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Thread: TD5 down for the count.

  1. 15th December 2010, 05:13 PM #1
    canblogerra Guest

    TD5 down for the count.

    Has anyone experience relining TD5 cylinders? A 86.19mm diameter disk looks like it'd sit on a tapered something underneath but I'm not sure whether its a liner. Liners are for sale, but since they aren't mentioned or sold by LR as far as I can see, maybe blocks are are being specially machined to fit them. I've heard there are no oversize pistons and a re-line, or -sleave, might be an option. See photo for damage.

    Also has anyone advice on removing and refitting valve springs. I got two off with great difficulty (and many finely balanced clamps) but putting them back the same way is not going to work. Got to choose between a replacement head or a spot of weld and resurfacing a small dip that'll leak water to the cylinder otherwise.

    Fun Fun fun. Will readup on the manifold mods while I'm at it.
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  2. 15th December 2010, 05:29 PM #2
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    stig0000
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    what happend to the motor,
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  3. 15th December 2010, 07:33 PM #3
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    Wow looks like you've had the head of a valve bounce around inside there at plenty of revs.

    Drop me a message with your details and I'll give you a hand with the strip down......although, there is a complete engine for sale on ebay if you didn't know - good price and may be worth your while!
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  4. 15th December 2010, 08:46 PM #4
    canblogerra Guest
    I can't say what happened. The valves were OK, i.e. not dropped but ... ??? Looks like the piston 4 melted. The gudgeon pin had lost a circlip so maybe that allowed it to heat with friction on the liner ... then again maybe it just corroded away with a long long drink of water from a leaking head gasket (plastic location pins have been rumoured to cause problems - mine were certainly disintegrated)
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  5. 15th December 2010, 08:51 PM #5
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    I am no mechanic but from what I have seen on my mates Patrool, I would say over-fueling.
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  6. 15th December 2010, 08:57 PM #6
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    Blknight.aus
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    Quote Originally Posted by big guy View Post
    I am no mechanic but from what I have seen on my mates Patrool, I would say over-fueling.
    Chading.

    piston side injector seal failure can cause this as can a contaminated fuel damaged injector thats not shutting off.
    Dave

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  7. 15th December 2010, 09:45 PM #7
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    I'd imagine that once the piston crown hardface is compromised, meltdown is pretty much a done thing

    Looks unpleasant but a resleeve will fix that. The Td5 has no liners, it will need a sleeve inserted, piston rings and a set of bearings.

    Establishing exact cause of failure would be a good idea too

    Should come out A1.

    Tough little engines these.

    JC
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    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  8. 17th December 2010, 10:20 AM #8
    canblogerra Guest
    Thanks for the advice to confidently move forward JustinC, but in my ignorance I assumed 'liner' was just an acronymn for 'sleeve'. There's only about 1/2mm of meat to sit on underneath to pull what might be a liner up (if its not just a pretty backfacing on the block that is) and it is tapered at about 45degrees.

    Can the sleeve be pulled out or is it just machined away without braking through to the surrounding water volume? Is that what makes a sleeve different to a liner which has water seals on its base etc...?

    Thanks for advice.
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  9. 17th December 2010, 04:12 PM #9
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    The block is cast like that, it is the 'parent bore' you are looking at

    The sleeve is quite thin walled, the block gets bored and the sleeve interference fitted, then bored/ honed to size. It is there for the life of the engine.

    JC
    The Isuzu 110. Solid and as dependable as a rock, coming soon with auto box😊
    The Range Rover L322 4.4.TTDV8 ....probably won't bother with the remap..😈
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  10. 18th December 2010, 11:09 AM #10
    canblogerra Guest
    Just discovered oversize pistons could be had for the TD5 (+020) so I'll be looking to rebore the linings etc ...

    Otherwise took the torque converter off with the motor (not the recommended method) and noticed oil in it's centre. Tipped it up to clean it out and a few spoonfulls of oil escaped before I realised I wasn't helping the situation.

    Have tried reading the manual to understand the consequence or otherwise of my actions but to no avail. Can anyone advise me on whether it is serious to have a bit of oil flow out from the centre of a torque converter, and if so is their something that can or needs to be done like topping it up somehow?

    Cheers.
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