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Thread: 3.5 crank into 3.9?

  1. #1
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    3.5 crank into 3.9?

    Okay looks like i may have a cracked crank on my 3.9... no oil pressure and won't go don't ask

    So if the engines buggered considering i just had it serviced a couple months back with new injectors etc... do you know if a crank out of a 3.5 will fit a '98 3.9v8

    Cheers in advance.

    FOX 2008 RRS - Artemis 1989 Perentie FFR - Phoenix S2a 88" with more - Beetlejuice 1956 S1 86" - GCLRO #001 - REMLR #176
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  2. #2
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    who did you run over?

    bloody hell man....
    2007 Discovery 3 SE7 TDV6 2.7
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  3. #3
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    Same stroke and journal size so should be ok but you will virtually need a full bottom end rebuild to fit it.
    MY08 TDV6 SE D3- permagrin ooh yeah
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  4. #4
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    what have you done josh?
    run over a chinaman?

    what makes you think the crank is sick?
    yep 'don't ask', doesn't work with me.
    Safe Travels
    harry

  5. #5
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    Love to know the symptoms of a cracked crank!!!
    "How long since you've visited The Good Oil?"

    '93 V8 Rossi
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    '03 4.6 V8 HSE D2a with Tornado ECM
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  6. #6
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    full loss of oil pressure with a bit more driving afterwards... all from overfilling with oil

    Now don't i feel like a loser a v8 disco is worth nothing even when running... so anyone want some parts

    FOX 2008 RRS - Artemis 1989 Perentie FFR - Phoenix S2a 88" with more - Beetlejuice 1956 S1 86" - GCLRO #001 - REMLR #176
    EVL '96 Defender 110 - Emerald '63 2a Ambulance 112-221 - Christine '93 Rangy - Van '98 Rangy - Rachael '76 S3 GS - Special '70 S2a GS - Miss B '86 Rangy -
    RAAF Tactical 200184 & 200168


  7. #7
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    bags the transfer case, auto, front diff and rear diff, engine and all the other stuff.
    Safe Travels
    harry

  8. #8
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    Get a 4.2 stroker crank.
    2011 Discovery 4 TDV6
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  9. #9
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    Quote Originally Posted by Outlaw View Post
    full loss of oil pressure with a bit more driving afterwards... all from overfilling with oil
    This is interesting - just how "overfull" ?

    There's a 3.9 with a blown head gasket on eBay ATM & I know someone who has a short motor for sale (but it's in Sydney).


    You are also more than welcome to the crankshaft out of my 3.5 RR motor as that's getting stripped down shortly.
    Free but you'd have to pay postage.
    Scott

  10. #10
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    about 15-20mm over the full mark... maybe 1.5L

    FOX 2008 RRS - Artemis 1989 Perentie FFR - Phoenix S2a 88" with more - Beetlejuice 1956 S1 86" - GCLRO #001 - REMLR #176
    EVL '96 Defender 110 - Emerald '63 2a Ambulance 112-221 - Christine '93 Rangy - Van '98 Rangy - Rachael '76 S3 GS - Special '70 S2a GS - Miss B '86 Rangy -
    RAAF Tactical 200184 & 200168


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