Discovery 2: TD5 Head Gasket Again? - Page 2





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  1. #21
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by jelo View Post
    the early TD5 had head dowel issues and the head would eventually shift

    which engine do you have? 10P?
    19P. 2002 Disco (Facelift)

    Why the gasket would be fine for 15-20k kms and then have a problem is a mystery. Both the block and head have been checked in the past and there were no problems, hence the idea to use some "Muti" on the gasket this time. Read on some of the UK forums, that a lot of guys use stuff on the gasket because the TD5 head in some cases actually moves around on the block.
    .................................................. ......
    Gary W


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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by Tsotsi View Post
    Read on some of the UK forums, that a lot of guys use stuff on the gasket because the TD5 head in some cases actually moves around on the block.
    The original engines had plastic dowels to locate the head and they would wear, allowing the head to move on the block, breaking the seal of the gasket.
    There was a kit to replace the dowels with steel ones, and some were left too long and used to foul the head when torquing down, with obvious failure again.
    I coated my gasket with Indian Head and we will see how long it lasts.
    Cheers,
    John

    Rover P6
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  3. #23
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    Default Re: TD5 Head Gasket Again?

    Not sure if I should use Indian Head or Coppertac Spray.

    Would be interesting to see what others have used.
    .................................................. ......
    Gary W


    Discovery 2 (Td5) Best 4x4xfar
    BMW GS 1200 Adventure. For when the road ends...
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  5. #24
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    Default Re: TD5 Head Gasket Again?

    Hi Gary,

    How many times have you had to do the HG? Did you ever find the reason why it went again? Sorry to scratch old wounds
    Last edited by Ryanie; 2019/08/17 at 03:22 PM.
    Its time...

    1999 Mitsubishi Pajero 3500 GLS 24v V6 GROWING ON ME
    2004 Discovery 2 TD5 Auto 226000km SOLD KINDA MISSED
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  6. #25
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by Ryanie View Post
    Hi Gary,

    How many times have you had to do the HG? Did you ever find the reason why it went again? Sorry to scratch old wounds
    Twice!

    Suspect that the first repair was not done correctly, as the engine started pushing bubbles into the cooling system shortly after the repair.
    It however only seemed to happen when driving on the freeway at load and worse when towing but not so much in town when travelling slower.
    .................................................. ......
    Gary W


    Discovery 2 (Td5) Best 4x4xfar
    BMW GS 1200 Adventure. For when the road ends...
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  8. #26
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    Default Re: TD5 Head Gasket Again?

    At what point does a TD5 become uneconomical to repair? Surely there can't be that many good used engines left?
    2012 Jeep Sahara Unlimited 3.6 V6
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  9. #27
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by Tsotsi View Post
    Twice!

    Suspect that the first repair was not done correctly, as the engine started pushing bubbles into the cooling system shortly after the repair.
    It however only seemed to happen when driving on the freeway at load and worse when towing but not so much in town when travelling slower.
    Thanks Gary

    Holding thumbs and hope we both never have to go down this road again��
    Last edited by Ryanie; 2019/08/24 at 03:59 PM.
    Its time...

    1999 Mitsubishi Pajero 3500 GLS 24v V6 GROWING ON ME
    2004 Discovery 2 TD5 Auto 226000km SOLD KINDA MISSED
    2008 Freelander 2.2 SE SOLD MISSED
    2013 BMW F800 GS SOLD MISSED
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    2016 SPECIALISED CAMBER CARBON COMP 29er

  10. #28
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by Tsotsi View Post
    Not sure if I should use Indian Head or Coppertac Spray.

    Would be interesting to see what others have used.
    While we are reviving an old thread.

    This is the worst thing to do. Never apply anything to a head gasket.


    Ever.
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  11. #29
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by jfh View Post
    While we are reviving an old thread.

    This is the worst thing to do. Never apply anything to a head gasket.


    Ever.
    Why is that?

