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Old 06-14-2018, 09:02 PM
tac tac is offline
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Fuel Pump Relocation

An option might be to leave the old electric pump where it is, and mount the new pump in a more accessible location. Never having seen the inside of any Catalina, I can modestly say I’m quite unbiased.

If you do that, or ANYTHING to the fuel system, read and follow the Coast Guard requirements of The Boatbuilder’s Handbook, found here, http://www.moyermarineforum.com/foru...ead.php?t=9280. These requirements are not just Nice to Do, they are law.

In that book, Subpart J, Fuel Systems, Title 33 CFR Section 183.566 Fuel Pumps: Placement, requires that, “Each fuel pump must be on the engine it serves or within 12 inches of the engine, unless it is a fuel pump used to transfer fuel between tanks.” This 12” requirement is for the pump. Thus, the pump, if mounted within 12” of the engine, may have any length of hose from the pump to the carburetor.

Steps to do this might be:
a. Cut the fuel line from the fuel filter to the pump suction end at the pump. Remove that hose from the discharge end of the filter. Throw it away, don’t be tempted to reuse it.
b. Cut the fuel line from the old electric pump discharge to the carburetor, and remove it from the carburetor. Throw it away.
c. Mount the new pump within 12” of the engine in an accessible location.
d. Run new USCG compliant Type 1 ethanol rated fuel hose from the filter discharge port to the new pump suction inlet. Follow all the USCG rules on routing, support, fittings, clamps, etc.
e. While you’re at it, if you don’t have a “polishing” filter and fuel pressure gauge, add them now. Using the search function of this forum will provide lots of examples. Connect them after the new pump’s discharge - filter first, then gauge. Again, follow the CG rules for mounting and support, using new A1 hose.
f. Connect the fuel pressure gauge to the carburetor using A1 ethanol rated hose.
g. Finally, connect the new pump up electrically.
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