Classic AquaSport

Aquasport Mechanicals - things that need a wrench, screwdriver or multimeter => Fuel tanks and anything about fuel systems => Topic started by: Anonymous on October 02, 2005, 05:15:58 PM

Title: 170 fuel tank location and size?
Post by: Anonymous on October 02, 2005, 05:15:58 PM

Are the tanks on 170s below the deck and what is the standard size tank?

Thanks in advance,

MrBreeze 8)

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Post by: RickK on October 03, 2005, 05:11:37 AM

I think it depends on the year of your boat.  The tank on mine is above the deck, under the center console and holds 24gal of the stuff I can't afford anymore :roll: .

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Post by: Anonymous on October 03, 2005, 09:19:00 PM

Thanks RickK, I'd prefer that kind of set up. Still lookin' for my boat.

MrBreeze 8)

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Post by: osprey170 on October 04, 2005, 02:56:49 PM

My '85 170 has a below deck tank about 27gals.

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Post by: Mr. Osprey on October 04, 2005, 06:01:33 PM

Quote from: "osprey170"

My '85 170 has a below deck tank about 27gals.

My 1984 170 also holds 27 gallons and is an aluminum material. It too, goes through this extremely quickly.

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Post by: snapper whipper on October 11, 2005, 07:49:14 PM

my 170 osprey has a tank below the deck 27 gallons and seperate hatch to remove it (havent had to do that yet)

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Post by: jdupree on March 08, 2006, 08:29:50 PM

I have a 1988 170 osprey.  Have some gas leaking into the bilge.  Is the tank under the deck :?: Does the center console have to be removed to access it :?: Based on what I have read in this discussion I have prepared myself for the worst :( If anyone could give me some tips on the 1988 please let me know.  Thanks,

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Post by: Deck Daddy on March 09, 2006, 06:14:17 AM

1973 custom 40 gal below deck, replaced in 2000. I would have to look at an 88 to see. But on my tank the CC did not have to be removed.

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Post by: JimCt on March 09, 2006, 07:13:41 AM

jdupree,  If possible, post some pix of the console/deck area.  Since your tank is below the floor & there is no access hatch, you'll have to cut out the floor.  After you open her up it might be a good opportunity to put in a larger tank.

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Post by: JimCt on March 09, 2006, 07:51:00 AM

Deck Daddy,  What material is the new 40g tank?  Were you able to use a stock tank or was it custom fabricated?  Have recommendation for a tank supplier?

Apologize for all the ?'s...

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Post by: wisecane on March 09, 2006, 11:18:45 AM

I have an '88 200 Osprey. The gas tank is located in a coffin-like box under the deck amidships. You have to remove the console to access it. Just take the screws out of the cover over the trough that runs to the rear. Then take out the console screws. You should have plenty of slack to set the console back and remove the fuel tank box cover.

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Post by: Miguel on March 09, 2006, 05:58:32 PM

Hey there Mr Breeze....
There is a whole post about fuel tank removal on a 1985 Osprey 170 with pictures somewhere around here.....
I had to remove my tank once, but have no pics.
If your 1988 is the same as my 1985, the tank is accesible by removing the console and lifting the floor panel, which is screwed down.  My tank is an aluminum 27 gallon tank.  Space is not large enough to install a larger tank, unless you are willing to modify the factory box, and make it deeper.

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Post by: Deck Daddy on March 09, 2006, 07:22:29 PM

Jim,
It was an off the shelf aluminum tank. The guy I bought it from had just replaced it. When I pulled the hatch it said 40 gal and a part #. When I called the guy he said it was off the shelf from a shop in Miami, I was looking for a sending unit at the time. I can not remember what shop it was. It was along the Miami river from what I remember. DD

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Post by: jdupree on March 10, 2006, 09:16:40 AM

Thanks for all of the info.  Wisecane & Miguel you were right on target.  I do see where the deck will come up if you remove the console.  The boat has been sitting for awhile and when I tilted the boat up I noticed that there was a little gas in the bilge.  Don't know if it is serious enough to warrant getting into all of that work.  Do you guys think that a 1988 would need the tank replaced already :?: Thanks for the help,

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Post by: DEFIANT on March 10, 2006, 09:30:21 AM

Any gas in the bilge is a very bad thing!

On my 1983 222 the metal fuel tank is sitting in a fiberglass box under the deck. If your 17 has a similar setup the fiberglass box would hold the gas and not let it get into the bilge.

Check all of your fuel lines and the clamps on each end there is a good chance this is the source of your leak.

Good luck!

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Post by: Miguel on March 10, 2006, 10:32:59 AM

Jdupree:

check this link out..............

http://www.classicaquasport.com/gallery/showgallery.php?cat=500&ppuser=115
 This should be the same as your boat....   Gas may leak into the bilge by means of a drain in the fibergalss box.  In my case, the fuel tank was OK, but the intake elbow developed a small, almost invisible crack at the welded joint with the tank.  IMO, this is design flaw, because the deck rests on top of the elbow and excerts pressure on it.  
Take care of it soon!!!  Gas in the bilge is dangerous.....

