↓ Advertise on Defender2 ↓

Home > Td5 > Td5 Cylinder Head Repair ?
Post Reply  Down to end
Page 1 of 2 12>
Print this entire topic · 
Nidge



Member Since: 27 Jan 2008
Location: Kildare Ireland
Posts: 809

Ireland 2009 Defender 110 Puma 2.4 HCPU Cairns Blue
Td5 Cylinder Head Repair ?
Anyone had a crack in their td5 Head repaired....fella on ebay offering this service for around £200 all in !

The head is cracked and diesel leaking into the engine and yes I have changed the injector seals with gen. Lr ones.
Leaks around 4litres of fuel in every 2 weeks Big Cry
Would like to but Can't afford to pay Turners for a new Spanish head.

Tks
Nigel.
Post #196215 24th Dec 2012 12:54pm
View user's profile Send private message View poster's gallery Reply with quote
shazzy90



Member Since: 17 Dec 2010
Location: tyneside
Posts: 489

how did you know the head is cracked?any symptoms to look out for?
Post #196283 24th Dec 2012 5:40pm
View user's profile Send private message View poster's gallery Reply with quote
yobbie



Member Since: 15 Nov 2010
Location: Isle of Wight
Posts: 711

United Kingdom 1999 Defender 90 Td5 Heritage LE Bronze Green
Do you know how they repair it? If its welded I would be concerned about distortion.
Post #196306 24th Dec 2012 6:50pm
View user's profile Send private message View poster's gallery Reply with quote
Nidge



Member Since: 27 Jan 2008
Location: Kildare Ireland
Posts: 809

Ireland 2009 Defender 110 Puma 2.4 HCPU Cairns Blue
shazzy90 wrote:
how did you know the head is cracked?any symptoms to look out for?



Oil level increases on the dipstick due to diesel leaking into the engine.
Not uncommon in the td5 engine !

N.
Post #196309 24th Dec 2012 6:58pm
View user's profile Send private message View poster's gallery Reply with quote
Nidge



Member Since: 27 Jan 2008
Location: Kildare Ireland
Posts: 809

Ireland 2009 Defender 110 Puma 2.4 HCPU Cairns Blue
yobbie wrote:
Do you know how they repair it? If its welded I would be concerned about distortion.


I believe its welded and then they re-bore the injector port

N.
Post #196310 24th Dec 2012 6:59pm
View user's profile Send private message View poster's gallery Reply with quote
tazmarkuk



Member Since: 24 Jan 2012
Location: Birmingham
Posts: 134

England 2000 Defender 110 Td5 HT Chawton White
i would check the injector seals first as this give's the same symptons when they are gone.

If the head is cracked I would locate the crack first as this needs to be completly cut out and new ali welded in other wise the crack will increase if not done properly, if its a large crack then you could have the head distort from the heat of welding; safer to get a good second hand head if you can't afford a new one.
Post #197544 30th Dec 2012 4:15pm
View user's profile Send private message View poster's gallery Reply with quote
ben_j85jty



Member Since: 02 Sep 2008
Location: Bicester, Oxfordshire
Posts: 491

United Kingdom 2002 Defender 110 Td5 XS DCPU Bonatti Grey
I believe Nidge has alredy done the injector seals.

From experience it is rarely the injector seals. 2002 Defender 110 DC
Post #197565 30th Dec 2012 5:34pm
View user's profile Send private message View poster's gallery Reply with quote
yobbie



Member Since: 15 Nov 2010
Location: Isle of Wight
Posts: 711

United Kingdom 1999 Defender 90 Td5 Heritage LE Bronze Green
We do lots of aluminium welding at work & I wouldn't do a head as its unlikely to stay flat and if it needs skimming its unlikely to run right again. As Tazmarkuk says get a good second hand one.
Post #197570 30th Dec 2012 5:59pm
View user's profile Send private message View poster's gallery Reply with quote
jasong4110



Member Since: 18 Oct 2009
Location: Henley On Thames
Posts: 268

United Kingdom 2003 Defender 110 Td5 G4 LE Java Black
When my head went I read lots about having it welded and also saw the guy on ebay his fix is for a very localised crack on the injector port, they don't normally go there and are actually more likely to crack inside on the fuel rail. Everything I read seemed to point that as the head expanded and contracted a lot then a weld would most likely fail over time.

