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1994 KW 1720 Sportsman Fuel Tank Replacing

Questions and Improvements on Key West Boats Hulls, Parts, Hardware and Structural Components

Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by handi2 » Thu Apr 19, 2012 12:26 pm

Tom,

Thank you for the information on how to cut out the floor..!! I was stressed out about cutting the floor until I called you. I had no idea the tank could be changed without cutting any further into the floor than under the tiny console.

The stress cracks were ground out and filled with thickened epoxy, primed and sprayed with gel coat to "almost" match.

You mentioned Woody Wax on the non skid. I have yet to do that but I heard it works really well.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by Metrolobster » Thu May 17, 2012 11:32 am

Handi did you ever get an answer to "What is the grey rigging tube running amidship to the port side?"
I just bought the same boat and I'm repairing the gas gauge/sending unit. I want to put a trolling motor up front and I was very curious to see where that plumbs out to. There lots of work ahead for me but the hull, motor, and the important parts of the boat are solid. I was very impressed by the longevity of these hulls. (Your son’s boat looks beautiful.)Besides I like to tinker and I’m not scared to take on a big project.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by handi2 » Sun May 20, 2012 7:37 pm

No I never found out what that grey plastic pipe was for. There was nothing in it.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by Tom Marlowe » Sun May 20, 2012 8:46 pm

Not sure but it was likely one of the 'just in case' conduits that are run through most of the boats.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by handi2 » Fri Jun 15, 2012 7:30 pm

Better to have one "just in case" for sure...

Now the 2001 F80 Yamaha has a rod knocking..!! When I bought the used boat it had a large vinyl decal "Lucky Boy" on both sides. Not so lucky..!!
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by Tom Marlowe » Fri Jun 15, 2012 9:54 pm

A knocking rod?! Not so lucky indeed. This is the first case of a loose rod on one of those engines I've heard of.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by handi2 » Thu Jun 28, 2012 6:47 pm

Me too Tom, and many of the other Yamaha mechanics in our area. I ordered a 2012 "Lightweight" F70 Yamaha and it should be ready Monday, 7/02/12.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by Stroken » Wed Jul 04, 2012 8:39 pm

Sorry to hear about your motor, that tank replacement looks great, Do you know the demetions of the tank you put in, I went to moeller's site and couldnt find the same one that had the fuel fills in the middle like yours did in the 31 gallons..
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by handi2 » Fri Jul 06, 2012 11:59 am

I got the dimensions from Tom Marlowe here on the forum. If I had to do it again I would get a smaller tank b/c the one recommended cost $450.00 plus shipping. It does go in nicely and it's the same tank Key West uses for their replacement.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by huntsman45 » Tue Jul 10, 2012 10:15 pm

I hope it a while before I have to replace mine. I checked it recently and found it was aluminum and not plastic.


Tom, If you could post the make and model number it would be appreciated.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by handi2 » Thu Jul 12, 2012 11:05 am

I will look it up today and post the information on the tank. I am rebuilding a 1976 Aquasport 170 so I'm real busy.

The tank was purchased from Key West thru my local Key West dealer. The cost with shipping was around $450.00. Thats why I posted earlier to try to find a smaller tank that would fit for less cost. If there is such a thing..!
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by MarshMarlowe » Thu Jul 12, 2012 11:35 am

handi2 wrote:I will look it up today and post the information on the tank. I am rebuilding a 1976 Aquasport 170 so I'm real busy.

The tank was purchased from Key West thru my local Key West dealer. The cost with shipping was around $450.00. Thats why I posted earlier to try to find a smaller tank that would fit for less cost. If there is such a thing..!



have you posted over on classicaquasport.com?
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by Tom Marlowe » Thu Jul 12, 2012 5:48 pm

The tank is a Moeller FT3130 BR. This is one of the new low permeation tanks required by EPA standards today. I think that's what the BR on the end stands for. The FT3130 has been around for a long time and it's the standard poly tank. On occasion we've installed the FT1908 which is a 19 gallon tank in the 1720. For those who don't need the extra capacity it may be a good alternative.
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by huntsman45 » Thu Jul 12, 2012 10:03 pm

Thanks Tom! I hope I don't need it anytime soon!
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Re: 1994 KW 1720 Sportsman Fuel Tank Replacing

PostPosted by DocShock » Thu Aug 02, 2012 12:51 pm

Think you could give a step by step account? At lease to the part where you start putting everything in...
Looks like you ran the new vent and fill line before you dropped the tank in?
When you put the tabs on to support the floor piece you removed did you grind or sand the under side of the floor first? What did you use to attach the tabs?
When you glassed the floor piece back in, what was the glass you went with (biax, etc) and did you go with epoxy/resin or what?
DId you repaint under the console as well after everything cured?

Thanks,
I may be getting ready to take on a similar task, at least in replacing the fuel fill and vent hoses...My tank is not leaking just think its the fill hose that has a hole.
Did your aluminum tank have baffles in it?

Any other tips or problems you ran into and could steer me to avoiding?

Brett
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