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Old 09-10-2015, 07:04 AM   #81
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I thought so, so this means that this design needs some revision. Here are the pics of the system and the backwards filter.

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Here is my analysis of the system, if I got it wrong, someone let me know. If Im right the polishing filter with the gauge is wrong.

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I also want to add a bypass circuit for both underway filters.
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Old 09-10-2015, 07:08 AM   #82
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The pump is probably "pulling" the fuel thru the polishing filter.
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Old 09-10-2015, 07:18 AM   #83
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Yes, as I understand it you want the filter on the suction side of the pump to get the water out before the pump emulsifys the water.

Nonetheless on a Racor 500, the outlet is on the left side in this pic and the inlet is on the right side, so the flow in the filter is backwards.
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Old 09-10-2015, 08:44 AM   #84
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yes but, but, but... If it's a griffin then all is well.



And I suspect it's a ebay chinese knock off as even white griffins have labels and that one doesnt.
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Old 09-10-2015, 10:22 AM   #85
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The label is on the other side of the filter body I bet. Thry just spun it in the mount.

It's my understanding Racors are not designed to have the fuel pulled through them. But that might only effect the so called centrifugal action in them.
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Old 09-10-2015, 11:27 AM   #86
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Ok so I learn a lort from you all, I missed that that the filter was not a Racor and may be correct in the flow direction. I have 3 new Racor's so I will have to work on a new design.

I attached an installation diagram from the Racor 500. It seems to show they prefer the pump on the vacuum side, pulling rather that pushing, the emulsification issue.

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Old 09-10-2015, 11:59 AM   #87
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The label is on the other side of the filter body I bet. Thry just spun it in the mount.

It's my understanding Racors are not designed to have the fuel pulled through them. But that might only effect the so called centrifugal action in them.
The racor install pic (that greatlaker just posted) shows the "ideal" location for the pump on the pull side. It goes along with everyone using vacuum gauges and not pressure gauges as well.

I'll put $5 on the pump pulling fuel.
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Old 09-10-2015, 03:54 PM   #88
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The Fuel System Upgrade Project: Episode II

The filter is flipped around. I can assure you, I am not an idiot :-)

The mount allows it to rotate within it.
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Old 09-10-2015, 05:09 PM   #89
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Racors should always have the fuel pulled through by installing the pump after the filter.

Consider using JIC swivel Pushlock fittings when making the hose connections, no clamps necessary.
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Old 09-10-2015, 05:45 PM   #90
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The racor install pic (that greatlaker just posted) shows the "ideal" location for the pump on the pull side. It goes along with everyone using vacuum gauges and not pressure gauges as well.

I'll put $5 on the pump pulling fuel.

Sorry I meant pushed through them. Brain fart on my part.
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Old 09-10-2015, 07:46 PM   #91
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The filter is flipped around. I can assure you, I am not an idiot :-)

The mount allows it to rotate within it.
Not saying you are an idiot, but just how are you able to determine the filter is flipped around from a picture? Braille? A Spock mind meld? LOL

It makes sense in one aspect that if it actually is a racor and it's flipped, then the pump is pulling the fuel from the racors exit port because the exit port would flip to that side. easy to see.

However if its one of them chinese knock offs that look exactly like the racors and their in-out ports are the same as a griffin (a british knock off) then it just might not be flipped around at all.

And there's no way anyone can say for certain from the pic. Heres a chinese knock off from ebay. looks exactly like a racor but no label.



It doesnt really matter.
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