Transition to fuel pump

[mgsolakis]

I’m thinking of changing my Evinrude 35 hp to a fuel pump. Other than getting the pump and hoses is their anything you have to change or add?

[david-bartlett]

New tank. Whatever else will be decided by what pump you choose and where you locate it.

[frankr]

A 35hp is already set up to accept a fuel pump. Save yourself a lot of work by using a pump that fits it. A Sierra 18-7351 would be such a pump. Because the fittings point downward, move the bypass cover to the top cylinder. You won’t need the glass filter that is there now because the pump has a filter screen.

You will have to drill the pulse hole on through the bypass cover and tap the screw holes to 10-24 threads.

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[chris-p]

Along with what is stated above, you will need a new fuel fitting as well.

[lindy46]

. . . And plug the old "air" line nipple from the 2-line hose.

[mgsolakis]

Bugger, I did not realize you could drill through there. I got an evinrude pump #0438555. Should I change this? Or could I still use it, tap the screw holes and get the pulse from the hose on the bottom.

[chris-p]

That’s an option if the hose will fit.

[cajuncook1]

quote mgsolakis:

Bugger, I did not realize you could drill through there. I got an evinrude pump #0438555. Should I change this? Or could I still use it, tap the screw holes and get the pulse from the hose on the bottom.

Please drill and tap the covers off the motor. You will need to replace the valve cover gaskets or make new ones your self.

[frankr]

quote mgsolakis:

Bugger, I did not realize you could drill through there. I got an evinrude pump #0438555. Should I change this? Or could I still use it, tap the screw holes and get the pulse from the hose on the bottom.

The pulse hose on a 438555 is a separate fitting on the bottom. Yes you could drill one of the bypass covers for a hose fitting to supply the pulse to the pump. You might be able to mount the pump to the other bypass cover and drive it with a pulse hose. All I can say is look it over and see if it is doable. I haven’t tried it.

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