Stock Fuel/Water separator hp limit
#1
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Stock Fuel/Water separator hp limit
I'm thinking about replacing the stock fuel water separators in my boat. I was shocked to see that they are only 1/4" npt, I believe when I discussed this with Dave Weseldyk (yes I know I really messed up his last name), he said the stock fuel system is good up to 600 hp. Has anyone else tested the limits of this this part? I should be in the 650-670 range, so I think I should at least think about replacing this. Also does anyone know what the flow limit is on the stock filter?
#2
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I would think 600hp is highly optimistic...but thats me, I did away with mine totally, also changed the tank outlet, was running little over 700 with a procharged setup(both carb and EFI) and never had a issue. But 1/4 I saw as well and thought even mild street stuff gets 3/8, I would think 450hp...
#4
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I used a housing meant for a diesel - less expensive than the "high performance" ones yet with the same larger ports - been to many years now, so I forget from where....
#5
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I ended up buying the Hardin Marine filter heads. With the filter, they were $89 ea. Not the cheapest option, but a lot cheaper than the Teagues which look like the same unit, and they didn't include the filters.
#6
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#7
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This is the filter I use and have room for on my stock 502 mpi mags. It fits the stock filter head and filters much better than the short 25 micron ones.
https://www.mercurymarine.com/en/us/...are/fuel-care/
https://www.mercurymarine.com/en/us/...are/fuel-care/
#8
https://www.fstperformance.com/rpm500
This is the one I'm using. Not cheap, but neither is my engine.
-12 O- ring ports
This is the one I'm using. Not cheap, but neither is my engine.
-12 O- ring ports
Last edited by vintage chromoly; 04-29-2017 at 10:35 AM.
#9
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https://www.fstperformance.com/rpm500
This is the one I'm using. Not cheap, but neither is my engine.
-12 O- ring ports
This is the one I'm using. Not cheap, but neither is my engine.
-12 O- ring ports
#10
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I pump my fuel thru the fuel/water seperator filter vs 'suck it' through. That increases the volume any filter and head will flow.