fuel capacity on 18?

[Tom Bare]

I think I read here somewhere that the fuel tank on the old 18's was in the neighborhood of 36 gallons.

ALthough I have not checked it in years I had always thought I had 48 gallons. I have bought a Navman fuel gauge and would like to know how many galloons I really have at full.

Was there an option for a larger tank on the 18's? It's a 79 model.

Thanks,
Tom Bare

[bmaj319]

I couldn't find a label on my tank, so I calculated the cubic inches, and used a formula I found on the internet to determine gallons. The tank in my 18 worked out to just about 50 gallons.

[Trayder]

In 1978 the 18 came with a 30 gal useable alum tank, I have not found any options for a larger tank, Considering all I found was useable gallons I do not know the true capacity of the tank. [img]images/icons/confused.gif[/img]

[Mark]

I had a 1977 18' and the "useable" gallons amounted to about 27! Needless to say, that was removed and a new 50 gallon tank was installed.

I'm not sure how far they expected those inefficient 70's engines to go on 27 gallons, but I would have run out of gas on a daily basis. When I bought the boat it had a 140 V4 Evinrude on it (1986 model) and I would routinely burn through 25-30 gallons a day chasing albies off Cape Lookout in North Carolina.

[Tom Bare]

BMAJ-

Do/did have your tank out of the boat? What are the dimensions?

Thanks everyone!

Tom.

[Scott]

Tom...If you can measure the tank plug the numbers into this for a real close estimate of gallons

Length(in) x Width(in) x Height(in) /231