Multilink vs. 1031 in a 780

Discussion in 'Volvo 780' started by Per Mathisen, Dec 22, 2005.

  1. Per Mathisen

    Per Mathisen Guest

    Anybody knows how the multilink rear suspension in a -88 780, handels a V8
    compared to the 1031 axle?

    I have a -86 240 with a SBC V8 now, and haven't had any problems with the
    I'm now considering a V8 conversion in a 780, and wonder wheter to stay away
    from the multilink or purchase a -87 or older 780

    BTW, is there any possibility to change from multilink to solid rear axle in
    760/780 -88? Is it a bolt-on?

    Per Mathisen
    Per Mathisen, Dec 22, 2005
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  2. Per Mathisen

    Mike F Guest

    The guts of the differentials are the same, so as long as the case is as
    strong as on the solid axle, then the whole unit should be as durable.
    Since power and torque outputs where on their way up when this was
    designed, I'd bet that it is as strong or slightly stronger.

    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
    Mike F, Dec 22, 2005
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  3. Seriously Per, I wouldn't bother as the Multilink is far better than the old
    live axle set-up. In fact I am considering fitting Multilink mark 2 to my
    940 wagon, possibly including the post '95 front set-up as well. This would
    make my wheel choice different as the offset is the same as for 850 cars.
    The fitment of poly bushes is different, certainly for the front. It would
    be no good me fitting Multilink mark 1 as the fittings are quite a lot
    different to the live axle set-up presently on my wagon.

    All the best, Peter.

    700/900/90 Register Keeper,
    Volvo Owners Club (UK).
    Peter K L Milnes, Dec 23, 2005
  4. Per Mathisen

    James Sweet Guest

    What would you do about the offset in the front if you changed the rear?

    I've pondered the idea of 760 IRS on a 240, probably not easily feasible
    but it would be interesting.
    James Sweet, Dec 23, 2005
  5. James, the offset is as for 850 on 960s post '95 front and rear as the whole
    suspension geometry has been changed. There is no need to worry if you
    change the rear on an older car (like your proposed 240 with 760 IRS) as
    long as you don't swap front wheels to back and vice versa.

    As far as your proposed modification is concerned unfortunately 760 is wider
    than 240 in all aspects including tracking front and rear. The rear is
    adjustable for tracking but cannot cope with lessening the width of the
    suspension as the geometry will be way out. I agree it would be interesting
    if it were possible, but you would get more mileage from altering a 740 to
    760 IRS as it should fit okay on post '88 versions.

    All the best, Peter.

    700/900/90 Register Keeper,
    Volvo Owners Club (UK).
    Peter K L Milnes, Dec 24, 2005
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