DeFever 40 Passagemaker diesel fuel tanks

[fdw]

A couple of quick questions re this Jensen Marine build (1973 - 1976):

1. What material was used for tanks?
2. Is there a "questimate" of longevity before replacement is needed?

Thanks.

 

[Jim Mason]

here are some pictures of my old and new tanks. Jim

 

[Jim Mason]

The old tanks were replaced when new motors were installed.
Original tanks were 33 years old. Thought I'd replace them while
I was at it.

Jim

 

[fdw]

Fuel Tank Baffles

Jim: Do you recall the arrangement of the baffles in your old diesel tanks? Thanks.

 

[Jim Mason]

Here are some pictures of the old tanks.
pix 3 shows the inside of the top section where the fuel gauge is located.
pix 5 shows the top section where the fill hose is located.
pix 6 shows a cross section of the tank. left vertical is the top. right vertical is the bottom. piece on the ground is against the hull.
pix 7 shows the new tanks.

 

[PM]

Those tanks are cold rolled steel. They usually last between 39 and 40 years, then fail either on the tops or bottoms.

pete

 

[fdw]

Fuel Tank Baffles

Thanks for the pictures, Jim. Dave

 

[fdw]

Fuel Tank Baffles

Pete: Thanks for the longevity estimate. Dave