Jason.
Post #197597 30th Dec 2012 7:09pm
View user's profile Send private message View poster's gallery Reply with quote
Nidge



Member Since: 27 Jan 2008
Location: Kildare Ireland
Posts: 809

Ireland 2009 Defender 110 Puma 2.4 HCPU Cairns Blue
Thanks for confirming my own thoughts that a repair is not a great idea !

May go with a turners reconditioned head, which they say are LR heads, for £695 and 12 month warranty.

N.
Post #197682 31st Dec 2012 8:00am
View user's profile Send private message View poster's gallery Reply with quote
Steve B



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

United Kingdom 2000 Defender 90 Td5 SW Caledonian Blue
Hi Nidge,

That's a lot of money for a recon head, how much are the AMC heads now?

I bought mine from adventure4x4 £1100, at least 2 issues have been addressed with the AMC head. Cracking water jacket, mine did this on cyl.1 and cracking injector locations. This is down to very thin material in this area which is much thicker on the AMC heads. When you do change your head on the outside edge of this location the edge is very jagged and sharp. This is perfect for a crack to start from, spend a couple of hours and make a nice polished radius with a small file and finishing with 400 grit emery paper. This will remove any stress raisers. Do the same also if you get an AMC head, I highly recommend this choice if you can save up the extra.

The water jacket problem I had looks like poor quality casting, I am unsure how to make this better on a recon head. Maybe impregnate with a sealant. This method is common with engine manufacturers.

Finally fit steel dowels not plastic ones.

Steve 
Post #197697 31st Dec 2012 9:31am
View user's profile Send private message View poster's gallery Reply with quote
excossack



Member Since: 22 Feb 2012
Location: North West
Posts: 5725

United Kingdom 1999 Defender 110 Td5 SW Caledonian Blue
When the head went on my 1999 TD5 the garage put an AMC head on. All in all, £2068 !!!!! 1999 Defender TD5 110

Regards
John M0VAZ
Econet Station 48 no clock
Post #197727 31st Dec 2012 11:23am
View user's profile Send private message View poster's gallery Reply with quote
UNIT 2B ENGINEERING



Member Since: 18 Feb 2013
Location: lincoln
Posts: 2

United Kingdom 
Hi all , td5 heads never ever crack in the internal fuel rails ,they crack at the top of the injector housings on Number 1,2,3 rarely on number 4 and never on number 5 for some reason. the reason that they crack and fill the sump up with diesel is simply down to badly adjusted injectors causing an overload to the injector housing , there is no warping to the surface of the head when welding as the whole head only reaches only 80 degrees c when welding takes place , the crack is ground out and welded front and back then machined and then pressure tested to 120 psi which is double the pressure that you would normally expect to see in the fuel rail , from around 240 of these over the last 4 years one was returned with a pin hole leak ,so that would be close to a 100 percent success rate , alloy tig welding is permanent and does not fail after a few months or years , if it were to fail it would fail straight away Thumbs Up
Post #212140 18th Feb 2013 2:11pm
View user's profile Send private message View poster's gallery Reply with quote
me@td5.org



Member Since: 16 Jan 2011
Location: Warwick
Posts: 856

2000 Defender 90 Td5 HT Epsom Green
Really useful update, thanks!
Post #212147 18th Feb 2013 3:03pm
View user's profile Send private message View poster's gallery Reply with quote
Nidge



Member Since: 27 Jan 2008
Location: Kildare Ireland
Posts: 809

Ireland 2009 Defender 110 Puma 2.4 HCPU Cairns Blue
I replaced the head on mine with a new AMC one ...£££££££ Shocked

With the old head removed Are you likely to see the crack ?? as I can't even see a hair line one in mine or is pressure testing the only way to go. It was dumping 2 litres of diesel into the sump a week .

Nidge
Post #212149 18th Feb 2013 3:03pm
View user's profile Send private message View poster's gallery Reply with quote
Post Reply  Back to top
Page 1 of 2 12>
All times are GMT

Jump to  
Previous Topic | Next Topic >
Posting Rules
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum



Site Copyright © 2006-2024 Futuranet Ltd & Martin Lewis
DEFENDER2.NET RSS Feed - All Forums