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Do blackjack boats use aluminum fuel tanks or poly?
Posted on 9/19/25 at 12:17 am
Posted on 9/19/25 at 12:17 am
I'm looking at a 2007 blackjack 224 with a 2019 Suzuki 200 for 29k. Seems like a good deal, but don't aluminum fuel tanks need to be replaced at some point? Just trying to factor that in.
3
Posted on 9/19/25 at 6:31 am to el duderino III
They all need could need to be replaced depending on use and build. Best buddy worked for yellowfin for 20 years, he now works in a shop and fuel tank replacements are a lot of the work they get. So much so I had no idea. Sometimes they don't foam right around the tanks, corrosion, water issues, it really happens a lot. He lives in S FL, so boats might get more use or beating from the gulf compared to other locations.
Posted on 9/19/25 at 6:40 am to el duderino III
I have a 40 year old McKee Craft with the original aluminum tanks.
I have a 42 year old Peterbilt with the original aluminum tanks.
I have a 20 year old Pursuit with the original aluminum tank.
There is always a chance that if a weld fatigues or of galvanic corrosion because someone didn’t maintain their anodes but I would much rather a (IMO) an aluminum tank(s) that could be repaired if need be vs. some impossibly shaped rotomolded poly tank that can fatigue and fail probably just as easy as a welded tank.
I have a 42 year old Peterbilt with the original aluminum tanks.
I have a 20 year old Pursuit with the original aluminum tank.
There is always a chance that if a weld fatigues or of galvanic corrosion because someone didn’t maintain their anodes but I would much rather a (IMO) an aluminum tank(s) that could be repaired if need be vs. some impossibly shaped rotomolded poly tank that can fatigue and fail probably just as easy as a welded tank.
Posted on 9/19/25 at 7:55 am to way_south
quote:with regard to yellowfin that was a well known and well documented case of factory defects
Best buddy worked for yellowfin for 20 years, he now works in a shop and fuel tank replacements are a lot of the work they get.
Posted on 9/19/25 at 8:38 am to el duderino III
My 2005 Blackjack 224 has a poly tank.
Posted on 9/19/25 at 5:43 pm to Ron Popeil
My 2013 has a poly tank
Posted on 9/19/25 at 9:01 pm to way_south
The foam is what actually causes the tanks to corrode. Bare aluminum tanks mechanically fastened with some air space to oxidize normally outlast the boat.
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