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Disco 3 (LR3) Land Rover Discovery - Buying

Discussion in 'Land Rover Discovery' started by Intestinalworm, Jun 26, 2022.

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  1. Stanleysteamer

    Stanleysteamer Well-Known Member Full Member

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    I was talking about a 300tdi so not a petrol V8 and yes I don't do 70 mpg as that does drop the mpg, or put it up whichever way you look at it.
    I usually drive at between 60 and 65, trying to keep to about 2000 revs, peak torque, in top gear, which as we all know is where maximum economy is. AND I don't power up hills like a tw@t.
    Cruise control is great EXCEPT on hills.
    I'm not a hypermiler and I only drive like this when doing long distances NOT against the clock, but whatever type of driving I am doing the 300tdi wins hands down over the TD5 auto when it comes to economy.
    It might be more close run if the TD5 wasn't auto.
     
    lynall likes this.
  2. Stanleysteamer

    Stanleysteamer Well-Known Member Full Member

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    Somebody who never had to take the exhaust gasket off and have it reground and the studs drilled out!
    I have never heard of "cylinder head shuffle". Where do they get this from?
    I did say there was debate about the dowel types. but i would maintain, personally, that proper tightening down of the head bolts should prevent all movement, but then I am old skool enough to remember the days when a head was allowed to settle after being refitted and then the cylinder bolts were loosened and retightened again to ensure the HG didn't leak nor anything else come untoward. I once left it too long on a Dolomite Sprint and, sho nuff, the fecker went and bananaed on me again.:eek::mad:
    There are still tw@ts about who don't or won't use a torque wrench as they feel it might damage their manhood.
    Just calling them "retaining studs" gives the wrong impression of what they are there for.
     
    Intestinalworm likes this.
  3. Stanleysteamer

    Stanleysteamer Well-Known Member Full Member

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    This is a notice from LR itself, which kinda or at least in part, backs up what I said about replacing like with like.
    so "up yours" you two twerps who wrote the section in Wikipedia.

    Ok just found the LR Notice on this;
    Quote:
    AFFECTED RANGE:

    All Td5 derivatives within VIN ranges:
    Discovery Series II (02 Model Year) 2A 736340 to 3A 793895
    Defender (02 Model Year) 2A 622424 to 3A 647705

    SUBJECT:
    CYLINDER HEAD LOCATING DOWELS
    Td5 engines fitted to vehicles in the above VIN range are fitted with plastic dowels to locate the cylinder head onto the cylinder block.

    Land Rover Engineering has introduced steel locating dowels from the following VIN numbers:
    Discovery Series II: 3A 793895
    Defender: 3A 647705

    INFORMATION:
    If a cylinder head is removed from a vehicle in the above VIN range, the plastic dowels must be replaced with new specification steel dowels, which are now available from Land Rover Parts.

    CAUTION:
    Td5 derivatives prior to the above VIN ranges must not, under any
    circumstances, be fitted with the new steel dowels. If steel dowels are fitted to earlier engines, cylinder head cracking may result.


    and notice, LR calls them "locating dowels" not "retaining dowels". WP isn't always accurate.
     
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  4. Stanleysteamer

    Stanleysteamer Well-Known Member Full Member

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    The two authors were Robson and Gould as far as I can make out from wikipedia and they are just that, writers, .................like Boris Johnson and Micheal Gove.
    Need I say more!!!
     
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  5. MJI

    MJI Well-Known Member

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    I got 24mpg over 140 miles from a TD5 auto, about half the time below lockup, and quite a few hills.

    Unlocked 20 is about right, locked 27 to 30 about right.

    Manuals should be much better.

    Not done the forced lockup mod either.
     
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  6. Stanleysteamer

    Stanleysteamer Well-Known Member Full Member

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    Sounds much like ours.
    In Frogland trying to get lock up on an A road is nightmare now so many of them are limited to 80 kph.
     
  7. Intestinalworm

    Intestinalworm Well-Known Member

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    What you said makes sense - 12 torqued up bolts, but somehow it comes down to the two dowels??? Having said that, some "expert" has wrote that in Wikipedia and I have seen it elsewhere - "cylinder head shuffle" due to (plastic) dowels / "retaining studs"? You can't always believe what you see in print eh?:p:D
     
  8. Intestinalworm

    Intestinalworm Well-Known Member

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    Yes I read that as well - sometimes the truth gets lost in the mists of time!
     
  9. lynall

    lynall Well-Known Member

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    I was talking about a D3.
    Im my experience of discos, each generation is worse on fuel than the previous model.
     
  10. lynall

    lynall Well-Known Member

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    Iirc you can modify wiki entries.
    Oil pump bolt failure was a real issue in the day, seemed every day another new thread would pop up on a forum with a blown td5 engine, much the same as the d3 and the D4!
     
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  11. MJI

    MJI Well-Known Member

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    I may try to add a switch to the lockup line so i could manually at say 45mph.

    GM auto boxes were do much better controlled than ZF
     
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