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Suitable Fuel Filter
- dcrahn
- Deck Hand
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Suitable Fuel Filter
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- Vessel Info: 1989 Carver 3807 Aft Cabin
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Re: Suitable Fuel Filter
If you're going to add another filter/assembly and you don't already have one, install a water separating fuel filter. Remember that filter assemblies with see-thru bowls are not allowed in a gasoline engine compartment so if you're getting an assembly with an interchangeable element in the middle, it can't have a see-through bowl. If you're getting a typical spin-on unit then no worries.
- dcrahn
- Deck Hand
- Posts: 53
- Joined: May 28th, 2015, 5:31 pm
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Re: Suitable Fuel Filter
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Re: Suitable Fuel Filter
dcrahn wrote:Source of the post As in my original post it's a GM 5.7.....
I got that but the brand makes a big difference. You can use the same filter assembly off the old engine but I would try to retrofit it to a location lower on the engine. A newer setup would have been done that way with a cover over the filter assembly or a Cool Fuel system. Again these mods were efforts to minimize vapour lock. Sticking with the same assembly/filter will make it easy to get replacements as everybody will carry them: Mercury 35-802893T or Quicksilver 35-802893Q01. Or you could get fancy if you want a better setup and go with a Racor unit:
https://www.westmarine.com/buy/racor--10-micron-spin-on-series-fuel-filter-water-separator-i-o-320r--484972?recordNum=12
- bud37
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Re: Suitable Fuel Filter
dcrahn wrote:Source of the post Are fuel filters on boats required to be USGA approved?
Here is some info regarding your question, hard to pick thru but may help.......
https://www.uscgboating.org/regulations ... YSTEM1.pdf
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Re: Suitable Fuel Filter
If you're re-using the assembly off the old engine, you're all good.
- dcrahn
- Deck Hand
- Posts: 53
- Joined: May 28th, 2015, 5:31 pm
- Vessel Info: 1984 Carver 2687 Monterey
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Re: Suitable Fuel Filter
Viper wrote:Source of the postdcrahn wrote:Source of the post As in my original post it's a GM 5.7.....
I got that but the brand makes a big difference. You can use the same filter assembly off the old engine but I would try to retrofit it to a location lower on the engine. A newer setup would have been done that way with a cover over the filter assembly or a Cool Fuel system. Again these mods were efforts to minimize vapour lock. Sticking with the same assembly/filter will make it easy to get replacements as everybody will carry them: Mercury 35-802893T or Quicksilver 35-802893Q01. Or you could get fancy if you want a better setup and go with a Racor unit:
https://www.westmarine.com/buy/racor--10-micron-spin-on-series-fuel-filter-water-separator-i-o-320r--484972?recordNum=12
I considered using the old filter setup but when I removed one of the fittings there was considerable corrosion inside, so I would prefer using something new. So you feel that Racor unit with the 10 micron element will work okay on the suction side of the pump?
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Re: Suitable Fuel Filter
You can also get a similar assembly to the one you currently have from Sierra then just use the Merc spin-on filters. Just make sure the one you get will accommodate the Merc filters mentioned above just for availability's sake. If you replace the spin-ons every year, they're a perfectly good filter for the recreational boater.
https://www.westmarine.com/buy/sierra--fuel-water-separator-kits--P006_180_003_521?recordNum=4
- bud37
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Re: Suitable Fuel Filter
dcrahn wrote:Source of the post I'm looking for a fuel filter to install between the tank and fuel pump. The pump is a Carter electric for a GM 5.7 with a 600 cfm carburetor. Most I see are 10 Micron that in my opinion are not suitable for the suction side of the pump and would cause cavitation and destroy the pump. On my race car I use a 100 Micron filter between the tank and pump, then a 10 Micron between the pump and carburetors. Are fuel filters on boats required to be USGA approved?
Like Viper said , vapour lock is a real problem in a boat, IMO a lot created by the anti syphon valve+ heat....here is a setup I used on previous boats.....metal line from tank to racor type water separator mounted on the bulkhead higher than the pump, then insulated line to fuel pump ( mechanical in these cases ) metal line from the pump to carb with a marine metal canister filter between the pump and carb. Actually what you had on the race car micron wise sounds fine to me.....(same as I used and still have boxes of earls line filters and fittings that I can't use now)...IMO ...really you have a carb, don't need 10 micron filtration ( injection yes), really just need to keep the big bits out of the pump.....the merc stuff always worked for me, the flow numbers on the separators are quite high and the idea of the spin-ons is good ( convenient) and the bonus is you are compliant with the regs.( ins and survey)
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