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Thread: A question for the experts....HELP!!

  1. 26th August 2009, 08:28 PM #1
    Noki 3.9's Avatar
    Noki 3.9
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    A question for the experts....HELP!!

    Hi all, long time no see.
    I have a task ahead of me to work out why my mates RR wont rev unless the choke is pulled out. He has recently fitted a 3.9 from a disco and fitted the new engine with the carbies from the 3.5.
    So what are your thoughts? Im thinking from what I have heard that its running lean, but I havnt seen the car yet.
    If it is running lean how do you richen the mixture on those carbies?
    Also has anyone had luck fitting a Holley, ie: hill climbing out on the tracks. Do they flood when on extreme angles. I know he has one on a wreck out back and Im familiar working on Holley's.
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  2. 26th August 2009, 09:54 PM #2
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    Sounds like it is lean. Are the carbs in good condition? Rubber diaphragms not perished or split?

    From memory adjusting the mixture requires a special tool.
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  3. 27th August 2009, 07:30 AM #3
    Noki 3.9's Avatar
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    I was afraid that you would say that.
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  4. 27th August 2009, 08:11 AM #4
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    Holleys apparently do flood when stock. Some people swear by modded ones. Search here or on OL for the details of the mods to prevent flooding, pretty simple from memory.

    cheers, DL
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  5. 27th August 2009, 12:50 PM #5
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    Check there is oil in the tops of the carbs under the plastic screw caps.
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  6. 27th August 2009, 03:45 PM #6
    Noki 3.9's Avatar
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    Thanks guys all info muchly appreciated
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  7. 27th August 2009, 08:13 PM #7
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    Whatever you do, stick with the twin carbs. Properly jetted they are far superior. Find someone who knows what to do with them and you'll get a better result than a holley conversion IMHO. I have changed the needles in a 3.9 fitted to a 110, fantastic results and better on fuel.

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    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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