Evinrude 6hp converted to Briggs power head gas cap question

[bikerider]

I have an Evinrude outboard converted to a Briggs and Stratton 6.5hp power head. The gas cap on the briggs is vented so every time I fill the tank with fuel I cannot tilt the motor up without gas spilling out of the cap. Short of using an in-boat tank setup, what are my options? Can I use a non vented gas cap exclusively or do I need some other type of vent for it along with a non vented cap? I briefly had a Honda 2hp 4 cycle outboard with a built in fuel tank like the briggs and am wondering how Honda got around the issue of fuel spillage. Thanks.

 

[Scott Danforth]

you need a vented cap

 

[merkdawg0084]

that's pretty awesome....

 

[F_R]

I like the throttle setup. Simple and effective.

 

[bikerider]

you need a vented cap

How can I keep the fuel from spilling when I tip the engine?

 

[bikerider]

that's pretty awesome....

Thank you. It's been a really fun project.

 

[bikerider]

I like the throttle setup. Simple and effective.

Thanks. It is an old worn out throttle cable from a bigger boat. I had a feeling I should hang on to it, and lucky I did, it came in handy.

 

[merkdawg0084]

How in the heck did you do that? Did the driveshaft fit from the evinrude? Guess it doesn’t pump water since it’s air cooled Briggs.?

 

[bikerider]

How in the heck did you do that? Did the driveshaft fit from the evinrude? Guess it doesn’t pump water since it’s air cooled Briggs.?

I fit the briggs to the evinrude with a lovejoy style coupler that fit each shaft. I had to remove the impeller from the water pump in the lower end so it would not shoot water up and spray me and the boat.

 

[Scott Danforth]

How can I keep the fuel from spilling when I tip the engine?

maybe put a snorkel on the vent. however if you ran without a vented cap, the fuel pump wouldnt be able to draw fuel and the motor wouldnt run.

 

[merkdawg0084]

If you can make that Briggs work, you shouldn’t have any trouble coming up with a fix for the gas cap...

 

[bikerider]

maybe put a snorkel on the vent. however if you ran without a vented cap, the fuel pump wouldnt be able to draw fuel and the motor wouldnt run.

The Briggs engine does not have a fuel pump. It is gravity fed from the tank directly to the carb.

 

[F_R]

Put a fuel pump on it and use a remote tank. Problem solved. Hey, you are going to carry a spare can of gas anyway, right?

 

[bikerider]

Put a fuel pump on it and use a remote tank. Problem solved. Hey, you are going to carry a spare can of gas anyway, right?

Yes, probably. I have only test run the boat with this motor on for about 15 minutes a couple times. I don't know how fuel efficient it will be running it all day on the lake.