  12. #30
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by jelo View Post
    At what point does a TD5 become uneconomical to repair? Surely there can't be that many good used engines left?
    not for a long time still..... TD5s are actually pretty affordable to rebuild. Parts are easily available and compared to alternatives they really aren’t that expensive. I would be very weary of buying a “good used” TD5 motor ever though, unless I actually knew the whole history of the motor personally. A TD5 rebuilt by someone who knows what they doing however will be good for at least another 300k km.

  13. #31
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by Skylark View Post
    Why is that?
    Unlike other gaskets, headgaskets are more complex.
    They have special "O-rings" embedded as well as metal gaskets and covered by a sealant.

    All manufacturers will state in the maintenance manuals that nothing should be applied to the headgaskets.

    Anything applied may interfere with the sealing of the gasket or may introduce a small particle that can cause a leak.

    Just think about how they usually stick to the block.
    '07 Land Rover Defender 110 TDI 300 Kalahari (Meisiekind˛)
    '84 Land Rover Defender 110 V8 4-speed Hardtop (Meisiekind) Sold after 12 years of fun and hard work.
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  14. #32
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by RPiet View Post
    not for a long time still..... TD5s are actually pretty affordable to rebuild. Parts are easily available and compared to alternatives they really aren’t that expensive. I would be very weary of buying a “good used” TD5 motor ever though, unless I actually knew the whole history of the motor personally. A TD5 rebuilt by someone who knows what they doing however will be good for at least another 300k km.
    Is the TD5 a wet sleeve engine or do you need to rebore?

    Quote Originally Posted by jfh View Post
    Unlike other gaskets, headgaskets are more complex.
    They have special "O-rings" embedded as well as metal gaskets and covered by a sealant.

    All manufacturers will state in the maintenance manuals that nothing should be applied to the headgaskets.

    Anything applied may interfere with the sealing of the gasket or may introduce a small particle that can cause a leak.

    Just think about how they usually stick to the block.
    That's how I understand it as well: adhesive on the TD5 gasket will impede the compression sealing of the gasket.
    2012 Jeep Sahara Unlimited 3.6 V6
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  15. #33
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    Default Re: TD5 Head Gasket Again?

    When the Indy did the head gasket which was around the 260K mark, you could still see hone marks in the sleeves. Number one cylinder though had a small ridge at the top, but according to Indie this was nothing to worry about.


    The reason the gasket was done the first time, was because of the stoopid rubber blank plug behind the turbo cracking and leaking, causing the van to overheat on the way back from Sondela towing the Jurgens.
    Car cut out while driving and once stopped on the side of the road, I could hear the engine hissing from due to overheating.

    Only damage was head gasket.


    A coolant level monitoring system is a MUST on these vehicles. Not sure why LR never fitted one as standard.

    She is now at 300K and, "Touch wood", running well.
    Last edited by Tsotsi; 2019/08/20 at 11:12 AM.
    .................................................. ......
    Gary W


    Discovery 2 (Td5) Best 4x4xfar
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    Jurgens XT120..home away from home.

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    Default Re: TD5 Head Gasket Again?

    [QUOTE=jelo;4210032]Is the TD5 a wet sleeve engine or do you need to rebore?

    Its not a wet sleeve, so needs to be rebored depending on the the condition of the cylinder. However sometimes just honing and new rings are all that are needed.

    Sleeve kits/Liners are however also available for the TD5 should you choose to go that way

  17. #35
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    Default Re: TD5 Head Gasket Again?

    [QUOTE=RPiet;4210418]
    Quote Originally Posted by jelo View Post
    Is the TD5 a wet sleeve engine or do you need to rebore?

    Its not a wet sleeve, so needs to be rebored depending on the the condition of the cylinder. However sometimes just honing and new rings are all that are needed.

    Sleeve kits/Liners are however also available for the TD5 should you choose to go that way
    There are over size pistons available as well now. I prefer just to resleeve and stay standard.

    When next in SA I will do a bottom half rebuild again, but I'm looking for a donor block.

  18. #36
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    Default Re: TD5 Head Gasket Again?

    So my Disco TD5 has been in the sick bay for a week now and today the head came off.

