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Old 05-18-2018, 01:09 PM   #9
Speedbumpauto
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Join Date: Aug 2011
Location: Tucson, AZ
Posts: 917
Re: In-tank or external fuel pump

What Joedoh said+! I've replaced the ext. pump in my 27 T already once at 20K miles AND it's a cell with a bottom fuel outlet so no siphon problems. I've replaced the ext. pump in my Samurai EFI conversion twice in 30K miles but continue to use it BECAUSE the design is such that a conversion would be horrible. I have a Corvette LS with the pump in the tank approaching 100K miles. Guess how many times that pump has been changed. So, yea, ext. is easier to change but, personally, I would sooner just not change them. When I did the 55, I knew the tank was leaving the cab. I also knew I would use an electric pump(kinda like the guy who asked the question) so the slight extra cost was nothing. Most all early EFI's from the factory were external. Now they're ALL internal. What does that tell you? Maybe my times around the block are different than your times around the block.
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