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Old 07-27-2020, 07:40 PM   #1
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Replacing the Fuel Tank

Has anybody replaced their tank with a new one? I know mine has been sitting for more than a decade filled with ethanol laced fuel. The fuel in the line was deep red (and the line from the tank is completely blocked). I'm assuming the inside of my tank is mostly rust. It seems odd that they built these bodies out of aluminum, then used steel for the tank.

I think I'll need to drop the tank, regardless, so thinking about just replacing it with a new aluminum tank.

Whad'yathink?
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Old 07-27-2020, 07:53 PM   #2
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Bella has a new, custom built, approx ten gallon larger tank.

Make sure they install baffles, but also you should take the opportunity to fit a new sender/pick-up as later models had a slightly different mounting diameter and there is no mount having something built to only take an obsolete original part.
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Old 07-28-2020, 03:45 PM   #3
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Originally Posted by martin300662 View Post
Make sure they install baffles, but also you should take the opportunity to fit a new sender/pick-up as later models had a slightly different mounting diameter and there is no mount having something built to only take an obsolete original part.
Cool. Thanks for the info.! I also plan on adding an in-tank fuel pump.
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Old 07-28-2020, 03:56 PM   #4
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Cool. Thanks for the info.! I also plan on adding an in-tank fuel pump.
Why? Are you fitting EFI? External pump is much easier to change if it fails and if keeping the carb, has plenty of pressure.

I am a firm believer in 'keep it simple, stupid' (KISS) so why add complication with no added value?
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Old 07-28-2020, 04:00 PM   #5
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Why? Are you fitting EFI? External pump is much easier to change if it fails and if keeping the carb, has plenty of pressure.

I am a firm believer in 'keep it simple, stupid' (KISS) so why add complication with no added value?
EFI may happen at some point in the future.

If the tank is already down, there's no reason (other than a couple bucks) not to install the pump. As long as you install a unit that allows free flow in case of failure, it shouldn't have any negative potential.

I've got the Carter installed now, and it works great, but I still plan on installing an in-tank anyway.
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Old 07-28-2020, 04:36 PM   #6
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Like Martin I opted to not go with an intank fuel pump when I converted over to TBI on my Argosy. My reasoning was the thought of having to drop the fuel tank on the side of the road to replace the pump didn't seem like a fun ordeal. I've had my share of roadside repairs and my preference is to keep them to a minimum

Instead I went with the Carter P4070 as a low pressure suction pump that feeds a 1/2 gallon surge tank. I have a high pressure frame rail mounted pump that sucks from the bottom of the surge tank and feeds the throttle body.

I figured the lesser of two evils was carrying about $125 in spare fuel pumps that I can replace anywhere. I got the idea for the surge tank from Peter's old 310. His coach had an aftermarket efi and used a surge tank as well.

Brad
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Old 07-28-2020, 06:07 PM   #7
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Like Martin I opted to not go with an intank fuel pump when I converted over to TBI on my Argosy. My reasoning was the thought of having to drop the fuel tank on the side of the road to replace the pump didn't seem like a fun ordeal. I've had my share of roadside repairs and my preference is to keep them to a minimum

Instead I went with the Carter P4070 as a low pressure suction pump that feeds a 1/2 gallon surge tank. I have a high pressure frame rail mounted pump that sucks from the bottom of the surge tank and feeds the throttle body.

I figured the lesser of two evils was carrying about $125 in spare fuel pumps that I can replace anywhere. I got the idea for the surge tank from Peter's old 310. His coach had an aftermarket efi and used a surge tank as well.
Yeah. I guess my thought is: the in-tank is the "best" place for a fuel pump (according to... everyone), and then if that in-tank unit ever fails, I will go back to the Carter P4070 already installed in the line (which also has a 100% flow through rate even when not powered). Most decent in-tank fuel pumps have 100% flow if they stop pumping, so it's not detrimental to just leave a non-functioning pump where it is. Am I wrong on this?
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Old 07-31-2020, 08:43 PM   #8
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Yeah. I guess my thought is: the in-tank is the "best" place for a fuel pump (according to... everyone), and then if that in-tank unit ever fails, I will go back to the Carter P4070 already installed in the line (which also has a 100% flow through rate even when not powered). Most decent in-tank fuel pumps have 100% flow if they stop pumping, so it's not detrimental to just leave a non-functioning pump where it is. Am I wrong on this?

Only draw back I can think off is a clogged up filter at the bottom of the old pump. Moving to an external Carter also includes external accessible fuel filters.
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