All about fuel tanks!

[herm]

might be a good idea to revive this thread from TOB. seems like folks are always asking. maybe sticky it to the top in tech or FAQ??

i will do a little cut and paste to get started

General rule of thumb for all "steel" tanks goes like this.

They're backwards compatible. If you've got an older bike and are trying to fit a newer tank it will fit, but might need a few mods or a change(s). Unfortunately putting older tanks on newer bikes will take more work than most will want to do/bother with for either PITA factor or $$$.

Specific differences are below

from 1993 - 1999 All the carbed tanks fit the same (but the cutouts for the seat are different from the newer 2000+ designs) and they only have 1 fuel line coming out which uses either 5/8" or 8mm fuel line. All steel tanks have 2 drain lines which are 1/4" or 6.35mm sized lines. All carbed models have their fuel filters/pumps outside the tank. You can use a newer tank, but you'll have to also use a newer seat to fit the cut out of the tank (it's only a little off and if you're not a perfectionist, it's livable)

In 2000 & 2001 Ducati made both carbed and FI tanks. The most obvious difference between them is that the fuel filler on top either has just a fuel cap (for carbed models) or a fuel cap which is just inside an aluminum ring (for the FI models).

(FI) All FI tanks have their fuel filters and fuel pumps inside the tanks. And you would remove both the fuel cap and the aluminum ring which the fuel cap mounts to from the tank (gently using the wooden handle of a hammer) to gain access to both the fuel filter and pump. It helps if you've got small arms to fit inside that hole. On the bottom of these tanks there are 4 lines coming out. All 4 of which are bent at 90 degrees. 2 are large for fuel (5/16" or 8mm) and 2 are small (1/4" or 6.35mm). The cut out underneath for the airbox and battery are different than the newer design and will NOT fit newer tanks without a lot of relocating of parts or modifying.

(carbed) These are the rarest tanks as they are for carbed bikes and have the newer seat cutout (which fits everything from 2000 to current in the Monster line), but are have the smaller hole at the top of the tank for only a gas cap and NOT the extra aluminum ring. But it's fairly easy to make any FI tank fit this bike with a little work. Closing off one of the fuel lines and adding the extra aluminum ring (which didn't come with the original carbed tank) and has 8 2mm allen bolts holding it into the tank.

All tanks from this point forward are FI only.

The 2001 S4 tank is special as it has the underside shape of the newer 2002+ style tanks, but it came out in 2001. (FYI- this was the first Monster to use the ST style frame and 5.9 "immobilizer" electronics, all Monsters going forward use this)

From 2002 & 2005/2006 Ducati also went with a different location for the battery and airbox underneath the tank. So the cut out underneath is larger overall (hence why the older tanks don't fit) also the fuel filter is held inside the tank with a C clamp in these tanks, rather than just floating in the previous FI tanks. The easiest way to tell the difference between a 2000/2001 FI tank and a 2002/200x FI tank is by the fuel lines coming out of the bottom. Specifically the 2002/200x tanks have 4 lines coming out of the bottom, but only 2 are bent at 90 degrees (the smaller 1/4" or 6.35mm ones) are bent at 90 degrees and 2 the larger (5/16" or 8mm) ones point straight out of the bottom towards the ground when on the bike.

In 2005/2006 (in the US at least) all the tanks went to plastic. (But there's still a few Metals that were being depleted from stock, hence the 2 year span to actually completely change to plastic) simple check to confim, just check to see if a magnet sticks to it. These tanks have the same cutout underneath for battery and airbox. But have a different fuel filter/pump system that bolts into the bottom of the tank. They only have a gascap on the top of the tank and they use a different mechanism for the hinge.

2007 From what I hear, the S4RS tanks are very differently shaped too. But I've not seen one to tell you what those differences are compared to others.

