Installing big 940 fuel tank into 740?

Discussion in 'Volvo 940' started by William Liao, Jan 29, 2004.

  1. William Liao

    William Liao Guest

    Hi guys,

    I know for certain that from '93 940's (both Sedan and Wagon) received a
    larger 75 litre (19.8 USGal) fuel tank, which was 25% larger than what the
    740's and early 940's (up to '92) had. I was wondering if anyone has ever
    tried fitting the larger tank to an earlier model that came with the smaller
    tank, and if so was the installation straightforward?

    If anyone has a '93 and later model 940 at home, as well as a 740 or earlier
    940 (up to '92), can they please take a look for me and let me know how
    different are the fuel tanks, and if it's going to be easy to swap them
    over?

    P.S. IRS sedan's, ie. 760's from '88 and 960's, has an even larger fuel
    tank which holds 80 litres. I know these will NOT fit into cars with solid
    rear axle so I'm NOT asking about these. The 75 litre tank I am asking about
    are standard on 940's from '93 which still has the solid rear axle.
    _________________
    Will
    '90 Volvo 744 GLT
    B230F converted to B230FB (531 Head & VX3 Cam)
     
    William Liao, Jan 29, 2004
    #1
  2. Interesting idea Will, that would make your car a 97 litre tank! Taking
    into account all Volvo 740's sold in Australia had the extra 22 litre
    auxilary tank installed as standard added to the normal 60 litre tank.
     
    Peter Gottschald, Jan 29, 2004
    #2
  3. William Liao

    William Liao Guest

    Yes, that is the idea. I will have a total of 97 litre fuel tank, which
    will give my car an estimate range of around 1,150km (most I've done so far
    with 82 litre tank is 950km). I'll be able to do Brisbane - Sydney easily
    with plenty of fuel to spare!

    Anyway I bought a 75 litre fuel tank from a '93 940 already, so far it looks
    like everything should fit. The only problem I can foresee is the fuel
    gauge reading may not be correct (I'll be using the fuel tank sender and
    in-tank fuel pump that came with the 940 tank). But that's a small penalty
    I am willing to pay.
    _________________
    Will
    '90 Volvo 744 GLT
    B230F converted to B230FB (531 Head & VX3 Cam)
     
    William Liao, Feb 1, 2004
    #3
  4. William Liao

    Patrick Guest

    Is it possible to do something similar with a '93 240? I would gladly
    replace the 60 litres tank by something larger.
     
    Patrick, Feb 1, 2004
    #4
  5. i would think each tank will have its own guage...just hide another
    guage somewhere you can get acess and read when you wonder...then wire
    up a dula guage to give you the reading for the new tank...nice
    thought...let us all know how the install and config goes...extra fuel
    on board (if you dont mind the weight...est @ 6 lbs per
    gal..?)...would be nice and handy...
     
    ~^ beancounter ~^, Feb 1, 2004
    #5
  6. My wife and I have 88 & 90 turbos both with 82 litre tanks standard .
     
    John Robertson, Feb 10, 2004
    #6
  7. William Liao

    Peter Milnes Guest

    That's 10 lbs for each Imperial Gallon mate! Somewhere around 2.5 lbs /Litre.

    Cheers, Peter.

    : i would think each tank will have its own guage...just hide another
    : guage somewhere you can get acess and read when you wonder...then wire
    : up a dula guage to give you the reading for the new tank...nice
    : thought...let us all know how the install and config goes...extra fuel
    : on board (if you dont mind the weight...est @ 6 lbs per
    : gal..?)...would be nice and handy...
    :
    :
    :
    :
    : > Yes, that is the idea. I will have a total of 97 litre fuel tank, which
    : > will give my car an estimate range of around 1,150km (most I've done so far
    : > with 82 litre tank is 950km). I'll be able to do Brisbane - Sydney easily
    : > with plenty of fuel to spare!
    : >
    : > Anyway I bought a 75 litre fuel tank from a '93 940 already, so far it looks
    : > like everything should fit. The only problem I can foresee is the fuel
    : > gauge reading may not be correct (I'll be using the fuel tank sender and
    : > in-tank fuel pump that came with the 940 tank). But that's a small penalty
    : > I am willing to pay.
    : > _________________
    : > Will
    : > '90 Volvo 744 GLT
    : > B230F converted to B230FB (531 Head & VX3 Cam)
    : >
    : > : > > Interesting idea Will, that would make your car a 97 litre tank! Taking
    : > > into account all Volvo 740's sold in Australia had the extra 22 litre
    : > > auxilary tank installed as standard added to the normal 60 litre tank.
    : > >
     
    Peter Milnes, Feb 11, 2004
    #7
  8. William Liao

    William Liao Guest

    One litre of petrol is around 0.72kg (learnt that from flight training, had
    to make sure I don't overload the airplane). Since there is only 2.2 lbs in
    1kg, in other words one litre of petrol should only be 1.584 lbs.
    _________________
    Will
    '90 Volvo 744 GLT
    B230F converted to B230FB (531 Head & VX3 Cam)
     
    William Liao, Feb 11, 2004
    #8
  9. William Liao

    William Liao Guest

    All Australian 700 series sedan got the auxiliary 22 litre tank in the boot
    as standard (I am in Australia too). 60 litre main tank + 22 litre
    auxiliary tank gives you a total of 82 litres.

    As I was saying, 940's from '93 got a new, larger 75 litre main tank instead
    of the old 60 litre tank. If I replace the 60 litre tank with 75 litres in
    my car, my total fuel capacity would be 75 + 22 = 97 litres. That's what
    I'm trying to achieve.
    _________________
    Will
    '90 Volvo 744 GLT
    B230F converted to B230FB (531 Head & VX3 Cam)
     
    William Liao, Feb 11, 2004
    #9
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