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Thread: Why do 2.7 cranks break?

  1. #211
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    Quote Originally Posted by 4bee View Post
    You are so bloody practical, Mike.
    Predictable is good Why do 2.7 cranks break?
    I do my servicing, check my vehicle and predict it’s good for another interval. Why do 2.7 cranks break?

    What was always unpredictable was how it would come back from someone else working on it.

  2. #212
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    Quote Originally Posted by 101RRS View Post
    Well prove it is not so .
    Hehe. I cannot. I haven’t spoken to 100 failed engine owners Why do 2.7 cranks break?

  3. #213
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    Quote Originally Posted by Tombie View Post
    Hehe. I cannot. I haven’t spoken to 100 failed engine owners Why do 2.7 cranks break?


    YET.

  4. #214
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    Quote Originally Posted by PerthDisco View Post
    I think it’s a super important Aulro discovery (pardon pun) as literally the whole world is pointing to the oil filter on top as the worst possible design as all oil flows back to sump on shutdown and the pump needs to fill it all up again especially after a long shutdown. We’ve shown that not to be the case as long as the NRV works. Maybe that’s a fail point maybe not.
    the mann filter has a non return valve they say...

    why would there be 2 ?
    2007 Discovery 3 SE7 TDV6 2.7
    2012 SZ Territory TX 2.7 TDCi

    "Make the lie big, make it simple, keep saying it, and eventually they will believe it." -- a warning from Adolf Hitler
    "If you don't have a sense of humour, you probably don't have any sense at all!" -- a wise observation by someone else
    'If everyone colludes in believing that war is the norm, nobody will recognize the imperative of peace." -- Anne Deveson
    “What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.” - Pericles
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  5. #215
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    Quote Originally Posted by incisor View Post
    the mann filter has a non return valve they say...

    why would there be 2 ?
    The actual paper filter is just a cartridge with a nipple plug on the bottom and a hole in the middle. There’s no gizmos or moving parts

  6. #216
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    Quote Originally Posted by PerthDisco View Post
    The actual paper filter is just a cartridge with a nipple plug on the bottom and a hole in the middle. There’s no gizmos or moving parts
    that is what i thought when i looked at it but have seen it listed twice that there is a nrv...

    someone doing copy and pastes into spec sheets.... maybe
    2007 Discovery 3 SE7 TDV6 2.7
    2012 SZ Territory TX 2.7 TDCi

    "Make the lie big, make it simple, keep saying it, and eventually they will believe it." -- a warning from Adolf Hitler
    "If you don't have a sense of humour, you probably don't have any sense at all!" -- a wise observation by someone else
    'If everyone colludes in believing that war is the norm, nobody will recognize the imperative of peace." -- Anne Deveson
    “What you leave behind is not what is engraved in stone monuments, but what is woven into the lives of others.” - Pericles
    "We can ignore reality, but we cannot ignore the consequences of ignoring reality.” – Ayn Rand
    "The happiness of your life depends upon the quality of your thoughts." Marcus Aurelius

  7. #217
    BradC is offline Super Moderator
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    Quote Originally Posted by incisor View Post
    the mann filter has a non return valve they say...
    If you look at it from a different angle, the filter is the media, cartridge and housing. A conventional spin-on is the same, it's just in a sealed all in one tin. The anti-drainback valve is usually a rubber skirt over the inlet holes.

  8. #218
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    Quote Originally Posted by 4bee View Post
    YET.
    Interesting you should say that.
    I only know one owner personally, that guy had done over 500,000km when his engine let go.

    And that was an early D3

  9. #219
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    Quote Originally Posted by Tombie View Post
    Interesting you should say that.
    I only know one owner personally, that guy had done over 500,000km when his engine let go.

    And that was an early D3


    So, 'twas about due for a bit of work anyway?


    Still, one doesn't expect to have to spend big $ what would you be looking at $ wise $10 - 15,000?

  10. #220
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    Why do 2.7 cranks break?

    Received the MANN oil filter today. The OD measured across the o-ring on the spigot was 11.1mm

    Removed the MAHLE filter - oil had already drained to the level of the drain hole (which is meant to be plugged by the spigot). But was happy to see it was completely flooded above the anti-drain valve.



    By the way - this is fresh new oil that is already black from less than 1 hour of running - just shows how much oil is left behind during an oil change.

    The OD of the MAHLE filter o-ring was 10.8mm.

    This difference is only a fraction of a mm but exactly what people reported on Lr-club.com.

    The MANN filter locked in nice and firm when fitting. Will have to get a Ryco filter next time to compare.

    Normal 4 secs for oil light to go off first time, and then on re-start goes out as engine is cranking. After the weekend will park the car up for a few days to see if there is any change with the oil light off time. 🤞🤞🤞🤞

    Meanwhile some more photo’s.

    First is the hole in the housing just below the rubber seal. When you open up the filter 4-5 turns this not only lifts the filter element up and out of the drain hole, but this small hole in the housing is also exposed and allows air in so it drains off.



    Next is the blocked filter bypass. As Brad suspected it does appear to be in the top of the housing cover itself. Does not look to be serviceable.



    The photo is difficult to see, but it does look like a match for a typical bypass valve, but would have to pull out to truly know.

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