[herm]

Ducati Performance CF: SKU code #96922200B

From "FITS ON" link:

Fuel tank
This item fits the following models:
Monster
1000 2005, 2004
1000 Dark 2003
1000S 2005, 2004, 2003
620 2006, 2005, 2004, 2003, 2002
620 Capirex 2004
620 Dark 2006, 2005, 2004, 2003, 2002
620 Dark Single Disc 2004
620 Matrix 2004
620S 2003, 2002
750 2002
750 Dark 2002
750S 2002
800 2004
800 Dark 2003
800S 2003
900 2002
900 Dark 2002
S4 2002, 2001
S4 Fogarty 2002
S4R 2006, 2005, 2004, 2003
S4R S Testastretta 2007

[herm]

Can we get some pictures of the undersides of the different tanks?

Specifically:
1. Plastic underside with good view of the fuel pump set up
2. Carbie tank with a good look at the fuel line connections
3. Injected tanks (various models) with a look at the shape and fuel line connections
3. different hinge styles (plastic Vs. metal)
4. Anything else that folks think is important / relevant

[Capo]

Can we get some pictures of the undersides of the different tanks?

Specifically:
1. Plastic underside with good view of the fuel pump set up
2. Carbie tank with a good look at the fuel line connections
3. Injected tanks (various models) with a look at the shape and fuel line connections
3. different hinge styles (plastic Vs. metal)
4. Anything else that folks think is important / relevant

I have pics detailing the connections of  FI steel and CF tanks, are we going to get a gallary and pic upload facility?

[herm]

I have pics detailing the connections of  FI steel and CF tanks, are we going to get a gallary and pic upload facility?

nope. need to host pics on another server (photobucket, etc...)
 wt:

[2001cromo]

Can a mod please sticky this thread 

Thanks

[NAKID]

Don't forget the easiest way to tell metal from plastic without touching it is to look where it rests on the frame. The metal tanks have the pinched together seam, the plastic tanks do not...

[Spider]

are all fuel caps interchangeable throughout the years?

obviously the 2001 onwards have the aluminium ring...they all have 5 allen/hex bolt on the outside?

also, does the external shape of the tank change in that 2002+ (& onwards) ? the knee dents are more forward aren't they?

[2001cromo]

1) are all fuel caps interchangeable throughout the years?

also,
2) does the external shape of the tank change in that 2002+ (& onwards) ? the knee dents are more forward aren't they?

1) Yes, you can use any cap for any year. And only 3 outside / 1 inside bolts are needed. the other 2 outside bolts are just for looks.

2) The knee cut outs only changed in 2000, and the newer ones are all the same. And for the record, you can use one that doesn't fit, but it's just  not perfect...

[herm]

are all fuel caps interchangeable throughout the years?

obviously the 2001 onwards have the aluminium ring...they all have 5 allen/hex bolt on the outside?

also, does the external shape of the tank change in that 2002+ (& onwards) ? the knee dents are more forward aren't they?

i think the biggest difference is whether the fuel cap comes from a carbie or a fuel injected bike. difference being that the FI tank requires the outer metal ring, inner metal plate, and a rubber gasket, which are seperate pieces from the actual cap, while on the carbie most of that stuff is already part of the tank.

[ducpainter]

The cap assemblies are all the same

[Spider]

thanks guys - I'm going to buy a 1098 cap for the monster - they are charcoal grey and will match the carbon better. Thanks very much....

having said that - I'd kill for a vintage Cagiva fuel cap with the elephant on it, tres cool!

Spider

[herm]

thanks guys - I'm going to buy a 1098 cap for the monster - they are charcoal grey and will match the carbon better. Thanks very much....

having said that - I'd kill for a vintage Cagiva fuel cap with the elephant on it, tres cool!

Spider

uh, your original post didnt specify a 1098 cap...
not saying it wont fit, but that does change the question a bit.

anyone with a 1098 want to chime in on this?

[Spider]

well, they are the same diameter, same 5 bolt patterm...so two out of three ain't bed!

then we just need the little leg that screws into the shelf of the tank to be the same...of and the locking mechanism too...

aaaghhhh...It'll never work!

[akmnstr]

I'm thinking of upgrading my older carb engine (98 bike) with a newer FI engine.  Will I have any problems matching my current tank to the newer 1000cc DS engine?