    I was there when they pulled the head and sure enough, head gasket leaking in cylinder one into water jacket. Bottom end looks good and head sent away to engineers to be tested.

    Found evidence of some kind of rubber gasket sealer which was partially obstructing the fuel passage.

    Spent some time chatting to Johan the mechanic and he seemed knowledgeable enough. Still hoping for no nasty surprises but so far so good. Will post pics of the offending parts when I get a gap. Its interesting to see exactly where the gasket went. Click image for larger version. 

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    Its time...

    1999 Mitsubishi Pajero 3500 GLS 24v V6 GROWING ON ME
    2004 Discovery 2 TD5 Auto 226000km SOLD KINDA MISSED
    2008 Freelander 2.2 SE SOLD MISSED
    2013 BMW F800 GS SOLD MISSED
    2005 FORD RANGER 2.5 TD DOUBLE CAB SOLD
    2016 SPECIALISED CAMBER CARBON COMP 29er

  19. #37
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    Default Re: TD5 Head Gasket Again?

    So my Disco TD5 has been in the sick bay for a week now and today the head came off.

    I was there when they pulled the head and sure enough, head gasket leaking in cylinder one into water jacket. Bottom end looks good and head sent away to engineers to be tested.

    Found evidence of some kind of rubber gasket sealer which was partially obstructing the fuel passage.

    Spent some time chatting to Johan the mechanic and he seemed knowledgeable enough. Still hoping for no nasty surprises but so far so good. Will post pics of the offending parts when I get a gap. Its interesting to see exactly where the gasket went. Click image for larger version. 

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    Last edited by Ryanie; 2019/08/28 at 08:37 AM.
    Its time...

    1999 Mitsubishi Pajero 3500 GLS 24v V6 GROWING ON ME
    2004 Discovery 2 TD5 Auto 226000km SOLD KINDA MISSED
    2008 Freelander 2.2 SE SOLD MISSED
    2013 BMW F800 GS SOLD MISSED
    2005 FORD RANGER 2.5 TD DOUBLE CAB SOLD
    2016 SPECIALISED CAMBER CARBON COMP 29er

  20. #38
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by RPiet View Post
    I would be very weary of buying a “good used” TD5 motor ever though, unless I actually knew the whole history of the motor personally.
    My Defender's (10P) motor cracked its head 2 months ago. Putting a new head on a block that has done 360 000+ didn't make sense to me. As I need the vehicle for my business, waiting to have it rebuilt would have cost too much in down-time.

    I found a company by the name of LDR Engines. Bad rep on Hello Peter, good rep on Google reviews. Their engines are sourced in the UK and (supposedly) all have less than 100K on. Took the plunge and bought one.

    Complete (15P) motor with Aircon, Alternator, Power steering Pump, Fan, Starter, Flywheel, clutch-plate, pressure-plate, the WORKS, literally plug and play. Cost me R29K with a 3 month guarantee (installed it myself. If they install it at a cost of 5.5K you get a 1 year guarantee).

    Have done just under 10 000 k's with it now and am VERY happy!
    Last edited by EttiennedK; 2019/08/28 at 09:04 AM.
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  22. #39
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by EttiennedK View Post

    I found a company by the name of LDR Engines.
    nice to know
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    Default Re: TD5 Head Gasket Again?

    Quote Originally Posted by Ryanie View Post
    So my Disco TD5 has been in the sick bay for a week now and today the head came off.

    I was there when they pulled the head and sure enough, head gasket leaking in cylinder one into water jacket. Bottom end looks good and head sent away to engineers to be tested.

    Found evidence of some kind of rubber gasket sealer which was partially obstructing the fuel passage.

    Spent some time chatting to Johan the mechanic and he seemed knowledgeable enough. Still hoping for no nasty surprises but so far so good. Will post pics of the offending parts when I get a gap. Its interesting to see exactly where the gasket went. Click image for larger version. 

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    AFAIK they were not supposed to use silicone or any type of sealant on the head gasket, so the one who did it previously stuffed it up.
    Willie

    2000 Land Rover Discovery II TD5
    2020 Nissan NP300 2.5TDi S/C

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