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Parker fuel tank replacement rebuild

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Parker fuel tank replacement rebuild

Old 10-13-2020, 04:20 PM
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Default Parker fuel tank replacement rebuild

So story behind my commercial 23 Parker is 2 years ago my fuel tank went out mid season leaking fuel everywhere. At the time I did not have time to replace so we cut a forward hatch, had a fuel tank made and dropped in a new one and dried the old one out and ran fans to dry as much as possible. Went well for 2 years, then my new fuel tank sprung a leak through a hairline fracture at a baffle seam.. don’t know cause yet. Ripped both tanks out, also finding some Delamination where my tower feet sit. Rebuilding new and stronger. Got a new tank built out of 3/16ths to original specs but shortened to around 70 gallons. Could not find many full threads about this so posting my experiences. Enjoy
Old 10-13-2020, 04:24 PM
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Original fuel tank


Wet foam from original cell being sealed and not able to breathe

New tank up front



Delamination from feet and checked foam for saturation
Old 10-13-2020, 04:31 PM
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Turning new fuel cell into a hatch drainable to the bilge



Trying to avoid hinges and latches for a true flush mount with no obstacles



Would have been easier to just get a flat bottom fuel tank made.. live and learn


2 part epoxy coated


Installed a new bulkhead and putting a drain plug in it to drain any water that intrudes into the cell but keeps fuel in the cell if it ever leaks until I pull the plug via a hatch
Old 10-13-2020, 04:33 PM
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Proper equipment is handy

Drain plug

Wedged but able to breathe


Almost there should finish tomorrow
Old 10-13-2020, 05:22 PM
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Impressive work!
Old 10-13-2020, 08:28 PM
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No 6lb foam between the tank and bottom?
Old 10-14-2020, 05:35 AM
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Originally Posted by pierdude View Post
No 6lb foam between the tank and bottom?


I had 1/2” neoprene rubber thinking it would compress which it did not, making the tank sit too tall so I had to take it out. Bedded it in 4200 on every contact point so no water can sit under it. The fuel deck has drain holes and slots on the edges so any water can run below it. Making the deck hatches flat screw down plates for a more sealed fit than screw in junk as well
Old 10-14-2020, 05:57 AM
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Nice work, you thought of a lot of things in the process. I have replaced tanks in a couple of my boats as well. Couple questions. Is that water or gas underneath the old tank? Also, why not spray foam all around the gaps on the sides of the tank? More breathable space?
Old 10-14-2020, 06:51 AM
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Originally Posted by Turtlebull View Post
Nice work, you thought of a lot of things in the process. I have replaced tanks in a couple of my boats as well. Couple questions. Is that water or gas underneath the old tank? Also, why not spray foam all around the gaps on the sides of the tank? More breathable space?
It is mostly water, the gas ate the foam up and mostly evaporated. I believe foaming around the tanks is old-school and simple but not permanent. That wet foam against aluminum will create corrosion. Also pulling wet foam out gets rid of a ton of extra weight. The foam in the “closed cell” Compartment that I took out for the forward tank was soaking wet. Luckily that is the only foam in the boat that I have found
Old 10-14-2020, 06:55 AM
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Also The cause of all this major repair was due to a bad fuel sending unit gasket on the original tank which caused the bolt holes to corrode in Spill fuel out. When you have two tanks go bad below deck and you don’t blow up you do research and figure out how to not have that happen again. Also a rookie Welding mistake on the new tank they put the fill the vent andthe pick up all in the aft part of the tank which did not allow me to fill the tank up due to pushing the fuel uphill.
Old 10-14-2020, 07:12 AM
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Very impressive. sub'd to see the finish work.
Old 10-14-2020, 07:56 AM
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Impressive and I like the box in the floor forward of the tank. I wish Parker would have done that from factory. I have a 2004 21SE, what year is yours?
Old 10-14-2020, 10:45 AM
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Originally Posted by boost View Post
impressive and i like the box in the floor forward of the tank. I wish parker would have done that from factory. I have a 2004 21se, what year is yours?
2000
Old 10-14-2020, 05:17 PM
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Today’s work
Old 10-15-2020, 06:56 PM
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Old 10-20-2020, 07:33 PM
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Old 10-21-2020, 04:32 PM
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