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Conference unifix::sailing

Title:SAILING
Notice:Please read Note 2.* before participating in this conference
Moderator:UNIFIX::BERENS
Created:Wed Jul 01 1992
Last Modified:Mon Jun 02 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2299
Total number of notes:20724

998.0. "Fuel Tank Repair?" by RAIN::WHITCOMB () Fri Sep 30 1988 00:58

    	Well, we are finally taking the plunge by buying an oldie
    but goodie Contest31, built in '73.  She has held her age well
    but she has a few defects which will need repairing before 
    next season.  One of these defects is a "weep" on the seam of 
    her stainless steel diesel fuel tank. My questions are as
    follows:
    
    
    		* Is there a liquid lining material that I can use
    to seal up the holes similar to that used by old car restorers
    on their very vintage gasoline tanks?  
    
    		* Have any of you used this stuff to repair diesel
    tanks?
 
 		* If I descide to replace the tank, what material
    should I have it fabricated of?
    
    		* Can you recommend a shop (western mass/central
    conn) where I can get this tank repaired or a new one can
    be made?
    
  		* Is there a source of ready made tanks out there?
    
    	There are probably alot more questions that I haven't 
    thought of yet but the answers to these will help alot.
    
    Thank you all, John
  
    

T.RTitleUserPersonal
Name
DateLines
998.1MSCSSE::BERENSAlan BerensFri Sep 30 1988 14:2219
Personally, I'd replace the tank. Leaking fuel has only one place to go 
-- the bilge. 

Diesel tanks can be made of monel (the cost is prohibitive), stainless
steel, aluminum, and black iron (I think, and whatever that is).
Repairing (rewelding) your current tank might be possible, but finding
someone willing to do it might be difficult. After all, at welding
temperatures any diesel vapors or sludge in the tank will burn merrily.
I doubt you'll find a stock tank due to the funny shapes boats have. 

I'd use aluminum (that's what our tank is made of) as the material is
inexpensive and any competent welder could weld it together. See the 
Yellow Pages under Sheet Metal and/or Welding. If you get ambitious, you
could buy sheet aluminum, cut out all the pieces with a sabre saw, and
then have someone weld it together. Heck, sign up for an adult education
welding course at your local vocational school and make the tank
yourself. You'll even learn a new trade in case computers are a passing
fad. 

998.2Try Defender Ind.EMASA2::HOFri Oct 07 1988 10:4312
    The Defender catalog lists off-the-shelf fuel tanks in a variety
    of shapes.  The available materials are aluminized steel and all
    aluminum.  Costs run from about $100 - $200.
    
    I've known welders who have repaired automobile gas tanks so doing
    the same for a boat fuel tank shouldn't be any more difficult. 
    The trick is to fill the tank with an inert substance.  I've forgotten
    what they use but something like calcium salts of some sort come
    to mind.
    
    - gene ho

998.3IT'S FIXED...I HOPE!RAIN::WHITCOMBWed Dec 14 1988 19:579
    I am happy to report that my tank has been repaired for the princely
    sum of $10.00 at a radiator repair shop. They had the facilities
    to boil it out over a weekend, resolder the hair line crack on one
    of the seams, and pressure test it.  However, since I can't believe
    I got away so cheaply, I will make sure when I reinstall it that
    I will be able to remove it with more ease then previously. 
    Thanks for your help,
    				John W.