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Thread: Adding third tank
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05-25-2015, 02:44 PM #1
Adding third tank
Own a 21 cougar that has two saddle tanks now, problem is I'm always out of gas, I wish to install a third tank in rear between stringers, how do you get them to all drain simultaneously? Seems keeping fuel lines same length could be it?
1986 cougar mtr 21
2003 supra launch ssv
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05-25-2015, 05:00 PM #2
how big tanks now ?
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05-25-2015, 05:12 PM #3
I would have the two side tanks flow into the new tank. Draw your fuel from the new one.
Regards,
Charlie North
If it ain't broke, modify it.
80 21' Superboat with Yamaha 225 Excel power
76 Glastron to be powered by a 6.2 L92 with surface drive
87 Glastron CVX20 Hull
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05-25-2015, 05:29 PM #4
Two 12 gallon tanks not enough the idea of running both tanks int new one may work thanks
1986 cougar mtr 21
2003 supra launch ssv
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05-25-2015, 09:18 PM #5
12 is small the 23 Daytona has 30 gal per side
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05-26-2015, 01:04 AM #65000 RPM
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my 19 daytona has two 12's....running a bridgeport bye bye in an hour....ouch..LOL
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05-26-2015, 06:33 AM #7
Same here and we're running pre mix with aces
1986 cougar mtr 21
2003 supra launch ssv
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05-26-2015, 06:41 AM #8Member
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My CeeBee Avanger has 2 x 20 gal saddle tanks with equal length lines "Y'd" together, and they draw pretty evenly. But with a middle tank at a different height you may have to have the 2 saddle tanks drain into the middle tank, and then to the engine. If they all draw at the same height, it may be OK.