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Author Topic:   Replacement Fuel Tank - 1970 Nausett
SpeedBump posted 07-22-2003 02:06 PM ET (US)   Profile for SpeedBump   Send Email to SpeedBump  
I am replacing two 6.5 gal tempo fuel tanks on my 1970 Nausett. I am feeding a 1998 Nissan 70 HP. I can fit two 13 Gal plastic tempo tanks in the same space under the consol side by side.

Can I put a Y connector on the fuel line to the motor that will allow me to draw fuel from each tank concurrently thereby eliminating the need to switch fuel lines as one tank empties?

If this is possible do I install two primer bulbs, one on each leg to the tanks?

should a special size fuel line be used?

Any pro's or cons to this arrangement?

From my measurements and cable runs from the tunnel to the consol controls and steering etc. I can not fit the 28 gal tank and must go with the two 13 gal tanks.

As usual your feedback is much appreciated.

Al_A_Buy posted 07-22-2003 10:50 PM ET (US)     Profile for Al_A_Buy  Send Email to Al_A_Buy     
Speed -

1. If for any reason one tank emptied before the other, you would end up sucking air and would have no way to get the the remaining fuel out of the second tank.

2. If you do decide to go with the "Y", you should not need two primer bulbs. The bulb should be located as close to the motor as possiable so it would be well down stream of the "Y" or "T".

3. While waiting for my new in-floor tank to be built I installed a selector valve (available at West Marine) that would allow me to select between the 28 Gal Tempo up foward or the in-floor 40 Gal tank when installed. This setup ensures that if either tank is empty, I can switch to the tank with fuel.

4. As far as fuel line size, check your owners manual, but I suspect that you should use 3/8ths I.D. If you do go with the "Y" arrangement, both lines probably need to be the exact same length to ensure equal draw from both tanks (see #1)

Good Luck,


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