Just wondering if this method would help or hurt. Got a fresh rebuilt carb that is running like a dream, I don't want any stuff getting into it, yet! Thanks.
Dual inline fuel filters, advantages/disadvantages (1 Viewer)
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ntsqd
technerd
How many filters does an FJ60 have stock?
Carbs are somewhat tolerant of dirty fuel, EFI is not.
Carbs are somewhat tolerant of dirty fuel, EFI is not.
not worth it on carb setup to me... certainly worth doing on fuel injection.
I run a prmary GM SUV/Pickup fuel filter 99...and then a russell in line filter between the tank and the fuel pump. russell filter is not restrictive.
I run a prmary GM SUV/Pickup fuel filter 99...and then a russell in line filter between the tank and the fuel pump. russell filter is not restrictive.
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Im running 2 stock filters for about 3-4 months.
No issues, and no junk in the carb since. Fingers crossed.
I was really pissed after putting on my new trollhole carb and getting crap in it within a week.
No issues, and no junk in the carb since. Fingers crossed.
I was really pissed after putting on my new trollhole carb and getting crap in it within a week.
ntsqd
technerd
The issue with multiple filters and only the stock mechanical pump can be enough restriction on the suction side to create an easy to vapor lock fuel system. This assumes that you don't put all of the filters on the discharge side of the pump. If they are all on the discharge side then you're not protecting the pump, only the carb.
My 60, and therefore I assume all 60's, do not have a filter sock on the end of the fuel pick-up inside the fuel tank. (62's are a different kritter and though I can make some guesses I've no idea what they do or don't have.) The 60's do have a cool little piece of metal in the stock tank that helps keep junk from being drawn into the fuel system, but it's not absolute.
Armed with this info, now what? Any filter on the suction side of the pump further depresses the pressure in that part of the system making it easier to boil the fuel and cause a vapor lock. The best way to combat vapor lock is to put all of the fuel supply under positive pressure as the EFI systems do, but that complicates the system because now we're talking about a fuel pump at or in the tank with a straining sock before the pump and a filter after it.
Welcome to my "Analysis Paralysis."
My 60, and therefore I assume all 60's, do not have a filter sock on the end of the fuel pick-up inside the fuel tank. (62's are a different kritter and though I can make some guesses I've no idea what they do or don't have.) The 60's do have a cool little piece of metal in the stock tank that helps keep junk from being drawn into the fuel system, but it's not absolute.
Armed with this info, now what? Any filter on the suction side of the pump further depresses the pressure in that part of the system making it easier to boil the fuel and cause a vapor lock. The best way to combat vapor lock is to put all of the fuel supply under positive pressure as the EFI systems do, but that complicates the system because now we're talking about a fuel pump at or in the tank with a straining sock before the pump and a filter after it.
Welcome to my "Analysis Paralysis."
The issue with multiple filters and only the stock mechanical pump can be enough restriction on the suction side to create an easy to vapor lock fuel system. This assumes that you don't put all of the filters on the discharge side of the pump. If they are all on the discharge side then you're not protecting the pump, only the carb.
My 60, and therefore I assume all 60's, do not have a filter sock on the end of the fuel pick-up inside the fuel tank. (62's are a different kritter and though I can make some guesses I've no idea what they do or don't have.) The 60's do have a cool little piece of metal in the stock tank that helps keep junk from being drawn into the fuel system, but it's not absolute.
Armed with this info, now what? Any filter on the suction side of the pump further depresses the pressure in that part of the system making it easier to boil the fuel and cause a vapor lock. The best way to combat vapor lock is to put all of the fuel supply under positive pressure as the EFI systems do, but that complicates the system because now we're talking about a fuel pump at or in the tank with a straining sock before the pump and a filter after it.
Welcome to my "Analysis Paralysis."
Would one on both sides of the pump be better? Thanks for the detailed Analysis.
Dave
