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Thread: 86", front axle too far forward??

  1. #11
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    Just found a side-on picture of my 86" (from the 60th at Cooma).

    Wheel is to the front of the wing.




    Colin
    '56 Series 1 with homemade welder
    '65 Series IIa Dormobile
    '70 SIIa GS
    '76 SIII 88" (Isuzu C240)
    '81 SIII FFR
    '95 Defender Tanami
    '58 Series II (sold)
    Motorcycles :-
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  2. #12
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    Righto, can anyone confirm that the front prop shaft is longer on a 88" vs a 86"? I.e. when the chassis was extended 2", did the engine and transmission unit stay with the front axle or did it move back (and therefore need a longer front prop shaft)?
    I have been given a front prop shaft supposedly off a 88" but it is the same extended length as the front prop shaft on my 86". Can anyone point me to some specs that may give what the extended lengths for the shafts should be?

    Thanks
    Chris
    Chris


    2014 D4 TDV6
    1954 86"
    1963 2A Forward Control (getting the full treatment, Isuzu 4JH1, MYY5T, LT230, Toyota Axles, extended cab ++)
    1980 Stage 1 v8 (gone)

  3. #13
    JDNSW's Avatar
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    All the dimension changes from the 86 to 88 were forward of the firewall, and the whole idea was to allow a longer engine, so I assume the gearbox stayed put. This should make the front prop shaft longer.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  4. #14
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    Next stupid question...
    When a prop shaft is mentioned as being 21.813" (554mm) in length, what is this referring to (mid spline, compressed, extended length)?? Is this the length flange-to-flange on the vehicle?

    Thanks
    Chris
    Chris


    2014 D4 TDV6
    1954 86"
    1963 2A Forward Control (getting the full treatment, Isuzu 4JH1, MYY5T, LT230, Toyota Axles, extended cab ++)
    1980 Stage 1 v8 (gone)

  5. #15
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    Your guess is as good as mine, but I would think it meant flange to flange on the vehicle.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  6. #16
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    Both of my shafts are abt 530-590mm min-max lengths so I guess they are both 86" shafts...
    Chris


    2014 D4 TDV6
    1954 86"
    1963 2A Forward Control (getting the full treatment, Isuzu 4JH1, MYY5T, LT230, Toyota Axles, extended cab ++)
    1980 Stage 1 v8 (gone)

  7. #17
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    A neutral shaft length of about 554mm will fit S1 86 and 107" front and 86 and 88" rear..W.

  8. #18
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    My 86" is 575mm flange to flange front transfer output to the pinion flange. This explains why my front shaft separated as there was only 15mm of spline engagement before any droop.

    Very tempted to make up a 25mm spacer to space between the drive and shaft flanges at the transfer end...
    Chris


    2014 D4 TDV6
    1954 86"
    1963 2A Forward Control (getting the full treatment, Isuzu 4JH1, MYY5T, LT230, Toyota Axles, extended cab ++)
    1980 Stage 1 v8 (gone)

  9. #19
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    Just a thought,
    Could the rear spring brackets be over centre, so working forward instead of rear ward ????

    whitehillbilly

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