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Steve B



Member Since: 22 May 2009
Location: Warwickshire
Posts: 586

United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
Disaster
So I have been losing a little coolant now for a while, think I have found it...

The coolant drops are hanging on the head around the 3rd or 4th cylinders, so I can only think its the dreaded cracked head. I shall remove the exhaust manifold at the weekend.

Has anyone else experienced this and what route did they go down to fix it, I see there are some redesigned castings. Is there a preferable type to use to do the best fix? I foresee myself keeping my Defender for quite a while.

I will be doing the repair myself only need the parts.

Dam, was going to get her remapped soon too Sad


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Post #58369 10th Feb 2011 9:20pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5720

2006 Defender 110 Td5 USW Zermatt Silver
Is there a core plug/bolt thing that sticks out at the front of the head, exhaust manifold side??????????

Just after I brought mine it leaked along the exhaust manifold, and was an easy fix, warranty

Andy
Post #58372 10th Feb 2011 9:28pm
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Steve B



Member Since: 22 May 2009
Location: Warwickshire
Posts: 586

United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
OK, thanks Andy. I will definitely be diagnosing this 100% befor removing and replacing the head. Will look into that.

Just thinking though is that it has been sat still for about 5 days.

Forgot to add it is a year 2000 with 100k on.

Steve
Post #58374 10th Feb 2011 9:33pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5720

2006 Defender 110 Td5 USW Zermatt Silver
Should be ok then,

Mines an 04 with 135thou Whistle Whistle

Andy
Post #58384 10th Feb 2011 9:47pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5720

2006 Defender 110 Td5 USW Zermatt Silver
Here is a pic and it shows a core plug thing on the side of the head, and this one has also been leaking

Also check the top hose fitting, had a mates one where the hose clip had corroded through

http://img713.imageshack.us/img713/636/oil...eturnp.jpg

Andy
Post #58387 10th Feb 2011 10:08pm
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Steve B



Member Since: 22 May 2009
Location: Warwickshire
Posts: 586

United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
Thanks again. I guess all will become clear once the manifold is off. I have some nice stainless steel hose clips in the garage Smile
Post #58393 10th Feb 2011 10:25pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5720

2006 Defender 110 Td5 USW Zermatt Silver
Good luck with it Thumbs Up Thumbs Up

Andy
Post #58395 10th Feb 2011 10:32pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17417

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
landy andy wrote:
Here is a pic and it shows a core plug thing on the side of the head, and this one has also been leaking

Also check the top hose fitting, had a mates one where the hose clip had corroded through

http://img713.imageshack.us/img713/636/oil...eturnp.jpg

Andy


This is a well-known leak hot spot on the TD5 - my Disco 2 has been weeping slightly from here for 5 years and 100k miles and all I have done is top up the coolant once a month or so. It's on the list of jobs to get round to when time permits, and has been for 5 years! If the leak is not too bad, I wouldn't worry overmuch about it.

Really useful photo by the way, thanks Andy!
Post #58399 10th Feb 2011 11:14pm
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Zagato
Site Supporter


Member Since: 08 Jan 2011
Location: Billingshurst West Sussex
Posts: 5013

United Kingdom 
Turner Engineering put on stronger heads which are imported from Spain onto their remanufactured TD5 engines. Cracked heads are especially common on re-mapped engines apparently! Should be able to buy one from them Thumbs Up
Post #58405 11th Feb 2011 7:39am
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Steve B



Member Since: 22 May 2009
Location: Warwickshire
Posts: 586

United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
I waited til the end of the month and as my tax has run out and have sorn until April.

Took a few bits off yesterday and Landy Andy was spot on Thumbs Up it is the threaded core plug, and surprisingly it is loose!

Going out now (in the rain) to remove the head, I want to check the dowels and also 3 exhaust studs were already broken. The plan there is to helicoil the exhaust stud holes and fit long bolts and spacers, also drill out the outer stud holes in the manifold. Skim the manifold but not remove the webbing.

I may also give the cooling system a complete overhaul, new radiator/w-pump and maybe new pipes. The top hose adapter on the head is also showing signs of corrosion.

Maybe some photos later.

Steve
Post #61267 27th Feb 2011 11:58am
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BigRuss



Member Since: 15 May 2010
Location: Norfolk
Posts: 2785

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
Zagato wrote:
Turner Engineering put on stronger heads which are imported from Spain onto their remanufactured TD5 engines. Cracked heads are especially common on re-mapped engines apparently! Should be able to buy one from them Thumbs Up


I had the gasket go in my disco 2 and the garage was talking about the new reinforced heads from Spain. They are the same people that reinforced the v8 Heads. Russell
2011MY 110 XS USW Black
Post #61283 27th Feb 2011 1:49pm
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MONKEYCOPPER



Member Since: 26 Feb 2011
Location: Gloucestershire
Posts: 4

United Kingdom 2004 Defender 110 Td5 CSW Alpine White
landy andy wrote:
Should be ok then,

Mines an 04 with 135thou Whistle Whistle

Andy


i can beat that with mine, 04, 146,000 ! ! Smile
Post #61794 2nd Mar 2011 10:58am
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Steve B



Member Since: 22 May 2009
Location: Warwickshire
Posts: 586

United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
100k on my year 2000, I guess it woul have gone for much longer if I wasn't determined to find the water leak.

Anyone else have to top up there water? I was putting about 200ml every other month

Steve
Post #61803 2nd Mar 2011 12:10pm
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changill



Member Since: 13 Dec 2008
Location: North West - Preston/Lancaster
Posts: 27

United Kingdom 2003 Defender 90 Td5 HT Bonatti Grey
Steve B wrote:
100k on my year 2000, I guess it woul have gone for much longer if I wasn't determined to find the water leak.

Anyone else have to top up there water? I was putting about 200ml every other month

Steve


Not yet Steve.....but wife's mate is putting a similar amount in her Disco 2. I'll have a look at the core plug next time I'm round her house. Thumbs Up Only Alcohol Can Save me Now

Nanocom Available in the North West
Post #61927 3rd Mar 2011 7:30am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17417

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Steve B wrote:
100k on my year 2000, I guess it woul have gone for much longer if I wasn't determined to find the water leak.

Anyone else have to top up there water? I was putting about 200ml every other month

Steve


Yup, like I said earlier in the thread, I have been adding a teacupful a month for the last five years or so to my Disco 2.

It's an '02 with 200k miles, by the way, so I win! Very Happy
Post #61959 3rd Mar 2011 9:47am
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