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Post by: jdupree on March 10, 2006, 11:10:12 AM

Thanks for the info defiant.  I don't know if my setup is like yours or not.  It looks like the only access I have to the tank without pulling up the floor is a little access hole under the center console.  I haven't checked it yet but I guess the could possibly be where the hose hooks up to the tank :?

Defiant brougt up a good point.  Miguel, you have the same year as me I think.  Do you remember if the fuel tank does sit in a "holding tank" so if the gas were to leak that it would not go to the bilge :?: I am just trying to figure out how gas would get into the bilge and what fittings if any I could check.  Thanks,

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Post by: jdupree on March 10, 2006, 11:28:38 AM

Sorry Miguel.  I didn't bother to check the last post that you made before I made this last one.  It looks like you answered my question.  Thanks,

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Post by: DEFIANT on March 10, 2006, 01:57:31 PM

If you have an access plate in the deck as in the picture, open it. You should be able to see the sending unit, the filler hose, vent hose and fuel line. Inspect the seal at the sending unit and the hoses and hose clamps. You may see stains on the tank near those connections indicating a leak.

If you are lucky the problem will be there!

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Post by: osprey170 on March 13, 2006, 05:52:02 PM

Yup that's my boat in the pictures.  I had the same problem - fuel in the bildge.  I suspected the hoses because I had an oily residue on the topside of the tank and the hoses looked terrible.  I replaced the hoses, and put in a nice new deck cover that I fabricated myself.  I did this only to find out that I still have a leak  :cry:  I haven't touched the boat in about 4 months.  Your 88 should be almost identical to mine in the pictures.  The tank sits in a glassed tub in the floor - there are three or four drain holes to allow water/gas to drain into the bildge.  If these holes weren't there then the tub would eventually fill with water.  To get the tank out  you have to lift the console by removing the screws that hold it down.  Check for slack in the wiring, hoses, etc and prop it up - I had to cut a couple of wires to get it up.  You then remove the screws that hold the deck cover down - you may need to remove your seats to get access to some of the screws.  Next is the fun part and that's cutting the sealant.  Man even after 20 years of sun and salt that stuff was still hard to cut.  I used a box knife to cut the sealant and then pried it up around the edges til I got the lid off.  You'll then have to remove the hoses and somehow get the tank off the foam that it sits on.  I didn't remove my tank (I should have) so I don't know how hard it would be to get it off the foam.  If your going in there then I would HIGHLY recommend pulling the tank and doing a thorough inspection.  I'm have to go back in and I'm not looking forward to it.

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Post by: jdupree on March 14, 2006, 08:11:59 AM

Thanks for the info osprey 170.  I guess that we have the same situation facing us.  I just got finished painting the bottom of the boat.  The last thing I need is another project.  When you pull your tank let me know what you found.  If I pull mine before you do I will let you know what I found.  Who knows, we might have the same problem.  Thanks for the detailed instructions.

Title: Gas Tank
Post by: GoneFission on March 14, 2006, 09:48:03 AM

jdupree:  It's good to hear from another AS owner in NC!  

I just reworked the decking over the gas tank on my 222CCP, and took some pictures that may help.  You can remove the screws and lift the console up without disconnecting the wires, cables, and hoses.  This will allow you to remove the seats and the screws that hold the center panel in place.  Use 2x4s or whatever to hold the console up and you can remove the center panel.  Yes, cutting through the caulk is a bit of a pain; I used a utility knife.  

Here are two pictures of the tank area with the console blocked up:
http://www.classicaquasport.com/gallery ... 500/page/1 (http://www.classicaquasport.com/gallery/showphoto.php/photo/1426/sort/1/cat/500/page/1)

http://www.classicaquasport.com/gallery ... 500/page/1 (http://www.classicaquasport.com/gallery/showphoto.php/photo/1441/sort/1/cat/500/page/1)

Yours will look a bit different, but the concept is the same.  I have a couple other photos in the gallery that may help as well.  Make sure you take a good look at the underside of the center panel when you take it out.  If the panel is pushing on the tank connection, it means the panel has bowed down.  Odds are that the backing on the center panel has deteriorated and you really need to take the plywood off the back and redo the panel.

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Post by: jdupree on March 14, 2006, 10:44:46 AM

Thanks for the info Cap'n John.  It is good to hear from another AS owner in NC.  I have seen very few if any AS's in NC.  Don't really know why but I hardly ever see one and I fish alot around Morehead City, NC.  As a matter of fact, I just bought my 170 last month.  Hasn't even been on her maiden voyage yet.  Wanted to get the tank squared away first.  I haven't even checked any of the fittings yet to see if I could have a simple leak.  I guess I would be very lucky if it were that easy.

By the way, love your boat and the way the center console is laid out.  Thanks again for the help,

Title: 88 gas tank question
Post by: gchop on March 14, 2006, 09:11:23 PM

mine is an 87, look at my pics in the photo gallery. the tank you will see is an exact match of the original tank, cost $200.00 cash from local tank maker. Yes the tank you have can definetly be shot.

remember if there is gas in your bildge there is probably water in your tank!  This makes motor go BOOOM !!!!!  trust me I know

George