oil into the galley to lube the engine?
Assuming that using 100% -10 AN would have been adequate, and I think it would have been, then the system you describe will be adequate. Simply put, having the -8 AN only at the end of the run will make very little difference.
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Old May 22, 2010 | 09:28 PM
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Thanks, On close examination of the fittings I found that the 10an to 16mm fitting closed down to the same diameter as the 8an!!
1st pic -8 2nd pic -10/16mm 3rd pic 16mm end of the -10/16mm

Last edited by sparkwirez06; Sep 5, 2012 at 05:22 PM.
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Old May 22, 2010 | 09:56 PM
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Interesting.
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Old Jun 3, 2010 | 09:30 PM
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well I figured if the engine was designed with 1/2" galleys it's for a reason, so i modified the "aviaid oil" fitting so i could use 10an all the way.

Last edited by sparkwirez06; Sep 5, 2012 at 05:22 PM.
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Old Sep 21, 2010 | 12:52 PM
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Default nice work

is this for your oil filter to be moved
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